:NETWorks:TRACe:THReshold:RFALl:TOP
Command Syntax
:NETWorks:TRACeN:THReshold:RFALl:TOP <amplitude>
<amplitude> is a double.
Where N identifies a specific trace and must be selected from 1 to 128 {1:128}.
Query Syntax
:NETWorks:TRACe{1:128}:THReshold:RFALl:TOP?
Description
For the indicated S-parameter trace, sets or queries the Rise/Fall threshold's custom top-level setting. The top and base levels are used to locate a waveform's lower and upper threshold levels during measurements.
Specify the level in the units shown in the following table, depending on the waveform type.
| Content Window Graphs | Y-Axis Units |
|---|---|
| S-Parameters | |
| Freq-Mag | Decibels |
| Phase | Degrees |
| GrpDelay | Seconds |
Use :NETWorks:TRACe:THReshold:RFALl:BASE to set or query a custom top level.
Before this custom top level can be applied to measurements, use the :MEASure:TBASe:RFALl:METHod command to select custom top-base definitions. On the front panel, you can choose Measure > Thresholds... and in the Thresholds tab, Rise/Fall subtab of the Configure Measurements dialog box, set the signal's Top-Base Definition.