Racal Instruments 3152A, Руководство пользователя

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3152A User Manual
Racal Instruments
©
2001 Using The Instrument 3-13
Use the following command to activate one of eight backplane
TTLTRG lines:
OUTPut: TTLTrg<n> { OFF | ON}
<n> designates the activated trigger line and 0 through 7 are
available. ON enables the selected trigger line. The trigger
source for this line can be selected with the TRIG:SOUR
command. The default TTLTrg<n> state setting is OFF.
The query:
OUTPut:TTLTrg<n>?
queries the TTLTRG<n> state and returns "<n>,0" (OFF) or
"<n>,1" (ON).
Assigning the
Validating Source
For TTLTRG
The TTLTRG signals, when enabled and placed on the
backplane, can be asserted with signals coming from a number
of sources. Use the following command to assign the signal
source for the active TTLTRG line:
OUTPut:TRIGger:SOURce {BIT | LCOMplete |
INTernal | EXTernal}
BIT Generates a trigger signal at any point in the
waveform. The trigger position within the
waveform can be programmed using the
OUTPUT:SYNC:POS:POIN command. This
command is used to set both the TRIGger point
and the SYNC point.
LCOMplete Generates a trigger signal in SEQuence mode
only once when the selected segment appears for
the first time.
INTernal Generates a trigger signal at intervals set by the
internal trigger generator .
EXTernal Generates a trigger signal every time a trigger is
applied to the front panel TRIG IN connector.
The query:
OUTPut:TRIGger:SOURce?
queries the validating signal source for the backplane
TTLTRG<n> lines and returns BIT, LCOM, INT or EXT.