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Trio DM-801 User Manual

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DIP METER
DM-801
TRIO
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Trio DM-801 Specifications

General IconGeneral
TypeDigital Multimeter
DC Voltage Ranges200mV, 2V, 20V, 200V, 1000V
AC Voltage Ranges200V, 750V
Accuracy±(0.5% + 2 digits)
Operating Temperature0°C to 40°C
Power Supply9V battery
DC Current Ranges200μA, 2mA, 20mA, 200mA, 10A
Resistance Ranges200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ
Input Impedance10MΩ
Measurement RangeSee DC Voltage Ranges, AC Voltage Ranges, DC Current Ranges, Resistance Ranges
Operating Humidity80% RH max

Summary

Introduction

Inductive Coupling

Explains how the dip meter works using inductive coupling by placing the coil near the circuit.

Capacitive Coupling

Details the dip meter's capacitive coupling method for measurements without coil contact.

Features

Specifications

Controls

Precautions

Battery and Coil Loading

Provides instructions for installing the battery and loading oscillation coils into the unit.

Obtaining a Dip Point

Offers guidance on adjusting the dip meter's proximity for accurate resonant frequency detection.

Measuring Transistor Circuits

Advises on measuring resonant circuits in transistorized transmitters and receivers.

Applications

Use as a Dip Meter

Step-by-step guide on selecting coils, connecting, and operating the DM-801 as a dip meter.

Other Frequency Measurements

Covers measuring resonant circuit frequencies and antenna resonance using the dip meter.

Use as a Signal Generator

Instructions for using the DM-801 to align receivers by acting as a signal generator.

Crystal Checker and Marker Generator

Details using the DM-801 for checking crystals and acting as a marker generator for calibration.

Absorption Frequency Meter

Guide on using the DM-801 to measure oscillator and transmission frequencies by absorption.

Field-Strength Meter

Explains how to use the DM-801 to measure the field strength of transmit antennas.

Capacitance and Inductance Measurements

Methods for calculating unknown capacitance and inductance values using resonant frequencies.

Adjustment

Parts List

Amp Unit

High Frequency Unit

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