Keysight 34921A - Page 14

Keysight 34921A-34925A Low Frequency Multiplexer Modules User’s Guide 13
Low Frequency Multiplexer Modules
Exampl
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e - Closing and opening Analog Bus relays: The following command
connects the Analog Buses to Bank 1 (via the Analog Bus relays on Bank 1) for a
module in slot 3.
ROUTe:CLOSe (@3911,3912,3913,3914)
ROUTe:OPEN (@3911,3912,3913,3914)
The Analog Bus relays (numbered s911, s912, s913, etc.) on the MUX modules
are ignored if they are included in a range of channels.
An error will be generated if an Analog Bus relay is specified as the
first or last channel in a range of channels. For example, the following command
closes all valid channels between channel 30 (slot 1) and channel 5 (slot 2). In
addition, this command closes Analog Bus relay 911 on the module in slot 1
(Bank 1). Note that although the specified range of channels includes the other
Analog Bus relays, they are ignored and are not closed by this command.
ROUTe:CLOSe (@1030:2005,1911)
Example - Querying channels for open or close state: The following
command returns a 1 (true) or 0 (false) state of channel 036 for a module in
slot 3.
ROUTe:CLOSe (@3036)
ROUTe:CLOSe? (@3036) !Returns a 1
ROUTe:OPEN? (@3036) !Returns a 0
Making Measurements
Example - Making voltage measurements: The following command
configures channels 9 and 10 in slot 4 for DC voltage measurements, triggers the
internal DMM to scan channels 9 and 10, and returns the reading.
The 1 V range is selected with 1 mV resolution.
MEASure:VOLTage:DC? 1,0.001, (@4009,4010)
Example - Making voltage measurements using INITiate and FETCh?:
The following program segment shows how to use the INITiate command with
the CONFigure and FETCh? commands. The ROUTe:SCAN command puts
channels 3 and 8 (of a module in slot 1) into the scan list (and redefines the scan
list). The INITiate command scans the specified channels, and then sends the
readings to memory. The FETCh? command transfers the readings from memory
to the user.
CONFigure:VOLTage:DC 10,0.003,(@1003,1008)
ROUTe:SCAN (@1003,1008)
INITiate
FETCh?
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)
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