Agilent Technologies Switch/Measure manual Configuring a Module, 34980A

4Low Frequency Multiplexer Switch Modules

Example: Making current measurements The following command configures channel 43 for a 34921A modules in slot 7 for dc current measurements, triggers the internal DMM to scan the channel, and then sends the reading to the output buffer of the 34980A. The default settings for range (autorange) and resolution (1 PLC) are used for the measurement.

MEASure:CURRent:DC? (@7043)

Configuring a Module

Example: Configuring a module for 2-wire or 1-wire mode The following command configures a MUX module in slot 4 for 1- wire mode. Because you can configure only the 34923A and 34925A MUX modules (and the 34933A matrix module) for either 2- wire or 1- wire mode, an error is generated if you send this command to a slot that does not contain one of those three modules. If you are using terminal blocks with these modules, be sure to use the corresponding 2- wire or 1- wire terminal block.

SYSTem:MODule:WIRE:MODE WIRE1,4

NOTE	When using a command to configure the system, the new
	configuration does not take effect until you cycle power on the
	34980A.

Example: Querying the system for module Identify The following command

returns the identity of the module installed in slot 7.

SYSTem:CTYPe? 7

NOTE	For the 34923A and the 34925A MUX modules, the query response
	may include a suffix to indicate a 1-wire configuration. For example,
	the response for the 34923A will be either "34923A" (differential
	mode) or "34923A-1W" (single-ended mode).

Querying and Clearing Cycle Count, and Resetting Modules

Example: Querying the cycle count for a relay The following command

returns the cycle count on channel 7 and channel 16 for a MUX module

in slot 1.

DIAGnostic:RELay:CYCLes? (@1007,1016)

NOTE	The 34925A will return 0 for relay counts because the FET relays on
	that module are non-mechanical and have an undefined lifetime.

100 34980A User’s Guide