Victor VC97 - User Manual

OPERATION MANUAL
The meter is a high performance, high accuracy, 3 3/4-digit, 32mm digit high by
LCD displaying meter. The function includes DCV, ACV, DCA, ACA,
resistance ,capacitance, frequency, temperature，duty cycle measurement, triode,
diode and continuity test. Also with the function of unit signal displaying ,relative
value measuring ,auto range/ manual range switch ,auto power off and warning
function etc.
SAFETY NOTES
The meter meets with IEC1010standard. Read the notes before operating.
①Before measuring, check the test leads carefully.
②Do not input a value over allowable limited when measuring to avoid electric
shock meter damage.
③Be careful when measuring voltage over DCV60V, ACV40V.
④To select correct function.
⑤The test leads should be taken away from the testing point when changing
function.
⑥Never take measurement when the test leads are in current terminal.
⑦Do not try to modify the circuit.
⑧Safety symbols
“ “ dangerous voltage
“ “ GND
“ “ dual insulation
“ “ refer to the operation manual
“ “ low battery
SPECIFICATION
1. General
1-1,Display: 3 3/4digit LCD with a max readings of 3999, Automatic
negative polarity indication.,
1-2.Measuring method: Dual-slop integrating A/D converter system.
1-3.Sampling rate: Approx. 3times/second.
1-4 Over range indication: “ OL” display.
1-5.Low battery: The “ ”is display.
1-6.Operating environment : Temperature (0℃ to 40℃), humidity<80%RH.
1-7.Storage environment: Temperature (-10℃ to 50℃), humidity<80%RH.
1-8.Power: 2pcs 1.5V AAA 7# battery.
1-9.Dimension: 185(L)X93(W)X35(H)mm.
1-10Weight: Approx. 290g(including battery).
1-11.Accessories: manual, gift box ,holster ,TP01 temperature probe, test leads and
2pcs 1.5V battery.
2. Technical
2.1 Accuracy: ±(a% × reading + digits) at 23±5℃,<75%RH.
2.2 DCV
Range
Accuracy
Resolution
400mV
±(0.5%+4d)
0.1mV
4V
1 mV
40V
10 mV
400V
100 mV
1000V
±(1.0%+4d)
1V
Input impedance: 400mv range>40MΩ,other range is 10MΩ.
Overload protection: 1000V DC or 700V AC peak value
2.3 ACV
Range
Accuracy
Resolution
400mV
±(1.5%+6d)
0.1mV
4V
±(0.8%+6d)
1 mV
40V
10 mV
400V
100 mV
750V
±(1.0%+6)
1V
Input impedance: 400mv range>40MΩ,other range is 10MΩ.
Overload protection: 1000V DC or 700V AC peak value
Frequency response: 750V range: 40~100Hz, other range: 40~400Hz
Displaying: sinewave RMS(average value response)
2.4 DCA
Range
Accuracy
Resolution
400uA
±(1.0%+5)
0.1μA
4000uA
1μA
40mA
10μA
400mA
100μA
4A
1mA
20A
±(2.0%+5)
10mA
Max. measuring volt drop: 400mV under mA range, 200mV under A
range.
Max. input current: 20A(less than 15sec.)
Overload protection: 0.5A/250V fuse, 13A/250V fuse.
2.5 ACA
Range
Accuracy
Resolution
400uA
±(1.5%+5)
0.1μA
4000uA
1μA
40mA
10μA
400mA
100μA
4A
1mA
20A
±(2.0%+10)
10mA
Max. measuring volt drop: 400mV under mA range, 200mV under A
range.
Max. input current: 20A(less than 15sec.)
Overload protection: 0.5A/250V fuse, 13A/250V fuse.
Frequency response: 40~100Hz under 10A range, 40～400Hz at other
range.
2.6 RESISTANCE
Range
Accuracy
Resolution
400Ω
±(0.8%+5)
0.1Ω
4kΩ
±(0.8%+1)
1Ω

Summary

Operation Manual

Safety Notes

General precautions and essential safety instructions for operating the meter.

Specifications

General Specifications

Details about display, measuring method, sampling rate, and operating environment.

Technical Specifications - DCV

Accuracy, range, overload protection, and input impedance for DC Voltage measurements.

Technical Specifications - ACV

Accuracy, range, overload protection, frequency response for AC Voltage measurements.

Technical Specifications - DCA

Accuracy, range, overload protection, and input current details for DC Current measurements.

Technical Specifications - ACA

Accuracy, range, overload protection, and frequency response for AC Current measurements.

Technical Specifications - Resistance

Range, accuracy, and resolution for Resistance measurements.

Technical Specifications - Capacitance

Range, accuracy, and resolution for Capacitance measurements, including precautions.

Technical Specifications - Frequency

Range, accuracy, and resolution for Frequency measurements.

Technical Specifications - hFE

Test conditions for measuring transistor hFE (current gain).

Technical Specifications - Diode and Continuity Test

Details for diode forward voltage drop and continuity test buzzer.

Technical Specifications - Temperature

Accuracy and resolution for Temperature measurements using a K-type thermocouple.

Operation and Measurement Procedures

Panel Description

Identification of meter controls, display, and jacks.

DCV Measurement

Step-by-step guide for measuring DC voltage.

ACV Measurement

Step-by-step guide for measuring AC voltage.

DCA Measurement

Step-by-step guide for measuring DC current.

ACA Measurement

Step-by-step guide for measuring AC current.

Resistance Measurement

Steps for measuring resistance, including short-circuiting and using REL.

Capacitance Measurement

Procedure for measuring capacitance using the Cx socket and REL key.

Frequency Measurement

Steps for measuring frequency, noting auto-range and signal measurement.

hFE Measurement

Procedure for measuring transistor current gain (hFE).

Diode and Continuity Test

Instructions for testing diodes and checking continuity with buzzer.

Temperature Measurement

Guide for measuring temperature using the 'Temp' jack and thermocouple.

Data Hold Function

How to use the HOLD key to freeze and cancel readings on the LCD.

Auto Power Off Function

Information on the auto power off feature and how to disable it.

Maintenance and Troubleshooting

Maintenance Precautions

Guidelines for care, cleaning, battery replacement, and fuse replacement.

Troubleshooting Guide

Solutions for common issues like 'No Displaying' or 'BIG ERROR'.

Overview

1. Functions
2. Important Technical Specifications
3. General
4. DC Voltage (2.2 DCV)
5. AC Voltage (2.3 ACV)
6. DC Current (2.4 DCA)
7. AC Current (2.5 ACA)
8. Resistance (2.6 RESISTANCE)
9. Capacitance (2.7 CAPACITANCE)
10. Frequency (2.8 FREQUENCY)
11. hFE (2.9 hFE)
12. Diode and Continuity Test (2.10 DIODE AND CONTINUITY TEST)
13. Temperature (2.11 TEMP.)
14. Usage Features
15. Safety Notes
16. Operation
17. Measurement Procedures (General Notes)
18. Auto Power Off (4-13 Auto power off)
19. Maintenance Features
20. Troubleshooting (If meter does not work properly)
21. Important Notes

This document describes a high-performance, high-accuracy 3 3/4-digit multimeter with a 32mm digit LCD display, capable of showing a maximum reading of 3999. It features automatic negative polarity indication and uses a dual-slope integrating A/D converter system for measurements, with a sampling rate of approximately 3 times per second. An "OL" display indicates an over-range condition, and a battery symbol appears when the battery is low.

Functions:

The meter offers a wide range of measurement functions including:

• DC Voltage (DCV)
• AC Voltage (ACV)
• DC Current (DCA)
• AC Current (ACA)
• Resistance
• Capacitance
• Frequency
• Temperature
• Duty Cycle
• Triode (hFE)
• Diode Test
• Continuity Test

It also includes features such as unit signal displaying, relative value measurement, auto-range/manual-range switching, auto power-off, and warning functions.

Important Technical Specifications:

General:

• Display: 3 3/4-digit LCD, max reading 3999.
• Measuring Method: Dual-slope integrating A/D converter system.
• Sampling Rate: Approx. 3 times/second.
• Over Range Indication: "OL".
• Low Battery Indication: Battery symbol.
• Operating Environment: Temperature 0°C to 40°C, humidity <80%RH.
• Storage Environment: Temperature -10°C to 50°C, humidity <80%RH.
• Power: 2pcs 1.5V AAA (7#) battery.
• Dimensions: 185(L) x 93(W) x 35(H)mm.
• Weight: Approx. 290g (including battery).
• Accessories: Manual, gift box, holster, TP01 temperature probe, test leads, 2pcs 1.5V battery.
• Accuracy: ±(a% × reading + digits) at 23±5°C, <75%RH.

DC Voltage (2.2 DCV):

• Ranges: 400mV, 4V, 40V, 400V, 1000V.
• Accuracy: ±(0.5%+4d) for 400mV to 400V, ±(1.0%+4d) for 1000V.
• Resolution: 0.1mV to 1V.
• Input Impedance: >40MΩ for 400mV range, 10MΩ for other ranges.
• Overload Protection: 1000V DC or 700V AC peak value.

AC Voltage (2.3 ACV):

• Ranges: 400mV, 4V, 40V, 400V, 750V.
• Accuracy: ±(1.5%+6d) for 400mV, ±(0.8%+6d) for 4V to 400V, ±(1.0%+6) for 750V.
• Resolution: 0.1mV to 1V.
• Input Impedance: >40MΩ for 400mV range, 10MΩ for other ranges.
• Overload Protection: 1000V DC or 700V AC peak value.
• Frequency Response: 40-100Hz for 750V range, 40-400Hz for other ranges.
• Displaying: Sinewave RMS (average value response).

DC Current (2.4 DCA):

• Ranges: 400uA, 4000uA, 40mA, 400mA, 4A, 20A.
• Accuracy: ±(1.0%+5) for 400uA, ±(1.0%+5) for 4000uA, ±(1.2%+5) for 40mA, ±(1.5%+5) for 400mA, ±(1.5%+5) for 4A, ±(2.0%+5) for 20A.
• Resolution: 0.1μA to 10mA.
• Max. Measuring Volt Drop: 400mV under mA range, 200mV under A range.
• Max. Input Current: 20A (less than 15sec.).
• Overload Protection: 0.5A/250V fuse, 13A/250V fuse.

AC Current (2.5 ACA):

• Ranges: 400uA, 4000uA, 40mA, 400mA, 4A, 20A.
• Accuracy: ±(1.5%+5) for 400uA to 400mA, ±(2.0%+10) for 4A and 20A.
• Resolution: 0.1μA to 10mA.
• Max. Measuring Volt Drop: 400mV under mA range, 200mV under A range.
• Max. Input Current: 20A (less than 15sec.).
• Overload Protection: 0.5A/250V fuse, 13A/250V fuse.
• Frequency Response: 40-100Hz under 10A range, 40-400Hz at other ranges.

Resistance (2.6 RESISTANCE):

• Ranges: 400Ω, 4KΩ, 40KΩ, 400KΩ, 4MΩ, 40MΩ.
• Accuracy: ±(0.8%+5) for 400Ω, ±(0.8%+1) for 4KΩ to 4MΩ, ±(1.2%+5) for 40MΩ.
• Resolution: 0.1Ω to 10KΩ.
• Open Circuit Voltage: 400mV.
• Overload Protection: 250V DC/AC peak value.

Capacitance (2.7 CAPACITANCE):

• Ranges: 4nF, 40nF, 400nF, 4µF, 40µF, 200µF.
• Accuracy: ±(2.5%+6) for 4nF, ±(3.5%+8) for 40nF to 4µF, ±(5.0%+8) for 40µF and 200µF.
• Resolution: 1pF to 100nF.
• Overload Protection: 250V DC/AC peak value.
• Note: Do not input any voltage at this range. Capacitors must be completely released and power turned off before measurement.

Frequency (2.8 FREQUENCY):

• Ranges: 10Hz, 100Hz, 1000Hz, 10kHz, 100kHz, 1MHz, 10MHz.
• Accuracy: ±(0.5%+4).
• Resolution: 0.001Hz to 100Hz.
• Input Sensor: 0.7V.
• Overload Protection: 250V DC/AC peak value.

hFE (2.9 hFE):

• Range: 0-1000 for NPN or PNP.
• Test Condition: Current is 15uA, Vce is approx. 4.5V.

Diode and Continuity Test (2.10 DIODE AND CONTINUITY TEST):

• Diode Forward Volt Drop: Approx. 0.5mA, reversed voltage approx. 1.5V.
• Continuity Buzzer: Sounds if resistance is less than (70±10)Ω.
• Open Circuit Voltage: 0.5V.
• Overload Protection: 250V DC/AC peak value.
• Note: Do not input any voltage at this range.

Temperature (2.11 TEMP.):

• Ranges: -40°C to 1000°C.
• Accuracy: <400°C ±(0.8%+4), ≥400°C ±(1.5%+15).
• Resolution: 1°C.
• Thermocouple: K type.
• Note: Do not input any voltage at this range.

Usage Features:

Safety Notes:

• Meets IEC1010 standard.
• Check test leads before measuring.
• Do not input values exceeding limits to avoid electric shock or meter damage.
• Be careful when measuring voltage over DCV60V, ACV40V.
• Select correct function.
• Remove test leads from testing point when changing function.
• Never take measurement when test leads are in current terminal.
• Do not modify the circuit.
• Safety symbols indicate dangerous voltage, GND, dual insulation, reference to operation manual, and low battery.

Operation:

• Panel Description: LCD display, function keys, knob, temperature jack, VΩHz/mA/COM jacks, battery case.
• Function Keys:
  • RST: Activates meter from sleep/lock states.
  • Hz/DUTY: Switches between frequency/duty cycle/voltage/current when measuring AC voltage/current or frequency.
  • REL: Clears reading to zero, enters relative value measuring.
  • HOLD: Holds current measurement on LCD; "HOLD" displayed. Press again to exit.
  • Range: Selects auto or manual range.
  • DC/AC: Selects DC/AC mode.
• Knob: Changes measuring function and range.

Measurement Procedures (General Notes):

• Always insert black lead to "COM" and red lead to appropriate socket (VΩHz, mA, 20A).
• Set function switch to desired range.
• Press DC/AC key for DC/AC mode selection.
• Connect test leads to the test point.
• "OL" indicates over-range; switch to a higher range.
• Do not exceed maximum voltage/current limits.
• Remove leads from testing point when changing function or range.
• Be careful when measuring high voltage.
• For current measurements, if unsure, start with a higher range and adjust down.
• For resistance, if unsure, start with a higher range. Short-circuit leads and press REL for small resistance measurements.
• For capacitance, ensure capacitors are fully discharged. Use "REL" to clear zero before measuring. Capacitance range is auto-range only.
• For hFE, define transistor type (NPN/PNP) and insert into correct holes.
• For diode test, connect leads according to polarity. "OL" indicates open circuit or bad diode.
• For continuity test, buzzer sounds for low resistance.
• For temperature, insert thermocouple into "Temp" socket. "Normal temp." displays if input terminal is open.

Auto Power Off (4-13 Auto power off):

• Meter auto powers off after 15 minutes of inactivity.
• Press "POWER AUTO OFF" key twice to turn power on.
• Press "DC/AC" key before turning on to cancel auto power off.

Maintenance Features:

• Do not attempt to modify the inner circuit.
• Do not input voltage over 1000V DC/AC peak value.
• Do not measure voltage at current, resistance, diode, or buzzer ranges.
• Do not use the meter if the battery is not replaced or the battery case is not fixed.
• Before replacing battery or fuse, release test leads and turn power off.
• Keep the multimeter dry, away from dust and dirt.
• Use and store in normal temperature environments. Extreme temperatures can shorten life, damage batteries, and distort or melt plastic parts.
• Handle gently and carefully. Dropping can damage circuit boards and case.
• Wipe with a damp cloth; do not use harsh chemicals, cleaning solvents, or strong detergents.
• Remove battery if not used for a long time. Replace battery when "battery symbol" displays.
• Battery/Fuse Replacement: Remove holster, unscrew bottom case, lift bottom case, replace battery/fuse with same type and rating.

Troubleshooting (If meter does not work properly):

• No Displaying: Check if power is off, HOLD key is active, or battery needs replacement.
• Battery Symbol Displays: Replace battery.
• BIG ERROR: Replace battery.

Important Notes:

• Specifications are subject to change without notice.
• Contact factory for any errors or omissions in the manual.
• Manufacturer is not responsible for accidents or damage caused by improper operation.
• Functions stated in the manual are not reasons for special usage.

Victor VC97 Specifications