Fluke 190 Series II User Manual page 42

Fluke 190 Series II
Users Manual
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 Display the
METER
2 Measure a voltage to be used as
reference value.
3 Set
RELATIVE
F2
highlighted.) This stores the
reference value as reference for
subsequent measurements.
Observe the
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.
34
key labels.
METER
to . ( is
ON ON
ADJUST REFERENCE
Now the large reading is the actual input value minus the
stored reference value. The actual input value is displayed
below the large reading (ACTUAL: xxxx), see Figure 13.
Figure 13. 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.