1. Introduction
The Komshine KLS-25M Fiber Optic Laser Source and KPM-25M Optical Power Meter are designed for efficient and accurate fiber network installation, engineering acceptance, and maintenance. This handheld test kit provides a quick and precise solution for both Single Mode (SM) and Multi Mode (MM) fiber testing.
The KLS-25M Optical Light Source offers stable light output at specific wavelengths, while the KPM-25M Optical Power Meter accurately measures optical power levels. When used together, they enable comprehensive fiber optic link testing.
2. Safety Information
Please read and understand the following safety precautions before using the device:
- Do not look directly into the optical output port of the KLS-25M Light Source when it is active. Laser radiation can cause serious eye injury.
- Use only the specified battery type (AAA) and ensure correct polarity during installation.
- Keep the devices dry and clean. Avoid exposure to extreme temperatures, humidity, or corrosive environments.
- Handle fiber optic connectors with care. Always use dust caps when not in use to prevent contamination.
- Do not attempt to disassemble or repair the devices. Refer to qualified service personnel for any repairs.
3. Product Overview and Components
The Komshine KLS-25M/KPM-25M kit typically includes:
- Komshine KLS-25M Optical Light Source
- Komshine KPM-25M Optical Power Meter
- Protective silicone cases for both units
- User Manual (downloadable via QR code on packaging)
- AAA Batteries (2 per unit)
3.1 KPM-25M Optical Power Meter
Key Features:
- Pocketsize, large easy-to-read LCD display.
- Power measurements in dBm or µW.
- 2.5 mm SC connector input.
- Long battery life with 2 x AAA alkaline batteries.
3.2 KLS-25M Optical Light Source
Key Features:
- 1~3 wavelengths output from one port (1310/1550nm for SM model).
- High stabilization, built-in optic isolator.
- Auto Wave ID output (when used with KomShine optical power meter).
- Energy save mode.
- Continuous working for up to 46 hours.
4. Setup
4.1 Battery Installation
- Locate the battery compartment on the back of the device.
- Open the battery cover.
- Insert two AAA alkaline batteries, ensuring correct polarity (+/-).
- Close the battery cover securely.
4.2 Connecting Fiber Optic Cables
Both the KLS-25M and KPM-25M feature a 2.5mm universal interface, supporting SC, FC, and ST connectors. LC connectors are optional and may require an adapter.
- Remove the dust cap from the device's optical port.
- Clean the fiber optic connector end-face thoroughly using appropriate cleaning tools.
- Insert the cleaned fiber optic connector into the device's port until it clicks into place.
- Ensure a secure connection for accurate measurements.
5. Operation
5.1 KLS-25M Optical Light Source Operation
- Power On/Off: Press the Power button (
) to turn the device on or off. - Wavelength Selection: Press the Lambda button (
) to cycle through available wavelengths (e.g., 1310nm, 1550nm). The selected wavelength will be displayed on the LCD. - Frequency Selection (CW/HZ): Press the CW/HZ button to switch between Continuous Wave (CW) mode and modulated frequencies (e.g., 270Hz, 1000Hz, 2000Hz).
- Backlight: Press the Light button (
) to toggle the display backlight.
5.2 KPM-25M Optical Power Meter Operation
- Power On/Off: Press the Power button () to turn the device on or off.
- Wavelength Selection: Press the Lambda button () to cycle through the calibrated wavelengths (850, 1300, 1310, 1490, 1550, 1625 nm). Ensure the selected wavelength matches the light source for accurate measurements.
- Reference Setting (REF/dB): Press the REF/dB button to set the current power reading as a reference (0 dB) for relative measurements. Press again to switch between absolute (dBm or µW) and relative (dB) measurements.
- Backlight: Press the Light button () to toggle the display backlight.
5.3 Auto Wave ID Function (KLS-25M with KPM-25M)
When the KLS-25M Light Source is set to output a specific wavelength and connected to a KPM-25M Power Meter (specifically KPM-25u model for full functionality), the KPM-25M can automatically detect and display the incoming wavelength, simplifying testing procedures.
6. Maintenance
- Cleaning Optical Ports: Regularly clean the optical ports of both devices and the fiber connector end-faces. Use lint-free wipes and optical cleaning solutions or specialized fiber optic cleaning tools. Contaminated connectors are a primary cause of inaccurate measurements.
- Battery Replacement: Replace batteries when the low battery indicator appears on the LCD. Always use fresh AAA alkaline batteries.
- Storage: When not in use, store the devices in their protective cases with dust caps on all optical ports. Store in a cool, dry place away from direct sunlight and extreme temperatures.
- Protective Case: Keep the silicone protective cases on the devices during use to guard against minor impacts and wear.
7. Troubleshooting
7.1 Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Dead or incorrectly installed batteries | Replace batteries, ensuring correct polarity. |
| Inaccurate power readings (KPM-25M) |
|
|
| No light output (KLS-25M) |
|
|
| Display issues (e.g., dim, flickering) | Low battery | Replace batteries. |
7.2 User Manual Download
For a detailed user manual and additional resources, please visit the Komshine website. A QR code for manual download may also be available on the product packaging.
8. Specifications
8.1 KLS-25M Optical Light Source Specifications
| Parameter | Specification (KLS-25M-S) |
|---|---|
| Wavelength | 1310/1550 nm |
| Fiber Model | SM (Single Mode) |
| Output Power | -5 dBm |
| Connector Type | SC (Universal 2.5mm interface) |
| Battery Operating Time | 46 hours |
| Battery | 2 x AAA |
| Operating Temperature | -10°C ~ +60°C |
| Storage Temperature | -70°C ~ +3°C |
| Dimension (W×D×H) | 130mm × 65mm × 35mm |
| Weight | 180g |
8.2 KPM-25M Optical Power Meter Specifications
| Parameter | Specification (KPM-25) |
|---|---|
| Wavelength Range | 800 ~ 1700 nm |
| Detector | InGaAs |
| Measurement Range | -70 ~ +3 dBm |
| Uncertainty | ±5% (-10 dBm, 20±3°C) |
| Calibrated Wavelengths | 850, 1300, 1310, 1490, 1550, 1625 nm |
| Resolution | 0.01 dBm |
| Connector | SC (Universal 2.5mm interface) |
| Power Supply | Alkaline Battery (2 x AAA 1.5V) |
| Battery Operating Time | 240 hours |
| Operating Temperature | -10°C ~ +60°C |
| Storage Temperature | -25°C ~ +70°C |
| Relative Humidity | 0~95% (non-condensing) |
| Dimension (W×D×H) | 130mm × 65mm × 35mm |
| Weight | 160g |
9. User Tips
- Always clean fiber optic connectors before each use to ensure accurate and repeatable measurements.
- When performing loss measurements, ensure the wavelength setting on the KPM-25M matches the output wavelength of the KLS-25M.
- Utilize the protective silicone cases to extend the lifespan of your devices and protect them from everyday wear and tear.
- For long-term storage, remove batteries to prevent leakage and potential damage to the devices.
10. Warranty and Support
10.1 Warranty Information
This product comes with a 1-year warranty from the date of purchase, covering manufacturing defects and malfunctions under normal use. Please retain your proof of purchase for warranty claims.
10.2 Technical Support
For technical assistance, troubleshooting, or warranty inquiries, please contact your vendor or Komshine customer support. Refer to the official Komshine website for the most up-to-date contact information and support resources.
