User`s guide

44 U2741A User’s Guide
2 Operation and Features
Triggering the U2741A
At power- up, the default trigger source is immediate. To
make a measurement, the following steps are to be followed:
• Configure the U2741A by selecting the function, range,
resolution, and so on.
• Specify the digital multimeter's trigger source. You can
select software bus trigger or an immediate internal
trigger (default trigger source).
• Ensure that the U2741A is in wait- for- trigger state to
accept a trigger from the specified source.
Immediate triggering
In the immediate trigger mode, the trigger signal is always
present. When you place the U2741A in the wait- for-trigger
state, the trigger is issued immediately. This is the default
trigger source.
SCPI command
The following command sets the trigger source to immediate:
TRIGger:SOURce IMMediate
Software bus triggering
The bus trigger mode is initiated by sending a bus trigger
command, after selecting BUS as the trigger source.
SCPI command
The following command sets the trigger source to bus:
TRIGger:SOURce BUS
The MEASure? and READ? command overwrites the BUS
trigger and triggers the digital multimeter and returns a
measurement.
User's Guide.book Page 44 Friday, August 8, 2008 9:11 AM