Radio Shack 22-168A - Relative Measurement and Communication

USING THE RELATIVE
MEASUREMENT FEATURE
70g
The relative measurement feature lets you mea-
sure values relative to a’ reference value that you
set. For example, you can set a reference voltage
and then measure the difference between the
actual voltage and the reference voltage. Follow
these steps to set a reference value.
1. Repeatedly press FUNCTION until REL ap-
pears at the top of the display.
2. Press UP or DOWN to set the reference value’s
polarity. (— appears for negative values.)
Press SET/RESET.
3. Press UP or DOWN to set the reference value's
first digit. Press SET/RESET.
Note: The first digit can be either 1 or nothing.
© does not appear on the display for the first
digit.
Repeat Step 3 for the other three digits. After you
enter the last digit, the meter begins making rela-
tive measurements. The main display shows the
actual measurement. The secondary display
shows the difference between the measured
value and the reference value.
USING
THE
COMMUNICATION
FEATURE
'f
you
repeatedly
press
FUNCTION,
COM
appears
as
one
of
the
options
on
your
meter's.
display.
This
mode
was
designed
to
interface
the
meter
with
a
computer.
However,
the
software
supplied
with
your
meter
is
able
to
automatically
interface
with
the
meter
without
using
this
mode. There
is
no
need
to
ever
select
the
COM
mode.
35