Tenma 72-7770A User Manual

1
Model: 72-7765A / 72-10420A / 72-7770A
Palm Size Digital Multimeter

Tenma 72-7770A Specifications

General

Type	Digital Multimeter
Max Current	10A
Frequency Measurement	10Hz to 10MHz
Battery	9V
Continuity	Yes
Diode Test	Yes
Frequency Range	10Hz to 10MHz
Display	LCD
DC Current	200μA to 10A
AC Current	200μA to 10A

Summary

Important Safety Information

DC Voltage Measurement

DC Voltage Ranges and Accuracy

Details the various DC voltage measurement ranges, resolutions, and accuracy specifications.

DC Voltage Overload Protection

AC Voltage Measurement

AC Voltage Ranges and Accuracy

AC Voltage Overload Protection

DC Current Measurement

DC Current Ranges and Accuracy

DC Current Overload Protection

AC Current Measurement

AC Current Ranges and Accuracy

AC Current Overload Protection

Diode and Continuity Measurement

Diode Test Procedure and Interpretation

Explains how to perform diode tests and interpret forward voltage drop readings.

Continuity Test Procedure

Describes how to test circuit continuity using the multimeter's buzzer function.

Resistance Measurement

Resistance Measurement Ranges

Resistance Measurement Procedure

Step-by-step guide for measuring resistance, including probe compensation.

General Specifications

Key Specifications Overview

Summarizes crucial technical details including voltage, fuses, display, and battery.

Battery and Fuse Replacement

Instructions for replacing the multimeter's battery and internal fuses.