PG900

PG900 PICO | Alldatasheet

Document overview

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Technical content

USB differential pulse generators PicoSource PG900 Series www.picotech.com Three PicoSource models Integrated 60 ps pulse outputs: PG911 Tunnel diode 40 ps pulse heads: PG912 Both output types: PG914 Integrated pulse outputs Differential with deskew 60 ps transition time

2.5 V to 6 V amplitude

Output deskew with 1 ps resolution Low-jitter trigger input and output User-variable pulse width Internal trigger clock Trigger hold-off Configuration USB 2.0 connected Microsoft Windows compatible

Applications

TDR/TDT network and match analysis Spectral and flatness measurements Timing, jitter, and crosstalk determination Semiconductor testing Impulse ultra-wideband radars Laser diode drivers

USB differential pulse generators The fast-transition pulse can stimulate a transmission path, device, or network with a broad-spectrum signal in a single instant. These signals, combined with differential capability, are valuable for making high-speed broadband measurements in many fields such as time domain reflectometry, semiconductor testing, gigabit interconnect and port testing, and in radar systems. High-speed differential data is becoming the dominant measurement challenge in digital, computing, interconnect and telecommunications systems. Despite this need, cost- effective, fast-transition differential pulse generators were hard to find ... until now. A versatile, portable pulse generator The PicoSource PG900 Series of low-jitter triggered differential USB pulse generators offer a range of advanced features:

• The pulse outputs are optimized for broad spectral content (fastest transition time) to best suit spectral and time-domain transmission and reflectometry measurements
• The internal clock provides stand-alone, self-triggered operation
• Trigger input and output allow the pulse generators to source or respond to system triggers
• Differential outputs ensure that the proliferation of gigabit differential interconnects and systems (such as SATA, USB3, HDMI, Ethernet) can all be addressed Essential to any differential measurement is the ability to adjust for small but significant velocity and path length differences that are bound to exist in any measurement setup. The PicoSource PG900 pulse generator outputs can each be adjusted (time-skewed) by 1 ns (integrated pulse outputs) or 200 ps (tunnel diode pulse heads) in 1 ps increments to deskew path differences before the measurement, or to deliberately stress a transmission path with timing skew. Despite their small size and portability, PicoSource pulse generators have plenty of drive capability, with integrated step recovery diode outputs of up to 6 V pk each into 50 Ω. That’s a powerful 12 V pk differential pulse amplitude to drive lossy paths or stress system ports. Outputs are adjustable in 10 mV steps down to 2.5 V pk. An adjustable amplitude limit is provided to protect sensitive devices, and 20 dB attenuators are supplied fitted to the pulse outputs for small-signal optimal match applications. Key specifications PicoSource PG911 and PG914
• Integrated 50 Ω SMA(f) step recovery diode outputs
• < 60 ps single-ended pulse transition time
• Two 2.5 V to 6 V variable amplitude outputs
• ±1 ns timing deskew in 1 ps steps
• 20 dB 10 GHz SMA(m-f) attenuators supplied fitted to SRD pulse outputs PicoSource PG912 and PG914
• External 50 Ω N(m) positive and negative tunnel diode pulse heads
• < 40 ps pulse transition time
• Fixed 200 mV output amplitude
• ±500 ps timing deskew in 1 ps steps
• Inter-series N(f)–SMA(m) adaptors included with pulse heads All PicoSource PG900 models
• Differential outputs
• 200 ns to 4 μs pulse width
• Adjustable 1 μs to 1 s internal clock period
• Typical 3.0 ps RMS jitter relative to external trigger

Step recovery diode variable-amplitude pulse The positive (fast rise) and negative (fast fall) pulses are both ground-referenced and each pulses in opposite polarity to its selected amplitude. This amplitude (the “mark”) is held for the selected pulse width and then returns to ground. Further pulses are prevented for the selected hold-off period and thereafter repeat at 40 ns after the next received trigger. When the internal clock is selected, the pulse repeats at the selected period and hold-off is inactive. An output trigger is generated 40 ns before every pulse, however initiated. Pulse transition time is typically 55 ps and spectral content extends to 12 GHz. The negative (fast fall) pulse can be selected for even faster transition time by selecting “fast” rather than “smooth” mode. Pulse aberration is compromised but transition time is typically 45 ps and spectral content extends to around 14 GHz.

Tunnel diode head fixed-amplitude pulse The positive (fast rise) and negative (fast fall) pulses are both DC offset referenced and each pulses in opposite polarity by its independent fixed amplitude. This amplitude (the “mark”) is held for the selected pulse width and then returns to ground. Further pulses are prevented for the selected hold-off period and thereafter repeat at 40 ns after the next received trigger. When the internal clock is selected, the pulse repeats at the selected period and hold-off is inactive. An output trigger is generated 40 ns before every pulse, however initiated. Pulse transition time is typically 40 ps and spectral content extends to 14 GHz.

The following diagrams demonstrate differential and single-ended TDR and TDT setup options for a PicoSource pulse generator, PicoScope® 9300 Series sampling oscilloscope, and the device under test (DUT). In all setups shown, the PG911 or PG912 pulse generator can be replaced by a PicoSource PG914. PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG912 TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG911 PULSE + PULSE - TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 DRIVE 1 DRIVE 2 PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT Differential connection Negative TD pulse head Positive TD pulse head 20 dB attenuator Power divider kit Single-ended connection PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 T T Terminated load, TDR kit T D.U.T . D.U.T . D.U.T . D.U.T . D.U.T . PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG912 TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG911 PULSE + PULSE - TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 DRIVE 1 DRIVE 2 PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT Differential connection Negative TD pulse head Positive TD pulse head 20 dB attenuator Power divider kit Single-ended connection PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 T T Terminated load, TDR kit T D.U.T . D.U.T . D.U.T . D.U.T . D.U.T . TDT applications PicoSource pulse generators can also be used to realize time domain transmission (TDT) with a PicoScope 9300 sampling oscilloscope without that function (PicoScope 9301, 9302, 9321, and 9341). They also offer the versatility of a remotely- placed signal generator for long line or installed system testing when used with any of the PicoScope 9300 models. PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG912 TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG911 PULSE + PULSE - TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 DRIVE 1 DRIVE 2 PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT Differential connection Negative TD pulse head Positive TD pulse head 20 dB attenuator Power divider kit Single-ended connection PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 T T Terminated load, TDR kit T D.U.T . D.U.T . D.U.T . D.U.T . D.U.T . PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG912 TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG911 PULSE + PULSE - TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 DRIVE 1 DRIVE 2 PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT Differential connection Negative TD pulse head Positive TD pulse head 20 dB attenuator Power divider kit Single-ended connection PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 T T Terminated load, TDR kit T D.U.T . D.U.T . D.U.T . D.U.T . D.U.T . TDT and crosstalk application PicoSource pulse generators can be used with a PicoScope 9341 four-channel sampling oscilloscope for simultaneous time domain transmission and crosstalk assessment. PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG912 TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT PicoSource PG911 PULSE + PULSE - TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 DRIVE 1 DRIVE 2 PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9301 CH 1 CH 2 PRESCALE DIRECT AUX OUTPUT AUX INPUT Differential connection Negative TD pulse head Positive TD pulse head 20 dB attenuator Power divider kit Single-ended connection PicoSource PG911 PULSE + PULSE – TRIG OUTPUT TRIG INPUT PicoScope 9341 PRESCALE DIRECT AUX OUTPUT AUX INPUT CH 1 CH 2 CH 3 CH 4 T T Terminated load, TDR kit T D.U.T . D.U.T . D.U.T . D.U.T . D.U.T . Single-ended measurements Single-ended measurements can be performed with a two-channel sampling oscilloscope. Differential measurements can also be tackled by first measuring transmission and then changing connections for crosstalk measurement. Unconnected ports should be correctly terminated in this case. TDR applications PicoSource pulse generators can be used to realize time domain reflectometry with a PicoScope 9300 Series sampling oscilloscope without that function (PicoScope 9301, 9302, 9321 and 9341).

PicoSource PG900 pulse control software for Windows PicoSource pulse generators are connected by USB, and controlled by the supplied PicoSource PG900 software. This straightforward application runs on Microsoft Windows and features a clear graphical display of the pulse, limits and trigger settings as they are applied. Default and user pulse settings can be saved for future use, and the software can be tested in demonstration mode. PicoSource PG900 software can be downloaded from picotech.com/downloads. Front and rear panels All models DC power input USB port Signal ground terminal PicoSource PG911 SRD pulse outputs Trigger output and input PicoSource PG914 SRD pulse outputs Trigger output and input TD pulse head drive outputs PicoSource PG912 Trigger output and input TD pulse head drive outputs

PicoSource PG900 Series pulse generator specifications PicoSource PG911 and PG914 INTEGRATED STEP RECOVERY DIODE PULSE OUTPUTS Pulse outputs Positive-going (fast rise) and negative-going (fast fall) outputs returning to 0 V. Adjustable amplitude and timing parameters. Fast transition on leading edge. Output impedance 50 Ω Output connector SMA(f) Output amplitude Adjustable 2.5 V to 6 V in 10 mV steps Output accuracy ±10% Output amplitude limit 2.5 V to 6 V, adjustable in 100 mV increments Output protection limit ±10 V DC, or AC peak Duty cycle limit 50% maximum (for 2.5 V to 4 V amplitude) 20% maximum (up to 6 V amplitude) Differential deskew range Adjustable in 1 ps steps over 2 ns range POSITIVE OR NEGATIVE-GOING, SMOOTH MODE NEGATIVE-GOING, FAST MODE Pulse transition time < 60 ps (10% to 90%) < 50 ps (10% to 90%) Pulse aberrations < +20%, –10% for first 2 ns < ±7% to 10 ns < ±2% to (pulse width–50 ns) < +40%, –10% Trailing edge transition time < 8 ns (10% to 90%) PicoSource PG912 and PG914 DRIVE OUTPUTS WITH TUNNEL DIODE PULSE HEADS Positive tunnel diode pulse head Positive-going (fast rise) output on < 70 mV pedestal. Fixed amplitude and adjustable timing parameters. Fast transition on leading edge. Negative tunnel diode pulse head Negative going (fast fall) output on < –70 mV pedestal. Fixed amplitude and adjustable variable timing parameters. Fast transition on leading edge. Output impedance 50 Ω ±2 Ω Output connector N(m) Output amplitude Fixed 200 mV Output protection limit ±0 V DC, or AC peak, except open or short circuit reflection of the source signal. No prolonged reverse bias allowed. Output accuracy ±25% Differential deskew range Adjustable in 1 ps steps over 200 ps minimum, 300 ps typical Pulse transition time < 40 ps (10 % to 90%) Pulse aberrations < ±20%, for first 2 ns < ±7% to 15 ns < ±2% to (pulse width – 50 ns)

Trailing edge transition time < 8 ns (10% to 90%) Dimensions (each pulse head) 80 mm x 28 mm x 25 mm Weight (each pulse head) 125 g All models and outputs PULSE TIMING Pulse trigger source External input, manual single shot event or internal clock Jitter relative to leading edge 3.0 ps RMS typical. 3.5 ps RMS maximum. Post-trigger delay to pulse leading edge Fixed 42 ns ±2 ns Allows leading-edge capture on sampling oscilloscopes Pulse width and accuracy 200 ns to 4 µs ±10% ±50 ns, adjustable in steps of 25 ns Pulse width jitter < 150 ppm of width RMS External trigger hold-off Adjustable 1 µs to 1.3 ms in steps of 200 ns, to maximum of 345 ms in steps of < 15 ppm INTERNAL CLOCK SPECIFICATION Period and accuracy Adjustable 1 µs to 1 s, ±100 ppm ±10 ns in steps of 200 ns EXTERNAL TRIGGER INPUT SPECIFICATION Impedance 50 Ω ±1% Connector SMA(f) Maximum input level +16 dBm, or ±2 V DC or AC pk Bandwidth 1 GHz, DC coupled Trigger polarity Selectable rising or falling edge Trigger level Selectable –1 V to +1 V in steps of 1 mV Sensitivity < 50 mV pk-pk DC to 100 MHz, rising linearly to 100 mV pk-pk at 1 GHz Minimum pulse width 500 ps at 100 mV pk-pk EXTERNAL TRIGGER OUTPUT SPECIFICATION Trigger output pulse Fixed amplitude and timing parameters, positive edge polarity, trigger is leading edge Impedance 50 Ω ±0.5 Ω Connector SMA(f) Amplitude and offset > 700 mV fixed, on logic low of 0 V ± < 100 mV Pulse width 500 ns ±100 ns Trigger to trigger output delay 4 ns ±1 ns Trigger to trigger output jitter 2.5 ps RMS typical. 3 ps RMS maximum. Transition time < 400 ps (10% to 90%)

AC to DC adaptor 5 V ±5% at 1.6 A, 8 W, universal plug (adaptor included) PC requirements Windows XP SP3 to Windows 10 Operating temperature range +5 °C to +40 °C Storage temperature range –20 °C to +50 °C Temperature range for stated specifications +15 °C to +25 °C or TCAL (temperature of calibration) ±5 °C Operating humidity range < 85% RH (non-condensing) at +35 °C Storage humidity range < 95% RH (non-condensing) Altitude range Up to 2000 m Pollution degree 2 Ingress protection IP20 Dimensions (instrument) 190 mm W x 180 mm D x 40 mm H Weight (instrument) 560 g Compliance FCC (EMC), CE (EMC and LVD) Warranty 5 years Specifications describe guaranteed performance over the stated temperature range and apply after the instrument’s temperature has been stabilized in one hour of continuous operation. All specifications are subject to change without notice. Factory calibration cycle. For optimum performance, the instrument should have a complete verification of specifications once every 12 months.

Order code Product Description USD* EUR* GBP* TA237 TA237 14 GHz 25 ps TDR kit

18 GHz 50 Ω SMA(m-m) within-series adaptor

18 GHz SMA(f) reference short

18 GHz SMA(f) reference load

TA238 TA238 14 GHz power divider kit

18 GHz 50 Ω SMA(f-f-f) 3-resistor 6 dB power divider

2 x 10 cm precision coaxial SMA(m-m) cable For use with a PicoScope 9300 Series oscilloscope 539 479 379 TA181 TA181 attenuator 3 dB

10 GHz 50 Ω SMA(m-f)

75 67 53TA261 TA261 attenuator 6 dB TA262 TA262 attenuator 10 dB TA173 TA173 attenuator 20 dB TA172 TA172 inter-series adaptor 18 GHz, 50 Ω N (f)- SMA(m) 129 119 92 TA170 TA170 connector saver adaptor 18 GHz 50 Ω SMA(m-f) 20 18 14 TA263 TA263 precision high-flex unsleeved coaxial cable 60 cm, SMA(m-m) 1.9 dB loss @ 13 GHz 75 67 53 TA264 TA264 precision high-flex unsleeved coaxial cable 30 cm, SMA(m-m) 1.1 dB loss @ 13 GHz 65 58 46 TA265 TA265 precision sleeved coaxial cable 30 cm, SMA(m-m) 1.3 dB loss @ 13 GHz 65 58 46 TA312 TA312 precision sleeved coaxial cable 60 cm, SMA(m-m) 2.2 dB loss @ 13 GHz 70 59 47 TA356 Dual-break torque wrench SMA/PC3.5/K-type Preset torque limit 1 N·m (8.85 in·lb) Across flats: 8 mm * Prices correct at the time of publication. Sales taxes not included. Please contact Pico Technology for the latest prices before ordering. Calibration service Order code Description USD* EUR* GBP* CC054 Calibration certificate for PicoSource PG911 and PG912 pulse generators 269 229 189 CC055 Calibration certificate for PicoSource PG914 pulse generator 379 329 269 * Prices correct at the time of publication. Sales taxes not included. Please contact Pico Technology for the latest prices before ordering.

ALL KITS CONTAIN: PicoSource PG900 software disk • Quick Start Guide • AC to DC adaptor 5 V DC at 2 A, universal input USB 2.0 cable 1.8 m • PicoWrench RF combination wrench • Storage and carry case Order code Description PG911 PG912 PG914 Not available separately Positive 40 ps tunnel diode pulse head (attached to the device) • • Not available separately Negative 40 ps tunnel diode pulse head (attached to the device) • • TA172 12 GHz N(f) to SMA(m) adaptor (2 pack) • • TA173 10 GHz 20 dB SMA(m-f) attenuator (2 pack) • • Not available separately 50 Ω coaxial SMA(m-m) pulse drive cable 60 cm (2 pack) • • PicoSource PG911 PicoSource PG912 PicoSource PG914 Kit contents

Ordering information

Order code Description USD* EUR* GBP* PP977 PicoSource PG911 pulse generator: 50 Ω SMA(f) < 60 ps differential pulse outputs, 2.5 V to 6 V variable amplitude 7 995 6 635 6 035 PP978 PicoSource PG912 pulse generator: 50 Ω N(m) < 40 ps positive and negative tunnel diode pulse heads, > 200 mV fixed amplitude 10 415 8 645 7 855 PP979 PicoSource PG914 pulse generator: dual-mode generator with both of the above outputs 12 825 10 645 9 675 * Prices are correct at the time of publication. Sales taxes not included. Please contact Pico Technology for the latest prices before ordering.

Errors and omissions excepted. Pico Technology, PicoSource and PicoScope are internationally registered trademarks of Pico Technology Ltd. PicoConnect and PicoVNA are registered trademarks of Pico Technology Ltd. Windows is a registered trademark of Microsoft Corporation in the United States and other countries. MM070.en-9. Copyright © 2015–2020 Pico Technology Ltd. All rights reserved. www.picotech.com UK global headquarters: Pico Technology James House Colmworth Business Park St. Neots Cambridgeshire PE19 8YP United Kingdom  +44 (0) 1480 396 395  sales@picotech.com @picotechnologyltd Pico Technology Pico Technology@LifeAtPico @picotech More RF products from Pico... PicoScope 9300 Series Sampling scopes and TDR to 25 GHz PicoScope 9400 Series Sampler extended real time scopes PicoVNA® Series Vector network analysis for the many PicoConnect® 900 Series

9 GHz passive probes

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