User`s guide

Introduction to the 34980A 1
Agilent 34980A Mainframe User’s Guide 15
The figure below shows the external connections required to synchronize
the scan sequence between the 34980A and an external instrument. The
34980A must notify the external instrument when a relay is closed and
fully settled (including channel delay). The 34980A outputs a Channel
Closed pulse. In response, the external instrument must notify the
34980A when it has finished its measurement and is ready to advance to
the next channel in the scan list. For more information, see “Scanning
With External Instruments” on page 129.
1
5
6
9
5
1
9
6
ABus1 HI
ABus2 HI
ABus3 HI
ABus4 HI
ABus1 LO
ABus2 LO
ABus3 LO
ABus4 LO
Channel Closed
GND
Channel Advance
(In)
(Out)
Analog Bus Connector
Ext Trig Connector
VM Complete Out Ext Trig In
External
DMM
34980A Mainframe