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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[:STARt|SEQuence[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[1|2]: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 Understandin
g
the HP E1429 Di
g
itizer Chapter 3