Skip to content Skip to navigation


You are here: Home » Content » S.R.S. DG535 Digital Delay/Pulse Generator


Recently Viewed

This feature requires Javascript to be enabled.

S.R.S. DG535 Digital Delay/Pulse Generator

Module by: Richard Hall, Brenton Cheeseman, Jim Young. E-mail the authors

Summary: A "Quick Start" manual for using the Stanford Research Systems DG535 Pulse Generator


This module is by no means a complete reference to the DG535 Digital Delay/Pulse Generator. It is simply a reference for getting the generator started quickly with the bare minimum of functions. For further reference, go to the full Operating Manual and Programming reference published by Stanford Research Systems or view the link to Stanford Research Systems' website in the links bar.

Getting Started

LCD Display

If you ever find that the display screen on the pulse generator is unreadable, you can adjust the brightness of the LCD using the grey LCD arrows (the +/- and EXC buttons) on the right of the front panel. This only works if the green arrows button in the middle of the front panel is lit. If not, press the lone button below it once to switch from NUM to the arrows.

Navigating the Menus


To select any variable from a display menu, push the button that originally opened that menu. (Ex. Push the TRIG button to open a display menu. Then use the underlining cursor to highlight the desired variable. Then push the TRIG button again to select that variable.)

There are two different methods to set any numerical value:

  1. Using the cursor arrows, move the cursor to underline the desired digit to be set. Then using the up and down arrows, the digit can be set from 0-9.
  2. If you push the lone button in the middle of the front panel until NUM is lit green, this will allow the user to manually type in the desired numerical value for a given variable using the number pad. Note that you can also use the E and +/- buttons on the right to input your value in scientific notation.

Setting Up the SRS Digital Delay/Pulse Generator

Establishing an external trigger using the SRS generator:

  1. Connect the To output of the generator to the ext. trigger of the oscilloscope. It is also helpful to split To and plug it in also to channel one of the oscilloscope to monitor it.
  2. This synchronizes the rate of the generator with the display rate of the oscilloscope, thus helping with display reading and other functions.

Setting up the SRS generator to produce pulses at a given rate (Hz):

  1. Push the TRIG button under the Menu section and select Int from the display menu.
  2. Now change the set rate value to the desired rate value by using the methods previously discussed.

Setting up the SRS generator to produce pulses at a given length (s):

  1. The AB signal pulse width will be the difference in the delay length set for each A and B.
  2. Push the DELAY button under the Menu section once, then set the initial delay value for signal A using the methods previously discussed.
  3. After setting A, push the DELAY button again, then set the initial delay value for signal B.


The generated pulse width must always be less than 1/To. Otherwise you will be trying to make a pulse which is longer than the period between pulses! If the pulse width exceeds 1/To, the RATE LED, under the TRIGGER section, will light up red.

Setting up the SRS generator to produce pulses at a given amplitude (V):

  1. Push the OUTPUT button under the Menu section and select AB from the display menu.
  2. Set your load to High Z.
  3. Select VAR from the display menu and then set the amplitude voltage using the methods previously discussed.
  4. After setting desired amplitude, set the offset to zero.


The amplitude of the pulse can be verified using the oscilloscope to check if the set amplitude is correct, as well as the set pulse delay length.

Content actions

Download module as:

PDF | EPUB (?)

What is an EPUB file?

EPUB is an electronic book format that can be read on a variety of mobile devices.

Downloading to a reading device

For detailed instructions on how to download this content's EPUB to your specific device, click the "(?)" link.

| More downloads ...

Add module to:

My Favorites (?)

'My Favorites' is a special kind of lens which you can use to bookmark modules and collections. 'My Favorites' can only be seen by you, and collections saved in 'My Favorites' can remember the last module you were on. You need an account to use 'My Favorites'.

| A lens I own (?)

Definition of a lens


A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

| External bookmarks