ROUTe:MONitor[:CHANnel]:ENABle
Syntax
ROUTe:MONitor[:CHANnel]:ENABle <mode>, (@<ch_list>)
ROUTe:MONitor[:CHANnel]:ENABle? (@<ch_list>)
Description
This command disables or enables the Monitor mode on the specified channels without modifying the active scan list. Readings acquired during a Monitor are not stored in memory but they are displayed on the front panel; however, all readings from a scan in progress at the same time are stored in memory.
Used With:
34921A through 34925A Multiplexer Modules
34950A Digital I/O Module (digital input and counter channels only)
34952A Multifunction Module (digital input and totalizer channels only)
Parameters
|
Name |
Type |
Range of Values |
Default Value |
|
<mode> |
Boolean |
{OFF|0|ON|1} |
OFF |
|
<ch_list> |
Numeric |
One or more channels in the form (@sccc). |
This is a required parameter |
Remarks
Channels do not have to be part of an active scan list to be monitored; however, the channel must be configured for a measurement in order to be monitored (see CONFigure and SENSe commands). Once a channel is configured for a measurement, the monitor mode is automatically enabled on that channel.
The Monitor mode is automatically enabled on all channels that are part of the active scan list (see ROUTe:SCAN command). If you define the scan list after monitoring has already been enabled, any channels that are not part of the active scan list will be ignored during the monitor operation (no error is generated).
A scan always has priority over the Monitor function (see ROUTe:SCAN command).
Use the ROUTe:MONitor[:CHANnel] command to select which channel will be displayed on the front panel in the Monitor mode. Once the desired channels are configured, use the ROUTe:MONitor:STATe command to turn on the Monitor mode.
Any channel that can be "read" by the instrument can be monitored. This includes any combination of temperature, voltage, resistance, current, frequency, or period measurements on multiplexer channels. You can also monitor a digital input channel or the totalizer count on the digital modules.
Mx+B scaling and alarm limits are applied to the selected channel during a Monitor and all alarm data is stored in the alarm queue (which will be cleared if power fails).
For monitor operations using a multiplexer module, an error is generated if the internal DMM is disabled (see INSTrument:DMM[:STATe] command) or not installed in the mainframe. The internal DMM is not required for monitor operations on the digital modules.
For 4-wire resistance measurements, the instrument automatically pairs channel n in Bank 1 with channel n+20 in Bank 2 (34921A, 34923A, 34925A) or n+35 (34922A, 34924A) to provide the source and sense connections. Monitor operations are not allowed on paired channels in Bank 2 while in the 4-wire mode (no error is generated).
The count on a totalizer channel is not reset when it is being monitored (the Monitor ignores the totalizer reset mode).
If a channel that is currently being monitored is closed (see ROUTe:CLOSe command) or opened (see ROUTe:OPEN command), the Monitor operation will be disabled on that channel.
Return Format
The query command returns "0" (OFF) or "1" (ON) for each channel specified. Multiple responses are separated by commas.
Examples
The following program segment configures channel 3 in slot 1 for dc voltage measurements, enables monitoring on the channel, and turns on the Monitor mode.
CONF:VOLT:DC (@1003)
ROUT:MON:CHAN (@1003)
ROUT:MON:CHAN:ENAB ON,(@1003)
ROUT:MON:STAT ON
The following query returns the state of the Monitor mode on channel 3 in slot 1.
ROUT:MON:CHAN:ENAB?
Typical Response: 1