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System Functions
System
Timebase DAC
Allows control of the internal 10 MHz reference oscillator timebase. This may be used to adjust for
minor frequency alignment between the signal and the internal frequency reference. This adjustment has
no effect if the instrument is operating with an External Frequency Reference.
If the value of the Timebase DAC changes (by switching to Calibrated from User with User set to a
different value, or in User with a new value entered) an alignment may be necessary. The alignment
system will take appropriate action; which will either invoke an alignment or cause an Alert.
Remote Command: :CALibration:MPADapter:GAIN
:CALibration:MPADapter:GAIN?
Example: :CAL: MPAD:GAIN
Notes: :CALibration:MPADapter:GAIN? returns 0 if successful
:CALibration:MPADapter:GAIN? returns 1 if failed
While System, Alignments, Advanced, Characterize Multiport Adapter
Preamp is performing the characterization, bit 0 in the Status Operation
register is set. Completion, or termination, will clear bit 0 in the Status
Operation register.
This command is sequential, it must be completed before further SCPI
commands are processed. Interrupting the alignment from remote is
accomplished by invoking Device Clear followed by the :ABORt command.
Successful completion will clear bit 8 in the Status Questionable Calibration
Extended Failure register.
A failure encountered during alignment will generate the Error Condition
message “MPAdapter Preamp Charact Failure” and set bit 8 in the Status
Questionable Calibration Extended Failure register.
Dependencies: This key does not appear unless a multiport adapter is plugged in to the USB.
Grayout error: –221.1400; Multiport Adapter Not Available
Status Bits/OPC dependencies: Bit8 may be set in the Status Questionable Calibration Extended Failure
register.
Initial S/W Revision: A.10.00
Key Path:
System, Alignments
Mode: All
Remote Command: :CALibration:FREQuency:REFerence:MODE CALibrated|USER
:CALibration:FREQuency:REFerence:MODE?
Example: :CAL:FREQ:REF:MODE CAL