DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 37
Technical content
Features
4,000 counts LCD display with 21 analog bar-graph LQFP 128L package 3V DC power supply Slow ADC Conversion rate : 3 times/s Bar-graph ADC conversion rate : 30 times/s Full automatic measurement ＊ V oltage measurement : 400.0mV, 4.000V – 1000V ＊ Current measurement : μA/mA/A ＊ Frequency with V oltage or Current : ＊ Resistance measurement : 40.00Ω – 40.00MΩ ＊ Capacitance measurement : 4.000nF – 40.00mF ( Taiwan patent no.: 323347, 453443 ) ＊ Capacitance measurement for Clampmeter mode : 4.000nF – 40.00mF ＊ Smart auto check for R / S / D / C mode Resistance : 0.0Ω – 4.000MΩ (Buz. On when R < 30Ω) Capacitance : 0.500nF – 400.0uF (Taiwan patent no.: 326361) ＊ Not contact AC electric field detection ＊ Frequency counter : 400.0Hz – 40.00MHz ＊ Duty cycle measurement : 5% – 95% (< 10kHz) Diode measurement & continuity check Hazardous AC/DC voltage (HV) indication 4 ADP modes with external reference voltage and independent “ADP” user-defined segment on LCD Temperature mode with internal scale translation circuit from 0C to 0F K-type thermocouple reference table compensation (-200 ºC ~ 1350 ºC range) Push functions : ＊ VAHz function ＊ MAX/MIN function ＊ Relative function ＊ Zero function: DCA clampmeter only ＊ Back Light function ＊ KEY function ＊ Data Hold and delayed-hold function ＊ Range change function ＊ Semi-auto calibration operation (Taiwan patent no.: 367334) Low pass filter mode for ACA/ACV measurement (Taiwan patent no.: 362409) Band-gap reference voltage output V oltage overflow selection ( DC / AC : 1010V , DC / AC : 610V) Serial data output ( RS232 format ) LCD segment check when power on Auto power off ( 30min / 15min ) Sleep state indicative signal output Re-power on On-chip buzzer driver Low battery detection Description ES233 is an integrated analog -to-digital converter with 4,000-count LCD with bar -graph display, automatic range selection, and 3V DC power supply. Automatic range selection is provided for ACV/DCV measurement, resistance measurement, current measurement, capacitance measurement, and frequency counter. Expensive and bulky mechanical range switches are not required. Other features include relative value display, offset removing feature for DCA clam p mode , data holding, maximum and minimum value holding, duty cycle measurement, diode measurement, temperature measurement, continuity checki ng, low battery detection, auto power off, re -power on, backlight driver, buzzer driver and RS232 data output.
V 2.2 2 2015/12/15 ES233
4000 Counts DMM
Digital multimeter Clamp meter Pin Assignment 128L LQFP package NC127 CLN10 NC128 IVS1 ADP2 CHP5 CHN6 CIH7 BUFH8 CIL12 CAZH9 CLP11 CAZL13 BUFL14 RAZ15 V RH16 VR _CLAMP18 O HM C420 O HM C321 O HM C222 O HM C123 OVSG24 O R125 V R427 V R328 V R229 AC VL30 V R526 AC VH31 ADI32 ADO33 TEST534 SGND35 V R136 LP Fout38 mVi n37 LPC1 39LPC2 40LPC3 41CAN 42CAP 43R10K 44R1K 45OVX 46OVH 47OVH1 48SLEEP 49FREQ 50CALENP 51SDAP 52 BZOUT 54BKOUT 55ALARM 1 56ALARM 57BP4 58BP3 59BP2 60BP1 61SEG2 9 62SEG2 8 63 SEG26 65SEG25 66SEG24 67SEG23 68SEG22 69SEG21 70SEG20 71SEG19 72SEG18 73SEG17 74SEG16 75SEG15 76SEG14 77SEG13 78SEG12 79SEG11 80SEG10 81SEG09 82SEG08 83SEG07 84SEG06 85SEG05 86SEG04 87SEG03 88SEG02 89SEG01 90CESEL 91SEL2 92SEL1 93DIS 94TS EL 95V ST 96AP OSEL 97VB AR 98RS 232 99O SC2 100O SC1 101 TEM Pin3 CLAMPi n4 VR _ADP19 RS OUT 102 NC103 HZ104 MMX105 REL106 BKLI T107 KEY108 HOLD109 RANGE110 FC5111 FC4112 FC3113 FC2114 FC1115 SLACDC116 CN117 CP118 LB AT9119 V-120 V-121 V+122 V+123 DGND124 AGND125 AGND126 DACO17 SCLP 53 SEG2 7 64 ES233 Cyrustek. com.tw
V 2.2 3 2015/12/15 ES233 Pin No Symbol Type Description 1 IVS I Measurement input in uA/mA current mode. 2 ADP I Measurement input in ADP mode. 3 TEMPin I Measurement input in Temperature mode. 4 CLAMPin I Current measurement input in CLAMP mode. 5 CHP I / O Positive connection for reference capacitor of high-speed A/D. 6 CHN I / O Negative connection for reference capacitor of high-speed A/D. 7 CIH O High-speed integrator output. Connect to integrate capacitor. 8 BUFH O High-speed buffer output pin. Connect to integrate resistor. 9 CAZH O High-speed auto-zero capacitor connection. 10 CLN I / O Negative connection for reference capacitor of high-resolution A/D. 11 CLP I / O Positive connection for reference capacitor of high- resolution A/D. 12 CIL O High-resolution integrator output. Connect to integra te capacitor. (Metalized Polypropylene Film Capacitor type is recommended) 13 CAZL O High-resolution auto-zero capacitor connection. 14 BUFL O High-resolution buffer output pin. Connect to integrate resistor 15 RAZ O Buffer output pin in AZ and ZI phase. 16 VRH O Output of band-gap voltage reference. Typically –1.23V. 17 DACO O Output of band-gap voltage reference. Typically –400 m V. 18 VR_CLAMP I Reference input voltage connection. Typically –400 mV . 19 VR_ADP I Reference input voltage connection. Typically –400mV . 20 OHMC4 O Filter capacitor connection for resistance mode. 21 OHMC3 O Filter capacitor connection for resistance mode. 22 OHMC2 O Filter capacitor connection for resistance mode. 23 OHMC1 O Filter capacitor connection for resistance mode.
24 OVSG O Sense low voltage for resistance/voltage measurement
25 OR1 O Reference resistor connection for 40.00/400.0Ω range
26 VR5 O V oltage measurement ÷10000 attenuator(1000V)
27 VR4 O V oltage measurement ÷1000 attenuator(400.0V) 28 VR3 O V oltage measurement ÷100 attenuator(40.00V) 29 VR2 O V oltage measurement ÷10 attenuator(4.000V)
30 ACVL I
Rectified signal low input in ACV/ACA mode. Connect to negative output of external AC to DC converter.
31 ACVH I
Rectified signal high input in ACV/ACA mode. Connect to positive output of external AC to DC converter. 32 ADI I Negative input of internal AC to DC OP Amp. 33 ADO O Output of internal AC to DC OP Amp. 34 TEST5 O Buffer output of OVSG . 35 SGND I Signal Ground input. 36 VR1 I Measurement Input. Connect to a precised 10MΩ resistor.
V 2.2 4 2015/12/15 ES233 Pin Description ( Continued ) Pin No Symbol Type Description 37 mVin I Measurement input in 400.0mV mode. 38 LPFout O Capacitor C1 connection for internal low-pass filter. 39 LPC1 O Capacitor C1 connection for internal low-pass filter. 40 LPC2 O Capacitor C2 connection for internal low-pass filter. 41 LPC3 O Capacitor C3 connection for internal low-pass filter. 42 CAN I / O Negative auto-zero capacitor connection for capacitor measurement. 43 CAP I / O Positive auto-zero capacitor connection for capacitor measurement. 44 R10K O Connect to a precised 10KΩ resister for capacitor measurement. 45 R1K O Connect to a precised 1KΩ resister for capacitor measurement. 46 OVX I Sense input for resistance / capacitance measurement. 47 OVH O Output connection for resistance measurement. 48 OVH1 O Output connection for resistance measurement. (Optional) 49 SLEEP O Sleep mode indicator, asserts low in SLEEP mode. 50 FREQ I Frequency counter input, offset V-/2 internally by the chip. 51 CALENP I Pulled to V- to enable the calibration scheme. 52 SDAP I / O Input / Output from to EEPROM 24LC02 data. 53 SCLP O Output to EEPROM 24LC02 clock.
54 BZOUT O Outputs a 2KHz audio frequency signal for driving piezoelectric buzzer
55 BKOUT O If BKLIT function is enabled, this pin will change from V - to V+ . Once press BKLIT pin again within 300 sec, this pin will Change back to V-. 56 ALARM1 O Short circuit indication output. 57 ALARM O HV signal detection in V oltage mode and EF mode indication output. 58 BP4 O LCD backplane 4. 59 BP3 O LCD backplane 3. 60 BP2 O LCD backplane 2. 61 BP1 O LCD backplane 1. 62 - 90 SEG29 - SEG01 O LCD segment line 01 – 29. 91 CESEL* I V oltage OL selection feature control pin. (1010V/610V) 92 SEL2* I Diode OL level and HV indication selection pin. 93 SEL1* I Set current mode OL level selection pin. (DMM or clamp mode)
94 DIS* I Control warning buzzer output at LPF and HV mode
95 TSEL* I
Temperature mode controls the automatic mode or manual mode and enable or disable input terminal symbol displayed on the LCD panel selection pin.
96 VST* I
Enable the auto range voltage mode to start from 4 00.0V or disable ADP input terminal symbol displayed on the LCD panel selection pin. 97 APOSEL I Idle time selection for auto power off feature.
98 VBAR I
In µA or mA modes, it is used to control the ‘µ’ or ‘m’ sign. Set to V- to enable the clamp current mode.
V 2.2 5 2015/12/15 ES233 Pin Description ( Continued ) Pin No Symbol Type Description 99 RS232 I Assert low (V-) to make serial data output function not available. 100 OSC2 O Crystal oscillator output connection. 101 OSC1 I Crystal oscillator input connection. 102 RSOUT O Serial data output. 103 NC - Not connected. 104 HZ I Pulse to V- to enable V AHZ mode or duty cycle measurement in Freq. mode. 105 MMX I Pulse to V- to enable MAX/MIN function.
106 REL I
Pulse to V - to enable /disable Relative function or Zero function. Pulse to V - larger than one second to enable/disable RS232 output. When RS232 output is enabled, the APO will be disabled automatically. 107 BKLIT I Back light function. Pulse low to set BKOUT pin output. 108 KEY I Pulse to V- to change mode.
109 HOLD I
Pulse to V - to enable HOLD function. Pulse to V - larger than one second to enable Delayed Hold function. 110 RANGE I Pulse to V- to enable manual mode and manual range selection. 111 FC5 I Switch 5 for function selection. 112 FC4 I Switch 4 for function selection. 113 FC3 I Switch 3 for function selection. 114 FC2 I Switch 2 for function selection. 115 FC1 I Switch 1 for function selection. 116 SLACDC I Select initial DC/AC state. 117 CN O Negative capacitor connection for on-chip DC-DC converter. 118 CP O Positive capacitor connection for on-chip DC-DC converter. 119 LB AT 9 I Multi-level low battery configuration input. Simple external resistor divider is required. 120 V- P Negative supply voltage. 121 V- P Negative supply voltage. 122 V+ O Output of on-chip DC-DC converter. 123 V+ O Output of on-chip DC-DC converter. 124 DGND P / G Digital ground. 125 AGND P / G Analog ground. 126 AGND P / G Analog ground. 127 NC - Not connected. 128 NC - Not connected. Note: Pin91-Pin96 are 4-level logic definition: (V+/DGND/Floating/V-), see section Operation mode
V 2.2 6 2015/12/15 ES233 Supply V oltage (V- to AGND) -4V Analog Input V oltage V- -0.6 to V+ +0.6 V+ V+ ≥ (AGND/DGND+0.5V) AGND/DGND AGND/DGND ≥ (V- -0.5V) Digital Input V- -0.6 to DGND +0.6 Power Dissipation. Flat Package 500mW Operating Temperature -20℃ to 70℃ Storage Temperature -45℃ to 125℃
Electrical Characteristics
Parameter Symbol Test Condition Min. Typ. Max Units Power supply V- 2.4 -3.0 3.3 V Operating supply current In DCV mode IDD Normal operation — 1.8 2.5 mA ISS In sleep mode — 5 10 µA V oltage roll-over error REV 10MΩ input resistor — — ±0.1 %F.S1 V oltage nonlinearity NLV Best case straight line CIL=MPR capacitor — — ±0.1 %F.S1 Zero input reading 10MΩ input resistor -000 000 +000 counts Band-gap reference voltage VREF 100KΩ resistor between VRH and AGND -1.30 -1.23 -1.16 V Open circuit voltage for 400Ω measurement V-=3V — -3.0 — V Open circuit voltage for other Ω measurement -1.19 -1.08 -0.97 V Internal pull-high to 0V current Between V- pin and HOLD, RANGE, KEY , FC1-FC5, BKLIT, — 1.2 — µA Between V- pin and RS232 — 11 — µA AC frequency response at 4.000V range ±1% — 40-400 — HZ ±5% — 400-2000 — 3dB frequency for LPF mode F3dB = 1kHz — 1k — kHz F3dB = Full 100k — — kHz Multi-level low battery detector Vt1 LB AT 9 vs. V- — 2.15 — V Vt2 — 1.82 — Reference voltage temperature coefficient TCRF -20℃<TA<70℃ — 100 — ppm/℃ Capacitance measurement accuracy 4.0nF – 40mF -2.52 — 2.52 % -3 — 3 counts Note: 1. Full Scale. 2. When capacitance measurement (Clamp mode) is selected, the additional error 1% should be increased .
V 2.2 7 2015/12/15 ES233
- Operating Modes 1.1. Semi-auto calibration scheme ES233 includes DMM & Clamp-on meter features in single chip. DMM manufacturers need the calibration process in production. The traditional solution needs the variable resistors for calibration by manual adjustment. ES233 provide another calibration scheme and the most variable resistors could be ignored. When ES233 is at OFF-state, pull CALENP (pin 51) to V- to active the calibration scheme after re-power on. A digital controlled voltage output will be active from DACO. When semi -auto calibration scheme is active, use HOLD (or BKLIT) key to decrease voltage and use RANGE (or MMX) key to increase the voltage. Decrease the reference voltage means the counts on display will be increased. Increase the reference voltage means the counts on display will be decreased. The adjustment step is approximate one count. If coarse adjustment is required, push HOLD (or BKLIT) and RANGE (or MMX) larger than one second to speed up to approximate 10 counts per second. After calibration proce ss is finished, push HOLD (or BKLIT) and RANGE (or MMX) less than 1sec. simultaneously to save the digital control code to external EEPROM (24LC02). The semi -auto calibration scheme supports the following nine measurement modes. When CALENP pin is active, set the proper function switches or push KEY to choose the target measurement mode. When mode is selected, the LCD segment of Unit at related measurement will be blinking. Mode Default Range For CAL Remark V oltage Measurement 4.000V (DC/AC separated) Accuracy of other ranges is guaranteed by external resistor. mV V oltage Measurement 400.0mV (DC/AC separated) DC Current Measurement For Multimeter (uA/mA) 400.0μA or 4000μA ( 2 modes choose one for calibration ) Auto 2 ranges choose one, proposed to use a large range to calibration. AC Current Measurement For Multimeter (uA/mA) 400.0μA or 4000μA ( 2 modes choose one for calibration ) Auto 2 ranges separated for calibration is necessary. DC Current Measurement For Multimeter (A) 4A or 20A Auto 2 ranges choose one, proposed to use a large range to calibration. AC Current Measurement For Multimeter (A) 4A or 20A Auto 2 range s individual for calibration is necessary. DC Current Measurement For Clampmeter 400.0A or 4000A ( 6 modes choose one for calibration ) Auto 2 ranges choose one, proposed to use a large range to calibration. AC Current Measurement For Clampmeter 400.0A or 4000A ( 6 modes choose one for calibration ) Auto 2 ranges separated for calibration is necessary. Capacitor Measurement 40.00nF Temperature Measurement 400.0℃ Lower range in auto temperature measurement. ADP Measurement 4000 / 400.0 / 40.00 / 4.000 4 ranges separated for calibration. After calibration procedure is finished, set ES233 to OFF-state and set CALENP (pin51) to DGND or kept floating to return to normal mode operation after re-power on.
V 2.2 8 2015/12/15 ES233 1.2. Voltage Measurement A re-configurable voltage divider automatically provides a suitable range in voltage measurement mode. 400.0mV range is independent and manual mode. It takes input signal from mVin pin. The following table summarizes the Full-Scale ranges in each configuration. Configuration Full Scale Range Divider Ratio Resister Connection Input Pin VR1 400.0mV 1 - mVin V.S. SGND VR2 4.000V 1/10 VR2 (1.111MΩ) VR1 V.S. SGND VR3 40.00V 1/100 VR3 (101KΩ) VR1 V.S. SGND VR4 400.0V 1/1000 VR4 (10KΩ) VR1 V.S. SGND VR5 1000V 1/10000 VR5 (1KΩ) VR1 V.S. SGND The VST pin is used to control the voltage start range from 4.000V or 400.0V, refer to the table. VST V+ DGND Floating V- Initial state 400.0V 4.000V 400.0V 4.000V The ES233 provide two types of the hazardous live voltage warning by different condition. SEL2 V+ DGND Floating V- DCV 35V 70V ACV 16V 33V When the voltage measured exceeds the level defined, t he buzzer generates 2KHz beep and ALARM (pin 57) drive high output (V+ level) periodically. It can remind the user to notice the hazardous voltage. The buzzer sound warning could be cancelled by DIS (pin94). DIS V+ DGND Floating V- Buzzer Disable Enable
V 2.2 9 2015/12/15 ES233 1.2.1. OL Selection ES233 has a voltage OL selection feature archived by configuring the pin CESEL . In automatic voltage mode, ES233 will show OL when the voltage is exceed the overflow level. If CESEL is connected to V+, ES233 will have a 1010V overflow level in voltage mode. If CESEL connected to DGND, the overflow level will be set to 610V in DCV and ACV mode. The configuration of CESEL is listed below. For ACV/DCV voltage modes: CESEL V+ DGND OL level 1010V 610V Note: V-/Floating level is not available. 1.3. Low Pass Filter (LPF) Mode For ACA/ACV Mode ES233 provides a 3 rd order low-pass filter to reduce the influence of high frequency noise. This LPF feature is available in ACV or ACA modes. Set FC5 to low in these modes, the KEY button is used to activate the LPF feature. Press KEY button for less than 1 second to select the 3dB bandwidth of LPF sequentially ( Full / 1kHz ) and the relative LCD symbol on LCD panel will be active also. The DIS (pin94) could enable/disable the Low Pass Filter feature available. DIS V+ DGND Floating V- LPF Disable Enable Disable Enable
V 2.2 10 2015/12/15 ES233 1.4. Current Measurement For Multi-meter ES233 has 3 automatic current measurement modes for multimeter. Th e following table summarizes the Full -Scale range of each mode. When ES233 operates in the current measurement modes for multi -meter, it takes high input from pin IVS , low input from pin SGND and reference voltage from calibration scheme. Mode FC1~4 1VBAR Full Scale Input Terminal Automatic1 1,1,0,1 1 400.0µA / 4000µA IVS V .S. SGND Automatic2 1,1,1,1 1 40.00mA / 400.0mA IVS V .S. SGND Automatic3 0,0,0,0 1 4.000A /10.00A2 IVS V .S. SGND Note: 1. Connect VBAR to V- will disable the “µ2” / ”m2” symbol on LCD panel. 2. Connect SEL1 to V+(or Floated) or V- (or DGND) will set maximum readings of input for Automatic3 mode. SEL1 V+ DGND Floating V- OL level 10.00A 20.00A 10.00A 20.00A 1.5. Current Measurement For Clamp-meter ES233 has 2 automatic and 4 manual c urrent measurement modes for Clampmeter. The following table summarizes the Full -Scale range of each mode. When ES233 operate in the automatic mode s and the manual mode1~4, it takes high input from CLAMPin pin, low input from SGND and reference voltage from VR_CLAMP. Mode FC1~4 1VBAR Full Scale Input Terminal Automatic1 1,1,0,1 0 400.0A / 4000A2 CLAMPin V .S. SGND Automatic2 1,1,1,1 0 40.00A / 400.0A CLAMPin V .S. SGND Manual1 1,1,0,0 X 4.000A CLAMPin V .S. SGND Manual2 1,0,0,0 X 40.00A CLAMPin V .S. SGND Manual3 1,0,1,0 X 400.0A CLAMPin V .S. SGND Manual4 1,0,0,1 X 1000A or 2000A2 CLAMPin V .S. SGND Note: 1. Connect VBAR to V- will disable the “µ2” / ”m2” symbol on LCD panel. 2. Connect SEL1 to DGND or V- will set maximum of input for Automatic1 & Manual4 modes. 3. In DC current modes for clamp-meter, ES233 provides Zero Function for offset removing. SEL1 V+ DGND Floating V- OL level 1000A 2000A
V 2.2 11 2015/12/15 ES233 1.6. SCAN RSDC measurement ES233 provide the smart auto check mode for the DUT type. It could scan the four types of device Resistor / S horted / D iode / C apacitor. Push KEY to change to individual function is available. It could increase the measurement ranges. The following table summarizes the detective range for the smart scan RSDC mode. Mode FC1~4 SLACDC Available scanning range Scan RSDC 1,1,1,0 0 R: ~ 4MΩ (Parasitic capacitance < 100pF) S: < 30Ω buzzer ON D: forward/reverse diode direction C: ~ 400uF (Minimum 500pF) 1.7. Resistance Measurement A re -configurable divider automatically provides a suitable Full-Scale range in resistance measurement mode. The following table summarizes the f ull-scale ranges and the reference r esistors in each configuration. Configuration Full Scale Range Relative Resistor Equivalent value OR0 40.00Ω OR1 100Ω OR1 400.0Ω OR1 100Ω OR2 4.000KΩ VR5 1KΩ OR3 40.00KΩ VR4 || VR1 10KΩ OR4 400.0KΩ VR3 || VR1 100KΩ OR5 4.000MΩ VR2 || VR1 1MΩ OR6 40.00MΩ VR1 10MΩ
V 2.2 12 2015/12/15 ES233 1.8. Capacitance Measurement The following table summarizes the eight ranges of capacitance measurement mode. Configuration1 Full Scale Range Relative Resistor Measurement Period C13 4.000nF Ratio to C2 0.36 sec C22 40.00nF CAL 0.36 sec C3 400.0nF Ratio to C2 1.15 sec C4 4.000uF Ratio to C2 1.15 sec C5 40.00uF R10K 0.33 sec C6 400.0uF R10K 2.2 sec(max) C7 4.000mF R1K 0.89 sec(max) C8 40.00mF R1K 8.8 sec(max) Note: 1. In order to obtain an accurate reading, a capacitor must be discharged before measurement begins. The chip has a built-in discharge mode to automatically discharge the capacitor. In discharge mode, the main -display shows dIS.C. Discharging through the chip is quite slow. We recommend users to discharge the capacitor with some other apparatus. 2. The C2 range is calibrated in calibration scheme. 3. The C1 range residual offset could be compensated by the small capacitors near to OVH pin. 1.9. Continuity Check Continuity check shares the same configuration with 400.0Ω manual resistance measurement mode and has buzzer output to indicate continuity. The buzzer generates 2KHz beep and ALARM1 (pin 56) drive high output (V+ level) whenever the reading is less than 30Ω. The ES233 built in a high speed short detection circuit and the detection could be less than 10ms.
V 2.2 13 2015/12/15 ES233 1.10. Diode Measurement Diode measurement mode shares the same configuration with 4.000V manual voltage measurement mode and has buzzer output to indicate continuity. The buzzer generates a 2KHz sound and ALARM1 (pin 56) drive high output (V+ level) whenever the reading is less than 30mV . If the test circuit is open or the voltage drop between the two ports of the diode under test is larger than 2V or 2.5V (depends on SEL2 pin level), the LCD panel will show “OL”. SEL2 V+ DGND Floating V- OL 2.500V 2.000V 2.500V 2.000V The ES233 also support a LED forward voltage measurement mode. It is necessary to use external source to achieve the measurement. The following table & diagram summarizes the diode & LED measurement mode. Mode SLACDC FC1~4 SEL2 Full Scale Input Terminal LED 1 0,0,1,0 V + o r FLO AT 3.500V VR1 V .S. SGND LED P TC LED M ode R 1.111M 10M OVH OVSG V ES235 / 236 / 238 / 239 P TC E xternal Source Diode Mode Internal Source
V 2.2 14 2015/12/15 ES233 1.11. Frequency Counter The time base of the frequency counter is derived from an external crystal oscillator by Tcounter = 4,000,000 Fosc Where Fosc is the frequency of the crystal oscillator. Thus, the counter has a 1- second time base when a 4MHz oscillator is used. The frequency counter can select the proper range automatically or manually. Auto-range operation extends over six decades, from 400.0Hz to 40.00MHz. The following table summarizes the Full-Scale range of the frequency counter. Range Full Scale FR1 400.0Hz FR2 4.000KHz FR3 40.00KHz FR4 400.0KHz FR5 4.000MHz FR6 40.00MHz *If input frequency is less than 1.0Hz, ES233 will show 0.0Hz 1.12. Duty Cycle Measurement When frequency mode is selected, push H Z key to enter duty cycle measurement . The duty cycle source frequency duty cycle is smaller than 5.0%, the UL will be shown on the LCD display. If the duty cycle is larger than 9 5.0%, the OL will be shown on the LCD. When the frequency is zero, the duty cycle display will be 0.0% or “UL” shown.
V 2.2 15 2015/12/15 ES233 1.13. Electrical field detection mode ES233 supports a non- contact AC voltage measurement, which is called electric field measurement also. The ADC input is configured from ADP pin vs. SGND. When no or less electric field is detected, the LCD display shows “EF”. If the electric field is detected, the strength will be showed on the LCD display by “-“ not digits type. Level 1(equivalent to 12.5% full scale of ADC) is “ -“ and the level 4(equivalent to 100% full scale of ADC) is “ ----“. Additional beeper (BUZOUT pin) and LED alarm (ALARM pin) will be output from ES233. The frequency of buzzer and LED alarm depends on the strength of electric field also. The Faster beeper means the stronger electric field (AC voltage) is sensed. Mode FC1~4 SLACDC Full Scale Input Terminal EF 1,1,1,0 1 - ADP V .S. SGND 1.14. Temperature Measurement mode Temperature measurement mode takes input signal from TEMPin pin. The ES233 has ºC to ºF scale translation circuit and standard K-type thermocouple reference table is built-in. External cold-junction compensation circuit is still necessary. In temperature measurement mode, there is automatic mode and manual mode . The TSEL pin (pin95) is used to control the automatic mode (0.1 OC/1OC resolution) or manual mode (0.1OC resolution) selection. It also cou ld enable or disable display of input terminal symbol on the LCD panel (SEG28). Manual range Auto Range ºC range -200.0 ºC ~ 400.0 ºC -200 ºC ~ 1350 ºC -200.0 ºC ~ 400.0 ºC / 400 ºC ~ 1350 ºC ºF range -328.0 ºF ~ 752.0 ºF -328 ºF ~ 2462 ºF -328.0 ºF ~ 752.0 ºF / 752 ºF ~ 2462 ºF The following table summarizes the operation of TSEL pin: TSEL V+ DGND Floating V- Range select Manual range Auto range Manual range Auto range LCD SEG28 Display Symbol ON Display Symbol ON Display Symbol OFF Display Symbol OFF ADP 100M EF test circuit EFin+ SGND AGND EFin- 100k VRADP -400mV
V 2.2 16 2015/12/15 ES233 Temperature mode circuit example: 1.15. ADP ES233 provides 4 manual range ADP measurement modes for user define. The ADP pin is auxiliary input terminal for ADC of ES233. The full scale for ADP mode is 400.0mV. If FC5=0, the minus sign will not be shown on LCD segment. Mode FC1~4 SLACDC Full Scale Input Terminal ADP0 0,0,1,1 1 4000 ADP V .S. SGND ADP1 0,0,0,1 1 400.0 ADP V .S. SGND ADP2 0,1,1,1 1 40.00 ADP V .S. SGND ADP3 0,0,1,01 1 4.000 ADP V .S. SGND Note: 1. If SEL2 pin is set to V+ or kept floating, the ADP3 mode will be disabled and change to LED mode. The VST pin (pin96) could be used to enable or disable input terminal symbol displayed on LCD panel for ADP mode. VST V+ DGND Floating V- LCD SEG28 Display Symbol ON Display Symbol OFF
V 2.2 17 2015/12/15 ES233 1.16. Auto Power Off And Idle Time Selection ES233 has a default auto power off function. If the meter is idle for more than the given idle time duration, the chip automatically turns the power off. The idle time to trigger the auto power off function is determined by APOSEL pin. If APOSEL is connected to V-, the idle time will be set to 30 minutes. If pin APOSEL is floating, the Idle Time will be set to 15 minutes. When APO is occurred , the state of the meter is reserved . The APO symbol on the LCD panel indicates whet her the auto power off is enabled or not. In some cases, user might want to disable Auto power off. There are two ways to disable this feature as following: 1. Power on the meter when any of the push functions, except for HOLD, is pressed down. 2. In addition, w hen RS232 output is active, the auto power off function is also disabled automatically. Note: Powering on the meter while pressing HOLD and lasts 2 seconds turns on all LCD segments until HOLD is pressed again. 1.17. Sleep The meter enters sleep mode after aut o power off. The SLEEP pin asserts low (V -) in the sleep mode, and asserts high (V+, not 0V) after re-power on. 1.18. Re-Power On After auto power -off, pushing any of the push function or changing the rotary mode can turn on the meter again. If the meter is re-powered on by changing the rotary mode, the saved state is cleared. If the meter is re-powered on by push functions, the chip restores the saved state and enters HOLD mode. The LCD displays the saved value. 1.19. Hazardous Voltage Indication The ES233 could provide the AC/DC hazardous voltage indication for voltage/resistor/capacitor/diode modes. Of course, the indication could support LCD symbol /LED /Buzzer driving simultaneously . Especially ES233 could detect the AC voltage in DCV mode and detects the DC voltage in ACV mode. It means if not proper AC or DC voltage signal exists on the DUT when DCV or ACV measurement mode is set, the HV indication will be active.
V 2.2 18 2015/12/15 ES233 Function / Range DC voltage (typ.) AC voltage (typ.) AC mV > +3V OL AC 4V > +20V OL AC 40V – 1000V > +100V Depends on SEL2 DC mV OL > 3Vrms (40-1kHz) DC 4V OL > 20Vrms (40-1kHz) DC 40V-1000V Depends on SEL2 > 90Vrms (40-1kHz) Res/Cap/Diode modes > +10V > 10Vrms (40-1kHz) Note: If AC+DC signal is applied, the voltage criterion will be changed. 1.20. Multi-level Low Battery Voltage Detection ES233 provides a voltage detection input (pin 121: LBAT9 ) for multi-level low battery application. There are two internal voltage reference Vt1 & Vt2 for comparing with LBAT9 . If LBAT9 is larger than Vt1, the LCD segment of SLB 1 – SLB3 will active always. This status implies Full battery. When LBAT9 is less than Vt1 but larger than Vt2, the LCD segment of SLB 1 will disappear and this status implies Half battery. When LBAT9 is less than Vt2, the LCD segment of SLB2 will disappear and this status implies Low battery. When the Low battery status lasts for 10 seconds, the LCD segment of SLB3 will be blinking. When the SLB3 is blinking for 20 seconds, the operation of meter will be inhibited and LCD panel will show “ Lo.bt”. In this case, it is suggested to replace a new battery immediately. After “Lo.bt” appears and lasts for 60 seconds, ES233 will enter to auto power off mode. L o.b t Low battery condition > 30s Operation not allowed DC 1.8 0 0 V Low battery DC AUTO AUTO 1.8 0 0 V Half battery DC AUTO 1.8 0 0 V Full battery DC AUTO blinking L o.b t Low battery condition > 30s Operation not allowed DC 1.8 0 0 V Low battery DC AUTO AUTO 1.8 0 0 V Half battery DC AUTO 1.8 0 0 V Full battery DC AUTO L o.b t Low battery condition > 30s Operation not allowed DC 1.8 0 0 V Low battery DC AUTO AUTO 1.8 0 0 V Half battery DC AUTO 1.8 0 0 V Full battery DC AUTO blinking Low battery test circuit (a) 120K 470K BA TTE LBAT9 AGND 0.1u Low battery test circuit (b) 910K 300K BA TTE LBAT9 AGND 0.1u
V 2.2 19 2015/12/15 ES233
- Measurement Mode Switching Measurement mode depends on the logic level of SLACDC, FC1, FC2, FC3, FC4, FC5 and KEY selection. When FC5 is high, the measurement mode list is shown below: SLACDC FC1 FC2 FC3 FC4 Mode KEY selection 0 1 0 1 1 DC V oltage Measurement DCV ↔ ACV 0 1 1 0 1 Auto DC Current Measurement(µA) DCA ↔ ACA 0 1 1 1 1 Auto DC Current Measurement(mA) DCA ↔ ACA 0 0 0 0 0 Auto DC Current Measurement(A) DCA ↔ ACA 0 1 1 1 0 Scan RSDC Ω Continuity Diode Cap Scan 0 1 1 0 0 3Manual DC 4.000A DCA ↔ ACA 0 1 0 0 0 3Manual DC 40.00A DCA ↔ ACA 0 1 0 1 0 3Manual DC 400.0A DCA ↔ ACA 0 1 0 0 1 3Manual DC 4000A DCA ↔ ACA 0 0 0 1 1 Resistance Measurement Ω ↔ Continuity 0 0 0 0 1 Continuity Check Continuity ↔ Diode 0 0 1 1 1 Resistance Measurement Ω Continuity Diode 0 0 0 1 0 Frequency Measurement ---- 0 0 1 1 0 Capacitance Measurement ---- 0 0 1 0 0 Auto Temperature Measurement ℃ ↔ ℉ 0 0 1 0 1 DCmV DCmV ↔ ACmV 1 1 0 1 1 AC V oltage Measurement ACV ↔ DCV 1 1 1 0 1 Auto AC Current Measurement(µA) ACA ↔ DCA 1 1 1 1 1 Auto AC Current Measurement(mA) ACA ↔ DCA 1 0 0 0 0 Auto AC Current Measurement(A) ACA ↔ DCA 1 1 1 1 0 EF mode ---- 1 1 1 0 0 3Manual AC 4.000A ACA ↔ DCA 1 1 0 0 0 3Manual AC 40.00A ACA ↔ DCA 1 1 0 1 0 3Manual AC 400.0A ACA ↔ DCA 1 1 0 0 1 3Manual AC 4000A ACA ↔ DCA 1 0 0 1 1 ADP0 ( 4000 ) ---- 1 0 0 0 1 1 0 1 1 1 1 0 0 1 0 ADP3 ( 4.000 ) Set to LED mode if SEL2 is kept float 1 0 1 1 0 Capacitance Measurement (Clamp) ---- 1 0 1 0 0 Auto Temperature Measurement ℉↔℃ 1 0 1 0 1 ACmV ACmV ↔ DCmV Note: 1. When FC5 is high, the ADP0, ADP1, ADP2 and ADP3 modes can display minus sign. 2. These modes could be designed for multimeter current modes, please refer to section 1.4. 3. These modes could be designed for clampmeter current modes, please refer to section 1.5.
V 2.2 20 2015/12/15 ES233 Measurement Mode Switching (Continued) Measurement mode depends on the logic level of SLACDC, FC1, FC2, FC3, FC4, FC5 and KEY selection. When FC5 is low, the KEY function is disabled in most modes. The measurement mode list is shown below: SLACDC FC1 FC2 FC3 FC4 Mode KEY selection & Remaks 0 1 0 1 1 DC V oltage Measurement ---- 0 1 1 0 1 Auto DC Current Measurement(µA) ---- 0 1 1 1 1 Auto DC Current Measurement(mA) ---- 0 0 0 0 0 Auto DC Current Measurement(A) ---- 0 1 1 1 0 Scan RSDC Ω Continuity Diode Cap Scan 0 1 1 0 0 3Manual DC 4.000A ---- 0 1 0 0 0 3Manual DC 40.00A ---- 0 1 0 1 0 3Manual DC 400.0A ---- 0 1 0 0 1 3Manual DC 4000A ---- 0 0 0 1 1 Resistance Measurement ---- 0 0 0 0 1 Continuity Check ---- 0 0 1 1 1 Diode Measurement ---- 0 0 0 1 0 Frequency Measurement ---- 0 0 1 1 0 Capacitance Measurement ---- 0 0 1 0 0 Auto Temperature Measurement ℃ 0 0 1 0 1 DCmV ---- 1 1 0 1 1 AC Voltage Measurement LPF Full1K 1 1 1 0 1 Auto AC Current Measurement(µA) LPF Full1K 1 1 1 1 1 Auto AC Current Measurement(mA) LPF Full1K 1 0 0 0 0 Auto AC Current Measurement(A) LPF Full1K 1 1 1 1 0 EF mode ---- 1 1 1 0 0 3Manual AC 4.000A LPF Full1K 1 1 0 0 0 3Manual AC 40.00A LPF Full1K 1 1 0 1 0 3Manual AC 400.0A LPF Full1K 1 1 0 0 1 3Manual AC 4000A LPF Full1K 1 0 0 1 1 ADP0 ( 4000 ) ---- 1 0 0 0 1 1 0 1 1 1 1 0 0 1 0 ADP3 ( 4.000 ) Set to LED mode if SEL2 is kept float 1 0 1 1 0 Capacitance Measurement (Clamp) ---- 1 0 1 0 0 Auto Temperature Measurement ℉ 1 0 1 0 1 ACmV LPF Full1K Note: 1. When FC5 is low, the ADP0, ADP1, ADP2 and ADP3 modes can’t display minus sign. 2. These modes could be designed for multi-meter current modes, please refer to section 1.4. 3. These modes could be designed for clamp-meter current modes, please refer to section 1.5.
V 2.2 21 2015/12/15 ES233
- Push Function All the enabled push functions will be reset when the measurement mode is changed when FC1-FC5 modes are changed . The following table lists the available function versus every measurement mode. Note: 1Include automatic μA, automatic mA and manual A modes, please refer to section 1.4. 2Include 2 automatic modes and 4 manual modes, please refer to section 1. 5. 3When clamp-meter DCA mode is selected, the REL function will be changed to ZERO function operation automatically. 4Only auto range temperature mode is available. 5When RS232 (pin99) is pulled to V-, push REL key and lasts for 2 seconds will active the UART output. HZ MMX REL/RS2325 BKLIT KEY HOLD RANGE Voltage mode AC O O O O O O mV mode AC O O O O O X 1Current Mode for Multimeter AC O O O O O O 2Current Mode for Clampmeter AC O O3 O O O X Resistance X O O O O O O Continuity X O O O O O X Diode mode X O O O O O X Frequency O X O O X O O Capacitance X O O O X O O Temperature X O O O O O O4 Scan RSDC X X O O O O X EF Mode X X O O X X X ADP mode X O O O X O X
V 2.2 22 2015/12/15 ES233 3.1. Range Push RANGE1 key to switch from automatic to manual mode, and while in manual mode, changes the full-scale range. The following figure shows the state transition. Automatic Mode Manual Mode 1 push < 1 sec 1 push > 1 sec 1 push < 1 sec Range up Measurement Mode Auto Manual Control Range Initial Range V VR2 – VR5 VRi → VRi + 1, VR5 → VR2 4.000V – 1000V 4.000V2 Auto µA R1 – R2 R1 → R2, R2 → R1 400.0µA – 4000µA 400.0µA Auto mA R1－R2 R1 → R2 R2 → R1 40.00mA – 400.0mA 40.00mA Auto A R1－R2 R1 → R2 R2 → R1 4.000A – 10.00A 4.000A Auto 40A/400A (clamp) R1－R2 R1 → R2 R2 → R1 40.00A – 400.0A 40.00A Auto 400A/4000A (clamp) R1－R2 R1 → R2 R2 → R1 400.0A – 4000A 400.0A Capacitance C1 – C8 Ci → Ci + 1, C8 → C1 4.000nF– 40.00mF 4.000nF Capacitance (Clamp) C1 – C8 Ci → Ci + 1, C8 → C1 4.000nF– 40.00mF 4.000nF Ω OR0 – OR6 ORi → ORi + 1, OR6 → OR0 40.00Ω – 40.00MΩ 40.00Ω Frequency FR1 – FR7 FRi → FRi + 1 FR7 → FR1 400.0Hz – 40.00MHz 400.0Hz Temp T1-T2 T1T2 T2T1 400.0oC~1350oC 400.0oC Temp T1 – T2 T1 T2 T2 T1 400.0 ºC ~ 1350 ºC 400.0 ºC Note: 1. Pushing RANGE resets all existing special modes except for V AHZ mode. 2. Initial range of voltage mode depends on VST pin configuration
V 2.2 23 2015/12/15 ES233 (Auto/Manual) 〝REL〞active. The relative value 〝REL〞and〝H〞active. Hold the relative value push HOLD push REL push REL push HOLD 3.2. HOLD and Delayed Hold Feature HOLD mode makes the meter stop updating the LCD panel. This mode can be nested in most of the special modes. Enabl ing HOLD function in automatic mode makes the meter switch to manual mode, but the Full-Scale range remains the same. ES233 provides a Delay HOLD feature. To activate Delay HOLD feature, press down the HOLD bottom and last for 2 seconds. The meter will del ay for 6 seconds, than enters HOLD mode. In the 6- secnod delayed time, the HOLD symbol on LCD panel will blink. HOLD function and the delayed state can be cancelled by changing the measurement mode, pressing RANGE, or push HOLD again. Normal mode (Auto/Manual) HOLD mode (Manual)Push < 2s Delay State (Auto/Manual) Push > 2s Push < 2s Push < 2s Push > 2s 6sec past 3.3. KEY See Section “Measurement Mode Switching” for the function of this pin. 3.4. REL + HOLD In REL mode, the LCD panel displays DN+K - DN, where N = 1, 2, 3, … , D N is the last value before REL key is pushed, and DN+K is the current value. The meter returns to normal operation if REL is pressed again. Pressing HOLD in REL mode makes the meter stop updating the LCD panel. Note: 1. It’s possible that relative value (DN+K - DN) exceeds 4,000 or -4,000 counts. The LCD shows OL in REL mode only if DN or DN+K is more than 4,000 counts.
V 2.2 24 2015/12/15 ES233 (Automatic/manual) “MAX” active max value “MIN” active min value “MAX” “H” active hold max value. “MIN” “H” active hold min value. Push HOLD Push HOLD 1push<1s 1 push>1 sec 1 push>1s 1 push<1s “Max” “MIN” blink current value 1push<1s Push HOLD hold current value. 1push<1s 1push<1s 1 push>1 sec 1push<1s 1push<1s 3.5. Max/Min + HOLD The meter displays the maximum or minimum value of the input in Max/Min mode. When MMX key is pressed for the first time, the meter displays the maximum value. The meter displays the minimum value, when it is pressed again. When MMX key is pressed for the third time, the meter displays current value. The meter returns to normal operation if MMX is pressed and held for longer than one second. Pressing HOLD in Max/Min mode makes the meter stop updating the maximum or the minimum value. 3.6. Relative + Max/Min + HOLD Max/Min mode can be nested in REL mode. The meter displays the maximum or minimum value relative to the reference when MMX is pressed in REL mode. Pressing HOLD under REL + Max/Min makes the meter stop updating the LCD panel. Original State (Auto/Manual) 〝REL〞active. The relative value 〝REL〞and〝Max〞active. Maximum rel. value Current rel. value 〝REL〞and〝Min〞active. Minimum rel. value Push MMX Push MMX > 1s Push MMX 〝REL〞,〝Max〞, 〝H〞active. Hold max. rel. value 〝REL〞, 〝Min〞, 〝H〞active. Hold min. rel. value 〝H〞blink. Hold the current rel. value Push MMX Push MMX Push HOLD Push HOLD Push HOLD Push MMX Push REL Push REL Push MMX
V 2.2 25 2015/12/15 ES233 3.7. ZERO Function 400.0A/4000A (please refer to section 1.5) mesurement modes, ES233 provides ZERO function to remove the residual current value. Push REL key less than one second to enter ZERO mode. In ZERO mode, the LCD panel displays D N+K - DN, where N = 1, 2, 3, … , D N is the last conversion value before REL key is pushed, and D N+K is the current conversion value. If REL key is pushed again in ZERO mode, the met er will refresh the D N value and displays the D N+K - DN again. The meter returns to normal operation if REL key is pressed and held for longer than one second. Pressing HOLD in ZERO mode makes the meter stop updating the LCD panel. In 2- range auto DCA modes for clampmeter ( 400.0A/4000A or 40.00A/ 400.0A), the system will stay in automatic mode, even if the ZERO function is activated. In other words, It could achieve real automatic operation. In automatic mode, ZERO function could not be entered from higher range, but it could be still activated if current range is lower one. This is because most residual current value is so small that the range could not be higher one in automatic mode. When enter ZERO mode from lower range, the system will store the nonzero counts (residual current value). If the range goes up to higher one automatically, the nonzero counts will be divided by ten. So this function will still work well in automatic modes. State diagram for ZEROmode : State diagram for ZERO + HOLD mode : Original State ‘Zero’ Active Show DN+K - DN Press Zero > 1s Press Zero Press Zero < 1s Original State ‘Zero’ Active Show DN+K - DN Press Zero > 1s Press Zero Press Zero < 1s ‘Zero’ ‘Hold’ Active Stop LCD upgrading Press Hold
V 2.2 26 2015/12/15 ES233 State diagram for ZERO + Max/Min + HOLD mode : 3.8. V AHZ Function When voltage or current measurement mode is selected, the V AHz funtion is available. Push H Z key to select this frequency measurement mode. The frequency i s measured by auto ranging. The maximum frequency range is 40K Hz. The sensitivity of signal input is 5% full scale of signal in voltage or current mode typically. Configuration RANGE FR1 400.0Hz FR2 4.000KHz FR3 40.00KHz Original State (Auto/Manual) ‘Zero’ ‘Max’ Active Show Max. DN+K - DN Current DN+K - DN ‘Zero’ ‘Min’ Active Show Min. DN+K - DN Push MMX Push MMX > 1s Push MMX ‘Zero’ ‘Max’ ‘Hold’ active Hold Max. DN+K - DN Value ‘Zero’ ‘Min’ ‘Hold’ active Hold Min. DN+K - DN Value 〝H〞blink. Hold the current DN+K - DN Push MMX Push MMX Push HOLD Push HOLD Push HOLD Push MMX Push REL Push REL > 1s Push MMX ‘Zero’ Active Show DN+K - DN Push REL < 1s
V 2.2 27 2015/12/15 ES233
- Serial Data Output The RS232 function will be activated if press down the REL key and last for 2 seconds , RS232 symbol will be shown on the LCD display. The serial data sent to SDO pin periodically at every A/D conversion cycle by 15 times per second. The data format complies with 8Bits transmission code with a baud rate of 9600. The host can use RS232 interface to read the data. A single data packet includes a start bit (always 0), 8 data bits with no parity check bit, and a stop bit (always 1). The high and low voltage levels correspond to DGND and V- respectively. SDO remains at 1 (high) when it is inactive. Hence the start bit (0) could be used as the triggering signal to begin the reading process. The following figure shows the data format of a single packet. Single packet 0 1 MSB LSB -3V D7 D6 D5 D4 D3 D2 D1 D0 One data block consists of 17 packets. The following figure shows the format of a data block. The Header and Device code leads the whole packets. The range packet indicates the decimal point position on LCD panel of meter. Main_Digit1-3 consists of the readings on the LCD panel. The function packet indicates the measurement mode of the meter. Status 1-4, Unit and Bargraph give the other status of the meter. CR and LF are delimiters used to separate the blocks.
V 2.2 28 2015/12/15 ES233 Header Device Range Main_Digit1 Main_Digit2 Main_Digit3 Function1 Function2 Function3 Status1 Unit Bargraph CR LF Status2 Status3 Status4 0 01 01 01 1 0 01 01 01 10 01 01 01 1 0 10 1 D 7 D 0 The meter always outputs the current value shown on LCD screen to the serial port. The detailed data format of each packet is listed below. D0 D1 D2 D3 D4 D5 D6 D7 a01 0 0 0 0 1 1 1 1 Header a02 1 0 0 0 0 0 0 1 Device a03 X X X X M_DP1 M_DP2 M_DP3 X Range a04 M_SIGN X X X X X X X Main_Digit1 a05 Digit33 Digit32 Digit31 Digit30 Digit23 Digit22 Digit21 Digit20 Main_Digit2 a06 Digit13 Digit12 Digit11 Digit10 Digit03 Digit02 Digit01 Digit00 Main_Digit3 a07 V A Ohm Continuity Diode Capacitance Hz Duty Function1 a08 VAH Z ℃ ℉ X EFmode SCAN Clamp LED Function2 a09 ADP0 ADP1 ADP2 ADP3 X X X X Function3 a10 AUTO MANU AC DC OL UL X X Status1 a11 SLB3 SLB2 SLB1 LBA T30s BW_full X BW1K HOLD Status2 a12 REL ZERO MAX MIN CURRENT X X X Status3 a13 Danger OPEN SHORT DISCH X X X X Status4 a14 Mega Kilo X Mili X Micro X Nano Unit a15 B_SIGN X B05 B04 B03 B02 B01 X Bargraph a16 0 0 0 0 1 1 0 1 CR a17 0 0 0 0 1 0 1 0 LF Note： 1. X undefined & don’t care 2. Whole packet is shown by LSB first.
V 2.2 29 2015/12/15 ES233 4.1. RANGE This packet indicates range state of the meter. The M_DP1 – M_DP3 corresponding DP1 – DP3 of LCD segment (see section 5 ). In DCV 4.000V range, this a03 packet will set xxxx001x. If change to 40.00V the packet will be xxxx010x. D0 D1 D2 D3 D4 D5 D6 D7 a03 X X X X M_DP1 M_DP2 M_DP3 X 4.2. Main_Digit1 –Main_Digit3 Main_Digit1 – Main_Digit3 is the readings of measurement result shown on LCD panel. DigitN3 – DigitN0 consist of 4-bit BCD code. The M_SIGN is the sign bit of readings. D0 D1 D2 D3 D4 D5 D6 D7 a04 M_SIGN X X X X X X X a05 Digit33 Digit32 Digit31 Digit30 Digit23 Digit22 Digit21 Digit20 a06 Digit13 Digit12 Digit11 Digit10 Digit03 Digit02 Digit01 Digit00 4.3. FUNCTION The packets of a07- a09 indicate the measurement mode of the meter. The following table summarizes the transmitted bit for each mode. Note that the encoding of this packet is different from the encoding of FC1-FC5 switch. For example, if the meter operates in V oltage mode, this a07 packet is 10000000. If VA H Z key is pushed to V AHZ mode, the a08 will be 10000000 also. D0 D1 D2 D3 D4 D5 D6 D7 a07 V A Ohm Continuity Diode Capacitance Hz Duty a08 VAH Z ℃ ℉ X EFmode SCAN Clamp LED a09 ADP0 ADP1 ADP2 ADP3 X X X X 4.4. STATUS The a10-a13 packets indicate the whole status when ES233 is in normal operation. For example, if meter is operated at ACV / MANU range, then a10 packet will set 011000xx. The format of the four packets are shown below. D0 D1 D2 D3 D4 D5 D6 D7 a10 AUTO MANU AC DC OL UL X X a11 SLB3 SLB2 SLB1 LBA T30s BW_full X BW1K HOLD a12 REL ZERO MAX MIN CURRENT X X X a13 Danger OPEN SHORT DISCH X X X X
V 2.2 30 2015/12/15 ES233 AUTO: When auto range is selected. MANU: When manual mode is selected. AC: When AC mode is selected. DC: When DC mode is selected. OL: When ‘OL’ is displayed on LCD. UL: When’UL’ is displayed on LCD. SLB3/SLB2/SLB1: When low battery segment is shown on LCD. LBAT30s: When ‘Lobt’ is shown on LCD. BW1k/full: Indication of low-pass-filter 3dB bandwidth. HOLD: When Data HOLD mode is active. REL: When Relative mode is active. ZERO: When Zero mode is active. MAX/MIN/CURRENT: When MAX/MIN mode is active. If CURRENT=1 means MAX/MIN symbol is blinking on LCD. Clamp: When clamp current mode is selected. Danger: Hazard voltage warning symbol is active on LCD. OPEN: Open state is detected on Scan mode. SHORT: Short circuit is detected on Continuity or diode mode. DISC: The ‘DisC’ is shown on LCD. It means the DUT is necessary to be discharged on Cap mode. 4.5. Unit This packet indicates the measurement unit of the LCD display. D0 D1 D2 D3 D4 D5 D6 D7 a14 Mega Kilo X Mili X Micro X Nano 4.6. Bargraph The a15 packet is the readings of bar -graph shown on LCD panel. B05 – B01 consist of 5- bit unsigned binary code. The B_SIGN is the sign bit of bar-graph. The format of this packet is shown below. D0 D1 D2 D3 D4 D5 D6 D7 a15 B_SIGN X B05 B04 B03 B02 B01 X 4.7. CR Carriage return: The transmitted code is 00001101. 4.8. LF Line feed: The transmitted code is 00001010.
V 2.2 31 2015/12/15 ES233
- Miscellaneous The conditions, which the meter turns on the buzzer, include: (1) Changing measurement mode generates one beep. (2) Pressing any of the push functions generates one beep, if the function is valid. (3) Power on and re-power on generate one beep. (4) Input overflow in voltage and current mode generates one beep every 0.3 seconds (or 3.33 beeps per second.) (5) Continuity(diode) check generates a continuous 2KHz beep whenever the measurement is less then 30Ω(30mV) (6) Auto power off generates a 2KHz beep which lasts for 1.5 seconds. The following figures show the output waveform from the BUZOUT pin. 0.5 mS (a) Continuous 2KHz beep 0.3 sec 0.15 sec (b) 3.33 beep/sec
V 2.2 32 2015/12/15 ES233 5.1. LCD Panel S01 S02 S03 S04 S05 S06 S07 S08 S09 S10 S11 S12 S13 S14 S15 BP1 SLB1 APO SCAN AUTO 4F 4A 4B HOLD 3F 3A 3B Buz 2F 2A BP2 SLB2 RS232 MAN AC Minus 4E 4G 4C DP3 3E 3G 3C DP2 2E 2G BP3 SLB3 Danger bar0 DC bar3 bar4 4D bar6 bar7 bar9 3D bar11 bar12 bar13 2D BP4 bar- bar1 bar2 bar5 bar8 bar10 bar14 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 BP1 2B Diode 1F 1A 1B REL LED μ2 M n Vin ADP0 BP2 2C DP1 1E 1G 1C MAX ℃ Full m2 K μ1 COM ADP1 BP3 bar15 bar17 bar18 1D bar20 MIN ℉ V Ω m1 mAin ADP2 BP4 bar16 bar19 % 1K A Hz F Ain ADP3 LCD Backplane Waveform BP1 BP2 BP3 BP4 V- +3.1 V- +3.1 V- +3.1 V- +3.1 AUTO DC AC APO HOLDSCAN MANU BP1 BP2 BP3 BP4 S13 S14 S15 S16 S17 S18 S19 S20 S26 S25S23 S02 S01 S03 S04 S05 S06 S07 S08 S09 S10 S12 S11 RS232 MINMAX M Hz V A Fm m n K S24 1KFull 10K S21 S27 BP1 BP2 BP3 BP4 S28 TEST ADP0 ADP1 ADP2 ADP3 S29 BP3 AUTO DC AC APO HOLDSCAN MANU BP1 BP2 BP3 BP4 S13 S14 S15 S16 S17 S18 S19 S20 S26 S25S23 S02 S01 S03 S04 S05 S06 S07 S08 S09 S10 S12 S11 RS232 MINMAX M Hz V A Fm m n K S24 1KFull 10K S21 S27 BP1 BP2 BP3 BP4 S28 TEST ADP0 ADP1 ADP2 ADP3 S29 BP3
V 2.2 33 2015/12/15 ES233 5.2. LCD Display On Condition LCD Annunciator Condition V In voltage measurement mode, and diode measurement mode. A In current measurement mode. Ω In resistance measurement mode, and continuity mode. F In capacitance measurement mode. In continuity check mode. In diode mode. % In duty cycle measurement. Hz In frequency mode. ADP1 When ADP1 mode is active. ADP2 When ADP2 mode is active. ADP3 When ADP3 mode is active. ADP4 When ADP4 mode is active. DC In DC voltage or DC current mode. AC In AC voltage or AC current mode. AUTO When automatic full scale range selection is enabled. MANU In manual mode. HOLD When HOLD function is enabled. When Relative function is enabled. MAX When MAX function is enabled. MIN When MIN function is enabled. SCAN When smart (resistance, continuity, diode, capacitance auto check mode) is active. m1 In capacitor measurement mode and the full scale range is in the order of mF. µ1 In capacitor measurement mode and the full scale range is in the order of uF. n In capacitor measurement mode and the full scale range is in the order of nF. m2 In voltage or current measurement mode and the full scale range is in the order of 10 -3. µ2 In current measurement mode and the full scale range id in the order of uA. M In resistance measurement mode and the full scale range is in the order of MΩ. K In resistance measurement mode and the full scale range is in the order of KΩ. ℃ In temperature measurement mode and when the unit is ℃ . ℉ In temperature measurement mode and when the unit is ℉. When the reading is exceeding default hazardous live voltage or OL in DCV or ACV , the HV warning symbol will be display. APO When auto power off function is enabled. SLB1 When voltage (ref. to V-) of LBA T9 pin is less than Vt1, SLB1 will disappear. SLB2 When voltage (ref. to V-) of LBA T9 pin is less than Vt2, SLB2 will disappear. SLB3 When SLB2 disappears for 8 seconds, SLB3 will be blinking. RS232 When RS232 output is enabled. TEST When LED measurement function is enabled.
V 2.2 34 2015/12/15 ES233
5.3 Operating Timing
ES233 incorporates a dual slope ADC with four phases: ZI, AZ, INT and DINT. The timing of each phase are listed below. (1) V oltage / Diode /ADP / Manual Current (for clampmeter) measurement: Phase High resolution High speed ZI 50ms 5ms AZ 25ms 2.5ms INT 100ms 10ms DINT 155ms 15.5ms (2) Current mode for multimeter/Auto Current mode for clampmeter/2-range auto voltage mode: Phase DC / AC DC Lower Range ZI 50ms 50ms AZ 25ms 25ms INT 100ms 1000ms DINT 155ms 175ms (3) Continuity / Ohm measurement: Phase Time ZI 50ms AZ 100ms INT 25ms* DINT 155ms Note: INT time = 250ms for 40.00Ω range (4) Capacitance measurement: Range Total Measurement Time 4.000nF 0.36sec 40.00nF 0.36sec 400.0nF 1.15sec 4.000μF 1.15sec 40.00μF 0.33sec 400.0μF 2.2sec (max) 4.000mF 0.9sec(max) 40.00mF 8.8sec(max) (5) Frequency / Duty cycle / V AHz measurement:Every conversion takes 1.05 second. (6) Temperature measurement: Every conversion takes 1.25 second. Note: 1. In the frequency measurement with auto mode, if the range is changed, the internal clock rate will increase ten times and the new measurement cycle becomes 1/10 times of the original cycle until the range is stable.
V 2.2 35 2015/12/15 ES233 Application Circuit 1. Ture RMS Circuit 123456 A B C D 6 5 4 3 2 1 D C B A Title Num be rRev ision Size B Date:6-M ar-2015 Shee t of File:D:\\Protel 99\\Protel file\\K A035\\KA035_SPEC.ddbDrawn B y : TRMS ( ES5 ) Demo Board Circuit Jack Chang ES233 + C2 10uF + C310uF Z R2 7. 5V V + C70.1uF C60.1uF Z R15. 6V SW1 Pow er S witch V - Ba t- Ba t+ BZ1 Bu zze r V - R910K R1010K B ZO U T 2N 3906 BKOUT R1100K V - B KOU T R11100 HV R2100K V - AL ARM R12100 2N 3904 2N 3904 Shor t R3100K V - AL ARM 1 R13100 2N 3904 V - V + C21 100nF C20 220nF R33 470K C19 100nF C23 47nF C18 22nF C24 1uF C22 220nF R23 100 R35 1 K R37 101K R38 1.111M Precision Resistors OVSG R36 10.01K R3910M Bot t om polygon plane mVi n C25 2.2nF C26 300pF C27 1nF C9 470nF R24 C30 220pF R27 200 C22 Cl ose t o IC C120-100pF C110-100pF R28 200 R26 180K VR1 SLEEP CALENP SDAP SCLP B ZO U T B KOU T AL ARM 1 AL ARM SEG2 0 SEG2 1 SEG2 2 SEG2 3 SEG1 6 SEG1 7 SEG1 8 SEG1 9 SEG1 2 SEG1 3 SEG1 4 SEG1 5 SEG0 8 SEG0 9 SEG1 0 SEG1 1 SEG0 4 SEG0 5 SEG0 6 SEG0 7 SEG0 3 SEG0 2 SEG0 1 B P4 B P3 B P2 B P1 SEG28 SEG27 SEG2 6 SEG2 5 SEG2 4 SEG29 C ESEL SEL2 SEL1 DIS A POSEL TSEL V ST VB AR RS 232
4 MH z
C8470nFR14 200R152. 2K P TC C102.2uF Q42N 3904 Q72N 3904 Q52N 3904 Q62N 3904 VR_CL AM P DACO VRH V R1 R25 900 V R2 200 A0 1 A1 2 A2 3 GND 4SDA5 SCL6 WP7 V CC8 24A 02 V - R19 47K CALENP SDAP SCLP R20 47K ACVH C15 10nF R32 470K C17 22nF C16 22nF R5 100KADP TEM P in VR_ ADP R6 100K R4 100KI VS B uff In1 NC 2 Common3 Output O ffset4 CS 5 DEN Input6 NC 7Ca v8 R MS O UT9 - VS10 + VS11 NC12 Vin13 Buff Out14 ES5 V S + V S - R29100K R304. 7K V R3 500K + C32 4.7uF V S + V S - 10uF 10uF V S + V S - R8 100K Vin1
1 Gnd
DC 3.0V Metallized Polypropylene Film Capacitor : C20 Metallized Polyester Capacitor : C9, C16 , C19, C21 R17 2.2K PTC R18 2.2K PTC Q102N 3904 Q92N 3904 Q122N 3904 Q112N 3904 Q142N 3904 Q132N 3904 R16 2.2K PTC SW1 6 RC_ SW SW3 FC5 SW4 FC4 SW2 SLACDC FC4 FC5 SLACDC V - SW5 FC3 SW6 FC2 SW7 FC1 FC1 FC2 FC3 SW8 HZ SW1 0 REL SW9 MMX HZ R EL MMX V - SW1 2 BKLI T B KLI T SW1 3 KEY SW1 4 HOLD HOLD KEY SW1 5 RANGE RANGE SW1 8uA SW1 9 mA uA/ mAuA/ mA/A uA mA A COM R40 R41 0. 99 R42 0. 01 D4D6 NC 127 CLN10 NC 128 IVS1 ADP2 CHP5 CHN6 CIH7 BUFH8 CIL12 CAZH9 CLP11 CAZL13 BUFL14 RAZ15 V RH16 VR _CLAMP18 O HM C420 O HM C321 O HM C222 O HM C123 OVSG24 O R125 V R427 V R328 V R229 AC VL30 V R526 AC VH31 ADI32 ADO33 TEST534 SGND35 V R136 LP Fout38 mVi n37 LPC139 LPC240 LPC341 CAN42 CAP43 R10K44 R1K45 OVX46 OVH47 OVH148 SLEEP49 FREQ50 CALENP51 SDAP52 BZOUT54 BKOUT55 ALARM 156 ALARM57 BP458 BP359 BP260 BP161 SEG2 962 SEG2 863 SEG26 65SEG25 66SEG24 67SEG23 68SEG22 69SEG21 70SEG20 71SEG19 72SEG18 73SEG17 74SEG16 75SEG15 76SEG14 77SEG13 78SEG12 79SEG11 80SEG10 81SEG09 82SEG08 83SEG07 84SEG06 85SEG05 86SEG04 87SEG03 88SEG02 89SEG01 90CESEL 91SEL2 92SEL1 93DIS 94TS EL 95V ST 96AP OSEL 97VB AR 98RS 232 99O SC2 100O SC1 101 TEM Pin3 CLAMPi n4 VR _ADP19 RS OUT 102 NC 103 HZ 104 MMX 105 REL 106 BKLI T 107 KEY 108 HOLD 109 RANGE 110 FC5 111 FC4 112 FC3 113 FC2 114 FC1 115 SLACDC116 CN 117 CP 118 LB AT9 119 V- 120 V- 121 V+ 122 V+ 123 DGND 124 AGND 125 AGND 126 DACO17 SCLP53 SEG2 764 ES233 ACVH Fi xed 1K Fi xed 10K ADI SW1 7 AC V_SW SW1 1 CL AMPin R710K C13 220pF ADIC3122uF
V 2.2 36 2015/12/15 ES233
- AV G 123456 A B C D 6 5 4 3 2 1 D C B A Title Num be rRev ision Size B Date:30-Oct-2014Shee t of File:D:\\Protel 99\\Protel file\\K A035\\KA035_SPEC.ddbDrawn B y : AVG Demo Board Circuit Jack Chang ES233 + C2 10uF + C310uF Z R2 7. 5V V + C50.1uF C40.1uF Z R15. 6V SW1 Pow er S witch V - Ba t- Ba t+ BZ1 Bu zze r V - R910K R1010K B ZO U T 2N 3906 BKOUT R1100K V - B KOU T R12100 HV R2100K V - AL ARM R13100 2N 3904 2N 3904 Shor t R3100K V - AL ARM 1 R14100 2N 3904 V - V + C20 100nF C19 220nF R36 470K C18 100nF C22 47nF C17 22nF C23 1uF C21 220nF R24 100 R38 1 K R40 101K R41 1.111M Precision Resistors OVSG R39 10.01K R4210M Bot t om polygon plane mVi n C24 2.2nF C25 300pF C26 1nF C8 470nF R25 C31 220pF R18 2.2K PTC R28 200 C22 Cl ose t o IC C110-100pF C100-100pF R19 2.2K PTC R29 200 R27 180K Q10 2N 3904 2N 3904 Q12 2N 3904 Q11 2N 3904 VR1 SLEEP CALENP SDAP SCLP B ZO U T B KOU T AL ARM 1 AL ARM SEG2 0 SEG2 1 SEG2 2 SEG2 3 SEG1 6 SEG1 7 SEG1 8 SEG1 9 SEG1 2 SEG1 3 SEG1 4 SEG1 5 SEG0 8 SEG0 9 SEG1 0 SEG1 1 SEG0 4 SEG0 5 SEG0 6 SEG0 7 SEG0 3 SEG0 2 SEG0 1 B P4 B P3 B P2 B P1 SEG28 SEG27 SEG2 6 SEG2 5 SEG2 4 SEG29 C ESEL SEL2 SEL1 DIS A POSEL TSEL V ST VB AR RS 232
C7470nFR15 200R162. 2K P TC C92.2uF Q42N 3904 Q72N 3904 Q52N 3904 Q62N 3904 VR_CL AM P DACO VRH R1110K R30 15K R31 15K ADI ACVH ADO ACVL +C29 1uF+ C30 1uF 0.1uF R3456K R3356K R323. 9K V R1 R26 900 V R2 200 A0 1 A1 2 A2 3 GND 4SDA5 SCL6 WP7 V CC8 24A 02 V - R20 47K CALENP SDAP SCLP R21 47K SW3 FC5 SW4 FC4 SW2 SLACDC FC4 FC5 SLACDC V - SW5 FC3 SW6 FC2 SW7 FC1 FC1 FC2 FC3 C14 10nF R35 470K C16 22nF C15 22nF R5 100KADP TEM P in VR_ ADP R6 100K R4 100KI VS SW8 HZ SW1 0 REL SW9 MMX HZ R EL MMX V - SW1 2 BKLI T B KLI T SW1 3 KEY SW1 4 HOLD HOLD KEY SW1 5 RANGE RANGE D51N 4148 D41N 4148 R8 100K Vin1 DC 3.0V Metallized Polypropylene Film Capacitor : C19 Metallized Polyester Capacitor : C8, C15 , C18, C20 SW1 6 RC_ SW R17 2.2K PTC Q14 2N 3904 Q13 2N 3904 SW1 8uA SW1 9 mA uA/ mAuA/ mA/A uA mA A COM R43 R44 0. 99 R45 0. 01 D7D8 NC 127 CLN10 NC 128 IVS1 ADP2 CHP5 CHN6 CIH7 BUFH8 CIL12 CAZH9 CLP11 CAZL13 BUFL14 RAZ15 V RH16 VR _CLAMP18 O HM C420 O HM C321 O HM C222 O HM C123 OVSG24 O R125 V R427 V R328 V R229 AC VL30 V R526 AC VH31 ADI32 ADO33 TEST534 SGND35 V R136 LP Fout38 mVi n37 LPC139 LPC240 LPC341 CAN42 CAP43 R10K44 R1K45 OVX46 OVH47 OVH148 SLEEP49 FREQ50 CALENP51 SDAP52 BZOUT54 BKOUT55 ALARM 156 ALARM57 BP458 BP359 BP260 BP161 SEG2 962 SEG2 863 SEG26 65SEG25 66SEG24 67SEG23 68SEG22 69SEG21 70SEG20 71SEG19 72SEG18 73SEG17 74SEG16 75SEG15 76SEG14 77SEG13 78SEG12 79SEG11 80SEG10 81SEG09 82SEG08 83SEG07 84SEG06 85SEG05 86SEG04 87SEG03 88SEG02 89SEG01 90CESEL 91SEL2 92SEL1 93DIS 94TS EL 95V ST 96AP OSEL 97VB AR 98RS 232 99O SC2 100O SC1 101 TEM Pin3 CLAMPi n4 VR _ADP19 RS OUT 102 NC 103 HZ 104 MMX 105 REL 106 BKLI T 107 KEY 108 HOLD 109 RANGE 110 FC5 111 FC4 112 FC3 113 FC2 114 FC1 115 SLACDC116 CN 117 CP 118 LB AT9 119 V- 120 V- 121 V+ 122 V+ 123 DGND 124 AGND 125 AGND 126 DACO17 SCLP53 SEG2 764 ES233 Fi xed 1K Fi xed 10K ACVL ACVH ADO ADI TEST5 SW1 7 AC V_SW SW1 1 CL AMPin R710K C12 220pF TEST5 C324.7uF
V 2.2 37 2015/12/15 ES233 Package Information 1. 128L LQFP Outline drawing 2. Dimension parameters