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98 34980A User’s Guide
4 Low Frequency Multiplexer Switch Modules
SCPI Programming Examples for the MUX Modules
The programming examples below provide you with SCPI command
examples to use for actions specific to the MUX modules.
The slot and channel addressing scheme used in these examples follow
the form sccc where s is the mainframe slot number (1 through 8) and
ccc is the three-digit channel number. For information on specific MUX
channel configurations, refer to the simplified schematics contained in
each MUX section of this chapter.
For complete information on the SCPI commands used to program the
34980A, refer to the Agilent 34980A Programmer’s Reference contained
on the 34980A Product Reference CD. For example programs, also refer
to the 34980A Product Reference CD.
Opening and Closing Channels
Example: Closing and opening channels on the armature and reed MUX modules
This command closes the specified channels on a MUX module. If any
channel in a bank is defined to be part of the scan list, and a scan is
occurring, attempting to close another channel (including Analog Bus
channels) within the same bank will result in an error. Channel closures
in the other bank are allowed as long as no channels are part of the
scan list.
The following commands close and open channels 13 and 15 through 18
in slot 3.
ROUTe:CLOSe (@3013,3015:3018)
ROUTe:OPEN (@3013,3015:3018)
Example: Closing channels on the FET MUX module The FET MUX module
supports a 1:N type closure, meaning that you can have only one channel
per bank closed at a time. The following command closes then
automatically opens each channel from 1-19 (Bank 1) in succession,
leaving channel 20 closed. Then the command continues closing and
opening channels 21 to 39 (Bank 2), then leaving channel 40 closed.
At the end, only channels 20 and 40 will be closed, while all other
channels will have been closed and then opened. In this process,
a channel will open before the next channel in succession closes, making
this a “break-before-make” series.
ROUTe:CLOSe (@3001:3040)
The following command opens the closed channel on Bank 1 of a FET
MUX module in slot 3, and closes channel 15 on that bank.
ROUTe:CLOSe (@3015)