Trigger

Synchronization

Signals

The trigger and reference clock signals can be "routed" to the following locations:

"Ext 1" BNC port ECLTRG trigger line

This allows the digitizer to synchronize other digitizers or events. The commands used to output the trigger and reference signals are:

OUTPut:ECLTrg<n >:FEED <source >

<source > = "TRIGger[:STARtSEQuence[1]]"

Outputs a trigger signal to the ECLT<n > trigger line each time a convert pulse is sent to the A/D converter.

<source > = "SENSe[12]:ROSCillator"

The significant edge of an ECL signal is the rising edge. Therefore, the ECLTrg <n > trigger line goes high with the falling edge of an external reference signal, and goes high with the rising edge of reference sources ECLTrg<n > and CLK10.

<source > = "EXTernal[1]"

Outputs the same signal currently specified by the OUTPut:EXTernal[1]:FEED command; however, the polarity is inverted.

126 Understanding the HP E1429 Digitizer

Chapter 3

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HP E1429A manual Trigger Synchronization Signals