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Modular Power Meter and Power Sensors Data Sheet
One group of characteristic types describes ‘attributes’ common to all products of a given model or option. Examples of characteristics that describe ‘attributes’ are product weight, and 50 ohm input Type-N connector. In these examples product weight is an ‘approximate’ value and a 50 ohm input is ‘nominal’. These two terms are most widely used when describing a product’s ‘attributes’. The second group describes ‘statistically’ the aggregate performance of the population of products. These characteristics describe the expected behavior of the population of products. They do not guarantee the performance of any individual product. No measurement uncertainty value is accounted for in the specification. These specifications are referred to as ‘typical’. Conditions The power meter and sensor will meet its specifications when: – Stored for a minimum of two hours at a stable temperature within the operating temperature range, and turned on for at least 30 minutes – The power meter and sensor are within their recommended calibration period, and – Used in accordance to the information provided in the N8262A P-Series Modular Power Meter User’s Guide . Specification Definitions There are two types of product specifications: Warranted Specifications Warranted specifications are specifications which are covered by the product warranty and apply over 0 to 55ºC unless otherwise noted. Warranted specifications include measurement uncertainty calculated with a 95% confidence. Characteristic Specifications Characteristic specifications are specifications that are not warranted. They describe product performance that is useful in the application of the product. These characteristic specifications are shown in italics. Characteristic information is representative of the product. In many cases, it may also be supplemental to a warranted specification. Characteristic specifications are not verified on all units. There are several types of characteristic specifications. These types can be placed in two groups: General Features Number of channels Dual channel Frequency range N1921A P-Series wideband power sensor, 50 MHz to 18 GHz N1922A P-Series wideband power sensor, 50 MHz to 40 GHz Measurements Average, peak and peak-to-average ratio power measurements are provided with free-run or time gated definition. Time parameter measurements of pulse rise time, fall time, pulse width, time to positive occurance and time to negative occurance are also provided. Sensor compatibility P-Series modular power meter is compatible with all Keysight P-Series wideband power sensors, E-Series power sensors (except E9320 range) and 8480 Series power sensors 1. 1. Information contained in this document refers to operation with P-Series power sensors. For specifications when used with 8480 and E-Series power sensors (except E9320 range), refer to Lit Number 5965-6382E . Bundled Intuitive BenchVue Software The N8262A P-Series power meter is supported by the Keysight BenchVue software (version 3.0 and above). BenchVue makes it easy to control your power meter to log data and visualize measurements in a wide array of display options without any programming. This software is available on the Keysight Instrument Control DVD, which is included with each meter. You can download the latest version of the software cost free at www.keysight.com/find/BenchVue. Upgrading to the paid BenchVue Power Meter Pro version (BV0007A) provides unrestricted data logging. Keysight recommends that you use the BenchVue software for new projects or applications. 02 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
- See Appendix A on page 9 for measurement uncertainty calculations.
- Specification applies only when the Off video bandwidth is selected.
- The Minimum Pulse Width is the recommended minimum pulse width viewable on the power meter,
where power measurements are meaningful and accurate, but not warranted.
- Specification is valid over –15 to +20 dBm, and a frequency range 0.5 to 10 GHz, DUT Max. SWR <
Averaging set to 32, in Free Run mode. Figure 1. Measured rise time percentage error versus signal under test rise time
Instrumentation linearity ± 0.8% Timebase Timebase range 2 ns to 100 msec/div Accuracy ± 10 ppm Jitter ≤ 1 ns Trigger Internal trigger Range Resolution Level accuracy Latency 6 Jitter –20 to +20 dBm 0.1 dB ± 0.5 dB 160 ns ± 10 ns ≤ 5 ns rms External TTL trigger input High > 2.4 V Low < 0.7 V Latency7 90 ns ± 10 ns Minimum trigger pulse width 15 ns Minimum trigger repitition period 50 ns Impedance 50 Ω Jitter ≤ 5 ns rms Maximum trigger Voltage input
15 V emf from 50 Ω dc (current < 100 mA), or
60 V emf from 50 Ω dc (pulse width < 1 s, current < 100 mA)
External TTL trigger output Low to high transition on trigger event High > 2.4 V Low < 0.7 V Latency 8 30 ns ± 10 ns Impedance 50 Ω Jitter ≤ 5 ns rms Trigger delay Delay range Delay resolution ± 1.0 s, maximum 1% of delay setting, 10 ns maximum Trigger hold-off Range Resolution 1 μs to 400 ms 1% of selected value (to minimum of 10 ns) Trigger level threshold hysteresis Range Resolution ± 3 dB 0.05 dB P-Series Modular Power Meter Specifications 6. Internal trigger latency is defined as the delay between the applied RF crossing the trigger level and the meter switching into the triggered state. 7. External trigger latency is defined as the delay between the applied trigger crossing the trigger level and the meter switching into the triggered state. 8. External trigger output latency is defined as the delay between the meter entering the triggered state and the output signal switching. 04 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
P-Series Wideband Power Sensor Specifications The P-Series wideband power sensors are designed for use with the P-Series power meters N1911/12A and the P-Series modular power meter N8262A only. Sensor model Frequency range Dynamic range Damage level Connector type N1921A 50 MHz to 18 GHz –35 dBm to +20 dBm (≥ 500 MHz) –30 dBm to +20 dBm (50 MHz to 500 MHz) +23 dBm (average power); +30 dBm (< 1 μs duration) (peak power) Type N (m) N1922A 50 MHz to 40 GHz –35 dBm to +20 dBm (≥ 500 MHz) –30 dBm to +20 dBm (50 MHz to 500 MHz) +23 dBm (average power); +30 dBm (< 1 μs duration, peak power) 2.4 mm (m) Maximum SWR Frequency band N1921A/N1922A 50 MHz to 10 GHz 1.2 10 GHz to 18 GHz 1.26 18 GHz to 26.5 GHz 1.3 26.5 GHz to 40 GHz 1.5 Sensor Calibration Uncertainty9 Frequency band N1921A N1922A 50 MHz to 500 MHz 4.5% 4.3% 500 MHz to 1 GHz 4.0% 4.2% 1 GHz to 10 GHz 4.0% 4.4% 10 GHz to 18 GHz 5.0% 4.7% 18 GHz to 26.5 GHz 5.9% 26.5 GHz to 40 GHz 6.0% Physical Characteristics Dimensions (Length x Width x Height) N1921A N1922A 135 mm x 40 mm x 27 mm 127 mm x 40 mm x 27 mm Weights with cable Option 105 Option 106 Option 107 0.4 kg 0.6 kg 1.4 kg Fixed sensor cable lengths Standard Option 106 Option 107 1.5 m (5-feet) 3.0 m (10-feet) 10 m (31-feet) 9. Beyond 70 % Humidity, an additional 0.6 % should be added to these values. 05 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
Note: The 1 mW power reference is provided for calibration of E-Series (except E9320 range) and 8480 Series power sensors. The P-Series sensors are automatically calibrated and do not need this reference for calibration. Power output 1.00 mW (0.0 dBm). Factory set to ± 0.4% traceable to the National Physical Laboratory (NPL) UK Accuracy (over 2 years) ± 1.2% (0 to 55 ºC) Frequency 50 MHz nominal SWR 1.08 (0 to 55 ºC) 1.05 typical Connector type Type N (f), 50 Ω Front panel inputs/outputs Recorder output(s) Analog 0 to 1 volt, 1 kΩ output impedance. There are two recorder outputs with SMB connector Trigger input Input has TTL compatible logic levels and uses a SMB connector Rear panel inputs/outputs 100BaseT LAN Interface allow communication with an external controller Ground Binding post, accepts 4 mm plug or bare-wire connection Line Power Input voltage range 100 to 120 V ± 10% 220 to 240 V ± 10% Input frequency range 50 to 60 Hz ± 10% (all voltages) 400 to 440 Hz (100 to 120 V only) Power requirement Not exceeding 75 VA (50 Watts) Remote programming Interface 10/100BaseT LAN interface Command language SCPI standard interface commands. Measurement speed Measurement speed via remote interface ≥ 1500 readings per second Regulartory information Electromagnetic compatibility Complies with the requirements of the EMC Directive 89/336/EEC Product safety Conforms to the following product specifications: EN61010-1: 2001/IEC 1010-1:2001 EN 55011:1991 IEC 61326-1:1997+A1:1998/EN 61326-1:1997+A1:1998 CISPR 11:1990/EN 55011:1991 Canada: CSA C22.2 No. 61010- 1:2004 USA: UL: 61010- 1:2004 06 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
Dimensions The following dimensions exclude front and rear panel protrusions: Net weight ≤ 3.5 kg (7.7 lb) approximate Shipping weight ≤ 7.7 kg (17.0 lb) approximate Environmental conditions General Complies with the requirements of the EMC Directive 89/336/EEC. Operating Temperature Maximum humidity Minimum humidity Maximum altitude 0 °C to 55 °C 95% at 40 °C (non-condensing) 15% at 40 °C (non-condensing) 3,000 meters (9,840 feet) Storage Non-operating storage temperature Non-operating maximum humidity Non-operating maximum altitude –40 °C to +70 °C 90% at 65 °C (non-condensing) 15,420 meters (50,000 feet) System Specifications and Characteristics The video bandwidth in the power meter can be set to High, Medium, Low or Off. The video bandwidths stated in the table below are not the 3 dB bandwidths, as the video bandwidths are corrected for optimal flatness (except the Off filter). Refer to Figure 2 for information on the flatness response. The Off video bandwidth setting provides the warranted rise time and fall time specification and is the recommended setting for minimizing overshoot on pulse signals. Dynamic response - rise time, fall time, and overshoot versus video bandwidth settings Parameter Video bandwidth setting Low: 5 MHz Medium: 15 MHz High: 30 MHz Off < 500 MHz > 500 MHz Rise time / fall time10 < 56 ns < 25 ns ≤ 13 ns < 36 ns ≤ 13 ns Overshoot 11 < 5% < 5% For Option 107 (10 m cable), add 5 ns to the rise time and fall time specifications. 10. Specified as 10% to 90% for rise time and 90% to 10% for fall time on a 0 dBm pulse. 11. Specified as the overshoot relative to the settled pulse top power. Recorder Output and Video Output The recorder output is used to output the corresponding voltage for the measurement that user sets on the Upper/Lower window of the power meter. The video output is the direct signal output detected by the sensor diode, with no correction applied. The video output provides a DC voltage proportional to the measured input power through a BNC connector on the rear panel. The DC voltage can be displayed on an oscilloscope for time measurement. This option replaces the recorder output on the rear panel. The video output impedance is 50 ohm. 07 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
measurements were performed at –10 dBm with power sensors with 1.5 m cable lengths.
- Within one hour after a zero, at a constant temperature, after 24 hour warm-up of the power meter.
This component can be disregarded with Auto-zero mode is set to ON.
- Measured over a one-minute interval, at a constant temperature, two standard deviations, with
Figure 2. N192XA Error in peak-to-average measurements for a two-tone input (High, Medium, Low or Off filters) changing the video bandwidth. The measurement noise on a time-gated measurement will depend on the time gate length. in this mode can approximately be reduced by √(gate length/10 ns) to a limit of 50 nW.
Uncertainty calculations for a power measurement (settled, average power) [Specification values from this document are in bold italic, values calculated on this page are underlined.] Process 3. Calculate meter uncertainty: Calculate noise contribution – If in Free Run mode, Noise = Measurement noise x free run multiplier – If in Trigger mode, Noise = Noise-per-sample x noise per sample multiplier 4. Zero uncertainty 5. Sensor calibration uncertainty (RSS three terms from steps 3, 4 and 5) 7. Standard uncertainty of mismatch 8. Combined measurement uncertainty @ k=1 W Max(r DUT ) Y Max(r Sensor ) sys rss UC = 14. The noise to power ratio is capped for powers > 100 uW, in these cases use: Noise/100 µW. Appendix A 09 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
- The noise to power ratio is capped for powers > 100 uW, in these cases use: Noise/100 μW. Uncertainty calculations for a power measurement (settled, average power) [Specification values from this document are in bold italic, values calculated on this page are underlined.] Process 3. Calculate meter uncertainty: Calculate noise contribution – If in Free Run mode, Noise = Measurement noise x free run multiplier – If in Trigger mode, Noise = Noise-per-sample x noise per sample multiplier 4. Zero uncertainty 5. Sensor calibration uncertainty (RSS three terms from steps 3, 4 and 5) 7. Standard uncertainty of mismatch 8. Combined measurement uncertainty @ k=1 0.03% ± 4.46% 0.115 0.8% 0.03% 0.8% 0.111 1.25 2.23 1.26 4.0% 4.08%
1 GHz
Max(r DUT ) Y Max(r Sensor ) sys rss UC = Worked Example 10 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
System uncertainty contribution - 1 sigma (%) 1.0% 10.0% 100.0% -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 Power (dBm) N1921A: 500 MHz to 10 GHz N1922A:18 to 40 GHz Other bands Note: The above graph shows the standard uncertainty of mismatch = rDUT. rSensor / r2, rather than the mismatch uncertainty limits. This term assumes that both the source and load have uniform magnitude and uniform phase probability distributions. C. Combine A & B UC = (Value from Graph A) + (Value from Graph B) Note: This graph is valid for conditions of free-run operation, with a signal within the video bandwidth setting on the system. Humidity < 70%. B. Standard uncertainty of mismatch. Standard uncertainty of mismatch - 1 sigma (%) 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 rSensor rDUT SWR r 1.0 0.00 1.05 0.02 1.10 0.05 1.15 0.07 1.20 0.09 1.25 0.11 1.30 0.13 1.35 0.15 1.40 0.17 1.45 0.18 1.5 0.20 1.6 0.23 1.7 0.26 SWR r 1.8 0.29 1.90 0.31 2.00 0.33 2.10 0.35 2.20 0.38 2.30 0.39 2.40 0.41 2.50 0.43 2.60 0.44 2.70 0.46 2.80 0.47 2.90 0.49 3.00 0.50 Graphical Example A. System contribution to measurement uncertainty versus power level (equates to step 6 result/2 11 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
Keysight N8262A P-Series Modular Power Meter and Power Sensors Configuration Guide , literature number 5989-6608EN Keysight N8262A P-Series Modular Power Meter and Power Sensors Technical Overview , literature number 5989-6606EN Keysight N8262A P-Series Modular Power Meter Demo Guide , literature number 5989-6636EN Fundamental of RF and Microwave Power Measurements (Part 1) Application Notes, literature number 5988-9213EN Fundamental of RF and Microwave Power Measurements (Part 2) Application Note, literature number 5988-9214EN Fundamental of RF and Microwave Power Measurements (Part 3) Application Note, literature number 5988-9215EN Fundamental of RF and Microwave Power Measurements (Part 4) Application Note, literature number 5988-9216EN
4 Steps for Making Better Power Measurement Application Note ,
literature number 5965-8167E Related Web Resources For more information on the P-Series modular power meter and sensors, visit: www.keysight.com/find/N8262A For the latest literature updates, visit: www.keysight.com 12 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
N8262A P-Series modular power meter (LXI-C compliant) Standard-shipped accessories – Power cord – Product CD-ROM (contains English and localized User’s Guide and Programming Guide) – N1918A Power Analysis Manager CD – Keysight Instrument Control DVD (contains IO Libraries Suite, Command Expert and BenchVue software) – Calibration certificate Warranty – Standard 3-years, Return-to-Keysight warranty and service plan for the N8262A – 3 months for standard-shipped accessories Options Sensors Description N192x A-105 P-Series sensors fixed 1.5m (5ft) cable length N192x A-106 P-Series sensors fixed 3m (10ft) cable length N192x A-107 P-Series sensors fixed 10m (31ft) cable length Cables Description N1917A P-series meter cable adaptor, 1.5m (5ft) N1917B P-Series meter cable adaptor, 3m (10ft) N1917C P-Series meter cable adaptor, 10m (31ft) N1917D P-Series meter cable adaptor, 1.8 m (6 ft) N191xA-200 11730x cable adaptor Other accessories Description N1918A-100 Power Analyzer PC software (PC license) N1918A-200 Power Analyzer PC software (USB dongle license) 34131A Transit case for half-rack 2U-high instruments (e.g., 34401A) 34161A Accessory pouch N8262A-908 Rack mount kit (one instrument) Software Description BV0007A BenchVue Power Meter Pro App license Warranty and calibration Description N8262A-1A7 ISO17025 calibration data including Z540 compliance N8262A-A6J ANSI Z540 compliant calibration test data R-51B-001-5Z Warranty Assurance Plan - Return to Keysight - 5 years R-50C-011-3 Calibration Assurance Plan - Return to Keysight - 3 years R-50C-011-5 Calibration Assurance Plan - Return to Keysight - 5 years R-50C-021-3 ANSI Z540-1-1994 Calibration up front - 3 years plan R-50C-021-5 ANSI Z540-1-1994 Calibration up front - 5 years plan Documentation Description N8262A-0B1 Hard copy English language User’s Guide and Installation Guide N8262A-0BF Hard copy English language Programming Guide N8262A-0BK Hard copy English language User’s Guide and Programming Guide N8262A-0BW Hard copy English language Service and Calibration Guide N8262A-ABF Hard copy French localization User’s Guide N8262A-ABJ Hard copy Japanese localization User’s Guide N192xA-0B1 Hard copy P-Series sensor English language manual
Ordering Information
13 | Keysight | N8262A P-Series Modular Power Meter and Power Sensors - Data Sheet
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