Specifications

* Follow the GPIB output subsystem command to operate relay and relay reversal. Pg. #.
(RELAY DC OUTPUT):
FIGURE 5.9 ISOLATION RELAY DC OUTPUT
TTL SHUTDOWN
The PDS 40-30AR comes with an optional TTL enable/disable function. This is
accomplished using a BNC connector on the rear of the power supply.
FIGURE 5.10 TTL INPUT CONNECTER
A ‘short’ signal to the TTL input will disable the power supply output. The display will
indicate the unit been shutdown and the unit will continuously beep. This signal must be
cleared and the power supply must be reset in order to allow operation.
An ‘open’ signal allows for normal operation of the power supply
NORMAL:
Pin A7 ----------------- (+) Output
Pin A6 ----------------- (-) Output
Pin 17 ------------------ (+) Sense
Pin 16 ------------------ (-) Sense
REVERSE:
Pin A7 ----------------- (-) Output
Pin A6 ----------------- (+) Output
Pin 17 ------------------ (-) Sense
Pin 16 ------------------ (+) Sense
PIN 17
PIN 16
PIN A7
PIN A6
TTL INPUT
5-30