NF DM2571, User Manual

Page: 79 / 369

ADVANCED MEASUREMENT
75
Relative Value Measurement
Applicable to
Background
Relative measurement stores a value, typically the data at the moment,
as the reference. The following measurement is shown as the delta
between the references. The reference value will be cleared upon exit.
REL, basically, is to subtract a certain value in the following
measurement. The value is fixed and remains its effect even user exits
and returns back to this function again.
One of the most seen purposes of REL is to eliminate impedance of
test lead from measurement. Before operating impedance
measurement, short circuit the test lead followed by pressing the
[REL] button. For other measurements, press the [REL] button after
putting test lead in a null circuit.
Alternatively, user can modify the value by pressing the [REL#]
button followed by using the knob or number keys to enter a
specified value. Press the [REL] button again to disable null
operation.
Activate
Relative
measurement
Press the REL key. The measurement
reading at the moment becomes the
reference value.
Relative
measurement
display appears Indicator Relative
Measurement
Relative
Reference Value
REL Delta Value
REL Indicates Relative value measurement
REL: +000.5711mV Shows the stored reference value
+000.2653 Shows the delta between the current
measurement data and the reference value