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The PSPL2600C Pulse Generators provide high amplitude positive or negative pulses with convenient front panel control. The output has fast edge rates, smooth transitions and minimal overshoot and 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 pulse amplitude from
- Rise Time ≤ 300 ps
- Adjustable duration from
- Single shot, or 1 Hz to 100 kHz repetition rate
Key features
- Front panel operation
- Internal, external or manual trigger modes
- Continuously variable repetition rate and duration settings
Applications
- University education and research
- UWB signal source
- Semiconductor characterization
- Laser driver
Typical performance

Positive pulse

Negative pulse
The following figures show typical positive and negative waveforms with the pattern generator Duration control set to minimum. The displays are set to 10 V/div and 1 ns/div.

Minimum duration positive pulse

Minimum duration negative pulse
The following figures show typical leading edge and trailing edge waveforms. The displays are set to 10 V/div and 200 ps/div.

Leading edge waveform

Trailing edge waveform
The following figures show typical pulses with various pulse waveform durations. The displays are set to 10 V/div and 20 ns/div.

20 ns duration pulse waveform

50 ns duration pulse waveform

100 ns duration pulse waveform
The following figures show typical histogram measurements of the timing jitter. The displays are set to 10 V/div and 50 ps/div.

Adjustable delay trigger, trigger measures 12.8 psrms

Fixed 115 ns delay trigger, jitter measures 6.8 psrms
The following figure shows an adjustable duration waveform from 1 ns to 100 ns. The display is set to 10 V/div and 500 ps/div.

Adjustable duration waveform
Ordering information
Models
- PSPL2600C
- PULSE GENERATOR, 400 ps, 45 V, 1-100 ns
Options
- PSPL2600C TURBO
- Supports 50 V, 250 ps rise time pulses
Specifications
All specifications apply to all models unless noted otherwise.
Model overview
The performance parameters listed here are typical values. Parameters are guaranteed at 23 °C (±3 °C) when maximum and/or minimum limits are given.
| Parameter | PSPL2600C | PSPL2600C TURBO |
| Amplitude range into 50 Ω 1 | 14 mV to 45 V, ≥40 V min. | 16 mV to 50 V, ≥45 V min. |
| Transition time, leading edge (10 – 90%) 1 | 400 ps, ≤500 ps max. | 250 ps, ≤350 ps max. |
| Transition time, trailing edge (10 – 90%) 1 | 1 ns, ≤1.8 ns max. | 800 ps, ≤1 ns max. |
| Topline overshoot | ≤2% | |
| Attenuation | 0 to 70 dB, 1 dB steps | |
| Polarity | Positive or negative | |
| Baseline | 0 V | |
| Reflection coefficient | -30% during pulse, +50% after pulse. Improves with increasing attenuation. | |
| Source impedance (nominal) | 50 Ω | |
| Duration (FWHM) | ||
| Baseline precursor | ||
| Topline perturbations | ||
| Spurious pulse at 115 ns | +6% with duration ≤ 20 ns, +30% for pulse duration = 100 ns | |
1 Parameters listed are for positive polarity pulse. Negative polarity pulse amplitude is typically 1 dB less and the rise times and fall times are typically 75 ps slower.
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 |
| Adjustable delay | 0 to 100 ns |
| Adjustable delay jitter, RMS | ≤35 ps |
| Fixed trigger delay | 115 ns |
| Fixed trigger delay jitter, RMS | ≤12 ps |
| Repetition rate | 1 Hz to 100 kHz continuously adjustable |
| External trigger input level | TTL pulse required, level > 1.5 V, + slope, > 10 ns duration |
| External trigger impedance | 430 Ω |
| Trigger output into 50 Ω | 0.8 V |
| Trigger in/out delay | 200 ns |
General specifications
| Parameter | Description |
| Accessories included | Power cord, front handles, rack mount kit, instruction manual |
| Front panel controls | Power, repetition rate range, rep. rate vernier, delay, duration, polarity, and attenuation |
| Power supply (mains) | 100, 115, or 230 VAC, ±10% switch selectable, 50 or 60 Hz |
| Power consumption | 42 VA (60 Hz), 65 VA (50 Hz) |
| Operating environment | |
| 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 | 17 x 13 x 3.25 in. (43.2 x 33.0 x 8.3 cm) |
| Weight | 15 lbs (6.8 kg) |
| Connectors | SMA output, BNC for trigger in and trigger output |
| Warranty | One year |