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1-34 Getting Started Model 2750 Multimeter/Switch System User’s Manual
Trigger and return readings — remote programming
There are several commands used to trigger and return readings. The proper commands
and sequence to use depend on trigger state (continuous or non-continuous) and what you
are trying to accomplish.
Presented here are three fundamental command sequences that can be used to “trigger and
return readings.” These three command sequences (exercises) will accommodate most
basic measurement scenarios. Simply use the command sequence (exercise) that satisfies
your needs:
• Exercise 4 — Trigger and return a single reading
• Exercise 5 — Trigger and return multiple readings
• Exercise 6 — Return a single reading (continuous triggering)
Details on the commands to trigger and return readings are provided in other sections of
this manual. For details, refer to the following sections:
Section 3 — See “Trigger and retrieve readings” in Table 3-8 .
Section 7 — For scanning, see “Trigger commands” in Table 7-1 .
Section 8 — Explains the triggering process.
Section 13 — Covers Signal Oriented Measurement Commands (i.e., FETCh?, READ?).
Section 15 — See Table 15-9 (Trigger command summary).
Appendix D — Shows how trigger and read commands control data flow within the
instrument.
NOTE Each exercise indicates the commands used to configure triggering. Once
triggering is configured, the commands to trigger and/or return readings can
be repeated as often as desired (unless noted otherwise).
Exercise 4 — Trigger and return a single reading
Exercise 5 — Trigger and return multiple readings
Trigger controlled measurements — The instrument is typically used in a non-continu-
ous trigger mode. In this mode, commands are used to trigger one or more readings. After
the specified number of readings are completed, the measurement process stops.
Exercise 4 in Figure 1-9 provides a command sequence to trigger and return one reading.
Exercise 5 in Figure 1-10 provides a command sequence to trigger and return multiple
readings.
Exercise 6 — Return a single reading (continuous triggering)
Readings can be returned while the instrument is in the continuous measurement (trigger)
mode. Each time a read command is sent, the latest reading is returned. Exercise 6 in
Figure 1-11 provides a command sequence to return a single reading while in the continu-
ous trigger state.
2750-900-01.book Page 34 Wednesday, August 3, 2011 7:56 AM