Komshine KLS-25M/KPM-25M Fiber Optic Laser Source and Optical Power Meter User Manual

1. Introduction

The Komshine KLS-25M Optical Light Source and KPM-25M Optical Power Meter are designed for efficient and accurate testing in fiber optic networks. The KLS-25M is ideal for fiber network installation, engineering acceptance, and maintenance, providing a stable light source. The KPM-25M is a compact, easy-to-use handheld instrument for absolute optical power measurements and relative loss measurements. When used together, they offer a comprehensive solution for both single-mode (SM) and multi-mode (MM) fiber testing.

2. Safety Information

Please read and understand the following safety precautions before operating the device:

• Do not look directly into the optical output port when the device is active. Laser radiation can cause eye damage.
• Use only the specified battery type (2x AAA 1.5V batteries).
• Keep the device away from water and extreme temperatures.
• Handle fiber optic connectors with care to avoid damage and ensure accurate measurements.
• The device is designed with drop protection (up to 2m) and water-resistant keys, but avoid unnecessary drops or exposure to liquids.

3. Product Overview and Features

KPM-25M Optical Power Meter

• Wavelengths: Supports 7 calibrated wavelengths (850, 980, 1300, 1310, 1490, 1550, 1625 nm) for various test environments.
• Accuracy: High precision with measurement error less than ±0.2dB.
• Display: Large, easy-to-read LCD with backlight.
• Calibration: User self-calibration function for adjusting parameters independently.
• Measurement Units: Power measurements in dBm or μW.
• Connector: 2.5 mm universal SC connector input (optional 1.25mm for LC).
• Design: Ergonomic, pocket-sized, one-handed operation, new upgrade button design with physical keys and touch feedback.
• Protection: Drop-resistant silicone jacket.
• Lighting: Integrated LED lighting for working in dark environments.
• Power: Long battery life with 2 x AAA alkaline batteries.

KLS-25M Optical Light Source

• Wavelengths: 1310/1550nm for single-mode (SM) fiber.
• Output: 1~3 wavelengths output from one port.
• Stability: High stabilization with built-in optic isolator.
• Auto Wave ID: Automatically identifies wavelength when used with KomShine optical power meter.
• Modulation: Continuous output with three modulation frequencies (270Hz, 1KHz, 2KHz).
• Connector: 2.5mm universal adapter for SC/FC/ST (optional 1.25mm for LC).
• Design: Ergonomic, pocket-sized, one-handed operation.
• Protection: Drop protection (2m), water-resistant keys, removable silicone protective case.
• Lighting: Integrated LED lighting.
• Power: Energy save mode, continuous working for 46 hours with 2 x AAA alkaline batteries.

4. Setup

4.1 Battery Installation

1. Locate the battery compartment on the back of the device.
2. Open the battery cover.
3. Insert two (2) AAA 1.5V alkaline batteries, ensuring correct polarity.
4. Close the battery cover securely.

4.2 Connecting Fiber Optic Cables

1. Remove the dust cap from the optical port of the KLS-25M or KPM-25M.
2. Clean the fiber optic connector end-face thoroughly using appropriate cleaning tools.
3. Insert the fiber optic connector (SC, FC, ST, or optional LC) into the universal 2.5mm adapter port. Ensure a snug fit.
4. For KLS-25M, connect the fiber to be tested to the output port. For KPM-25M, connect the fiber from the light source to the input port.

5. Operating Instructions

5.1 Powering On/Off

Press and hold the red power button (U) for approximately 2 seconds to turn the device on or off. The device features an automatic shutdown function to conserve battery life.

5.2 KPM-25M Optical Power Meter Operation

1. Wavelength Selection: Press the λ button to cycle through the available calibrated wavelengths (850, 980, 1300, 1310, 1490, 1550, 1625 nm). Select the wavelength matching your light source.
2. Reference Power Setting: Press the REF/dB button to set the current power reading as a reference (0 dB) for relative loss measurements. Press again to switch between absolute (dBm or μW) and relative (dB) measurements.
3. Unit Selection: The device automatically displays power in dBm or μW.
4. Manual Calibration: The KPM-25M supports manual calibration. Refer to the on-screen prompts or detailed manual for specific steps to adjust parameters according to test requirements.
5. Backlight Control: Press the sun icon button to toggle the display backlight on/off.
6. LED Lighting: Press the flashlight icon button to activate the integrated LED light.

5.3 KLS-25M Optical Light Source Operation

1. Wavelength Selection: Press the λ button to select the desired output wavelength (e.g., 1310nm or 1550nm for single-mode).
2. Modulation Frequency: Press the CW/HZ button to cycle through continuous wave (CW) output and modulated frequencies (270Hz, 1KHz, 2KHz).
3. Auto Wave ID: When connected to a compatible KomShine optical power meter, the KLS-25M can transmit an Auto Wave ID signal, allowing the power meter to automatically detect and switch to the correct wavelength.
4. Backlight Control: Press the sun icon button to toggle the display backlight on/off.
5. LED Lighting: Press the flashlight icon button to activate the integrated LED light.

6. Maintenance

6.1 Cleaning Optical Connectors

Regular cleaning of optical connectors is crucial for accurate measurements and device longevity. Use only approved fiber optic cleaning tools and methods. Never use abrasive materials or solvents that could damage the fiber end-face.

6.2 Battery Replacement

When the low power indicator appears on the display, replace the AAA batteries promptly to ensure continuous operation and prevent data loss or inaccurate readings.

6.3 Silicone Protective Case

The removable silicone protective case helps reduce damage from collisions and drops. Ensure it is properly fitted. Clean the case periodically with a soft, damp cloth.

6.4 Storage

Store the device within the specified storage temperature range (-25°C to +70°C for KPM-25M, -70°C to +3°C for KLS-25M-S) and relative humidity (0-95% non-condensing). Always replace dust caps on optical ports when not in use.

7. Troubleshooting

• No Power: Check if batteries are correctly installed and have sufficient charge. Replace if necessary.
• Inaccurate Readings: Ensure optical connectors are clean. Perform manual calibration if parameters seem off. Verify the correct wavelength is selected on the power meter.
• "LO" Display on KPM-25M: This indicates low optical power. Check the light source, fiber connection, or if the fiber is damaged.
• Device Not Responding: Try removing and reinserting the batteries. If the issue persists, contact customer support.

8. Specifications

KPM-25M Optical Power Meter Specifications

KLS-25M Optical Light Source Specifications

9. User Tips

• Cleanliness is Key: Always clean fiber optic connectors before each use. Dust and debris are the leading causes of inaccurate measurements and potential damage to equipment.
• Battery Life: To maximize battery life, utilize the auto power-off feature and turn off the backlight and LED light when not needed.
• Ergonomic Use: The compact and ergonomic design allows for comfortable one-handed operation, making it easy to use in various field conditions.

10. Warranty and Support

Komshine products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the official Komshine website or contact your authorized dealer. Keep your purchase receipt as proof of purchase.