3 VMA Mode
3.1 Digital Demod Measurement
3.1.11.1 Trace Align
Accesses controls that enable you to configure the trace alignment.
Reference
Displays a menu for selecting the reference type that is used to generate the Search
Time trace from the Raw Main Time trace. The selection includes:
–
Auto – auto select the reference according to Burst Search and Sync Search
state
–
Burst Rise Edge – select the rise edge of the burst as the reference
–
Burst Fall Edge – select the fall edge of the burst as the reference
–
Sync Pattern – select the start position of the founded sync pattern as the
reference
–
Off – doesn’t align the trace (Search Time trace = Raw Main Time trace)
Details
Works with Offset and Interval to determine the trace alignment region. If the region
is out of the acquisition data range, the trace stops updating, and a trace indicator
“DATA?” (which means “Data is questionable relative to current setup.”) will be
displayed at the top right of the graph.
Remote
Command
:CALCulate:DDEMod:TRACe:SEARch:TIME:REFerence AUTO | BRISe | BFALl | SWORd |
OFF
:CALCulate:DDEMod:TRACe:SEARch:TIME:REFerence?
Example
:CALC:DDEM:TRAC:SEAR:TIME:REF AUTO
:CALC:DDEM:TRAC:SEAR:TIME:REF?
Notes The align Reference, Offset and Interval determine the trace alignment region, and if the region is out of
Vector Modulation Analyzer Mode User's &Programmer's Reference 404