The Model 745T-20C Digital Delay Generator provides users with an amazing twenty independent channels of pulse delay and width. This multi-channel Digital Delay Generator provides delay resolution of 100 picoseconds (ps) with an optional 1 picosecond (ps) resolution. The jitter is less than 25 ps with internal or external triggers.
Overview
Quick Specs |
Applications |
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The Model 745T-20C delivers up to 6 V into 50 Ω, meeting all TTL applications. The levels are adjustable on a channel-by-channel basis giving you complete time and amplitude domain control. The fast outputs, with risetimes of 1 ns, are on the rear panel for an elegant look for complex experiments. The front panel controls are accessed by a touchscreen interface with several programming options (Ethernet, etc) for remote control.
All parameters (delay/amplitude/width/trigger) may also be controlled with an embedded GUI that opens in an HTML browser such as Internet Explorer, Firefox, or Chrome at 10 or 100 Mb/s rates.
The Model 745T-20C is uniquely suited to gate, delay, pulse and synchronize many experiments in the nanosecond and picosecond domain. The space saving, reduced calibration costs, and simple control of so many channels are ideal for users of multiple channels of timing.
The Model 745T-20C Digital Delay Generator offers users several options for triggering timing channels: External, Internal and Remote. Externally trigger on the positive slope. The internal rep rate generator may be started by front panel pushbutton or remotely via your software interface. Either trigger mode may be set in one-shot or repetitive.
The Model 745T-20C can be expanded to provide up to 60 channels, all with the same high performance. *Note: external triggering is not available for 40 / 60 channels.
Delays
| Number of Channels | 20 independent delay outputs |
| Range | 0 to 10 s |
| Resolution | 100 ps (standard)
1 ps (option 4) |
| RMS Jitter | 25 ps (T0 to any output) |
| Accuracy | < 250 ps + delay x 10-7 |
| Time Base | 0.05 ppm stability |
Trigger source
| Internal | 3 generators 0.1 Hz to 10 kHz in 1-2-5 sequence |
| External | Rate up to 50 kHz, 1 V/50 Ω Threshold, slope positive; 5 ns minimum pulse width |
| Command | 2 Single Shots |
Outputs T1 to T20
| Amplitude | Adjustable 3 V to 6 V into 50 Ω |
| Rise/Fall time | 5 ns/ 5 ns |
| Width | 100 ns to 300 ms |
| Polarity | Active Low / Active High |
| Connector | BNC |
| Clock Input (1) | 10 MHz to 100 MHz (customer choice fixed input) |
General
| Interface Control | Front panel, Ethernet / Internet (web page or SCPI) |
| Software | Free Drivers |
| Dimension Weight |
Rack 19" 2U 19"W x 3.5"H x 12"D [48.25mm x 8.9mm x 30mm] *with mounting ears |
| Power | Autovolt 90 to 220 Vac / 0.5 Amp |
| Shipping Dimensions | 24x19x12" |
| Shipping Weight | 25 lbs |
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