1257 User Manual
EADS North America Defense
Advanced SCPI Operations 7-11
Test and Services, Inc.
©
2001
B)
Arming the 1257 with an INIT:IMMEDIATE command
C)
Sending a single trigger on the selected trigger source
This command may be used to execute the next step of a scan list.
Output Trigger Signals
from the 1257
The 1257 may be programmed to generate an output trigger pulse
each time a relay operation has been completed. The output
trigger pulse may be placed on the external trigger output found on
the rear panel of the 1257. Refer to
Figure 7-1: Using External
Trigger In and External Trigger Out
for connector location and
signal information. This trigger pulse may be used to inform other
instruments that the relay(s) have settled, and a new measurement
may take place.
Selecting an Output
Trigger Destination
The OUTPUT:TRIGGER command is used to enable or disable
the external trigger line. The syntax for this command is:
:OUTput
:TRIGger
[:STATe] { ON | 1 | OFF | 0 }
Once the trigger output is enabled, it may be disabled by:
A)
Deselecting the line, using the “OFF” parameter.
B)
Sending the *RST command.
For example, the following commands may be sent.
To enable the external trigger output:
OUTPUT:TRIGGER ON
To disable the external trigger output:
OUTP:TRIG 0
The present destination for the trigger output pulse may be read by
sending each of the following queries:
OUTPUT:TRIG?
If the trigger output is disabled, the reply to this query will be a “
0
".
If an output trigger is enabled, the reply will be “
1
".
A delay may also be used to prevent the trigger form getting to the
UUT until a certain time has passed.
OUTP:DELay <output trigger delay time>
