3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
selecting Clear/Write while Clear/Write is already selected will nonetheless clear
the trace and begin rewriting it.
Besides the Trace Type, the "View/Blank" on page 1740 state must be set to Active
(Update: ON, Display: ON) for a trace to be updating and visible. Selecting any Trace
Type automatically makes the trace Active.
See also: "Trace Mode Backwards Compatibility Commands" on page 513
Remote
Command
For Swept SA Measurement (in SA Mode):
:TRACe[1]|2|…|6:TYPE WRITe | AVERage | MAXHold | MINHold
:TRACe[1]|2|…|6:TYPE?
For all other measurements:
:TRACe[1]|2|3:<meas>:TYPE WRITe | AVERage | MAXHold | MINHold
:TRACe[1]|2|3:<meas>:TYPE?
where <meas> is the identifier for the current measurement
Example
:TRAC:TYPE WRIT
:TRAC:TYPE?
Couplings Selecting a Trace Type (by pressing any of the Trace Type selections or sending :TRAC:TYPE) sets
the Trace to Active (Update: ON, Display: OFF), even if the same trace type was already selected
When Detector setting is “Auto” ([:SENSe]:<meas>:DETector:AUTO?), Detector
([:SENSe]:<meas>:DETector[:FUNCtion]?) switches aligning with the switch of this
parameter: “NORMal” with WRITe (Clear Write), “AVERage” with AVERage, “POSitive (peak)”
with MAXHold, and “NEGative (peak)” with MINHold
Preset Swept SA and Monitor Spectrum: WRITe
All other measurements: AVERage
Following Preset, all traces are cleared (all trace points set to mintracevalue)
State Saved The type of each trace is saved in instrument state
Annunciation The type for each trace is indicated in the Trace annunciator panel on the Measurement Bar
Trace Mode Backwards Compatibility Commands
In earlier instruments, the “Trace Modes” were: Clear/Write, Max Hold, Min Hold,
View and Blank. Averaging was global to all traces and was controlled under the
BW/Avg menu.
In X-Series, trace averaging can be done on a per-trace basis. The Trace Modes
(now called Trace Types) are Clear/Write, Trace Average, Max Hold and Min Hold.
View and Blank are set separately under "View/Blank" on page 1740.
While this provides more flexibility, it also gives rise to potential backwards
compatibility problems. To mitigate these, the old Trace Mode command has been
retained and a new Trace Type command has been added. The :TRACe:MODE
command is retained for backwards compatibility, and the :TRACe:TYPE,
:TRACe:UPDate and :TRACe:DISPlay commands introduced for ongoing use. The
Spectrum Analyzer Mode User's &Programmer's Reference 513
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