B&K Precision 5491B - Manual - Manual (Page 35)

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The RATE parameters are explained as follows:
Fast
FAST sets speed to 25 readings per second. Use FAST, if speed is of primary importance, however it is
at the expense of increased reading noise and fewer usable digits (resolution).
Medium
Medium sets speed to 10 readings per second. Use Medium to achieve a balance between noise
performance and speed.
Slow
Slow sets speed to 5 readings per second. SLOW provides better noise performance and resolution at
the expense of speed.
Note: The integration time can be set for any measurement function except frequency, period,
continuity (fixed at FAST rate) and diode test (fixed at Medium rate). For frequency and
period, this value is little excess a gate time.
4.2 Trigger Operations
The multimeter’s triggering system allows you to generate triggers either manually, automatically or
externally, and take multiple readings per trigger. The following paragraphs discuss front panel triggering,
and the reading hold feature.
4.2.1 Trigger procedure
Wait for Trigger
The control source holds up operation until the programmable event occurs and is detected. See
description below for trigger sources:
 Immediate
With this trigger source, event detection is immediately satisfied allowing operation to continue.
 External
Event detection is satisfied for both kinds of triggers as below:
1. A bus trigger (*TRG) command is received.
2. The front panel key is pressed (The multimeter must be taken out of remote
before it will respond to key).
Take steps below for trigger settings:
1. Press → to enter the menu on the menu level. “A: MATH MEU” will be displayed.
2. Use or key to move across to the TRIG MEU on the menu level. “B: TRIG MEU”
will be displayed.
3. Press to move down to the command level within the TRIG MEU.
Trig
Trig