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The PSPL10300B Pulse Generator provides high amplitude positive or negative pulses with convenient front panel or computer control. It has an adjustable baseline to provide up to ±5 V DC offset, or allows for external control of the baseline up to ±50 V. The output has fast edge rates, smooth transitions and minimal overshoot & ringing. Adjustable output levels are obtained using internal step attenuators, ensuring consistent signal shape at all settings. The outputs are designed for a 50 Ω impedance, but can safely drive any load from a short circuit to an open.
Key performance specifications
- Positive or negative polarity pulses
- Adjustable positive pulse amplitude from
- Rise time 300 ps
- Adjustable duration from
- Single shot, or 1 Hz to 100 kHz repetition rate
Key features
- Keypad interface
- Programmable IEEE-488
- Internal, external, manual or GPIB trigger modes
- Gated output
- Port for external baseline offset up to ±50 V
Applications
- University education and research
- UWB signal source
- Semiconductor characterization
- Laser driver
Typical performance
15 V/div and 500 ps/div. Adjustable amplitude from -45 V to +50 V in 1 dB steps. Also adjustable baseline offset from -5 V to +5 V.
8 V/div and 1 ns/div. Adjustable duration from
8 V/div and 200 ps/div. Leading edge 250 ps rise time.
20 V/div and 20 ns/div. 20 ns and 100 ns pulses.
Ordering information
Models
- PSPL10300B
- 300 ps PULSE GENERATOR, GPIB
Specifications
The performance parameters listed here are typical values, parameters are guaranteed only when maximum and/or minimum limits are given.
| Parameter | Value |
| Polarity | Positive or negative |
| Amplitude into 50 Ω (See Notes) | 4.5 mV to 50 V positive, -4 mV to -45 V negative, adjustable in 1 dB steps |
| Amplitude accuracy, into 50 Ω (full output amplitude) | ±2 V positive, ±3 V negative |
| Baseline | Adjustable from -5 V to +5 V in 1.25 mV steps, external input provided for user-supplied offset of ±50 V |
| Transition time, leading edge (10 – 90%) | 300 ps, 325 ps max. |
| Transition time, trailing edge (10 – 90%) | 750 ps, 1 ns max. |
| Reflection coefficient | 30% during pulse, +50% after pulse, improves with increasing attenuation |
| Source impedance (nominal) | 50 Ω |
| Duration (FWHM) (See Notes) | |
| Baseline precursor | |
| Topline overshoot | 2% |
| Topline perturbations | ±1% for t |
| Topline flatness | ±0.5% for t > 3 ns (±2% for negative pulse) |
| Spurious pulse at 120 ns | +6% with pulse duration ≤ 20 ns, +30% for pulse duration = 100 ns |
Notes:
The duration and delay values displayed on the front panel LCD and programmed over GPIB are only to be considered “nominal” values and not absolute values. The duration and delay parameters exhibit some thermal drift, rep rate dependency and interaction. There will be some loss in amplitude at minimum pulse durations. The amplitude tolerance of ±2 V holds only for > 10 ns durations. The amplitude has a minor rep rate dependency. Always use an oscilloscope as an independent check of these pulse parameters. The instrument is adjusted and calibrated at the factory in an ambient temperature of 23 °C (±3 °C) at a rep. rate of 100 kHz. The instrument will operate over a temperature range of 0 to 50 °C but will not meet all specifications over this range.
Trigger and timing
The performance parameters listed in this table are typical values; parameters are guaranteed only when maximum and/or minimum limits are given.
| Parameter | Value |
| Trigger in/out delay | 185 ns |
| Repetition rate | 1 Hz to 100 kHz |
| Period | 10 µs to 1 s, 0.1 µs steps |
| Trigger mode | Internal, external, manual, or GPIB |
| External trigger input level | -2 to +2 V, 1 mV steps, positive or negative slope |
| Maximum external trigger input | ±5 V |
| External trigger impedance | 50 Ω |
| Trigger output into 50 Ω | 1 V, 1 µs |
| Delay (See Notes above) | 0 to 100 ns, 25 ps steps |
| Delay jitter, RMS | |
| External gate input | TTL, > 2 V on, |
| External gate impedance | 50 Ω |
General specifications
| Parameter | Description |
| Accessories included | Power cord, BNC cable, rack mount kit, instruction manual |
| Front panel controls | Power, menu, data entry, disable/enable, local, and manual trigger |
| Power supply (mains) | 100, 115, or 230 VAC, ±10% switch selectable, 50 or 60 Hz |
| Power consumption | 48 VA (60 Hz), 65 VA (50 Hz) |
| Operating environment (See Notes above) | |
| Temperature | 40 °C (104 °F); low limit of 0 °C (32 °F) |
| Humidity | 80% for temperatures up to 31 °C (88 °F), decreasing linearly to 50% at 40 °C (104 °F) |
| Elevation | 2000 m (6562 ft.) |
| Dimensions | 19.0 x 15.2 x 5.5 in. (48.3 x 38.6 x 14.0 cm) |
| Weight | 21 lbs (9.5 kg) |
| Connectors | SMA output, BNC trig in, gate in, trig out, BNC on rear panel for baseline offset d/a output and bias tee input, GPIB on rear panel |
| GPIB standard | IEEE-488.1-1987 |
| GPIB interface functions | SH1, AH1, T6, L4, SR1, RL1, PPO, DC1, DT1, CO and E2 |
| Set up | Save/recall in 10 memories with battery backup |
| Warranty | One year |