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Calibration Subsystem - Keithley 7711 User Manual

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CALibration subsystem

Commands to perform output operations are listed in
NOTE
The following commands for the CALibration subsystem are specific to the Model 7711/7712
module. It is only available if a Model 7711/7712 is installed.
Table 5
CALibration subsystem commands
Command
2700/2701 Commands
CALibration
:PROTected
:CARD1
:INITiate
:SPARameters <string>
:SPARameters?
:CARD2
:SPARameters?
2750 Commands (only)
CALibration
:CARD1
:INITiate
:SPARameters <string>
:CARD
:SPARameters? <NRf>
:SPARameters <string>
If the card in this slot is not a valid RF card (Model 7711, etc.), then a -221, "Settings Conflict" error is returned. Any valid
ASCII information can be stored in the string space; it is not error checked in any way.
NOTE
S-parameter data can only be written to a card in slot 1. The S-parameters are treated like
card-cal constants, meaning that you must send a CAL:PROT:CARD1:INIT command before
sending the SPARameters, and they are only saved on the card after a CAL:PROT:CARD1:SAVE
command. The S-parameter can be read from any slot.
:SPARameters? <NRf>
S-parameter data can only be written to a card in slot 1. This is consistent with other Integra series type card calibrations that
are allowed in slot 1 only. Also, the Model 2750 can be queried using CAL:PROT:CARD1:SPAR
NOTE
Errors +518 and +519 are provided to flag corrupted S-parameter information or flag
S-parameter information that was not properly initialized.
Table
5. Details on these commands follow the table.
Description
Path to CARD1 commands.
Initiate command—required before sending s-parameters.
Enter up to 238 characters for storage of S-parameter information about
the card in slot 1.
Query the ASCII information for CARD1.
Path to CARD2 commands.
Query the ASCII information for CARD2.
Path to CARD commands.
Initiate command—required before sending s-parameters.
Enter up to 238 characters for storage of S-parameter information about
the card in slot 1.
Path to s-parameter queries.
Query the ASCII information for card in slot <NRf>.
Query S-parameter
Default
Empty
Empty
13

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