3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
1.
To increase speed as much as possible by freeing the instrument from having to
update the display
2.
To reduce emissions from the display, drive circuitry
3.
For security purposes
If you have turned off the display:
–
and you are in local operation, the display can be turned back on by pressing any
key or by sending :SYSTem:DEFaults MISC or :DISPlay:ENABle ON (neither
*RST nor :SYSTem:PRESet enable the display)
–
and you are in remote operation, the display can be turned back on by pressing
the Local or Esc keys, or by sending :SYSTem:DEFaults MISC or
:DISPlay:ENABle ON (neither *RST nor :SYSTem:PRESet enable the display)
–
and you are using either the :SYSTem:KLOCk command or GPIB local lockout,
then no front-panel key press will turn the display back on. You must turn it back
on remotely.
If the display is OFF, many SCPI commands related to User Views and Multiscreen
functionality do not work, and return the error messages “-221, Settings conflict;
Screen SCPI cannot be used when Display is disabled” or “221, Settings conflict;
View SCPI cannot be used while Display is disabled”. These commands include:
Name Command
Select User View
:DISPlay:VIEW:ADVanced:SELect
Rename User View
:DISPlay:VIEW:ADVanced:REName
Delete User View
:DISPlay:VIEW:ADVanced:DELete
Create User View
:DISPlay:VIEW:ADVanced:NAME
Select Screen
:INSTrument:SCReen:SELect
Delete Screen
:INSTrument:SCReen:DELete
Delete All But This Screen
:INSTrument:SCReen:DELete:ALL
Add Screen
:INSTrument:SCReen:CREate
Rename Screen
:INSTrument:SCReen:REName
Sequencer On/Off
:SYSTem:SEQuencer
Remote
Command
:DISPlay:ENABle OFF | ON | 0 | 1
:DISPlay:ENABle?
Example
:DISP:ENAB OFF
Couplings :DISP:ENAB OFF turns Backlight OFF and :DISP:ENAB ON turns Backlight ON, but changing
Backlight settings does not change the state of :DISP:ENAB
276 Spectrum Analyzer Mode User's &Programmer's Reference
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