:MEASure:TDR:LIST:ITEM:SOURce

Instrument mode:
TDR
Package License:
RND
MFG
SNT
Flex Apps:
FlexDCA
Results Panel List Commands

Command Syntax

:MEASure:TDR:LIST:ITEM{1:64}:SOURce{1|2} <source_waveform>

Where {1:64} identifies a measurement cell in the Results table. For example, ITEM4.

Where <source_waveform> can be one of the following:

  • CHANnel{1:8}{A|B|C|D}
  • DIFF{1:4}
  • TRACe{1:128}
  • FUNCtion{1:16}

Query Syntax

:MEASure:TDR:LIST:ITEM2:SOURce{1|2}?

Query Syntax

:MEASure:TDR:LIST:ITEM:SOURce{1|2}?

Query Response

<source_waveform>

Description

Changes the source waveform of an existing TDR Mode measurement in the Results table. The command's :ITEM{1:64}: SCPI node identifies the measurement in the table. The measurement's identifying item number starts at 1 at the top of table and increment down the table. If more that one measurement is displayed per row, the measurements are numbered starting at the tables top-left corner and is incremented row-column ending in the tables bottom right corner.

The :MEASure:TDR:LIST:SELect command is not related to this task.

For most measurements, a single input waveform is used and is selected by the command's :SOURce1 node. Some measurements, such as :MEASure:TDR:DELTatime have two input waveforms. In this case, send this command twice, the first time with :SOURce1 and the second time with :SOURce2.

The query form of this command is always available. Sending the command form requires a Manufacturing, Signal Integrity, or Research and Development package license with the Enhancements 2020 (F-ENH1) feature. Sending the command without this feature results in the message -300, Device-specific error; The feature Enhancements 2020 is unlicensed.

Follow this command with the SYSTem:AUToscale and *OPC? commands.

Requires FlexDCA revision A.06.55 and above.

Example Command Sequence

To change the source waveforms of an existing Delta Time measurement in the second row of the Results table. The delta time measurement is made on two different sets of source waveforms.

:MEASure:TDR:DELTatime:SOURce1 CHAN1A;
:MEASure:TDR:DELTatime:SOURce2 CHAN1B;
:MEASure:TDR:DELTatime; # delta time on table row 1
:MEASure:TDR:DELTatime?
:MEASure:TDR:RISetime:SOURce1 CHAN1A; 
:MEASure:TDR:RISetime; # delta time moves to table row 2

...

:MEASure:TDR:LIST:ITEM2:SOURce1 CHAN5A; # change sources in table
:MEASure:TDR:LIST:ITEM2:SOURce2 CHAN5B;
:SYSTem:AUToscale;*OPC?
:MEASure:TDR:DELTatime:SOURce1 CHAN5A; # match sources in table
:MEASure:TDR:DELTatime:SOURce2 CHAN5B;
:MEASure:TDR:DELTatime
:MEASure:TDR:DELTatime?