Section 2: General operation
Model 2657A High Power System SourceMeter® Instrument Reference Manual
2-28
2657A-901-01 Rev. B/December 2012
Triggering in local mode
It is not necessary to change any trigger settings to use the basic source and measurement
procedures covered in this section.
Press the
MENU
key, and then select
SETUP > RECALL > INTERNAL > FACTORY
to reset the
factory default conditions.
The following figure shows the general sequence for measurement triggering. The basic sequence is
as follows:
•
When the output is turned on, the programmed source value is immediately applied to the device
under test (DUT).
•
(Front panel operation only) If the immediate trigger source is selected, a measurement will be
triggered immediately. However, if the manual trigger source is selected, the front panel TRIG key
must be pressed.
•
The instrument waits for the programmed delay period (if any).
•
The instrument takes one measurement.
•
If the number of measurements is less than the programmed trigger count, it cycles back to take
another measurement (the measurement cycle will be repeated indefinitely if the infinite trigger
count is selected).
•
For multiple measurements, the instrument waits for the programmed trigger interval (if any)
before taking the next measurement.
Figure 7: Local triggering
Configuring trigger attributes in local mode
From the front panel, press the
CONFIG
key, and then select
TRIG
. The following menu items are
shown:
TRIGGER-IN:
Use these options to select the trigger-in source:
•
IMMEDIATE
: Triggering occurs immediately and the instrument starts to take measurements
when it is ready (for example, after the source output is turned on).
•
MANUAL
: The front panel TRIG key must be pressed to trigger the instrument to take readings.
Quick Tip
Source
Delay
Measure
Output
On
Interval
# Measures
< Count
Complete
Trigger In:
Front Panel (Immediate or TRIG)
Summary of Contents for 2657A
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