Logic Digital Multimeter ( HTC – DM-88 )

Description

Logic Digital Multimeter (HTC – DM-88)

The HTC DM-88 Logic Digital Multimeter is a versatile, multifunctional and reliable digital measuring instrument designed for professionals, technicians, electricians, engineers, electronics enthusiasts, maintenance personnel and students. Combining accurate electrical measurement with advanced testing capabilities, the DM-88 is suitable for a wide range of industrial, commercial, laboratory, electronic and domestic applications.

This 3¾-digit, 3,999-count digital multimeter is designed to provide clear and dependable measurement results across multiple electrical parameters. It supports AC and DC voltage measurement up to 1000V, along with AC and DC current measurement up to 40A, making it suitable for a broad range of electrical troubleshooting and testing requirements.

The DM-88 is more than a conventional digital multimeter. It incorporates a comprehensive selection of measurement and testing functions, including resistance, capacitance, frequency, temperature, diode testing, continuity testing, transistor hFE testing, TTL/CMOS logic testing, duty cycle measurement and True RMS measurement. This combination makes the instrument particularly useful for technicians who require multiple testing functions in a single portable device.

3¾-Digit, 3,999-Count Display

The HTC DM-88 features a 3¾-digit LCD display with a 3,999-count resolution, providing clear numerical readings for measurement and troubleshooting tasks. The display is designed to make values easy to read during routine electrical and electronic testing.

A built-in backlight improves display visibility in low-light environments. This feature can be especially useful when technicians are working inside electrical panels, control cabinets, machinery areas, workshops, service rooms or other locations where lighting conditions are not ideal.

True RMS Measurement

The True RMS function provides more accurate measurement of AC signals, particularly where the waveform is not a simple sinusoidal waveform. This makes the DM-88 useful for modern electrical and electronic systems where variable-frequency drives, switching power supplies, electronic controls and other non-linear loads may produce distorted waveforms.

True RMS capability makes the meter suitable for professional troubleshooting applications where reliable AC measurement is important.

Wide Range of Electrical Measurements

The DM-88 provides multiple measurement functions in one compact instrument. It can measure AC/DC voltage up to 1000V and AC/DC current up to 40A, allowing users to test electrical circuits, power supplies, equipment and components.

The resistance measurement range extends from 400Ω to 40MΩ, providing flexibility for checking low-resistance circuits as well as higher-resistance components and electrical paths.

For electronic component testing, the meter also supports capacitance measurement from 4nF to 200µF and frequency measurement from 10Hz to 10MHz.

Temperature Measurement

The DM-88 supports temperature measurement from approximately -40°C to 1000°C when used with the supplied TP04 temperature probe. This provides additional functionality for technicians working with electrical equipment, machinery, heating systems, electronic assemblies and general temperature-monitoring applications.

The temperature function allows the multimeter to serve not only as an electrical testing instrument but also as a practical temperature measurement device.

Logic and Electronic Testing Functions

A major advantage of the HTC DM-88 is its additional electronic testing capability. The instrument supports TTL and CMOS logic testing, allowing users to perform basic logic-level checks in suitable digital electronic circuits.

It also provides diode testing and transistor hFE testing, making it useful for electronics servicing, circuit troubleshooting and component identification.

The continuity buzzer provides an audible indication when an appropriate continuity condition is detected, helping technicians perform wiring and circuit-path checks without continuously watching the display.

Duty Cycle and Frequency Measurement

The DM-88 includes duty-cycle measurement along with frequency measurement. These functions can be useful when examining periodic electronic signals, pulse-width-related signals and other frequency-based circuits.

With a frequency measurement capability extending up to 10MHz, the meter can support a variety of general electronic testing applications.

Safety and Protection Features

The instrument incorporates function protection to help reduce the possibility of damage caused by incorrect operating conditions. Its stated 10MΩ input impedance also helps minimize loading effects on many voltage-measurement circuits.

The meter includes a low-battery indication, allowing users to recognize when the batteries require replacement. An automatic power-off function switches the instrument off after approximately 30 minutes of inactivity under normal operating conditions, helping conserve battery power.

Compact and Portable Design

Measuring approximately 170 mm × 86 mm × 35 mm and weighing around 290 grams, the DM-88 is compact enough for field service and workshop use. Its portable construction allows technicians to carry it between different testing locations.

The meter operates using two AAA 1.5V batteries, providing a convenient and commonly available power source.

Applications

The HTC DM-88 Logic Digital Multimeter is suitable for:

• Electrical installation and maintenance
• Industrial troubleshooting
• Electronic circuit testing
• Control-panel testing
• Power supply diagnostics
• Electrical and electronic servicing
• Component testing
• Automation and control applications
• Laboratory and educational applications
• HVAC and equipment maintenance
• Field service and repair work
• General domestic electrical testing

Standard Accessories

The DM-88 is supplied with essential accessories for immediate use, including test leads, user manual, TP04 temperature probe and batteries.

With its combination of electrical measurement, electronic testing, temperature measurement, logic testing and True RMS capability, the HTC DM-88 Logic Digital Multimeter is a practical multifunction instrument for professionals and enthusiasts who require a broad range of measurement capabilities in one compact device.

Japsin Instrumentation – Since 1974