Agilent Technologies Agilent 34980A, Руководство пользователя

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202 34980A User’s Guide
7
RF Multiplexer Switch Modules
34941A and 34942A SCPI Programming Examples
The programming examples below provide you with SCPI command
examples to use for actions specific to the RF MUX switch 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 channel number. For information on specific configurations,
refer to the simplified schematic on page 203 .
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.
Example: Closing channels
You can only close channels on the RF MUX
modules. You cannot open channels. When you close a channel, any
already- closed channels automatically open. With this “one- step”
operation, the relays switch in the proper order that avoids momentary
connection of the wrong input to the multiplexer output. The following
command closes channel 03 on Bank 1 of an RF MUX module installed
in slot 5.
ROUTe:CLOSe (@5103)
Example: Querying channels for open or close state
The following commands
returns the close or open state of channel 33 of a module installed in
slot 5.
ROUT:CLOSe? (@5033)
ROUT:OPEN? (@5033)
Example: Querying the system for module identify
The following command
returns the identify of the module installed in slot 7.
SYSTem:CTYPe? 7
Example: Reading the cycle count for a relay
On these modules, each bank
consists of two leaf relays and one tree relay (see the simplified
schematic on page 203 ). The module stores the cycle count for each of
the three relays on all four banks. The cycle count is the greater of the
three values on the specified bank (i.e., reflecting the cycle count for the
entire bank). Therefore, the count for Channels 101, 102, 103, and 104
will
always be equal. The following statement reads back the number of
completed cycles for the channels 101 and 202 on a module installed in
slot 6.
DIAGnostic:RELay:CYCLes? (@6101,6202)