Keithley 7711, Руководство пользователя

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13
CALibration subsystem
Commands to perform output operations are listed in Table 5 . Details on these commands follow the table.
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.
: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> Query S-parameter
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
518 and +519 are provided to flag corrupted S-parameter information or flag
S-parameter information that was not properly initialized.
Table 5
CALibration subsystem commands
Command Description Default
2700/2701 Commands
CALibration
:PROTected
:CARD1 Path to CARD1 commands.
:INITiate Initiate command—required before sending s-parameters.
:SPARameters <string> Enter up to 238 characters for storage of S-parameter information about
the card in slot 1.
Empty
:SPARameters? Query the ASCII information for CARD1.
:CARD2 Path to CARD2 commands.
:SPARameters? Query the ASCII information for CARD2.
2750 Commands (only)
CALibration
:CARD1 Path to CARD commands.
:INITiate Initiate command—required before sending s-parameters.
:SPARameters <string> Enter up to 238 characters for storage of S-parameter information about
the card in slot 1.
Empty
:CARD Path to s-parameter queries.
:SPARameters? <NRf> Query the ASCII information for card in slot <NRf>.