User`s guide

4 34980A User’s Guide
1 Introduction to the 34980A
Rear Panel Connector Pinouts
External Trigger/Alarms Connector (Male D-Sub)
Analog Bus Connector (Female D-Sub)
Ext Trig Input /
Chan Adv Input (Pin 6)
Gnd (Pin 9)
1
5
6
9
Chan Closed Output /
VM Comp Output (Pin 5)
Input
5 V
0 V
> 1 µs
Output
3.3 V
0 V
Approx. 2 µs
Alarm 4 Output (Pin 4)
Alarm 3 Output (Pin 3)
Alarm 2 Output (Pin 2)
Alarm 1 Output (Pin 1)
or
Gnd (Pin 9)
ANALOG
BUSSES
Internal DMM Current Input I (Pin 5)
ABus1 LO (Pin 4)
ABus2 LO (Pin 3)
ABus3 LO (Pin 2)
ABus4 LO (Pin 1)
5
1
9
6
ABus1 HI (Pin 9)
ABus2 HI (Pin 8)
ABus3 HI (Pin 7)
ABus4 HI (Pin 6)