Controls

(1) WINDSCREEN

If you operate at wind speed over 10m/sec, please put protective accessories in front of the microphone.

(2) DISPLAY LCD

LCD readout for all information

(3)POWER ON/OFF BUTTON Turn the meter power ON/OFF

(4)BACKLIGHT BUTTON

Turn the meter backlight ON/OFF

(5)A-WEIGHTING / C-WEIGHTING SELECT BUTTON A — Weighting: For general sound level measurements.

C — Weighting: For checking the low-frequency content of noise.

(NOTE: if the C-Weighting level is much higher than the A-Weighting level, then there is a large amount of low-frequency noise)

(6)TIME WEIGHTING SELECT BUTTON

F — (Fast Response): For normal measurements (fast varying noise)

S — (Slow Response): For checking average level of fluctuating noise

(7)LEVEL RANGE SELECT BUTTON Lo — 30~100dB; Hi — 60~130dB

When “OVER” is indicated, the ranges switch to another range of measurement.

(8)MAX / DATA HOLD BUTTON

MAX — Hold position is used to measure the maximum level of sounds. The maximum measured level is up dated continuously. Pressing the button once again will release the hold and allow a further measurement.

Data Hold — Press and hold the button for over 2 second to turn on or off data hold function. The hold function freezes the reading in the display.

(9) MICROPHONE

1/2” Electret Condenser microphone

(10) BATTERY COMPARTMENT

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DSM1_manual_book

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Battery Replacement

Battery Loading

Remove the battery cover on the back to install one 9V Battery.

Battery Replacement

When the battery voltage drops below the operating voltage, the “BAT” icon appears on the LCD display. If it appears, the battery should be replaced with a new one.

Operating Precautions

(A) Wind blowing across the microphone will bring additional extraneous noise.

When using the instrument in the presence of wind, make sure to mount the windscreen.

(B)Calibrate the instrument before operation if the instrument was not in use for a long time.

(C)Do not store or operate the instrument at high temperatures or a high humidity environment.

(D)Keep microphone dry and avoid severe vibration.

(E)Please remove the battery when not in use.

Measurement

(1)Install a fresh 9-volt battery in the battery compartment.

(2)Turn on power and select the desired response time and weighting. If the sound source consists of short bursts or you are only catching sound peaks, set the response to FAST. To measure average sound, use the slow setting.

Select A-weighting for general noise sound level and C-weighting for measuring sound level of acoustic material.

(3)Select desired Level Range

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Nady Systems Digital Sound Level Meter DSM-1 owner manual Battery Replacement, Operating Precautions, Measurement

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.