Chapter 4 Features and Functions

Single-Channel Monitoring

In the Alarm Scan configuration (see “Scanning on Alarm” on page 84), the instrument sweeps the scan list once each time a reading crosses an alarm limit on a channel. In this configuration, you may use the Monitor function to continuously take readings on a selected channel and wait for an alarm on that channel. The monitored channel can be part of the scan list but you can also use a channel on the multifunction module (which does not have to be part of the scan list and you do not have to use the Monitor function).

Front-Panel Operation: To start a Monitor, press . Turn the knob to advance to the desired channel. The instrument begins monitoring after you pause for a few seconds on a configured channel.

To stop a Monitor, press again. Note that while the instrument in in the remote mode, you can still turn on the Monitor function and select the desired channel.

Remote Interface Operation: The following program segment selects the channel to be monitored (specify only one channel) and enables the Monitor function.

ROUT:MON (@101)

ROUT:MON:STATE ON

To read the monitor data from the selected channel, send the following command. This command returns the reading only; the units, time, channel, and alarm information are not returned (the FORMat:READing commands do not apply to monitor readings).

ROUT:MON:DATA?

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HP 34970A manual Routmondata?