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Radio Shack 22-812 - Making Measurements; Measuring DC Voltage

Radio Shack 22-812
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Making Measurements
18
repeatedly press MAX/MIN to read the currently
selected maximum value (if
CWn
CWnCWn
CWn appears) or
the currently selected minimum value (if
C_d
C_dC_d
C_d
appears).
5. To pause monitoring, press
HOLD.
Hold
appears. To continue monitoring, press
HOLD
again.
Hold
disappears.
±
To exit the monitor mode, press
MAX/MIN for more
than 2 seconds.
CWn
CWnCWn
CWn or C_d
C_dC_d
C_d disappears.
/#-+0)"/'#574'/'065
/'#574+0)"&%"81.6#)'
1. Set the function selector to
°
°°
°
C/
°
°°
°
F /
V.
2. If necessary, press SELECT to select DC
voltage measurement.
3. If the meter is set to automatic range control,
the meter automatically moves to the range
that gives the best reading.
4. To set manual range control, press
RANGE. disappears. Repeatedly press
RANGE to change the range.
5. Touch the probes to the circuit you want to test.
In the 400 V and 400mV ranges
, the decimal
point appears in the same position (one place
to the left). To distinguish between the two
ranges,
mV
appears in the 400mV range and
V
appears in the 400 V range.
When the meter is set to the 400mV range
, Eý<
Eý<Eý<
Eý<
continues to appear even if you remove an
over-range input signal. This is not a
malfunction. To clear the display, simply touch
the test leads together or connect them to a
circuit.
Eý<
Eý<Eý<
Eý< disappears.
±
"016'"
±
"
When the meter is set to its
voltage or current function
and the input is out of the
setting’s range,
appears
on the display and
CWn
CWnCWn
CWn
or
C_d
C_dC_d
C_d
flashes on the left side
of the display.
ý
R
"9#40+0)
ý
R
"
Never clamp a test lead
to a hot wire (usually red,
black, or blue in AC
wiring circuits). If one
lead is clamped to a hot
wire and you touch the
meter’s other probe. you
could receive an electric
shock.
The maximum input limit
for DC voltage
measurement is 1000 V
DC. To avoid electrical
shock and damage to
the meter, never try to
measure a DC voltage
above 1000 volts.
AUTO
22-812.fm Page 18 Monday, April 8, 2002 1:32 PM

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