Keysight DAQ970A - Scanning with External Instruments

You can manually control a scan by repeatedly pressing [Scan] from the front panel.
You can start a scan by sending a software command from the remote interface.
You can start a scan when an external TTL-compatible trigger pulse is received.
You can start a scan when an alarm condition is logged on the channel being monitored.
Scanning with external instruments
You can use the DAQ970A for signal routing or control applications. If you install a multiplexer plug-in
module, you can use the DAQ970A for scanning with an external instrument. You can connect an external
instrument (such as a DMM) to the multiplexer COM terminal.
To control scanning with an external instrument, two control lines are provided. When the DAQ970A and
the external instrument are properly configured, you can synchronize a scan sequence between the two.
Keysight DAQ970A User's Guide 61
3 Features and Functions