CM-C200 - Sound Level Meter Galaxy Audio - Free user manual and instructions

Product Type	Sound Level Meter Calibrator (SPL Calibrator)
Model	CM-C200
Brand	Galaxy Audio
Standards Compliance	ANSI S1.40-1984, IEC 60942-2003 Class 2
Calibration Levels	94 dB and 114 dB re 20 µPa
Output Frequency	1000 Hz ± 2%
Accuracy	± 0.5 dB (under reference conditions)
Total Harmonic Distortion (THD)	< 3%
Microphone Compatibility	1-inch directly, 1/2-inch via included adapter
Power Source	One 9V battery (006P, IEC 6F22, NEDA 1604)
Battery Life	Approximately 40 hours (alkaline)
Battery Status Indication	Green LED (good), Red LED (low - replace)
Dimensions	4.4 x 2.4 x 1.7 in (113 x 63 x 44 mm)
Weight	Approximately 0.41 lb (186.4 g) including battery
Operating Temperature	32 to 140 °F (0 to 40 °C)
Operating Humidity	10 to 90% RH
Operating Altitude	Up to 6562 ft (2000 m)
Storage Temperature	14 to 122 °F (-10 to 50 °C)
Storage Humidity	0 to 70% RH
Included Accessories	Instruction manual, carrying pouch, 9V battery, 1/2-inch microphone adapter
Maintenance	Wipe with dry cloth; do not use abrasives or solvents
Safety	Use only as specified; repairs by qualified personnel only

Frequently Asked Questions - CM-C200 Galaxy Audio

What type of battery does the CM-C200 require?

The CM-C200 uses one 9V battery (006P, IEC 6F22, or NEDA 1604). We recommend using an alkaline battery for best performance and battery life (approx. 40 hours).

How do I know when the battery is low?

The power button has an integrated LED. When you turn on the calibrator, a green LED indicates good battery. If the LED turns red, the battery voltage is too low and must be replaced immediately to ensure accurate calibration.

Can I calibrate a 1/2-inch microphone?

Yes. The calibrator cavity is designed for 1-inch microphones. For 1/2-inch microphones, simply insert the included 1/2-inch adapter gently into the cavity before inserting the microphone.

What are the two calibration levels (94 dB and 114 dB) used for?

The 94 dB level is the standard reference level for most sound level meters. The 114 dB level is 20 dB higher and is useful for calibrating in noisy environments or for verifying higher range accuracy.

How do I calibrate my sound level meter with the CM-C200?

1. Install a fresh battery and turn the calibrator on to the desired level (94 or 114 dB). 2. Select a corresponding range on your sound level meter (e.g., 100 dB upper limit for 94 dB). 3. Fully insert the microphone into the calibrator cavity. 4. Adjust the sound level meter's sensitivity until it reads the calibrator's output level. See the manual for full details.

What is the frequency of the calibration tone?

The calibrator generates a 1000 Hz (±2%) tone at both 94 dB and 114 dB levels.

How accurate is the CM-C200?

The sound pressure level accuracy is ±0.5 dB under reference conditions (23°C, 50% RH, 1013 hPa). The total harmonic distortion is less than 3%.

What environmental conditions affect calibration?

Temperature and humidity can influence accuracy. The temperature coefficient is 0.005 dB/°C and humidity coefficient is 0.005 dB/%RH. For best results, calibrate in stable conditions within the specified operating range (0-40°C, 10-90% RH).

How do I clean and maintain the calibrator?

Periodically wipe the case with a dry cloth. Do not use abrasives or solvents. There are no user-serviceable parts inside; for repairs, contact qualified personnel.

What accessories are included with the CM-C200?

The package includes: the CM-C200 calibrator, an instruction manual, a carrying pouch, one 9V battery, and a 1/2-inch microphone adapter.

USER MANUAL CM-C200 Galaxy Audio

1. Safety Information......1

Environment Conditions....1

Maintenance & Cleaning....1

Safety symbols....1

2. Description ...... 2

3. Features....2

4. Specifications....2

Output sound pressure levels....2

Output frequency....2

Reference conditions....2

Influence of ambient conditions....2

Total Harmonic Distortion(THD)....2

Accuracy of sound pressure level....2

Power....2

Battery life....2

Battery test ....3

Dimensions....3

Weight....3

Operating conditions....3

Storage temperature & humidity....3

Accessories.... 3

5. Nomenclature And Function......4

6. Operating Preparation......5

7. Calibration Procedure....5

1. Safety Information

Read the following safety information carefully before attempting to operate or service the meter.

Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired.

Environment Conditions

■ Altitude up to 6562ft. (2000 meters)
■ Relative humidity 90% max.
■ Operation Temperature 32° - 140°F (0° to 40 °C)

Maintenance & Cleaning

Repairs or servicing not covered in this manual should only be performed by qualified personnel.

Periodically wipe the case with a dry cloth. Do not use abrasives or solvents on this instrument.

Safety symbols

Comply with EMC

When servicing, use only specified replacement parts.

2. Description

This sound level calibrator is used to calibrate sound level meters and other sound measurement equipment. You can calibrate 1 inch diameter microphones directly, and 1/2 inch microphones by using the 1/2 inch adaptor supplied with the calibrator.

3. Features

Conforms to ANSI S1.40-1984 and IEC 60942-2003

Class 2.

Calibration levels of 94dB and 114dB.

Fits the 1-inch and 1/2-inch diameter microphones.

4. Specifications

Output sound pressure levels:

94dB and 114dB re 20 uPa under reference conditions.

Output frequency: 1000Hz +/- 2%

Reference conditions:

Temperature: 74^ F (23°C)

Relative humidity: 50%

Atmospheric pressure: 1013hpa

Influence of ambient conditions:

Temperature coefficient: 0.005dB/°C

Humidity coefficient: 0.005dB/%RH

Total Harmonic Distortion (THD): <3%

Accuracy of sound pressure level: +/- 0.5dB

Power: one 9V battery 006P or IEC 6F22 or NEDA 1604.

Battery life: approx.40 hours.(Alkaline Battery)

Battery test:

Internal circuitry continuously checks the condition of battery.

The calibrator should not be operated when the green LED turns to red, which means that the battery voltage has fallen below acceptable range.

Dimensions:

4.4"(L) × 2.4"(W) × 1.7"(H), 113mm(L) × 63mm(W) × 44mm (H)

Weight: approx. .41lbs. (186.4g) (including battery)

Operating conditions:

32 - 140°F (0 - 40°C), 10 - 90%RH, 650 - 1080hpa

Storage temperature & humidity:

14 - 122°F (-10 - 50°C), 0 - 70%RH

Accessories:

Instruction manual, carrying pouch, 9V battery, 12 " microphone adapter.

5. Nomenclature And Functions

CHECK MATE CALIBRATOR SPL METER CALIBRATOR Power ON UNCover Low Battery OFF 94dB 114dB Frequency: 70Hz GALAX TAUDIO CE EC 80842 Class 2 ANS B° 43 - THB ① ② ③

9V BATTERY NEGA 160A 4P22, 806F ⑤

Simple diagram showing a numbered circle connected to a laptop (no text or symbols)

Simple line drawing of a rectangular fan or vent with a central circular dial and side connectors (no text or symbols)

① Power and low battery indicator LED.
② Power and output level select switch.
③ Transducer assembly 1-inch cavity for microphone insertion.
④ 1/2-inch microphone adapter.
⑤ Battery cover.

6. Operating Preparation

(1) Remove battery cover and install a 9V Battery in the battery compartment.
(2) To quickly check the operation of the sound level calibrator:

(a) Slide the power switch from OFF to the 94dB position and listen for the 1 kHz audible tone. A green LED indicates a good battery. A red LED indicates the battery is low and should be replaced.

(b) Change the switch from 94dB to 114dB and listen for the 20dB increase in the level of the tone. This position is best for calibrating in noisy environments.

7. Calibration Procedure

graph LR
    A["Device 1"] --> B["Main Module"]
    B --> C["940 timer"]
    C --> D["Control Button"]
    D --> E["AVG"]
    D --> F["SWI"]
    D --> G["NMT"]
    D --> H["CLK"]
    D --> I["RECL"]
    I --> J["LEVEL"]
    J --> K["Power"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#ffc,stroke:#333
    style F fill:#fcc,stroke:#333
    style G fill:#ffc,stroke:#333
    style H fill:#fcc,stroke:#333
    style I fill:#ffc,stroke:#333
    style J fill:#fcc,stroke:#333
    style K fill:#ffc,stroke:#333
    style L fill:#fcc,stroke:#333

(1) The cavity of the calibrator will accommodate a 1-inch diameter microphone.
(2) When a calibration is performed on an instrument with a 1/2-inch microphone, the 1/2-inch microphone adaptor will have to be inserted by gently pushing it all the way into the cavity.

(3) If 94dB is selected on the calibrator, then choose a level range on the instrument under test to a range having 100dB as it's upper limit.

If 114dB is selected on the calibrator, choose a range with an upper limit of 120dB. The instrument may be set to FAST or SLOW response and C or A weighting.

(4) Insert the microphone of the of the instrument being calibrated all the way into the cavity of the calibrator. Hold the two together so that the instrument remains straight into the calibrator during the test.

(5) Read the level on the instrument under test and adjust the sensitivity control for the correct indication of the sound level calibrator level selected in step 3.

(6) When the calibrator is not in use, please switch OFF the power to save the battery.

CAUTION!

Ambient sources of noise or vibration can cause a false calibration indication. This can be especially significant at the lower 94dB level.

Instruction Manual

CHECK MATE CALIBRATOR SPL METER CALIBRATOR CM-C200

GALAXY AUDIO®

MAKERS OF THE ORIGINAL HOT SP T PERSONAL MONITOR

601 E. Pawnee Wichita, KS 67211

800.369.7768

FAX [phone]

www.galaxyaudio.com