Victor VC9808 User manual

DIGITAL MULTIMETER OPERATION MANUAL
1. GENERAL
The instrument is a stable and good performance digital multi-meter driven by
battery. It uses the LCD with 26mm-high figure to make the reading clear. Unit
symbol displaying, and the function of backlight and overload protection make
operation is convenient.
The instrument has the function of measuring DCV, ACV, DCA, ACA, resistance,
capacitance, inductance, temperature and frequency, and diode, triode and
continuity test. The instrument takes dual-integral A/D converter as key point, is an
excellent tool.
2. SAFETY NOTES
This series meter, meets the standard of IEC1010. Please read below notes
carefully before operation.
1. Do not input a limited voltage which RMS is over DC 1000V or AC 700V when
measuring voltage.
2. Voltage less than 36V is a safety voltage. When measuring voltage higher than
DC 36V, AC 25V, check the connection and insulation of test leads to avoid electric
shock.
3. Be sure to keep the test leads off the testing points when converting function and
range.
4. Select correct function and range to avoid fault operation.
5. When measuring current, do not input current over 20A.
6. Safety symbols
“” exists high voltage, “ ” GND, “ ” dual Insulation, “ ” must refer to manual,
“” low battery.
3. SPECIFICATION
1). GENERAL
1-1. Displaying: LCD displaying.
1-2. Max. indication: 1999 (3 1/2), auto polarity indication.
1-3. Measuring method: dual slope A/D transfer.
1-4. Sampling rate: approx, 3 times/sec.
1-5. Over range indication: MSD displays “1”/“OL” or “-1”/“OL”.
1-6. Low battery indication. “ ” symbol displays.
1-7. Operation: (0~40)°C, relative humidity <80%.
1-8. Power: one 9V battery (NEDA 1604/6F22 or equivalent).
1-9. Size: 190×88.5×27.5mm.
1-10. Weight: approx. 320g (including a battery).
2). TECHNICAL DATA
2-1. Accuracy: ±(a% ×reading + dgts) at (23 ± 5)°C, relative humidity<75%.
One year guarantee since production date.
2-2. Function:
DCV Resistance ΩTemperature °C
ACV Diode continuity testing Frequency f
DCA Triode hFE Inductance L
ACA Capacitance C Auto power-off
2-3. TECHNICAL DATA
2-3-1. DC Voltage
Range Accuracy Resolution
200mV 0.1mV
2V 1mV
20V 10mV
200V
±(0.5%+3)
100mV
1000 V ±(1.0%+5) 1V
Input resistance: 10MΩfor all ranges.
Overload protection: Range 200mV: DC 250V or AC peak value.
Other ranges: DC 1000V or AC peak value.
2-3-2. ACV Voltage
Range Accuracy Resolution
200mV ±(1.2%+3) 0.1mV
2V 1mV
20V 10mV
200V
±(0.8%+5)
100mV
700V ±(1.2%+5) 1V
Input resistance: It is 1MΩat range 200mV or 2V, and be 10MΩat others.
Overload protection: DC 250V or AC peak value at range 200mV.
DC 1000 V or AC peak value at others.
Frequency response: Range less than 200V: (40~400)Hz.
Range 700V: (40~100)Hz.
Displaying: RMS of sine wave (mean value response).
2-3-3. DCA
Range Accuracy Resolution
2mA ±(0.8%+3) 1uA
20mA ±(0.8%+3) 10uA
200mA ±(1.2%+4) 100uA
20A ±(2.0%+5) 10mA
Max. measuring voltage drop: 200mV.
Max. input current: 20A (within 10 seconds).
Overload protection: 0.2A/ 250V fast-blown fuse, range 20A infused.
2-3-4. ACA
Range Accuracy Resolution
2mA 1uA
20mA ±(1.0%+5) 10uA
200mA ±(2.0%+5) 100uA
20A ±(3.0%+10) 10mA
Max. measuring voltage drop: 200mV.
Max. input current: 20A (within 10 seconds).
Overload protection: 0.2A/250V fused, range 20A infused.
Frequency response: (40~200)Hz.
Displaying: RMS of sine wave (mean value response).
2-3-5. RESISTANCE (Ω)
Range Accuracy Resolution
200Ω±(0.8%+5) 0.1Ω
2kΩ1Ω
20kΩ10Ω
200kΩ100Ω
2MΩ
±(0.8%+3)
1kΩ
20MΩ±(1.0%+l5) 10kΩ
2000MΩ±[5%(reading-10)+20] 1MΩ
Open voltage: less than 3V.
Overload protection: DC 250V or AC peak value.
NOTE: A: At range 200Ω, short-circuit the test leads to measure the wire resistance, then,
subtracts it from the real measurement.
B: At range 200MΩ, when the test leads short circuit, LCD displays 1.0MΩ. In the same way,
the reading is 10MΩwhile the test leads short at range 2000MΩ. It’s normal and doesn’t
affect the accuracy Please deduct the value from the real measurement.
C: The reading be displayed slowly when the measurement is more than 1MΩ.
Please wait it to be stable.
2-3-6. Capacitance
Range Accuracy Resolution
20nF 10pF
200nF 100pF
2uF 1nF
20uF
±(2.5%+20)
10nF
200uF ±(5.0%+5) 100nF
Test frequency: 100Hz.
Overload protection: DC 36V or AC peak value.
2-3-7. Inductance (L)
Range Accuracy Resolution
2mH 1uH
20mH 10uH
200mH 100uH
2H 1mH
20H
±(2.5%+20)
10mH
Test frequency: 100Hz.
Overload protection: DC 36V or AC peak value.
2-3-8. Temperature
Range Accuracy Resolution
(-40~1000)°C ±(0.8%+4) < 400°C
±(1.5%+15) ≥400°C 1°C
K-type thermocouple (banana-shape plug).
2-3-9. Frequency
Range Accuracy Resolution
2kHz 1Hz
20kHz 10Hz
200kHz 100Hz
2000kHz 1kHz
10MHz
±(0.5%+4)
10kHz
Input sensitivity: 1V RMS.
Overload protection: DC 250V or AC peak value (within 10 seconds).

2-3-10. Diode and continuity testing
RANGE Reading Test Condition
Forward voltage drop of diode
Forward DCA is approx.
1mA. backward voltage is
approx. 3V
Buzzer makes a long sound while
resistance is less than (70±20)ΩOpen voltage is approx. 3V
Overload protection: DC 250V or AC peak value.
CAUTION: DO NOT INPUT VOLTAGE AT THIS RANGE!
2-3-11. Transistor hFE DATA TEST
Range Displaying range Testing condition
hFE NPN or PNP 0~1000 Base current is approx. 10uA.
Vce is approx. 3V
4. OPERATION
4-1. Panel description
1. LCD: display the measuring value and unit.
2-1. POWER switch: turn on/off the power.
2-2. PK HOLD key: press it, the max. of presently measured value is held on LCD
and PH symbol displays. Press it again, PH symbol disappears, and the meter is
exited the holding mode.
2-3. DC/AC key: set DC or AC working mode,
2-4. B/L key: turn on/off backlight.
3. hFE hole: to measure hFE of triode.
4. Range knob: to select measuring function
and range.
5. Capacity (Cx) or inductance (Lx) COM.
6. Voltage, resistance and frequency COM.
7. GND.
8. COM for measuring current less than
200mA.
9. COM for measuring current 20A.
SEE THE FIG.
4-2. Voltage measurement
1. Apply the black test lead to “COM” terminal and the red one to V/Ω/Hz terminal.
2. Setup the Knob on a proper range “V”. If the voltage range is unsure beforehand,
please set it on the max., then measure diminishingly to reach a resolute value.
3. Press the DC/AC key down to AC mode to measure AC voltage. Oppositely,
resile the key to DC mode to measure DC voltage.
4. Connecting the test leads reliably with the tested circuit, the voltage value will be
displayed on LCD. While testing a DC voltage, the reading is voltage and polarity of
the point connected by the red lead.
NOTE:
1. While the reading is 1 or OL, the voltage is beyond the present range. Now you
need to set the knob to the higher.
2. Do not input a voltage over DC 1000V or AC 700V. Please keep the test leads off
the circuit while switching the function or range.
3. Be carefully while measuring a high voltage. DO NOT touch the circuit.
4-3. Current measurement
1. Apply the black test lead to “COM” terminal and the red one to “mA” or “20A”
terminal.
2. Set the knob to a proper range A. If the current under tested is unsure
beforehand, please set it on the max., then measure diminishingly to reach a
resolute value.
3. Press the DC/AC key down to AC mode to measure AC current. Oppositely,
resiling the key to DC mode to measure DC current.
4. Connecting the leads to the tested circuit in series, the current value is displayed
on LCD. While testing a DC current, the reading is the value of current and polarity
of the point connected by the red lead.
NOTE:
1. If the LCD displays 1 or OL, it means the current is over range. Now you need to
set the knob to the higher.
2. Max. input current is 200mA or 20A (subject to where the red test lead apply to),
too large current will blow the fuse. Be sure the test is less than 10 seconds. Please
keep the leads off the circuit while switching the function and range knob.
4-4. RESISTANCE MEASUREMENT
1. Apply the black test lead to COM terminal and the red one to V/Ω/Hz terminal.
2. Set the knob to a proper resistance range, and connect the leads crossly with the
resistor under tested.
NOTE:
1. The LCD displays 1 or OL while the resistance is over the selected range. The
knob should be adjusted to a higher range.
2. When input terminal is in open circuit, overload displays.
3. When measuring in line resistor, be sure that the power is off and all capacitors
are released completely,
4. Do not input any volt at resistance range.
5. When measuring value is over 1MΩ, the reading will take a few seconds to be
stable. It’s normal for high resistance measuring.
4-5. CAPACITANCE MEASUREMENT
1. Apply the knob to proper capacitance range, and insert the capacitor under
tested into “Cx” terminal.
2. Connect test leads with the two points of capacitor, be wary of polarity if
necessary.
NOTE:
1. If the capacitance under tested is over the max. value of selected range, LCD
displays 1 or OL, thus, should set the knob to a higher range.
2. It’s normal that there is a remained value on LCD before capacitance
measurement, and it doesn’t affect the measurement.
3. When measuring at large capacitance range, if capacitor is crept badly or broken,
LCD displays a value and it’s unstable.
4. Release the capacitor completely before measuring.
4-6. INDUCTANCE MEASUREMENT
Set the knob to a proper inductance range and insert the inductor to LX terminal.
NOTE:
1. The LCD displays 1 or OL while the tested inductance is over the selected range.
Thus, the knob should be set to a higher range.
2. The inductance may be different due to different resistance on a same inductor.
3. At 2mH range, should make the test leads short and measure the inductance of
wire, then, subtract from real measurement.
4-7. TEMPERATURE MEASUREMENT
Set the knob to °C range, insert the black plug of cold end of thermocouple into mA com and
the red plug to V/Ω/Hz com, put working end into measurement place. Display reading is the
temperature of measurement place in °C.
NOTE:
1. When input terminal is in open circuit, if the ambient temperature is over 18°C, LCD
displays the ambient temperature, If ambient temperature is lower than 18°C, LCD displays
an un-normal temperature.
2. Do not try to change the thermocouple, or, the accuracy cannot be guaranteed.
3. Do not input any volt at a temperature range.
4-8. FREQUENCY MEASUREMENT
1. Apply test leads or shield cable to COM and V/Ω/Hz terminal.
2. Set the knob to frequency range, connect test leads or cable crossly to signal source or
tested load.
NOTE:
1. When input over 10V RMS, reading is workable but accuracy is not guaranteed.
2. It is better to use shield cable to measure small signal at noisy environment.
3. Be careful when measuring high volt circuit.
4. Do not input voltage over DC 250V or AC peak value.
5. Auto range is from 2kHz to 10MHz.
4-9. TRANSISTOR hFE
1. Set the knob to hFE range.
2. Verify the transistor under tested is NPN or PNP, insert emitter, base and collector to
proper jack.
4-10. DIODE AND CONTINUITY TEST
1. Apply the black test lead to “COM” terminal and the red one to V/Ω/Hz terminal the polarity
of red lead is “+”).
2. Set the knob to range, connect test leads with the diode under tested, the red test
connect to diode positive polarity, the reading is the approx. value of diode forward volt drop.
3. Apply test leads to two points of tested circuit, if the inner buzzer sounds, the resistance is
less than (70±20)Ω.
4-11. PEAK VALUE HOLD
Press down the key, the max. of presently measured value is held on LCD. Press up the key
and the function is cancelled.
4-12. AUTO POWER OFF
The meter will be into sleeping mode when it works for (20±10) minutes. Press “POWER”
key twice to restart the power.
5. MAINTENANCE
Do not try to modify the electric circuit.
5-1. Keep the meter away from water, dust and shock.
5-2. Do not store and operate the meter under the condition of high temperature, high
humidity, combustible, explosive and strong magnetic place.
5-3. Wipe the case with a damp cloth and detergent, do not use abrasives and alcohol.
5-4. If do not operate for a long time, should take out the battery to avoid leakage.
5-4-1. When “ ” signal displays, should replace the battery following the steps.
5-4-1-1. Unlock the button and remove the battery case, (see fig.1).
5-4-1-2. Take out the old battery and replace the new one. It’s better to use alkaline battery
for longer life.
5-4-1-3. Fit on the battery case and lock the button (see fig.2).
zHow to remove the battery case
Unlock the button according to indication on the case, i.e. switch on both sides counter-
clockwise, when and signal on left side are at the same direction, it’s unlocked ; when
and signal on right side are at the same direction, it’s unlocked . When the signals
are the same as fig.1, the battery case can be removed.
Fig.1
zHow to fit on the battery case
Lock the button according to the indication on the case, i.e. switch two on both sides
clockwise, when the signals are the same as fig.2, the battery case is fit on.
Fig.2
5-4-2. FUSE REPLACEMENT: Please use the same size fuse as replacement.
6. If the meter does not work properly, check the meter as following:
Fault Solution
No reading on LCD
turn on the power
set the HOLD key to acorrect mode
Replace battery
Signal appears Replace battery
NO current or temperature input Replace fuse
Big error Value Replace battery
SPE-V9808+-2010X