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Digital Multimeter
Instruction Manual
183A
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2 3
G. TROUBLE SHOOTING GUIDE . . . . . . . . . . .27
3. Battery Replacement . . . . . . . . . . . . . .26
4. Cleaning Your Meter . . . . . . . . . . . . . .27
F. MAINTENANCE
1. Testing Fuses in Circuit . . . . . . . . . . . .25
2. Fuse Replacement . . . . . . . . . . . . . . .25
i) Measuring Frequency . . . . . .22
j) Measuring Temperature . . . .23
k) Record Mode . . . . . . . . . . . .24
l) Relative Mode . . . . . . . . . . .24
The 183A comes complete with the following accessories:
183A Instrument
Rubber Boot
Test Lead Set
Thermocouple probe and adapter
Instruction Manual
f) Measuring Diodes . . . . . . . .19
g) Continuity Buzzer . . . . . . . . .20
h) Measuring Capacitance . . . .21
• AUTO OFF Preserves battery life.
2. Step by Step Procedures:
b) Rotary Switch . . . . . . . . . . . .13
c) Input Jacks . . . . . . . . . . . . . .13
d) Disable Auto Power Off . . . .13
e) Activate PC Communication .13
a) Measuring DC Volts . . . . . . .14
b) Measuring AC Volts . . . . . . .15
c) Measuring DC Amps . . . . . .16
d) Measuring AC Amps . . . . . .17
e) Measuring Resistance . . . . .18
• REC Records Min/Max readings during
• RANGE Allows the user to manually range the
• HOLD Holds the reading on the display for
• REL Displays the value as a difference to
D. MEASUREMENT TECHNIQUES
3. Specifications . . . . . . . . . . . . . . . . .8-11
1. Controls and Functions . . . . . . . . . . .12
C. TECHNICAL DATA
1. Features and Benefits . . . . . . . . . . . . . .6
2. Product Applications . . . . . . . . . . . . . .7
a) Push Buttons . . . . . . . . . . . .12
2. Product Description
The 183A is a hand-held autoranging DMM. The 183A
measures ACV, DCV, ACA, DCA, Resistance, Frequency,
Duty Cycle, Diodes, Capacitance, Temperature and
Continuity.
The 183A also features:
TABLE OF CONTENTS
B. SAFETY CONSIDERATIONS . . . . . . . . . . . . .5
3. EC Declaration of Conformity . . . . . . . .4
warranty. Please remember to complete and return your
product warranty registration card.
A. INTRODUCTION
1. Congratulations . . . . . . . . . . . . . . . . . .3
2. Product Description . . . . . . . . . . . . . . .3
A. INTRODUCTION
1. Congratulations!!
Thank you for purchasing TPI products. The meter is easy
to use and is built to last. It is backed by a 3 year limited
easy viewing.
a reference value
specified measurement intervals.
183A instead of autoranging.
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4
NEVER
• Attempt to measure unknown high voltages.
• Attempt to measure current with the meter in
• Connect the test leads to a live circuit before
• Touch any exposed metal part of the test lead
parallel to the circuit.
setting up the instrument.
assembly.
• Disconnect power to circuit then, connect test
leads to the 183A, then to circuit being
measured.
immunity standards, the accuracy can be affect-
ed by strong radio emissions not covered in the
above standards. Sources such as hand held
radio transceivers, radio and TV transmitters,
vehicle radios and cellular phones generate
electromagnetic radiation that could be induced
into the test leads of this instrument. Care
should be taken to avoid such situations or
alternatively, check to make sure that the
instrument is not being influenced by these
emissions.
AL
WAYS
• Test the 183A before using it to make sure it is
• Inspect the test leads before using to make sure
• Double check all connections before testing.
• Have someone check on you periodically if
• Have complete understanding of circuit being
operating properly.
working alone.
measured.
there are no breaks or shorts.
To ensure conformity with these standards, this instrument
must be operated in accordance with the instructions and
specifications given in this manual.
CAUTION:
Even though this instrument complies with the
following standards:
EN61326 : 1997 + A1 + A2 : 2001
EN61010-1 :2001 Safety Standard
protection requirements of the council directive
89/336/EEC, in the approximation of laws of the member
states relating to Electromagnetic compatibility and
73/23/EEC, The Low Voltage Directive by application of the
GENERAL GUIDELINES
Read instructions before operating:
Be sure these instructions accompany the tool when
passed from one user to a new or inexperienced user.
Equipment is used in a manner not specified by the
manufacturer, the protection provided by the
equipment may be impaired.
complete understanding of the circuit is obtained.
WARNING
procedures whenever possible. Do not attempt to
measure unknown voltages or components until a
3. EC Declaration of Conformity
This is to certify that model 183A conforms to the
B. SAFETY CONSIDERATIONS
: Please follow manufacturers test
5
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Record Mode Records Min/Max values.
Relative Mode Displays
Range Allows you to either manual range or
3 Year Covered by a standard 3 year warranty.
Warranty
switch to the OFF position to restart
use auto range to select the appropri-
ate range.
DCmA • Circuit current draw
the meter.
DCV • Battery and circuit voltage.
OHMS • Continuity of wires and fuses.
ACV • ABS brake sensors.
1. Features and Benefits
Agency Approval Meets CE and IEC 61010-1 require-
Auto Power OFF Active when APO is on the left side of
ments. UL Listed to U.S. and Canadian
Safety Standards.
the LCD display. Instrument automati-
cally powers off after 15 minutes of
inactivity. You must return the rotary
ACV • Measure line voltage.
OHMS • Continuity of circuit breaker.
DCV • Voltage of direct drive DC motors.
AUTOMOTIVE
OHMS • Continuity of wiring.
ELECTRICAL
C. TECHNICAL DATA
REFER TO INSTRUCTION MANUAL
GROUND
FUSE
DOUBLE INSULATION
ACA • Heat anticipator current in thermostats.
ACV • Line voltage.
ACV or DCV • Control circuit voltage.
DCμA • Flame safeguard control current.
OHMS • Heating element resistance (continuity).
OHMS • Compressor winding resistance.
OHMS • Contactor and relay coil resistance.
INTERNATIONAL SYMBOLS
DANGEROUS VOLTAGE
AC (ALTERNATING CURRENT)
DC (DIRECT CURRENT)
2. Product Applications
FUNCTION
DCmV • Thermocouples in furnaces or gas
Perform the following tests and/or measurements
with the TPI 183A and the appropriate function:
HVAC/R
applications.
76
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40V 0.01V 10M>
400V 0.1V ±(2.0% + 5 digits)
750V 1V
400k> 0.1k>
4M> 0.001M> ±(1.0% +5 digits)
40M> 0.01M> ±(1.5% +10 digits)
750V 1V ±(1.0% + 5 digits)
e. ACV (True-RMS, 400Hz - 1kHz)
Range Resolution Accuracy Impedance
4V 0.001V ±(1.5% +5 digits)
i. OHM (Resistance,
Range Resolution Accuracy Overload Protection
400> 0.1> ±(0.8% +5 digits) 600V DC or
4k> 0.001k> AC Peak
40k> 0.01k> ±(0.5% +3 digits)
Range Resolution Accuracy Impedance
40mV 0.01mV ±(1.5% + 3 digits) 10M>
400mV 0.1mV
d. ACV (True-RMS, 40 - 400Hz)
Range Resolution Accuracy Impedance
400mV 0.1mV ±(1.5% + 3 digits)
4V 0.001V
40V 0.01V ±(0.75% + 3 digits) 10M>
400V 0.1V
Range Resolution Accuracy Overload Protection
400μA 0.1μA Fuse
4000μA 1μA ±(1.2% +5 digits) 0.5Amp/600V
40mA 0.01mA
400mA 0.1mA
4A 0.001A ±(1.5% +10 digits) Fuse
10A 0.01A 10Amp/600V
*Warning: Use only correct size, voltage and current rated fuses.
Test Leads: Use only correct type and overvoltage category rating.
400mV 0.1mV
4V 0.001V
40V 0.01V ±(0.5% + 2 digits) 10M>
400V 0.1V
1000V 1V
c. ACmV (True-RMS, 40 - 400Hz)
40mA 0.01mA
400mA 0.1mA
4A 0.001A ±(1.2% +5 digits) Fuse
10A 0.01A 10Amp/600V
h. ACA (True-RMS)
400mV 0.1mV
b. DCV
Range Resolution Accuracy Impedance
Range Resolution Accuracy Overload Protection
40μA 0.01μA ±(0.8% +2 digits)
400μA 0.1μA Fuse
4000μA 1μA ±(0.8% +5 digits) 0.5Amp/600V
40mV 0.01mV ±(0.5% + 2 digits) 10M>
g. DCA
a. DCmV
Range Resolution Accuracy Impedance
750V 1V
CAT II - 1000V
CAT III - 600V
Pollution Degree 2
Range Resolution Accuracy Impedance
4V 0.001V ±(2.0% + 5 digits)
40V 0.01V 10M>
400V 0.1V Unspecified
3. Specifications
IEC 61010-1 Over Voltage:
f. ACV (True-RMS, 1kHz - 20kHz)
W
)
9
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1MHz 0.001MHz
10MHz 0.01MHz
10KHz 0.01KHz AC Peak
100KHz 0.1KHz
10Hz 0.01Hz
100Hz 0.1Hz
1KHz 0.001KHz ±(0.05% +3 digits) 600V DC or
4000uF 1uF ±(7.0% +10 digits)
n. Frequency (Hz)
Range Resolution Accuracy Overload Protection
400uF 0.1uF
4uF 0.001nF ±(3.0% +10 digits) 600V DC or
40uF 0.01uF AC Peak
400nF 0.1nF
40nF 0.01nF
0.6V < 30> 600 V DC or Peak AC
m. Capacitance
Range Resolution Accuracy Overload Protection
Test Voltage Max Test Current Over Load Protection
2.7V Approx. 1mA 600 V DC or Peak AC
l. Continuity Buzzer
Test Voltage Threshold Over Load Protection
j. Duty Cycle / Hz
Range
0.1 ~99.9% (0.5Hz to 500kHz, Width > 2uS)
Accuracy
((0.1% + 0.05% / kHz) +1 Count
k. Diode Test
o. Temperature (K-Type)
Range Resolution Accuracy
CENTIGRADE
-40° to 10°C 0.1° ±(3.0% + 5°C)
10° to 200°C 0.1° ±(1.0% + 3°C)
200° to 400°C 0.1° ±(2.0% + 5°C)
400° to 1300°C 1°C ±(3.0% + 7°C)
FAHRENHEIT
-40° to 50°F 0.1° ±(6.0% + 10°F)
50° to 392°F 0.1° ±(2.0% + 6°F)
392° to 752°F 0.1° ±(4.0% + 10°F)
752° to 2372°F 1°F ±(6.0% + 14°F)
p. General Specifications
Max. Volt. between 1000V
any Input and Ground
Fuse Protection mA: 0.5Amp/600VAC A: 10Amp/600VAC
Display Type 4,000 Count, 2 times per second update
Operating Temp. 0° to 40°C (32° to 104°F)
Storage Temp. -10° to 50°C (14° to 122°F)
Relative Humidity 0% to 80%
Power Supply 2 Each 1.5 Volt “AA” Batteries
Battery Life 200 hrs. Typical
Size (H x L x W) 33mm x 86mm x 187mm (1.3in x 3.4in x 7.4in)
Weight 340g (12oz)
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HOLD
Holds the reading on the display until the button
is pushed a second time.
FUNCTION
LPF
Activates optonal fuctions highlighted in orange
around dial. APO (Auto Power Off) is disabled in
this function. Hold in for 3 seconds to deactivate.
Activates Low Pass Filter.
Hz/DUTY
REL
Displays value as a difference of reference value.
Activates communiction with PC.
REC
to return to autorange.
Activates the Min/Max mode.
Toggles the ACV or ACA measurement mode to
Hz or Duty Cycle mode.
Switch
RANGE
a. Push Buttons
Activates manual ranging. Hold in for 3 seconds
Jacks
Input
Rotary
Buttons
Push
Display
LCD
D. MEASUREMENT TECHNIQUES
1. Controls and Functions:
A Red test lead connection for current
e. Activate PC Communication
With the 183A turned on in any function, press and
hold down the REL button until APO turns off on the
LCD.
1312
d. Disable Auto Power Off (APO)
With the rotary switch in the OFF position Press and
hold down the FUNCTION push button while turning
the instrument on.
measurements on the A function.
uAmA Red test lead connection for current
measurements on the uA and mA functions.
W
Hz Red test lead connection for all Volt, Ohm,
milliamps.
Frequency and Capacitance functions.
Function for measuring up to 10 AC/DC amps
Hz Function for measuring Frequency
CAP Function for measuring Capacitance
c. Input Jacks
V
COM Black test lead connection for all functions.
b. Rotary Switch
40 Function for measuring up to 40 DC micoamps
Function for measuring AC/DC millivolts (mV).
Funtion for measuring resistance, diode testing
and continuity buzzer
(uA)
Function for measuring up to 4000 AC/DC
microamps.
Function for measuring up to 400 AC/DC
OFF Turns the 183A off.
Function for measuring AC voltage (ACV).
Function for measuring DC voltage (DCV).
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Optional Functions:
HOLD
REL
Activate REL mode (page 24).
Freeze the reading on the LCD.
HOLD
Freeze the reading on the LCD.
RANGE
REC
Manually select the appropriate range.
Activate MIN/MAX record mode (page 24).
Hz/DUTY
REL
Scroll between Hz, Duty, and Volts.
Activate REL mode (page 24).
7. Read the voltage on the 183A.
RANGE
REC
Manually select the appropriate range.
Activate MIN/MAX record mode (page 24).
Measurement Procedure:
1. Disconnect power to the circuit to be measured.
2. Plug the black test lead into the COM input jack.
3 Plug red test lead into the V
4. Set rotary switch to either the or range,
5. Connect the test leads to the circuit to be measured.
6. Reconnect power to the circuit to be measured.
depending on the voltage to be measured.
W
Hz input jack.
Optional Functions:
1. Disconnect power to the circuit to be measured.
2. Plug the black test lead into the COM input jack.
3. Plug the red test lead into the V
4. Set the rotary switch to the function depending on
5. Connect the test leads to the circuit to be measured.
6. Reconnect power to the circuit to be measured.
7. Read the voltage on the 183A.
the voltage to be measured.
Instrument set-up:
FUNCTION BLACK RED MINIMUM MAXIMUM
mV COM V>Hz 0.1mV 400.0mV
V COM V>Hz 0.001V 1000V
voltage level that is unknown.
TEST LEAD TEST LEAD READING READING
Measurement Procedure:
Instrument set-up:
FUNCTION BLACK RED MINIMUM MAXIMUM
TEST LEAD TEST LEAD READING READING
COM V
2. Step by Step Procedures:
a. MEASURING DC VOLTS
CAUTION!
Do not attempt to make a voltage mea
surement if a test lead is plugged in the
A or μmA input jack. Instrument damage
and/or personal injury may result.
W
Do not attempt to make a voltage
measurement of more than 1000V or of a
ARNING!
b. MEASURING AC VOLTS
CAUTION!
Do not attempt to make a voltage measure
ment if a test lead is plugged in the A or
μmA input jack. Instrument damage and/or
personal injury may result.
W
Do not attempt to make a voltage measure
ment of more than 750V or of a voltage l
level that is unknown.
ARNING!
W
Hz 0.001V 750V
W
Hz input jack.
1514
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Optional Functions:
HOLD
REL
Activate REL mode (page 24).
Freeze the reading on the LCD.
16
RANGE
REC
Manually select the appropriate range.
Activate MIN/MAX record mode (page 24).
Optional Functions:
HOLD
Freeze the reading on the LCD.
Hz/DUTY
REL
Scroll between Hz, Duty, and Volts.
Activate REL mode (page 24).
RANGE
REC
Manually select the appropriate range.
Activate MIN/MAX record mode (page 24).
2. Plug the black test lead into the COM input jack.
3. Plug the red test lead into the μAmA or A input jack
4. Set the rotary switch to the 40μA, μA, mA, or A
5. Connect test leads in series to circuit to be measured.
6. Reconnect power to the circuit to be measured.
7. Read the current on the 183A.
depending on the value of current to be measured.
function.
2. Plug the black test lead into the COM input jack.
3. Plug the red test lead into the μAmA or A input jack
4. Set the rotary switch to the μA, mA or A function.
5. Press the AC/DC pushbutton to set to AC mode.
6. Connect test leads in series to circuit to be measured.
7. Reconnect power to the circuit to be measured.
8. Read the current on the 183A.
depending on the value of current to be measured..
Measurement Procedure:
40μA COM μAmA 0.01μA 40μA
μA COM μAmA 0.1μA 4000μA
mA COM μAmA 0.01mA 400mA
1. Disconnect power to circuit to be measured.
10A COM A 0.001A 10.00A
Measurement Procedure:
μA COM μAmA 0.1μA 4000μA
mA COM μAmA 0.01mA 400mA
1. Disconnect power to the circuit to be measured.
10A COM A 0.001A 10.00A
TEST LEAD TEST LEAD READING READING
Instrument set-up:
FUNCTION BLACK RED MINIMUM MAXIMUM
damage and /or personal injury may result.
TEST LEAD TEST LEAD READING READING
Instrument set-up:
FUNCTION BLACK RED MINIMUM MAXIMUM
present. Instrument damage and /or
personal injury may result.
c. MEASURING DC AMPS
CAUTION!
Do not attempt to make a current measurement with
the test leads connected in parallel with circuit to be
tested. Test leads must be connected in series with
the circuit.
W
Do not attempt to make a current measurement of
circuits with more than 600V present. Instrument
ARNING!
d. MEASURING AC AMPS
CAUTION!
Do not attempt to make a current measure
ment with the test leads connected in
parallel with the circuit to be tested. Test
leads must be connected in series with the
circuit.
W
Do not attempt to make a current measure
ment of circuits with more than 600V
ARNING!
1716
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Optional Functions:
HOLD
REL
Activate REL mode (page 24).
Freeze the reading on the LCD.
RANGE
REC
Manually select the appropriate range.
Activate MIN/MAX record mode (page 24).
NOTE: If diode reads 0 in both directions, diode is short-
ed. If diode reads OFL in both directions, diode is open
Measurement Procedure:
Instrument set-up:
FUNCTION BLACK RED MINIMUM MAXIMUM
3. Plug the red test lead into the V
4. Set the rotary switch to the function.
> COM V>Hz 0.1> 40.00M>
TEST LEAD TEST LEAD READING READING
1. Disconnect power to the circuit to be measured.
2. Plug the black test lead into the COM input jack.
5. Connect the test leads to the circuit to be measured.
6. Read the resistance value on the 183A.
4. Set the rotary switch on the 183A to the > function.
6. Reading on the display should be between
7. Reverse test lead connections in 5 above.
8. Reading on the display should be OFL (Overload).
0.5 and 0.8 volts.
1. Disconnect power to the circuit to be measured.
2. Plug the black test lead into the COM input jack.
3. Plug the red test lead into the V
W
Hz input jack.
5. Connect black test lead to the banded end of the diode
and the red test lead to the non-banded end of the
diode.
e. MEASURING RESISTANCE
WARNING!
Do not attempt to make resistance measurements
with circuit energized. For best results, remove
the resistor completely from the circuit before
attempting to measure it.
NOTE:
To make accurate low ohm measurements, short
the ends of the test leads together and press the
REL pushbutton. This value will automatically be
deducted from your reading.
Measurement Procedure:
a diode is to remove it completely from the circuit
before attempting to measure it.
Instrument set-up:
FUNCTION BLACK RED MINIMUM MAXIMUM
TEST LEAD TEST LEAD READING READING
COM V>Hz 0.001V 2.000V
Do not attempt to make diode measurements with
circuit energized. The only way to accurately test
f. MEASURING DIODES
CAUTION!
W
Hz input jack.
1918
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Optional Functions:
HOLD
REL
Activate REL mode (page 24).
Freeze the reading on the LCD.
6. Read the capacitance on the 183A.
measured.
Measurement Procedure:
1. Disconnect power to the circuit to be measured.
2. Plug the black test lead into the COM input jack.
3. Plug the red test lead into the V
4. Set the rotary switch to the function.
5. Press yellow push button to activate continuity buzzer.
6. Connect the test leads to the circuit to be measured.
7. Listen for the buzzer to confirm continuity.
W
Hz input jack.
Measurement Procedure:
Instrument set-up:
FUNCTION BLACK RED MINIMUM MAXIMUM
5. Connect the test leads to the capacitor to be
3. Plug the red test lead into the V
4. Set the rotary switch to the CAP function.
1. Disconnect power and discharge the capacitor to be
2. Plug the black test lead into the COM input jack.
measured.
CAP COM V
TEST LEAD TEST LEAD READING READING
g. CONTINUITY BUZZER
Do not attempt to make continuity measurements
with circuit energized.
Instrument set-up:
FUNCTION BLACK RED
WARNING!
TEST LEAD TEST LEAD
COM V>Hz
h. MEASURING CAPACITANCE
CAUTION!
Disconnect power to the circuit(s) to be
measured. Discharge the capacitorto be
measured completely before attempting to
measure.
W
Hz 0.01nF 4000uF
W
Hz input jack.
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Optional Functions:
Hz/DUTY
HOLD
Scroll between Hz and Duty %.
Freeze the reading on the LCD.
7. Read the frequency on the 183A.
Optional Functions:
FUNCTION
HOLD
Toggle between °C or °F.
HOLD the reading on the LCD.
REC
REL
Activate MIN/MAX record mode (page 24).
Activate REL mode (page 24).
Measurement Procedure:
5. Connect the test leads to the circuit to be measured.
6. Reconnect power to the circuit to be measured.
3. Plug the red test lead into the V
4. Set the rotary switch to the Hz function.
W
Hz input jack.
2. Plug the black test lead into the COM input jack.
1. Disconnect power to the circuit to be measured.
Hz COM V
TEST LEAD TEST LEAD READING READING
W
Hz 0.001Hz 10MHz
Measurement Procedure:
5. Plug a K-type temperature probe into the temperature
6. Read the temperature on the 183A.
input adpater observing the correct polarity.
3. Plug the “+” terminal of the temperature input adapter
4. Set the rotary switch to the TEMP function.
into the μmATEMP input jack.
1. Remove test leads from the 183A.
2. Plug the “-” terminal of the temperature input adapter
into the COM input jack.
Instrument set-up:
FUNCTION BLACK RED MINIMUM MAXIMUM
Never attempt a frequency measurement
with a voltage source reater than 600V
Instrument set-up:
FUNCTION TEMP. TEMP. MINIMUM MAXIMUM
TEMP COM μmATEMP 0.1°F 2462°F
INPUT ADPT. INPUT ADPT. READING READING
i. MEASURING FREQUENCY
CAUTION!
Do not attempt to make a frequency
measurement if a test lead is plugged in the
A or μmA input jack. Instrument damage
and/or personal injury may result.
W
ARNING!
j. MEASURING TEMPERATURE
CAUTION!
Disconnect power to the circuit(s) to be
measured. Discharge the capacitorto be
measured completely before attempting to
measure.
0.1°C 1350°C
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The Relative mode compares readings to a known value
and displays it as a difference to that value on the LCD.
2. Measure next device for comparison.
3. The LCD will display the difference between the
5. To terminate the Relative mode, hold the REL
new device and the stored reference value.
button down for approximately 2 seconds or
turn the rotary switch to a different function.
e. Remove the old fuse(s) and replace it with new
f. Reassemble the instrument in reverse order
fuse(s).
from above.
1. Measure the known value on the 183A and
press the REL button, the LCD will display
zero.
b. Remove 183A from protective boot.
c. Remove the three screws from the lower back of
d. Remove the compartment cover.
housing holding the compartment cover in place.
l. RELATIVE MODE
3. Press the REC button a second time and the
4. Press the REC button a third time and the MAX
5. To terminate the record mode, hold the REC
The 183A will give a confirmation beep every
time a new value is recorded.
MIN reading will be displayed.
reading will be displayed on the LCD.
button down for approximately 2 seconds or
turn the rotary switch to a different function.
2. Fuse Replacement: Both the A and mAμA input jacks
a. Disconnect and remove all test leads from live
are fuse protected. If either do not function, replace
fuse as follows:
circuits and from the 183A.
e. Repeat the same procedure for the uAmA input
jack.
d. If the display reads any number, the fuse is good.
If the display reads .OL, the fuse is open and
must be replaced.
k. RECORD MODE
The record mode saves minimum (MIN) and maximum
(MAX) values measured for a series of reading. Activate
the function as follows:
1. Depress the REC button on the 183A.
2. The 183A will immediately start to record
MIN/MAX values. REC will be on the LCD to
show record mode has been activated. The
reading on the LCD will be the actual reading.
F. MAINTENANCE
1. Testing Fuses In Circuit: Both the A and mAμA input
a. Set the 183A to the diode test function.
b. Insert the red test lead into the V input jack.
c. Touch the tip of the red test lead into the A
input jack making sure you contact the metal.
jacks are fuse protected. The fuses can be tested
without removing them from the instrument as
follows:
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Alkaline Battery
1.5 volt “AAA”
(2 each)
0.5 Amp
Fuse
Fuse
10 Amp
e. Remove old batteries and replace with new
f. Reassemble instrument in reverse order from
batteries.
above.
Battery/Fuse Compartment
3. Battery Replacement: The 183A will display a battery
symbol in the upper left corner of the LCD when the two
internal 1.5 Volt “AAA” batteries need replacement.
Batteries are replaced as follows:
a. Disconnect and remove all test leads from live
b. Remove 183A from protective boot.
c. Remove the three screws from the lower back of
d. Remove the compartment cover.
housing holding the compartment cover in place.
circuits and from the 183A.
Won’t display current readings
• Open fuse
• Open test lead
• Improperly connected to
circuit under test
2726
snap to PCB
Does not power up
• Dead or defective battery
• Broken wire from battery
3. Cleaning Your Meter: The 183A can be wiped clean
with a damp cloth and mild detergent. Do not sub-
merse in water.
G. TROUBLE SHOOTING GUIDE
Problem Probable Causes
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