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Victor VC921 User Manual

Victor VC921
34 pages
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DIGITAL MULTIMETER
OPERATION MANUAL
WARNING
To avoid electric shock or injured
or damage the instrument, please
read the manual carefully before
operation.
. SAFETY RULES
This series meter meets the
standard of IEC1010. Read it
before operation.
0
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Victor VC921 Specifications

General IconGeneral
TypeDigital Multimeter
Resistance Range400Ω/4kΩ/40kΩ/400kΩ/4MΩ/40MΩ
Diode TestYes
Continuity Buzzer/TestYes
Data HoldYes
BacklightYes
Display3999 Counts LCD
DC Current Range400μA/4000μA/40mA/400mA/10A
AC Current Range400μA/4000μA/40mA/400mA/10A
Power Supply9V battery

Summary

I. SAFETY RULES

Safety Symbols Overview

Explains the meaning of various safety symbols used to indicate high voltage, dual insulation, and general warnings.

Electrical Symbols Defined

Defines common electrical symbols such as GND, low battery, AC, DC, continuity, diode, relative value, and auto range indicators.

II. KEY FUNCTION

REL Key Operation

Details the function of the REL key for zeroing readings and entering relative measurement mode, including its use in Hz range.

RANGE Key Operation

Explains how to use the RANGE key to switch between auto and manual range modes and cycle through manual ranges.

III. SPECIFICATION

General Specifications

Covers general specifications like display type, max indication, measurement method, sampling rate, operating conditions, power, and accessories.

DCV Technical Data

Technical data for DC Voltage (DCV) measurement, covering range, accuracy, and resolution.

ACV Technical Data

Technical data for AC Voltage (ACV) measurement including range, accuracy, resolution, and frequency response.

Continuity Test Technical Data

Technical data for continuity testing, detailing test conditions and overload protection.

Diode Measurement Technical Data

Technical data for diode testing, including overload protection and measurement procedures.

Resistance Measurement Technical Data

Technical data for resistance measurement, detailing range, accuracy, resolution, and specific notes.

Capacitance Measurement Technical Data

Technical data for capacitance measurement, including range, accuracy, resolution, and important notes.

Frequency and DUTY Technical Data

Technical data for frequency and DUTY measurement, including input sensitivity and overload protection.

IV. OPERATION

DCV Measurement Operation

Step-by-step guide for performing DC Voltage measurements, including range selection and proper connection of test leads.

ACV Measurement Operation

Step-by-step guide for performing AC Voltage measurements, including range selection and proper connection of test leads.

Continuity Test Operation

Instructions for performing a continuity test, including applying test leads and interpreting results.

Diode Measurement Operation

Guide for measuring diode forward voltage drop and reverse bias, including positive and reverse connection methods.

Resistance Measurement Operation

Instructions for measuring resistance, including selecting the range, using the REL key, and handling low resistance measurements.

Capacitance Measurement Operation

Guide for measuring capacitance, including polarity, zeroing, range conversion, and signal handling.

Frequency Measurement Operation

Instructions for measuring frequency and duty cycle, including setting the range and using the REL key.

Auto Power Off Feature

Explains the automatic power-off function that conserves battery by shutting down the meter after 15 minutes of inactivity.

V. MAINTENANCE

Battery Replacement

Details steps for replacing the multimeter's battery, including unlocking the case and using alkaline batteries.

Fuse Replacement

Instructions for replacing the fuse, emphasizing the use of the same specified type of fuse.

VI. TROUBLESHOOTING

Common Issues and Solutions

Provides solutions for common operational problems like no display or errors, primarily suggesting battery replacement.

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