6 System Functions
System
User
Allows setting the Timebase DAC to a value other than the value established during the factory or field
calibration. The value displayed on the menu key is the calibrated value.
Key Path
System, Alignments, Timebase DAC
Mode All
Example :CAL:FREQ:REF:MODE USER
Readback Text xxx < where xxx is the Timebase DAC setting
Initial S/W Revision Prior to A.02.00
Key Path
System, Alignments, Timebase DAC
Mode All
Remote Command
:CALibration:FREQuency:REFerence:FINE <integer>
:CALibration:FREQuency:REFerence:FINE?
Example :CAL:FREQ:REF:FINE 8191
Notes If the value of the timebase is changed the alignment system automatically performs an alignment or
alerts that an alignment is due.
Couplings Setting :CAL:FREQ:REF:FINE sets :CAL:FREQ:REF:MODE USER
Preset This is unaffected by Preset but is set to the factory setting on a “Restore System Defaults->Align”.
State Saved No
Min 0
Max 16383
Backwards
Compatibility SCPI
:CALibration:FREQuency:REFerence:COARse
ESA hardware contained two DAC controls for the Timebase. In X-Series the command
:CALibration:FREQuency:REFerence:FINE is the method for adjusting the timebase. The :COARse
command is provided as an alias to :FINE.
Initial S/W Revision Prior to A.02.00
Remote Command
:CALibration:FREQuency:REFerence:COARse <integer>
:CALibration:FREQuency:REFerence:COARse?
Example :CAL:FREQ:REF:COAR 8191
Notes This is an alias for CAL:FREQ:REF:FINE any change to COARse is reflected in FINE and vice-versa. See
CAL:FREQ:REF:FINE for description of functionality.
Couplings Setting :CAL:FREQ:REF:COAR sets :CAL:FREQ:REF:MODE USER
Initial S/W Revision Prior to A.02.00
EMI Receiver Mode Reference 323