Agilent Technologies Agilent 34980A, User Manual

Page: 339 / 349

Breadboard Module
13
34980A User’s Guide 327
Example:
If the Breadboard Module is in slot 7, the following command
closes relay K103 to Analog Bus 3 (channel 913):
ROUTe:CLOSe (@7913)
The
ROUTe:CLOSe?
command is used to query the status of a relay, with
opposite results to the
ROUTe:OPEN?
command. The syntax is:
ROUTe:CLOSe? (@<ch_list>)
Example: If the Breadboard Module is in slot 6, the following query
returns the status of relay K104 to Analog Bus 4 (channel 914). A 1 is
returned if the relay is closed; a 0 is returned if the relay is open:
ROUTe:CLOSe? (@6914)
The
ROUTe:CHANnel:LABel
command is used to assign a user- defined label
to any of the 32 channels accessible by the Breadboard Module, including
the Analog Bus channels. These labels may be up to 18 ASCII characters
in length, and are not required to be unique. The syntax is:
ROUTe:CHANnel:LABel <label>, (@<ch_list>)
Example: If the Breadboard Module is in slot 2, the following command
assigns the label “Test Point A” to Analog Bus channel 913:
ROUTe:CHANnel:LABel "Test Point A",(@2913)
Most SCPI commands can address more than one channel at a time,
including specifying a range of channels. Refer to the Agilent 34980A
Programmer’s Reference
for more complete information.
General Purpose Relay Functions
In addition to the four dual- purpose relay channels 911- 914, which may
be used as general purpose relay drive channels if relays K101- K104 are
not installed, the 34959A breadboard module provides 28 additional
general purpose relay drive lines. The channels for these relay drives are
numbered 101 through 128. All of the SCPI commands described in the
previous section,
“Analog Bus Relay Functions” on page 326, also apply to
these relay drives. Since relay selection is left to the user’s discretion, take
particular note of the maximum current limits specified in the Electrical
Specifications table on
page 321 when choosing and driving your relays.