VICI CM-2016 Instruction Manual

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DIGITAL CLAMP METER
OPERATION

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OPERATION MANUAL
CONTENTS
I.SUMMARY... . 1
2.SAFETY NOTICE 1
3.FEATURES......... .. 2
3.I. GENERAL FEATURES 2
3.2. TECHNICAL FEATURES 2
4.OPERATlON · 5
4.I.PANEL DESCRIPTlON 5
4.2.DCV MEASUREMENT 7
4.3.ACV MEASUREMENT 7
4.4.DCA MEASUREMENT 8
4.5.ACA MEASUREMENT 9
4.6. RESISTANCE MEASUREMENT 9
4.7. DIODE AND CONTlNUlTY TEST 10
4.8. CAPACITANCE TEST 11
4.9. FREQUENCY MEASUREMENT 11
4.10. TEMPERATURE TEST 12
4.II. NON-CONTACNT VOLTAGE DETECT 12
4.12. AUTO POWER OFF · 13
5.MAINTENANCE 13
6.TROUBLE SHOOTING 13
The meter is a precision instrument. To avoid damage injury caused by wrong operation,
please read this manual carefully before operation.
1.SUMMARY
This is a 3 5/6 digit digital AC/DC clamp meter with good stability and reliability.
It has a LCD with 14mm digit display, which gives clear readings.
It can test DC V, AC V, DC A, AC A, resistance, capacitance, frequency, temperature,
diode continuity, as well as non-contact AC voltage test. It is equipped with clamp jaw,
lighting, unit symbol display, data hold function, auto power off and warning functions.
It works in both auto range and manual range. To assure high accuracy and resolution,
it adopts a micro-processor which drives the LCD directly and a dual integral A/D
converter IC. It is an ideal tool for labs, factories radio-technology and household.

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2. SAFETY NOTlCE
Tbe meter is designed to be in compliance with IEC1010-I (EN61010-1), pollution 2,
CAT.III 600V and UL3111-1. Please read this manual carefully before operation.
2-1.SAFETY SYMBOLS
" "CAUTION: Refer to manual before operation.
" " Low battery indication.
" " WARNING: High voltage!
" "Double insulation.
2-2.SAFETY lNSTRUCTIONS
2-2-1. To avoid damage to the meter or personal injury, please read this manual carefully
before operation, and follow instructions in this manual during operation.
2-2-2. Disconnect all signals and plug offtest leads before opening the case cover.
To avoid electric shock or damage to the meter, water should not be leaked inside.
2-2-3. DO NOT use the meter to do any test before the case cover or screws is fully
Assembled.
2-2-4. DO NOT input any value higher than the rated limit.
2-2-5. DO NOT input voltage to terminals in resistance range.
2-2·6. Turn the power switch to OFF position after use.
2.2.7. To avoid damage by battery leakage, remove batteries before long-term storage.
2.2.8. Voltage above 60Vdc or 30Vac RMS will cause severe electric shock.
2.2.9. To avoid electric shock, be careful when nipping naked testing objects.

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3.FEATURES
3.1. GENERAL FEATURES
3.1.1. Display: LCD.
3.1.2. Max. display: 6000 digits, and auto polarity display.
3.1.3. Clamp open max.28mm.
3.1.4. Over-range display: "OL".
3.1.5. Data hold.
3.1.6. Relative Value measurement.
3.1.7. Sampling rate: 3 times/sec.
3.1.8. The symbol "" appears when battery is low.
3.1.9. Continuity test: buzzer alarms when < (50±10) Ω.
3.1.10. Auto range or Manual range.
3.1.11. Auto power off.
3.1.12. Power consumption: approx.3mA.
3.1.13. Power source: 2 x 1.5V batteries (AAA).
3.1.14. Operating environment: (0-40)°C, relative humidity: <70%.
3.1.15. Dimension: 123Wx270Dx35H mm.
3.1.16. Weight: approx. 280g (including batteries).
3.1.17. Accessories: operation manual x 1pc, test leads x 1 pair,
temperature probe TP01 x 1 pair, 1,5V AAA batteries x 2pcs,
carrying bag x 1pc (optional).
3.2. SPECIFICATIONS
3.2.1. Accuracy: ±(a% of reading + digits). To ensure accuracy, the ambient temperature
should be (23±5)°C and the relative humidity shall be less than 70%. The accuracy is
guaranteed for one year since production date.
3.2.2. Temperature co-efficiency: 0.1 of specified accuracy/1°C (<18°C or >28°C).
3.2.3. DC Voltage (DCV)
Range Accuracy Resolution
600mV ±(1.0% of reading + 5) 0.l mV
6V
±(0.5% of reading + 5)
0,001 V
60V 0,01 V
600V 0,1 V
Input impedance: 10M Ω. Overload production: 1000Vrms.

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3.2.4. AC Voltage (ACVrms)
Range Accuracy Resolution
600mV ±(1.5% of reading + 5) 0.l mV
6V
±(1,0% of reading + 5)
0,001 V
60V 0,01 V
600V 0,1 V
Input impedance: 10MΩ. Overload production: 1000Vrms
Frequency response: 750 V at 40Hz - 1 kHz, other ranges 40Hz - 400Hz.
3.2.5. DC Current (DCA)
Range Accuracy Resolution
600 A (2.0% + 30) 0.l A
NOTE: Clear to zero before measurement. The testing object shall be placed in the
middle of the clamp jaw.
3.2.6. AC Current (TRMS)
Range Accuracy Resolution
600 A (2.0% + 30) 0.l A
Frequency response: Sine wave and triangle wave 40Hz - 1kHz;
other waveforms 40Hz - 200Hz.
NOTE:The testing object shall be placed in the middle of the clamp jaw.
3.2.7. Resistance (Ω)
Range Accuracy Resolution
600 Ω(0.8% + 5) 0,1 Ω
6 kΩ
(0.8% + 3)
1 Ω
60 kΩ10 Ω
600 kΩ100 Ω
6 MΩ1 kΩ
60 MΩ(1.0% + 25) 10 kΩ
Open circuit voltage: <3 V. Over load protection: 250Vrms.
NOTE:
a) In 600 Ωrange, short the test leads to measure the wire resistance,
and then subtract it from the real measurement value.
b) When measure resistance over 1 MΩ, it is normaI that the reading reacts slowly.
Please wait until the reading is stable.
WARNING: DO NOT input voltage in this range.

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3.2.8. Capacitance (C)
Range Accuracy Resolution
60 nF
(3.5% + 20)
10 pF
600 nF 100 pF
6 µF 1 nF
60 µF 10 nF
600 µF (5.0% + 10) 100 nF
6000 µF 1 µF
Over load protection: 250Vrms.
WARNlNG: DO NOT input voltage in this range.
3.2.9. Frequency (f)
Range Accuracy Input sensitivity
20 MHz (1.0% + 3) >0.7V
Over load protection: 250 Vrms.
3.2.10. Temperature
Range Accuracy Resolution
-40°C - 1000°C (1.0% + 5) < 400°C 1°C
(1.5% + 15) ≥400°C
0°F - 1832°F (0.75% + 5) < 750°F 1°F
(1.5% + 15) ≥750°F
Sensor: K type banana plug (Nickel-Chromium Nickel-Silicon)
WARNING: DO NOT input voltage in this range.
3.2.11 Diode and Continuity test
Range Display value Testing condition
Diode forward voltage drop Forward DC current 1mA
Open circuit voltage 3V
When the testing resistance ís less
than (50±20) Ω,the buzzer
alarms continuously
Open circuit voltage 3V
Press SELECT key to switch
between two ranges
Over load protection: 250Vrms.
WARNlNG: DO NOT input voltage in this range.

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4. OPERATION lNSTRUCTIONS
4.1. PANEL lLLUSTRATON (Fig.l)
1)Clamp jaw:0-600A DCcurrent, ACcurrent
and NCVdetecting device.
2)Clamp gunlock:Press the gunlock to open
clamp jaw.
3)Hand protection: A safe design to protect
users from touching the dangerous area.
4)Clamp light:Turn on the clamp light to light
up the tested area in the dark to prevent danger.
5)NCV indicator: Detect the existence of high
voltage nearby to prevent electric shock.
6)Function rotary switch: Select functions and ranges;
Turn on or turn off the clamp meter.
Function Description
NCV Non Contact Voltage detection.
A DC A and AC A measurement. Press SELECT key to switch measurements
V~ AC Vmeasurement.Press Hz/DUTY key to switcb measurement between
frequency and duty ratioin high voltage amplitude
V DC Vmeasurement.
Press SELECT key to switch measurement between resistance, diode,
continuity and capacitance.
Hz Frequency measurement. Press Hz/DUTY key to switch measurement
between frequency and duty ratio in low voltage amplitude
°C/°F Temperature measurement. Press SELECT key to switch between °C and
°F
7) FUNCTlON KEYS
SELECT key: This is a key to select functions, working in response to trigger. Switch
between AC or DC measurement in A Or select Ωfunction from . Or switch
between , and measurements. Or switch between·°C/°F measurements.
REL/RANGE key:
1.ln A and measurements, it is REL function. Press this key to clear "of reading"
and enter relative value measurement. REL symbol will appear on the LCD. Press this
key again to exit REL measurement. In A and measurements, if the display dose
not return to zero before measurement, press this key to return to zero before
measurement.
2.In voltage and resistance measurements, it is RANGE function, to choose from auto
range or manual range. The meter is default in auto range. Tbe symbol "AUTO" appears
on LCD. Press this key for one time to switch to manuaI range. Press it again for one time
to increase on step from low to high. Press it for more than two seconds to return to
AUTO range.

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HOLD/ key: The H O LD key is to hold " of reading", working in response to trigger.
Press this key for one time to lock the reading. Press any other keys to exit HOLD
function. Press this key for more than two seconds to turn on the LCD backlight and
clamp light at the same time. The LCD back light and clamp jaw light will be turned off
automatically after five seconds, or turned off by press this key again for more than two
seconds.
Hz/DUTY key: In AC A/ AC V measurements, press this key to switch measurement
between frequency, duty ratio, voltage and current. In frequency measurement, press this
key to switch between measurement of frequency and duty ratio (1-99%).
8) LCD panel: display the measurement values and units,
No Function Description
1 MAX-MIN Invalid
2 APO A symbol of auto power off.
3 ∆Clear to zero or in REL measurement mode.
4 HOLD Data hold funcions is activated.
5 ─A symbol for negative measurernent value.
6 AC In AC voltage or AC current measurement.
7 DC In DC voltage or DC current measurement.
8 AUTO In auto range mode.
9 Invalid
10
hFE
In transistor measurement (to measure the magnification times
of transistor)
nF,µF NanoFarad, MicroFarad
mV, V MiliVolt, Volt
µA, mA, A MicroAmp, MilliAmp, Amp
%, °C, °F Percentage (for duty rate measurement), centigrade degree.
Fahrenheit degree
NCV Non-Contact Voltage symbol
MΩ, kΩ, ΩMegaOhm, KilloOhm, Ohm
Hz, kHz, MHz Hz, KilloHz, Mega Hz
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Low battery indication.
WARNING: To avoid electric shock or personal injury, please
replace batteries in time when the low batterv indication
appears on LCD.

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(9) V/Ω.input terminal: The red one positive input terminal for voltage, resistance, diode,
capacitance, frequency and temperature measurements.lt is also COM terminal for GND
input.The black one is negative input terminal.
(10) Carrying belt.
4.2. DCV MEASUREMENT
(I) Turn the rotary function switch to V position. Plug the red test lead in to
"VΩ."terminal and the black test lead into COM terminal.
(2)Touch the test leads to the test points.
The LCD will display the testing voltage
and its polarity on the LCD(fig.3).
NOTE:
(I) The input voltage CAN NOT exceed
the rated input. Otherwise, the meter
maybe damaged.
(2) When testing high voltage circuit,
to avoid electric shock,
DO NOT touch the circuit by hands or bodies.
(3) Disconnect test leads from the testing circuit when all tests
are finished.
4.3. ACV MEASUREMENT
(I) Turn the rotary function switch to V~ position.
Plug the red test lead into "VΩ" terminal and the black
test lead into COM terminal.
(2) Touch the test leads to the test points.
Read measurement values from the LCD.
(3) Press Hz/DUTY key to display frequency
and duty ratio value.(fig.4)
NOTE:
(I) Before measurement, there are some remaining digits in each
range. It will not affect measurement accuracy.
(2) The input voltage CAN NOT exceed the rated input.
Otherwise, the meter maybe damaged.
(3)When testing high voltage circuit, to avoid electric shock,
DO NOT touch the circuit by hands or bodies.
(4) Disconnect test leads from the testing circuit when alltests
arefinished.

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4.4.DCA MEASUREMENT
(I) Turn the rotary function switch to A position.
The meter is default at DC A measurement after
power on. Press SELECT to switch
between AC or DC measurement.
(2) When the meter is used in a strong
magnetic field, the readings could
be unstahle or inaccurate. Press REL
to clear to zero before measurement.
(3)Press the clamp gunlock to open
the clamp jaw to get testing wire
inserted in the middle and clipped
completely.
To ensure measurement accuracy, please check to ensure that
the testing wire is placed in the middle of clamp jaw (fig.5).
Measure one wire in one time. If measure more than one wires
in one tirne, the reading will be inaccurate.
NOTE:
(1) The meter uses Hall component to detect current. Hall
component is a sensitive component. lt is magnetic sensitive.
It is also sensitive to temperature and mechanical stress.
Any impact on it would cause the changes on reading in a short time.
This causes some remaining values on the DC ampere reading
when there is no current. Toget accurate reading, press REL key
to clear reading before measurement, and the testing wire must
be placed in the middle of the clamp jaw.
(2) Press the clamp gunlock to open the clamp jaw to get testing
wire inserted in the middle and clipped completely. Ensure that
the testing wire is placed in the middle of clamp jaw. Otherwise
there will be additional accuracy ±l.0% of reading. Read the
measurement current value of the testing wire on the LCD.
(3 )In the measurement of the DC current, if the reading is
positive value, the current is top to down (broad is top, bottom
cover is down).
(4) The max.testing current is 600A. Exceeding the rated current
for long time will damage the meter.
Follow below instructions to get more accurate DC current
measurement:
1.) Switch off the testing wire.
2.) Press the clamp gunlock to open the clamp jaw to get testing
wire inserted in the middle and clipped completely. Ensure that
the testing wire is placed in the middle of clam pjaw.
3.) When the meter reading is stabilized in the minimum value,
press the REL key to clear it.

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4.) Switch on the testing wire. Read after clamp meter remains
stable.
5.) When measuring current, to get more accurate readings,
the ambient temperature must be 0 to 40°C.
4.5. AC A MEASUREMENT
(I) Turn the rotary function switch to A position.The meter is
default at DC A measurement after power on. Press SELECT to
switch between AC or DC measurement.
(2) When the meter is used in a strong magnetic field,
the readings could be unstable or inaccurate. Press REL
to clear to zero before measurement.
(3) Press the clamp gunlock to open the clamp
jaw to get testing wire inserted in the middle and
clipped completely. To ensure measurement
accuracy, please check to ensure that the testing
wire is placed in the middle of clamp jaw (fig.6).
NOTE:
(I) Ensure that the testing wire is placed
in the middle of clamp jaw. Otherwise there will be
additional accuracy on the reading.
(2)The max.testing current is 600A. Exceeding
the rated current for long time will damage the meter.
4.6. RESISTANCE MEASUREMENT
(I) Turn the rotaryfunction switch to" "position.
Press SELECT to choose Ωmeasurement.
(2) Plug the red test lead into "VΩ" terminal
and the black test lead into COM terminal.
(3)Touch the test leads to the test points. Read
measurement values from the LCD (fig.7). Fig.7
NOTE:
(1) When measurement is to be done in manual range,
if user has no idea about the resistance range of testing
object, switch to the highest range.
(2) If "OL" appears on LCD, it means the testing value is over
range. Switch to a higher range. lf the testing resistance is above
1M Ω, the readings take a few seconds to get stable.
(3) If the input is in open circuit, "OL"appears on LCD.
(4) When measure a live resistor, make sure that
all power sources of the testing circuit are switched off
and all capacitorsare fully discharged before measurement.
(5) If there are large errors during measurement,
it is possible that the measurement values are affected
by other livecomponents or by electric potentials

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on the two sides of the testing resistor.
(6) DO NOT input voltage in the resistance range.
4.7. DIODE AND CONTlNUITY MEASUREMENTS
(I) Turn the rotary function switch to " " position.
Press SELECT to choose diode measurement.
(The symbol appears on LCD.)
Plug the red test lead in to "VΩ" terminal
and the black test lead into COM terminal (fig.8).
Please note that the red test lead is positive.
(2) Forward measurement: Connect red test lead
to diodes positive polarity and the black test lead
to its negative polanty. The LCD will display
the approximate value of forward voltage drop.
The value 500-800 is normal measurement value
for the silicone PN junction. If the LCD displays
"OL", it means the diode is in open circuit or it is
connected in reverse polarity.
(3) Backward measurement: Connect red test lead to diode's
positive polarity and the black test lead to its negative polarity.
The LCD will display "OL". If there is breakdown of creepage
on the diode, the LCD display a certain value.
(4) A complete diode testing includes forward and backward
measurements. If the result doesn't meet the descriptions above,
it means the diode is broken.
(5) Press SELECT to choose continuity test measurement.
The symbol appears on the LCD.
(6)Touch the test leads to the test points.If the resistance
between the test points is less than (50±20) Ω, the buzzer alarms.
NOTE:
(I)To avoid damage to the meter, DO NOT input voltage in this
range.
(2) When measure a live circuit, make sure that all power sources
of the testing circuit are switched off and all capacitors are fully
discharged before measurement. The buzzer alarrns in response
to any negative electric potential or AC signal.
4.8. CAPACITANCE MEASUREMENT
(I) Turn the rotary function switch to " " position.
Press SELECT to choose measurement.
(2) Plug the red test lead in to "VΩ" terminal
and the black test lead into COM terminal (fig.9).
(3) lf there isremaining values on LCD before
measurement, press REL key to clear it.
(4) Plug the red test lead into "VΩ" terminal and

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the black test lead i nto COM terminal.
Please note that the red test lead is for positive polarity.
NOTE:
(I) DO NOT input voltage or signal in the capacitance range.
(2) If there is remaining values on LCD before measurement,
to ensure measurement accuracy, press REL keytoclear it.
(3) The meter works only in autorange during capacitance
measurement.
(4) To avoid damage to the meter, fully discharge capacitors
before measurement.
4.9. FREQUENCY AND DUTY RATlO MEASUREMENT
(I) Turn the rotary function switch to the Hz position. Plug the red
test lead in to "VΩ" terminal and the black test lead into COM
terminal.
(2) Touch the test leads to the test points.
Read measurement values from the LCD
(fig.10)
(3) Press Hz/DUTY key to switch between
frequency and duty ratio measurements.
NOTE:
(I) When the input exceeds 10Vrms, change
to ACV range, and then press Hz/DUTY key
to switch between frequency and duty ratio
measurements.
(2) When measure small signals in the environment with noise
it's better to use a shielded cable.
(3) When testing high voltage circuit, to avoid electric shock,
DO NOT touch the circuit by hands or bodies,
(4) DO NOT input voltage above 250Vrms in this range.
4.10. TEMPERATURE MEASUREMENT
(1) Turn the rotary function switch to the °C position. Plug the
black test lead (negative) of thermocouple into "COM" terminal
and the red test lead (positive) of thermocouple into "VΩ" terminal
(fig.11)
NOTE:
(I) Keep the meter away from high temperature.
Use the thermocouple within the rated
temperature range.
(2) To ensure measurement accuracy, DO NOT
change temperature probe at random need.
(3) DO NOT input voltage in thi srange.

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4.11. Non-Contacnt Voltage (NCV) Detect
WARNING: This function could be affected by different
external interference sources, and then the alarm is activated by
wrong slgnal. The Measurement result is for reference only.
(I) Turn the rotary function switch to "NCV" position. When
the testing circuit is placed above the meter. When the meter
sensor detects voltage, the indicator lights on and the buzzer
alarms (fig.12).
(2) There are 5 ranges for measuring of NCV: 0-50mV,
50-100mV, 100-150mV, 150-200mV, 250mV. For measuring
results of each ranges, "LO", "-", "--", "---", "----", appears on
LCD respectively.
(1) NOTE:Even if there is no voltage indication,
there may be voltage on the circuit. NCVdetector
is not the only way to detect if there is voltage.
(2)Voltage detecting maybe affected by power
socket design, type of insulation and its thickness
and other factor.
(3) When there is voltage input in the meter´s
terminal, the voltage indicator may light on because
of voltage sensor installed in the meter.
(4) Interference sources in the external environment,
such as flashing light, motor, would cause wrong signal
to activate alarm function.
4.12. AUTO POWER OFF FUNCTION
When there is no any operation within 15minutes, the meter will
be automatically powered off and standby mode. To start the
meter again, turn the rotary function switch to OFF position and
then turn it to any other ranges. To cancela uto power off
function, press SELECT key and turn on the power switch at the
same time. The "APO" symbol disappears from the LCD.
5. MAINTENANCE
The meter is a precision instrument. Any changes on the circuit
by the users are not allowed.
(I) Keep away from water, dust. DO NOT drop the meter.
(2) Keep away from environment of high temperature, high
humidity, in flammables and explosives, and strong magnetic
field.
(3) Clean the case of the meter regularly with web cloth and soft
cleaner. DO NOT use corrosive solvents or alcohol such strong
solvents.

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(4) Take out balteries if the meter is meant to be not used for a
longtime.
NOTE:
When the LCD displays " ",please replace the battery in tirne
as per below steps.
(I) Screw off the fixing screws. Remove the battery cover.
(2) Take off the two 1.5V batteries and replace with new ones.
Although any type of 1.5V batteries fit the use, iťs better to use
alkaline batteries for longer time operation.
(3) Screw back the fixing screw sand put back the battery cover.
6. TROUBLE SHOOTlNG
If the meter does not work properly, please check the mete ras
following steps. If the problems remain, please contact repairing
center or local dealers.
Fault Solution
No reading on LCD
•
Turn on the power
•Release the HOLD key
•Replace ballery
signal appears •Replace ballery
Big error Value •Replace ballery
• The specifications are subject to changes without prior notice.
• The content of this manual is regarded as correct. If users find
out any mistakes or omissions, please kindly contact
the manufacturer.
• The manufacturer will not be responsible for accidents
or damages caused by improper operations..
• The functions described in this User Manual shall not be
considered as the reason for any special usages.
2016F.N-V0.1