SLM-3 - Uncategorized Syscom - Free user manual and instructions
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| Brand | Syscom |
| Model | SLM-3 |
| Product Type | Digital Sound Level Meter |
| Measurement Range | 30 to 130 dB |
| Accuracy | ±1.5 dB |
| Frequency Weighting | A and C |
| Time Weighting | Fast and Slow |
| Frequency Range | 31.5 Hz to 8 kHz |
| Resolution | 0.1 dB |
| Display | 4-digit LCD with backlight |
| Data Hold | Yes |
| Max/Min Hold | Yes |
| Auto Power Off | Yes, after 15 minutes of inactivity |
| Power Supply | 9V battery (6F22) |
| Battery Life | About 50 hours |
| Dimensions (H x W x D) | 210 x 55 x 32 mm |
| Weight | 180 g including battery |
| Operating Temperature | 0°C to 40°C |
| Maintenance | Clean with a soft, dry cloth |
| Safety | Do not disassemble or expose to moisture |
| Repairability | Contact authorized service center; no user-serviceable parts |
| Included Accessories | Battery, carry case, user manual |
Frequently Asked Questions - SLM-3 Syscom
How do I calibrate the SLM-3?
The SLM-3 uses an electret condenser microphone and is factory calibrated. For field calibration, use an external calibrator and adjust the potentiometer inside the battery compartment.
What is the difference between A and C frequency weighting?
A weighting mimics the human ear's response at low levels, while C weighting is more linear across frequencies. Choose A for general noise measurements and C for loud, low-frequency sounds.
How do I change the battery?
Slide the battery cover off, replace the 9V battery, and ensure correct polarity. The low-battery indicator appears when replacement is needed.
Why does the display show "OL"?
"OL" means overload, indicating the sound level exceeds the upper limit of the measurement range (130 dB). Reduce the sound source or increase the distance.
How do I use the data hold function?
Press the HOLD button to freeze the current reading on the display. Press again to release and resume real-time measurement.
What is the accuracy of the SLM-3?
The accuracy is ±1.5 dB under reference conditions, making it suitable for general noise surveys and acoustic environment assessments.
Can I use the SLM-3 to measure sound from a computer speaker?
Yes, place the microphone close to the speaker, but avoid reflective surfaces. Use fast time weighting for fluctuating sounds.
How should I clean and maintain the device?
Wipe the exterior with a soft, dry cloth. Do not use solvents. Store in a dry place and remove the battery if unused for long periods.
What is the maximum sound level it can measure?
The maximum measurable level is 130 dB. Prolonged exposure to such levels is harmful; use hearing protection.
How to select Fast or Slow time weighting?
Toggle the F/S button to switch between Fast (125 ms) and Slow (1 s) response times. Fast catches peaks, Slow gives averaged readings.
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USER MANUAL SLM-3 Syscom
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Product information
Brand : Syscom
Model : SLM-3
Category : Uncategorized