User guide

Model 745 Digital Delay Generator.

2013February 14

1- GENERAL INFORMATION

The MOD745 device provides four high precision independent delay channels. Access to these four

outputs (T1-T4) is given by four BNC connectors on the front panel. The achieved delay resolution

is about 0.25ps, and trigger-to-channel jitter is less than 25ps (Annex B). T1-T4 can deliver up to

5V, 2ns rise time max (Annex A), into 50Ω. Amplitude and width are adjustable on each output

channel either programmed from the front panel or via Ethernet.

A T0 output pulse is also available. It gives a time reference for each generated delayed output.

This high accuracy and precision device is suitable for system/experiment in science or industry

that requires reliable timing solution.

The MOD745 also provides four optional delay channels to rear panel T5 to T8 with also a delay

resolution of 1.25ns, trigger-to-channel jitter less than 50ps with a common 2 to 5V tunable

amplitude.

The internal timebase reference is a TCXO with a stability of 0.5ppm. An optional OCXO with a

50ppb precision can replace the standard one.

The device offers three operating trigger modes, repetitive (internal or external source), single

shot (internal, external or asynchronous source) and a burst mode (internal, external or

asynchronous source).

A Web page (accessed via Ethernet link) provides a simple method to configure the settings for

each channel, amplitude, width, trigger source, trigger mode and to control operation. You can

save and recall settings.

Instrument Options

745-4C Standard device

745-8C Extension to 8 channels (4 optional channels with 1.25ns resolution)

C Clock output

G Gate input

O OCXO 50ppb

Package Contents

The box you receive should contain the following:

- MOD745 Digital Delay Generator

- CD containing the PDF user manual and Labview driver.

- Certificate of calibration

BNC product:

For more information about BNC product see our web site: http://www.berkeleynucleonics.com/.