User Manual

GPT-9000/9000A Series User Manual
108
SIGNAL I/O Overview
Overview
The SIGNAL I/O port can be used to remotely
start/stop tests and monitor the test status of
the instrument. The SIGNAL I/O port is also
used for the interlock function (page 102).
The SIGNAL I/O port uses a DB-9 pin female
connector.
Pin Assignment
6 97 8
1 2 3 4 5
Pin name
Pin
Description
INTERLOCK1
1
When INTERLOCK is ON, a test is only allowed
to start when both INTERLOCK pins are shorted.
INTERLOCK2
2
INPUT_COM
3
Common input line
INPUT_START
4
Start signal input
INPUT_STOP
5
Stop signal input
OUTPUT_TEST
6
Indicates that a test is in progress
OUTPUT_FAIL
7
Indicates that a test has failed
OUTPUT_PASS
8
Indicates that a test has passed
OUTPUT_COM
9
Common output line
Interlock
connection
PIN 2 INTERLOCK2
PIN 1 INTERLOCK1
Input Connection
PIN 5 INPUT_STOP
PIN 3 INPUT_COM
PIN 4 INPUT_START