External Trigger - Keysight 34450A Guia Del Usuario

– The TRIGger:SOURce BUS command selects the bus trigger source.
– The MEASure? command overwrites the BUS trigger and triggers the DMM
– The READ? command does not overwrite the BUS trigger, and if selected,
– The INITiate command only initiates the measurement and needs a trigger
Refer to the Keysight 34450A Programmer's Reference Helpfile for the complete
description and syntax for these commands.

External Trigger

External triggering takes one reading (or the specified number of readings in data
logger) each time the multimeter receives a pulse on the rear-panel external
trigger connector.
The multimeter uses the rising edge (POS) of the external trigger signal to trigger
a reading. Diagram below shows the external trigger connector:
Figure 2-5
The trigger annunciator turns on when the multimeter is waiting for an external
trigger.
The rear panel trigger out connector provides a pulse after the completion of each
measurement. Trigger out and external trigger implement a standard hardware
handshake sequence between measurement and switching devices.
Keysight 34450A User's Guide
and returns a measurement.
generates an error. It will only trigger the instrument and return a
measurement when the IMMEdiate trigger is selected.
(BUS or EXTernal or IMMEdiate) to make the actual measurement.
Trigger in connector
TRIG
TRIG
Tx
Rx
IN
OUT
–
+
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