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Victor 88C User manual

VICTOR 88C
User
’
s Manual for VICTOR 88C Digital
Multimeter
Contents
Contents
Contents
Contents
I. Summary …………………………………………
II. For purchasers of this multimeter ……………
III. Unpacking inspection …………………………
IV.
Features ………………………………………
V.
Operation method ……………………………
VI. Device maintenance ……………… …………
VII. Trouble shoot …………………………………
I.
I.
I.
I.
Summary
Summary
Summary
Summary
This series product is a stable and battery-driven 3 1/2 digital
multimeter with high reliability. It adopts LCD screen with character
height of 28mm; with functions including unit sign/backlight and
overload protection, it is easy to use.
This series of device can be used to measure DCV,
ACV,
DC,
AC, resistance, capacitance, inductance, diode, triode, open circuit,
temperature and frequency, as well as hold peak value. As an
instrument with excellent performance it adopts double integr al A/D
converter as its core.
II.
II.
II.
II.
For
For
For
For
purchasers
purchasers
purchasers
purchasers
of
of
of
of
this
this
this
this
multimeter
multimeter
multimeter
multimeter
1.
1.
1.
1.
Safety
Safety
Safety
Safety
notice
notice
notice
notice
This series of device is designed according to IEC1010
standard (safety standard issued by International Electrotechnical
Committee). Please read these safety notices before using it.
1-1. Never input DC higher than 1000V or AC higher than 750V
virtual voltage as measuring voltage;
1-2. The voltage lower than 36V is safe. Please confirm the
earthing, connection and isolation of pencils to avoid electric shock
when measuring the voltage of DC higher than 36V or AC higher
than 25V;
1-3. Pencils should be away from test points when switching
function or range;
1-4. Select correct function and range and beware of miss-
operation.
You
may still be careful to ensure the safety even the
device has range protection functions.
1-5. Never input current higher than 20A when measuring current;
1-6. Introduction for safety sign
“ “ Dangerous voltage existing; “ ” Earthing; “ ” Double
isolation; “ ” Shall refer to the user
’
s manual; ” ” Low battery.
III.
III.
III.
III.
Unpacking
Unpacking
Unpacking
Unpacking
inspection
inspection
inspection
inspection
Open the package to check if all parts and accessories are all right
in the box
1. Multimeter 1
2. Battery (9V) 1
3. Leather case 1
4. Vibration proof sheath 1
5. Acceptance certificate 1
6. Crocodile clip 1 pair
7. Temperature probe (banana type) 1 pair
8. T esting accessory 1
9. Pencil (20A) 1 pair
10. User
’
s manual 1
IV.
IV.
IV.
IV.
Features
Features
Features
Features
1.
1.
1.
1.
General
General
General
General
features
features
features
features
1-1. Display mode: LCD;
1-2. Max display: 1999 (3 1/2) digits automatic polarity display;
1-3. Measurement method: double integral A/D conversion;
1-4. Sampling rate: about 3 time per second;
1-5. Over-range display: the highest digit displays “ OL ” or “ -OL ”
1-6. Low voltage display :” ” ;
1-7. Working environment: (0 ~40) ℃
,
relative humidity: <80%;
1-8. Power supply: one 9V battery (6F22 or equivalent model);
1-9. Dimension: 189mm * 97mm * 35mm
(
length*width*height);
1-10. Weight: about 400g (including 9V battery);
2.
2.
2.
2.
Technical
Technical
Technical
Technical
features
features
features
features
2-1. Accuracy: ± (a% × reading data + character number), ensure in
accuracy environment temperature:
(23 ± 5) ℃
,
relative humidity <75%, and the calibration warranty
period lasts for one year from the date of leaving the factory.
2-2. Performance ( ▲ indicates the function is available for this
model)
2-3. T echnical index
2-3-1.
2-3-1.
2-3-1.
2-3-1.
DCV
DCV
DCV
DCV
Input impedance: All range is10M Ω ;
Over load protection: 250V DC or 205 V AC peak value for range
200mV; 1000V DC or 1000V AC peak value for other.
2-3-2.
2-3-2.
2-3-2.
2-3-2.
ACV
ACV
ACV
ACV
Input impedance: All range is10M Ω ;
Over load protection: 250V DC or 205 V AC peak value for range
200mV; 1000V DC or 1000V AC peak value for other.
Frequency response: 40~400Hz for range under 200V; 40~100Hz
for range 750V;
Display: Sine wave virtual value (AVG value response).
2-3-3.
2-3-3.
2-3-3.
2-3-3.
DCA
DCA
DCA
DCA
MAX measurement voltage drop: 200mV;
Model
Function
VICTOR 88C
DCV
▲
ACV
▲
DCA
▲
ACA
▲
Resistance Ω
▲
Diode/ Open circuit
▲
Triode hFE
▲
Capacitance C
▲
T emperature ℃
▲
Frequency f
▲
Inductance L
▲
Auto power off
▲
Backlight
▲
Peak value holding
▲
Range
Accuracy
Resolution
200mV
± (0.5%+3)
100uV
2V
1mV
20V
10mV
200V
100mV
1000V
± (1.0%+5)
1V
Range
Accuracy
Resolution
200mV
± (1.2%+3)
100uV
2V
± (0.8%+5)
1mV
20V
10mV
200V
100mV
750V
750V
1V
Range
Accuracy
Resolution
2mA
± (0.8%+3)
1uA
20mA
10uA
200mA
± (1.2%+4)
100uA
20A
± (2.0%+5)
10mA
Max input current: 20A (no more than 10 seconds);
Over load protection: 0.2A / 250V self-healing fuse for ranges under
200mA, 12A / 250V quick acting fuse for range 20A.
2-3-4.
2-3-4.
2-3-4.
2-3-4.
ACA
ACA
ACA
ACA
MAX measurement voltage drop: 200mV;
Max input current: 20A (no more than 10 seconds);
Over load protection: 0.2A / 250V self-healing fuse for ranges under
200mA, 12A / 250V quick acting fuse for range 20A.
Frequency response: 40~200Hz;
Display: Sine wave virtual value (AVG value response).
2-3-5.
2-3-5.
2-3-5.
2-3-5.
Resistance
Resistance
Resistance
Resistance
(
(
(
(
Ω
Ω
Ω
Ω
)
)
)
)
Open circuit voltage: lower than 3V;
Over load protection: 250V DC or AC peak value;
Caution: a) If in range 200 Ω
,
please short pencils and measure
lead resistance, and then subtract the resistance from the
value measured.
b) It is normal to show 10M Ω when pencils shorted in range
2000M Ω
,
it will not effect the accuracy and shall be subtracted
from the value measured. For example: The object resistance
is 1000M Ω
,
the reading value is 1010M Ω
,
then the correct
value shall be 1010 – 10 = 1000M Ω .
c) Lagged showing of value is normal when measuring
resistance higher than 1M Ω . Please wait until the display is
stable.
2-3-6.
2-3-6.
2-3-6.
2-3-6.
Capacitance
Capacitance
Capacitance
Capacitance
(C)
(C)
(C)
(C)
Range
Accuracy
Resolution
2mA
± (1.0%+5)
1uA
20mA
10uA
200mA
± (2.0%+5)
100uA
20A
± (3.0%+10)
10mA
Range
Accuracy
Resolution
200 Ω
± (0.8%+5)
0.1 Ω
2k Ω
± (0.8%+3)
1 Ω
20k Ω
10 Ω
200k Ω
100 Ω
2M Ω
1k Ω
20M Ω
± (1.0%+15)
10k Ω
2000M Ω
± [5%( 读数 – 10 )+ 20]
1M Ω
Range
Accuracy
Resolution
20nF
± (2.5%+20)
10pF
200nF
100pF
2uF
1nF
T esting frequency: 100Hz;
Over load protection: 36V DC or AC peak value;
2-3-7.
2-3-7.
2-3-7.
2-3-7.
Inductance
Inductance
Inductance
Inductance
(L)
(L)
(L)
(L)
T esting frequency: 100Hz;
Over load protection: 36V DC or AC peak value;
2-3-8. T emperature ( ℃)
Thermocouple (plug of banana type).
2-3-9.
2-3-9.
2-3-9.
2-3-9.
Frequency
Frequency
Frequency
Frequency
(f)
(f)
(f)
(f)
Input sensitivity: higher than 3.5V V
P-P
;
Over load protection: 250V DC or AC peak value(less than 10
seconds);
2-3-10.
2-3-10.
2-3-10.
2-3-10.
Diode
Diode
Diode
Diode
and
and
and
and
open
open
open
open
circuit
circuit
circuit
circuit
test
test
test
test
Over load protection: 250V DC or AC peak value;
Warning: Never input voltage in this range.
2-3-11 Measuring triode
’
s hFE parameter
20uF
10nF
200uF
± (5.0%+5)
100nF
Range
Accuracy
Resolution
2mH
± ( 2.5%+20)
1uH
20mH
10uH
200mH
100uH
2H
1mH
20H
10mH
Range
Accuracy
Resolution
(- 2 0 ~ 1000) ℃
± (1.0%+4) < 400 ℃
± (1.5%+15) ≥ 400 ℃
1℃
Range
Accuracy
Resoluti
on
2kHz
± (0.5%+4)
1Hz
20kHz
10Hz
200kHz
100Hz
2000kHz
1KHz
10MHz
10KHz
Range
Value displayed
Test
condition
Diode forward voltage
drop (Unit: mV)
Forward DC: about
1mA, reverse
voltage: about
3V.
Buzzer sounds
continuously, resistance
between two test points
is less than 70 Ω± 20 Ω .
Open circuit voltage
is about
3V.
Range
Display
range
Test
condition
hFE , NPN or PNP
0 ~ 1000
base electrode current is
about 10uA, and Vce is
about 3V
V.
V.
V.
V.
Operation
Operation
Operation
Operation
method
method
method
method
5-1.
5-1.
5-1.
5-1.
Operation
Operation
Operation
Operation
panel
panel
panel
panel
introduction
introduction
introduction
introduction
1. LCD: display the measured value and the unit;
2. Function keys
2-1. Power switch: turn on /turn off power;
2-2. PK HOLD: Pressing this key will hold all max value measured
in the screen showing sign “ PH ” ; press again, "PH" will disappear
and exit the status of peak value holding.
2-3. B/L switch to enable backlight which will be turned off auto
after about 5 seconds.
2-4. DC/AC: select DC/AC working mode.
3. Rotary switch: to change measurement function and range;
4. Jack for measurement of voltage, resistance and frequency;
5. Common ground: positive input for capacitance (Cx), inductance
(Lx), triode and temperature.
6. Positive jack for current lower than 200mA; negative input for
capacitance (Cx), inductance (Lx), triode and temperature.
7. Jack for current 20A.
Please refer to the figure:
5-2.
5-2.
5-2.
5-2.
Voltage
Voltage
Voltage
Voltage
measurement
measurement
measurement
measurement
1. Insert the black pencil into the “ COM ” jack, and the red one into
the “ V/ Ω /Hz ” jack;
2. Turn the switch to position “ V ” . If the level of voltage to be
measured is unknown then select the biggest range and then
decrease the range step by step until getting the value with the
highest resolution.
3. Popup the key “ DC/AC ” to enter into DC mode if measuring DC;
Press down the key “ DC/AC ” to set into AC mode.
4. The screen will show the voltage measured if touch the testing
point using the pencils; the point touched by the red pencil is in
positive voltage if the value showed is positive.
Notice:
1. As showed, “ OL ” indicates the range is over and shall switch to a
higher range.
2. The voltage to be tested shall not over DC 1000V or AC 750V .
The pencils shall be away from the testing point as switching
functions or ranges.
3. When measuring high voltage circuit, any parts of your body
should not touch the high voltage circuit, otherwise it may hurt your
body.
5-3.
5-3.
5-3.
5-3.
Current
Current
Current
Current
measurement
measurement
measurement
measurement
1. Insert the black pencil into the “ COM ” jack, and the red one into
the “ mA ” or “ 20A ” jack.
2. Turn the switch to position “ A ” . If the level of current to be
measured is unknown then select the biggest range and then
decrease the range step by step until getting the value with the
highest resolution.
3. Popup the key “ DC/AC ” to enter into DC mode if measuring DC;
press down the key “ DC/AC ” to set into AC mode.
4. The screen will show the value of current measured if connect in
parallel the pencil to the circuit to be tested; the point touched by
the red pencil is in positive voltage if the value showed is positive.
Notice:
Notice:
Notice:
Notice:
1. As showed, “ OL ” indicates the range is over and shall switch to a
higher range.
2. The input in “ mA ” jack shall not over 200mA and “ 20A ” not over
20A (less than 10 seconds of testing duration) as measuring
current; the pencils shall be away from testing points as switching
function or range.
5-4
5-4
5-4
5-4
Resistance
Resistance
Resistance
Resistance
measurement
measurement
measurement
measurement
1. Insert the black pencil into the “ COM ” jack, and the red one into
the “ V/ Ω /Hz ” jack;
2. Turn the range switch to resistance position, then bride two
pencils at the two ends of the resistor.
Notice:
1. "OL ” will be displayed in screen if the resistance is over the range ,
then you shall increase the range by one step;
2. When input is open circuit, it will display status of overload;
3. When measuring resistance on line, ensure that all power of
circuit tested are turn down and all capacitor are discharged
completely;
4. Never input voltage if in resistance measurement mode!
5. It normal for resistance higher than 1M Ω that the reading data is
not stable for the first several seconds;
5-5
5-5
5-5
5-5
Capacitance
Capacitance
Capacitance
Capacitance
measurement
measurement
measurement
measurement
1. Switch to a proper range, and insert pencils into “ mA ” and “ com ”
jack.
2. Connect the two pencils in parallel to the two ends of the
capacitor. Please pay attention to the polarity, as the “ com ” for
positive and “ mA ” for negative.
Notice:
1. If capacitance exceeds the range selected, “ OL ” will be displayed
in screen ,then you shall increase the range by one step.
2. The LCD may show some rudimental digits upon the starting of
capacitance measurement. It
’
s normal and will not affect the
testing result;
3. If there is serious creepage or capacitor broken down in high
capacitance range, the digits showed will be random and
unstable.
4. Please discharge capacitor completely to avoid device damage
before measuring capacitance.
5-6.
5-6.
5-6.
5-6.
Inductance
Inductance
Inductance
Inductance
measurement
measurement
measurement
measurement
1. Switch to a proper range, and insert pencils into “ mA ” and “ com ”
jack.
2. Bridge the pencils on the two ends of inductor.
Notice:
1. If inductance exceeds the range selected, “ OL ” will be displayed
in screen ,then you shall increase the range by one step.
2. The inductance value measured for identical inductor may be
different if there is different impendence;
3. If in range 2mH, please short pencils and measure lead
inductance, and then subtract the inductance from the value
measured.
4. Avoid measuring small inductor in high range, or the accuracy is
not guaranteed.
5-7.
5-7.
5-7.
5-7.
Temperature
Temperature
Temperature
Temperature
measurement
measurement
measurement
measurement
Turn range switch to “ ℃”
,
insert the cathode(black pin) of
cold end (free end) of thermocouple into “ mA ” jack, anode (red
pin) into “ COM ” jack, put the working end (temperature
measurement end) of thermocouple on the surface or inside the
object to be tes ted. Then you can read temperature from the
screen, and the data is in centigrade.
Notice:
Notice:
Notice:
Notice:
1. As the input end is open, it will show environment temperature if
the operation temperature is higher than 18
18
18
18
℃
,
or normal
temperature if lower than 18
18
18
18
℃.
2.
2.
2.
2.
Please
Please
Please
Please
never
never
never
never
replace
replace
replace
replace
temperature
temperature
temperature
temperature
sensor,
sensor,
sensor,
sensor,
or
or
or
or
the
the
the
the
accuracy
accuracy
accuracy
accuracy
is
is
is
is
not
not
not
not
guaranteed;
guaranteed;
guaranteed;
guaranteed;
3.
3.
3.
3.
Never
Never
Never
Never
input
input
input
input
voltage
voltage
voltage
voltage
if
if
if
if
in
in
in
in
temperature
temperature
temperature
temperature
mode.
mode.
mode.
mode.
5-8.
5-8.
5-8.
5-8.
Frequency
Frequency
Frequency
Frequency
measurement
measurement
measurement
measurement
1. Insert pencils or shielded cable into “ COM ” and “ V/ Ω /Hz “ jack;
2. Turn range switch to frequency position and bridge pencils or
cables over the signal source or load tested.
Notice:
1. The device can still work if the input is higher than 10V virtual
value, but the accuracy is not guaranteed;
2. In noise environment, you'd better use shield cable to measure
small signal;
3. When measuring high voltage circuit, any parts of your body
should not touch the high voltage circuit, otherwise it may
hurt your body.
4. Never input voltage higher than 250V DC or AC peak value,
otherwise it may damage your device.
5-9.
5-9.
5-9.
5-9.
Triode
Triode
Triode
Triode
hFE
hFE
hFE
hFE
1. Turn the range switch to “ hFE ” position;
2. Insert testing accessory into “ mA ” and “ com ” jack. Please pay
attention to the polarity, as the “ com ” for positive and “ mA ” for
negative.
3.
To
determine the triode's type, NPN or
PNP,
insert the emitting,
base and collector electrode into the corresponding jacks in
testing accessory.
5-10.
5-10.
5-10.
5-10.
Diode
Diode
Diode
Diode
and
and
and
and
open
open
open
open
circuit
circuit
circuit
circuit
test
test
test
test
1. Insert the black pencil into “ COM “ jack, and the red one into the
“ V/ Ω /Hz “ jack (Notice: the red pencil is anode);
2. Turn the range switch to position “ ”
,
connect pencils in
parallel to the diode tested, with the red pencil to the anode and
the black to cathode, then the reading value will be approximate
forward voltage drop of the diode;
3. Connect pencils to two points of the circuit to be tested, if buzzer
sounds, then the resistance between the two points is lower
than (70 ± 20) Ω .
5-11.
5-11.
5-11.
5-11.
Peak
Peak
Peak
Peak
value
value
value
value
holding
holding
holding
holding
Press HOLD, the peak value of current data will be keep
displaying in screen; press again to cancel this function.
5-12.
5-12.
5-12.
5-12.
Auto
Auto
Auto
Auto
power
power
power
power
off
off
off
off
After about (20 ± 10)minutes device not being used, it will be
powered off automatically and enter into dormant status, and
press “ POWER ” again for two times to turn on power.
5-13.
5-13.
5-13.
5-13.
Backlight
Backlight
Backlight
Backlight
Press “ B/L ” key to turn on backlight. After 20 seconds, the
backlight will be turn down automatically.
Notice:
When backlight is bright, working current becomes higher, and
it will short the service life of battery and the error for some other
functions will increase.
VI.
VI.
VI.
VI.
Device
Device
Device
Device
maintenance
maintenance
maintenance
maintenance
This series of device is a kind of precise instrument; please do
not change the internal circuit by your self.
6-1. Pay attention to the waterproof, dustproof and breakproof of
the device;
6-2. Please do not store or use it in environment of high
temperature, high humidity, high flammability or strong magnetic .
6-3. Please clear the device using wet cloth and soft detergent, and
abrasive and drastic solvent such as alcohol are forbidden.
6-4. Please take out battery to prevent device from being eroded by
battery weeping if the device will not be used for a long time;
5-4-1. Be care of the status of batteries. When sign “ “ is
showed in screen, please replace batteries.
6-4-1-1. Remove vibration proof sheath, screw out nut that fixing
battery lid, and remove battery cap;
6-4-1-2.
Take
off 9V batteries, replace with new one. It is
recommended to use alkaline battery for long time of operation;
even any 9V battery is adoptable.
6-4-1-3. Close the battery cap and tighten the screws.(refer to
Figure 2)
6-4-1-4.
Take
on vibration proof sheath.
6-4-2. Replacing fuse
Please replace fuse with an identical one if necessary.
VII.
VII.
VII.
VII.
Trouble
Trouble
Trouble
Trouble
shooting
shooting
shooting
shooting
If you device can not work normally, the methods bellow
may help you to solve general problems. If these methods do
not work, please contact service center or dealer.
We
We
We
We
will
will
will
will
not
not
not
not
give
give
give
give
a
a
a
a
further
further
further
further
notice
notice
notice
notice
for
for
for
for
any
any
any
any
change
change
change
change
of
of
of
of
this
this
this
this
manual.
manual.
manual.
manual.
We
We
We
We
have
have
have
have
tried
tried
tried
tried
our
our
our
our
best
best
best
best
to
to
to
to
confirm
confirm
confirm
confirm
the
the
the
the
correction
correction
correction
correction
of
of
of
of
this
this
this
this
manual
manual
manual
manual
’
’
’
’
s
s
s
s
content.
content.
content.
content.
If
If
If
If
you
you
you
you
find
find
find
find
any
any
any
any
mistake
mistake
mistake
mistake
or
or
or
or
omit,
omit,
omit,
omit,
please
please
please
please
contact
contact
contact
contact
us.
us.
us.
us.
We
We
We
We
will
will
will
will
not
not
not
not
be
be
be
be
responsible
responsible
responsible
responsible
for
for
for
for
any
any
any
any
accidents
accidents
accidents
accidents
or
or
or
or
damages
damages
damages
damages
caused
caused
caused
caused
by
by
by
by
miss-
miss-
miss-
miss-
operation.
operation.
operation.
operation.
Functions
Functions
Functions
Functions
described
described
described
described
in
in
in
in
this
this
this
this
book
book
book
book
can
can
can
can
not
not
not
not
be
be
be
be
used
used
used
used
as
as
as
as
reason
reason
reason
reason
for
for
for
for
special
special
special
special
purpose.
purpose.
purpose.
purpose.
MB -0088 -30
Fault
symptom
Inspection
Inspection
Inspection
Inspection
area
area
area
area
and
and
and
and
method
method
method
method
No display

Power is not on

Holding switch;

Replacing battery
sign
appears

Replacing battery
No current
input

Replacing fuse
Too
great
error
displayed

Replacing battery

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