Keithley 6521, Инструкция по эксплуатации, Страница: 34 / 65

Operation
3-6
3.5.2 Closing and opening channels
Closing channels
Use the CLOSe command to close any of the ten channels on
the scanner card. For example, to close channel 3, you would
send the following command over the bus:
:ROUTe:CLOSe (@3)
Similarly, the following command would be used to close
channel 7:
:ROUTe:CLOSe (@7)
Note that closing a specific channel will automatically open
any other closed channel.
Table 3-3
Summary of IEEE-488 bus scanner commands
Command Description
:ROUTe
:CLOSe <channel list>
:STATe?
:CLOSe? <channel list>
:OPEN <channel list>
:OPEN:ALL
:OPEN? <channel list>
:SCAN
[:INTernal] <scan list>
[:INTernal]?
:EXTernal <n channels>
:EXTernal?
:LSELect INTERNAL | EXTernal | NONE
:LSELect?
:STIMe <n>
:STIMe?
:SMEThod VOLTage | CURRent
:SMEThod?
:VSLimit <b>
:VSLimit?
Route subsystem.
Close channels.
Query channel state.
Query closed channels.
Open channels.
Open all channels.
Query open channels.
Scanning commands.
Program internal scan list.
Query internal scan list.
Program external scan number of channels (1 <=n <=400).
Query external scan number of channels.
Select scan list.
Query selected scan list.
Program settling time (0.000 <= n <= 999.999 sec).
Query settling time.
Select scan method (voltage=break before make).
Query scan method.
Set voltage source limit (1 = 200V)
Query voltage source limit.
NOTES:
1. When querying specific channel states, 1 = closed, 0 = open
2. Internal scan list = 2 to 10 channels.
3. Internal channel list = 1 to 10.
4. Selecting internal scan (LSEL INT) requires that a Model 6521 or 6522 be installed.
5. Sending the STIMe, SMEThod, or VSLimit commands without a 6521/22 installed will generate a “Hardware Missing” error.
Opening channels
Send the OPEN command to open any close channels. For
example, to open channel 3, send the following command.
:ROUTe:OPEN (@3)
Alternatively, you can send the following command to open
any closed channel:
:ROUTe:OPEN:ALL
NOTE
Turning off Model 6517 power will also
open any closed channel.