Keithley S46, Instruction Manual

Page: 31 / 63

Document number: S46-901-01 Rev. F / March 2011 3-7
S46/S46T/S46L Microwave Switch System Instruction Manual Section 3: Operation
:CLOSe <clist>
Close channels
:CLOSe?
Query closed channels
Parameters <clist> = (@ chanlist)
Where
chanlist is the list of channels to be closed separated by commas.
Description Enter the list of channels to close in a <clist>. For example, if you want to close
channels 2 and 7, send
ROUT:CLOS (@2,7)
. Table 3-7 summarizes channel
assignments.
CAUTION
Do not close more than one RF path per multiport switch. Degradation of
RF performance will result and the switch may be damaged.
Query This query command is used to return a <clist> of presently closed channels. For
example, if channels 2 and 7 are closed and
ROUT:CLOS?
is sent, then the query
will return
(@2,7)
.
:COUNt?
Return closure count
Description This command (query only) is used to return 32 (28 for the S46L)
comma-separated values representing the closure count (the number of times the
channel has been closed). Unpopulated channels always have a count of zero.
To reset this count, see :RCOunt <clist> Reset closure count for channels .
:OPEN <clist>
Enter the list of channels to open.
:ALL
Opens all channels.
:CONFigure
Path to configuration commands.
:CPOLe <clist>
Define which relays are present in system.
:CPOLe?
Query which relays are present in system.
:SPARameterN <string>
Stores s-parameter string for channel
N
(
N
= 1 through 32 [28 for the
S46L]). Maximum 68 characters.
:SPARameterN?
Returns stored s-parameter string for channel
N
(
N
= 1 through 32 [28 for
the S46L]) with no delimiters.
Table 3-7
Relay channel assignments
Relay Channels
RELAY A 1 through 6
RELAY B 7 through 12
RELAY C 13 through 18
RELAY D 19 through 24
RELAY 1 to 8 25 through 32
RELAY 1 to 4 25 through 28
(S46L only)
Table 3-6
:ROUTe subsystem command set
Commands Description