Agilent Technologies 34901A User Manual page 67

Chapter 3 System Overview
Measurement Input
Scanning With External Instruments
If your application doesn't require the built-in measurement capabilities
of the 34970A, you can order it without the internal DMM . In this
configuration, you can use the 34970A for signal routing or control
applications. If you install a multiplexer plug-in module, you can use the
34970A for scanning with an external instrument. You can connect an
external instrument (such as a DMM ) to the multiplexer COM terminal.
Input
Channels
To control scanning with an external instrument, two control lines are
provided. When the 34970A and the external instrument are properly
configured, you can synchronize a scan sequence between the two.
Channel Closed OUT
34970A
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H
L
H
L
H
Common Terminals
L
GND
Ext Trig IN
VM Complete OUT
External DMM
(COM)
H
L
External DMM
Ext Trig IN