Analog Multimeter - Ford Truck Enthusiasts

Thank you for purchasing your Analog Multimeter
from RadioShack. Please read this user’s guide before
installing, setting up and using your new meter.
Analog Multimeter
Mirror
Resistance
Zero
Adjust
Zero Adjustment
Control
If the needle does
not align with the
starting point at the
left side of the scale,
use a screwdriver to
align the needle.
Range
Switch
Test Leads
Remove the
rubber caps;
plug the red test
lead into the +
jack (red) and the
black test lead
into the – jack
(black).
Replacing Batteries and Fuse
Your meter requires two AAA batteries
(not included) for power.
1. Remove the screw on the back cover
and open the case.
2. Insert the batteries, matching the
polarity symbols (+ and -) marked
inside.
3. Replace the back cover and secure
with the screw.
Fuse
If the meter stops working, you might
need to replace the fuse. Use a 315mA, 250V, 20mm glass fuse.
Warnings:
• TO AVOID ELECTRIC SHOCK, DISCONNECT BOTH TEST
LEADS FROM THE CIRCUIT UNDER TEST BEFORE YOU
REPLACE THE BATTERIES AND FUSE.
• DO NOT OPERATE THE METER UNTIL BATTERIES ARE
PROPERLY INSTALLED AND THE BACK COVER IS IN PLACE
AND SECURED.
Battery Notes:
• Dispose of old batteries promptly and properly. Do not burn
or bury them. Use only fresh batteries of the required size
and type. Do not mix old and new batteries, or batteries with
different capacities or different chemistries.
• If you do not plan to use your meter for a week or more,
remove the batteries. Batteries can leak chemicles that may
damage electronic parts.
Using Your Multimeter
When you take readings, keep the meter positioned flat on a non-metallic surface, and look at the scale from an
angle where the needle and its reflection in the mirror come together. Use a range position that results in a reading
in the upper 1/3 of the meter scale. For example, for range position 250DC V, the reading from 170 to 250 is
preferable. When you are not using the meter, always set the Range Switch to OFF to save power.
Caution: An analog multimeter is delicate, handle it carefully. Dropping or knocking the meter may break its needle.
Measuring DC/AC Voltage
Do NOT try to measure voltages greater than
500V DC or 500 V AC.
1. Set the Range Switch to a DC V / AC V position.
Note: If you are unsure of the voltage of the circuit
under test, set the Range Switch to 500DC V o
500AC V. Then keep trying the lower range positions
until the reading appears in the upper 1/3 of the scale.
2. Power off the circuit.
3. Touch the Test Leads to the circuit:
red=positive, black=negative.
4. Power on the circuit and read the DC or AC voltage.
Range
DC V
AC V
DC mA
Ω
Position
10
25
50
250
500
50
250
500
25
250
10
100
1K
Scale to Read
DC V mA 10
DC V mA 250
DC V mA 50
DC V mA 250
DC V mA 50
AC V 50
AC V 250
AC V 50
DC V mA 250
DC V mA 250
Ω
Ω
Ω
Multiplier
x1
x 0.1
x1
x1
x 10
x1
x1
x 10
x 0.1
x1
x 10
x 100
x 1000
Cautions:
• When measuring high-voltage circuits, do not
position both probes at once. Connect the black Test
Lead first to the circuit’s neutral or ground lead. Then,
using one hand only, probe for voltages with the
other probe. This helps prevent you from accidentally
touching a hot wire.
• Make sure the Range Switch is not set to a Ω or
DC mA range position when measuring voltages.
Measuring DC Current
1. Set the Range Switch to a DC mA position.
2. Power off the circuit under test and discharge all
capacitors.
3. Break the electrical path of the circuit. Connect the
Test Leads to the electrical path:
red=positive, black=negative.
The connection must be in series with the current.
4. Power on the circuit and read the current.
©2007. RadioShack Corporation.
All rights reserved. RadioShack and RadioShack.com are trademarks used by RadioShack Corporation.
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Measuring Batteries
1. Set the Range Switch to a BATT position according to
the type of the battery under test.
2. Touch the Test Leads to the battery’s terminals:
red=positive, black=negative.
3. Read the result on the BATT scale.
• GOOD – The battery has sufficient capacity.
• ? – The battery strength is marginal.
• BAD – Replace or recharge the battery.
Note: Your meter uses a fuse with 3.9Ω resistance. Fuses
of other resistance may give an inaccurate reading for
the 1.5V BATT position.
What’s Included
Analog Multimeter
User’s Guide
Safety Precautions
• Do not use the meter if you are unfamiliar with
electrical circuits and testing procedures.
• This meter is for measuring household AC voltages,
not for commercial or industrial use. Do NOT try to
measure 3-phase, line-to-line voltages.
• Use extreme caution when working with voltages
above 40V. Always power off the circuit under test
before you connect the Test Leads to high-voltage
points.
• To reduce the risk of fire or shock hazard, do not
expose the meter to rain or moisture. It is for indoor
use only.
Special Panel Markings
500V
MAX
500V
250mA
MAX
Measuring Resistance
1. Set the Range Switch to a Ω position.
2. Power off the circuit under test and discharge all
capacitors.
3. Touch the Test Leads together and turn the Resistance
Zero Adjust control to set the needle to 0 on the Ω scale.
4. Touch the Test Leads across the circuit or component
under test. It is best to disconnect one side of the
component from its circuit so the rest of the circuit
will not interfere with the reading.
5. Read the result on the Ω scale.
Measuring Decibel (dB)
1. Set the Range Switch to an AC V position.
2. Touch the Test Leads across the circuit under test.
3. For the 50AC V position, the measurement is the
reading on the dB scale. For 250AC V, add 14 to the
reading; for 500AC V, add 20. (See the table at the
lower right of the scale panel.)
Note: For an absolute dB measurement, the circuit
impedance must be 600Ω. 0dB = 1 milliwatt dissipated
in a 600Ω impedance (equivalent to 0.775V across 600Ω).
Continuity Check
Set the Range Switch to the Ô position. Touch the Test
Leads together. The built-in buzzer sounds. If it does not
sound, replace the batteries.
Touch the test leads to the two ends of a unit,
• if the buzzer sounds, the unit has a resistance less
than about 300Ω.
• if the buzzer does not sound, the unit has a resistance
over 300Ω.
Test Lead (2)
CAT II
To avoid electric shock and damage to the meter, do
not connect the ground terminal to any source that
exceeds 500 volt with respect to ground.
The maximum input limit for voltage measurement is
500V AC and 500V DC, and the maximum input limit
for current measurement is 250 mA DC.
Caution: RISK OF ELECTRIC SHOCK! Refer to the
complete operating instructions.
Caution: Be extremely careful when making highvoltage measurement. DO NOT TOUCH TERMINALS
OR PROBE ENDS.
This equipment is rated for installation category II
(3600VA max.).
Specifications
Power Supply................................................. Two AAA Batteries
Operating Temperature.......................... 32 to 122°F (0 to 50°C)
Storage Temperature..................... –43.6 to 149°F (������������
–�����������
42 to 65°C)
Decibel........................................................................ +4 to 56dB
Sensitivity............................................5KΩ / Volt for DC Voltage,
2KΩ / Volt for AC Voltage
Accuracy of AC/DC Voltage, DC Current, and Resistance........
........................................................................... ±5% of Full Scale
Ranges
DC Voltage............................................10V, 25V, 50V, 250V, 500V
AC Voltage........................................................... 50V, 250V, 500V
DC Current............................................................. 25mA, 250mA
Battery Test.......................................... 1.5V Button-cell, 9V, 1.5V
Resistance................................... Ô (Continuity), X10, X100, X1K
Specifications are subject to change and improvement
without notice. Actual product may vary from the images
found in this document.
Limited 90-Day Warranty
This product is warranted by RadioShack against manufacturing
defects in material and workmanship under normal use for ninety
(90) days from the date of purchase from RadioShack companyowned stores and authorized RadioShack franchisees and dealers.
For complete warranty details and exclusions, check with your local
RadioShack store.
RadioShack Customer Relations
300 RadioShack Circle, Fort Worth, TX 76102
04/04
www.radioshack.com
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09A07
Printed in China
09/18/2007 16:55:27