Assigning The Validating Source For Ttltrg; Enabling The Main Output - Racal Instruments 3151 User Manual

3151 And 3151A User Manual
Assigning the
Validating Source
For TTLTRG
Enabling the Main
Output
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
LCOMplete
INTernal Generates a trigger signal at intervals set by the
EXTernal Generates a trigger signal every time a trigger is
The query:
OUTPut:TRIGger:SOURce?
queries the validating signal source for the backplane TTLTRG<n>
lines and returns BIT, LCOM, INT or EXT.
For safety reasons, the main output default setting is OFF. Disable or
enable the main output using the following command:
OUTPut {OFF | ON}
When the main output state is programmed to ON, the output
connector is connected to the output amplifier through a 50Ω resistor.
In the OFF position, the output connector is disconnected from the
output amplifier by means of a mechanical relay. Ensure that voltage
is not applied to the main output connector when the Model
3151/3151A output state is programmed to ON.
The query:
OUTPut?
queries the state of the main output and returns "0" (OFF) or "1"
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.
Generates a trigger signal in SEQuence
mode only once when the selected segment
appears for the first time.
internal trigger generator .
applied to the front panel TRIG IN connector.
Using The Instrument 3-13