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Using the Scope and Meter
Making Multimeter Measurements (for models 190-xx2)
1
39
Making Relative Meter Measurements
A relative measurement displays the present
measurement result relative to a defined reference value.
The following example shows how to perform a relative
voltage measurement. First obtain a reference value:
1
METER
Display the METER key labels.
2
Measure a voltage to be used as
reference value.
3
F2
Set RELATIVE to ON. (ON is
highlighted.) This stores the
reference value as reference for
subsequent measurements.
Observe the ADJUST REFERENCE
soft key (F3) that enables you to
adjust the reference value (see
step 5 below).
4
Measure the voltage to be
compared to the reference.
Now the large reading is the actual input value minus the
stored reference value. The bargraph indicates the actual
input value. The actual input value and the reference value
are displayed below the large reading (ACTUAL: xxxx
REFERENCE: xxx), see Figure 18.
Figure 18. Making a Relative Measurement
You can use this feature when, for example, you need to
monitor input activity (voltage, temperature) in relation to a
known good value.
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