Nady Systems Digital Sound Level Meter DSM-1 owner manual Introduction, Contents, Specifications

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Introduction

Congratulations for purchasing the DSM-1 Digital Sound Level Meter. To ensure that you get the most from your unit, we recommend that you read and follow the manual carefully before use. This unit conforms to the IEC651 type 2, ANSI S1.4 type 2 for Sound Level Meters.

The DSM-1 has been designed to meet the measurement requirements of Safety Engineers, Health, Industrial safety offices and sound quality control in various environments.

Highly accurate SPL meter with 2 level ranges measuring between 30dB and 130dB @ 32Hz - 8KHz

Full professional features include easy-to-read 4-digit LCD display with selectable permanent backlight; selectable A or C weighting and Fast or Slow response; maximum Hold selector with Hold button to capture input at any time; alarm indicating the input is above range; internal battery tester; built-in calibrated, linear omnidirectional 1/2” electret condenser microphone; and threaded insert to attach to optional SMT-3 tripod or standard camera tripod

Uses 9VDC alkaline battery with up to 50 hours battery life

Foam windscreen, sturdy vinyl carrying case, and battery included

Contents

 

Introduction

2

Controls

3

Battery Replacement

5

Operation Precautions

5

Measurement

5

Calibration Procedures

6

Specifications

7

 

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DSM1_manual_book

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Specifications

Standard applied

IEC651 type 2, ANSI S1.4 type 2

Frequency range

31.5Hz~8KHz

Measuring level range

30~130dB

Frequency weighting

A/C

Microphone

1/2 inch electret condenser microphone

Calibration

Electrical calibration with the internal oscillator (1kHz sine wave)

Display

LCD

Digital display

4 digits

Resolution

0.1dB

Display Up data

0.5 sec.

Time weighting

FAST(125mS), SLOW(1 sec.)

Level ranges

Lo: 30-100dB; Hi: 60-130dB

Accuracy

+ 1.5dB (under reference conditions)

Alarm function

“OVER” is show when input is out of range

Maximum hold

Hold readings the Maximum Value, with decay < 1dB/3minutes.

Auto power off

Meter automatically shuts down after approx. 15 minutes of inactivity.

Power supply

One 9V battery, 006P or IEC 6F22 or NEDA 1604.

Power life

About 50hrs(alkaline Battery)

Operation temperature

0 to 40 Ohms (32 to 104 °F)

Operation humidity

10 to 90%RH

Storage temperature

-10 to 60 °C ( 14 to 140 °F)

Storage humidity

10 to 75%RH

Dimensions

8.3” x 2.2” x 1.3” (210 x 55 x 32 mm)

Weight

8.01 oz (230g) (including battery)

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Contents DSM-1 Introduction ContentsSpecifications Calibration Procedures ControlsMeasurement Battery ReplacementOperating Precautions

Digital Sound Level Meter DSM-1 specifications

The Nady Systems Digital Sound Level Meter DSM-1 is a versatile and practical tool designed for a range of sound measurement applications. Whether you're an audio engineer, sound technician, or a DIY enthusiast, the DSM-1 offers accurate readings with user-friendly features that ensure precise sound monitoring.

One of the standout features of the DSM-1 is its high-quality digital display. The large LCD screen provides clear and easily readable results, showing sound levels in decibels (dB) across a broad range. It features a measurement range typically from 30 dB to 130 dB, allowing for the assessment of both quiet environments and very loud settings. This wide dynamic range makes it suitable for monitoring sound levels in various scenarios, such as live music events, studio recordings, and industrial environments.

The DSM-1 employs a fast response time, ensuring that users receive real-time data on sound fluctuations. This is crucial for sound level monitoring where quick adjustments are needed to adhere to safety regulations or to optimize audio performance. Furthermore, the sound meter includes both A-weighting and C-weighting settings. A-weighting is ideal for measuring environmental noise and speech, while C-weighting is effective for measuring peak sound levels in louder environments.

Another notable characteristic of the DSM-1 is its compact and portable design. Weighing in at just a few ounces and featuring a small footprint, the device is easy to transport, making it an ideal companion for sound professionals on the go. The built-in memory function allows users to store and review previous measurements, which is beneficial for tracking changes over time.

The Nady Systems Digital Sound Level Meter also offers a helpful peak hold function, allowing users to capture and retain the maximum sound level detected during a measurement session. This feature is particularly useful in identifying loud peaks in music or ambient noise that may exceed safety thresholds.

Moreover, the DSM-1 is powered by a long-lasting battery, ensuring extended use without frequent replacements. The device's low power consumption and auto shut-off feature help prolong battery life, making it as efficient as it is effective.

In summary, the Nady Systems Digital Sound Level Meter DSM-1 is an essential tool for anyone who requires reliable sound level measurements. With its precise readings, convenient features, and portability, the DSM-1 is designed to meet the demands of both professionals and hobbyists in various audio environments. Whether you're optimizing sound in a venue or ensuring compliance with noise regulations, the DSM-1 offers the accuracy and functionality needed to achieve your goals.