Timebase Dac - Keysight x-series User Reference Manual

6 System Functions
System
Key Path
Mode
Remote Command
Example
Notes
Initial S/W Revision

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.
Key Path
Mode
Remote Command
Example
Notes
Preset
State Saved
Initial S/W Revision
Calibrated
Sets the Timebase DAC to the value established during factory or field calibration. The value displayed on
the menu key is the calibrated value.
Key Path
Mode
Example
Readback Text
Initial S/W Revision
322
System, Alignments, Advanced
All
:CALibration:TDS
:CAL:TDS
See SCPI for Align Piece
A.13.0
System, Alignments
All
:CALibration:FREQuency:REFerence:MODE CALibrated|USER
:CALibration:FREQuency:REFerence:MODE?
:CAL:FREQ:REF:MODE CAL
If the value of the timebase is changed the alignment system automatically performs an alignment or
alerts that an alignment is due.
If the value of the timebase is changed the alignment system automatically performs an alignment or
alerts that an alignment is due.
This is unaffected by Preset but is set to CALibrated on a "Restore System Defaults->Align".
No
Prior to A.02.00
System, Alignments, Timebase DAC
All
:CAL:FREQ:REF:MODE CAL
[xxx] < where xxx is the calibrated value
Prior to A.02.00
EMI Receiver Mode Reference