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906 Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide

31 :TRIGger Commands

:TRIGger[:EDGE]:SOURce

(see page 1138)

Command Syntax

:TRIGger[:EDGE]:SOURce <source>

<source> ::= {CHANnel<n> | EXTernal | LINE | WGEN} for the DSO models

<source> ::= {CHANnel<n> | DIGital<d> | EXTernal | LINE | WGEN}

for the MSO models

<n> ::= 1 to (# analog channels) in NR1 format

<d> ::= 0 to (# digital channels - 1) in NR1 format

The :TRIGger[:EDGE]:SOURce command selects the input that produces the

trigger.

• EXTernal — triggers on the rear panel EXT TRIG IN signal.

• LINE — triggers at the 50% level of the rising or falling edge of the AC

power source signal.

• WGEN — triggers at the 50% level of the rising edge of the waveform

generator output signal. This option is not available when the DC,

NOISe, or CARDiac waveforms are selected.

Query Syntax

:TRIGger[:EDGE]:SOURce?

The :TRIGger[:EDGE]:SOURce? query returns the current source. If all

channels are off, the query returns "NONE."

Return Format

<source> ::= {CHAN<n> | EXT | LINE | WGEN | NONE} for the DSO models

<source> ::= {CHAN<n> | DIG<d> | EXTernal | LINE | WGEN | NONE}

for the MSO models

See Also • "Introduction to :TRIGger Commands" on page 877

• ":TRIGger:MODE" on page 886

Example Code

' TRIGGER_EDGE_SOURCE - Selects the channel that actually produces th

' edge trigger. Any channel can be selected.

myScope.WriteString ":TRIGger:EDGE:SOURce CHANnel1"

See complete example programs at: Chapter 40, “Programming Examples,”

starting on page 1147

Agilent Technologies InfiniiVision 3000 X-Series Programmer's Guide

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