1. Product Overview
The COMPTYCO Mini Optical Power Meter is a versatile handheld device designed for fiber optic network installation, maintenance, and troubleshooting. It integrates multiple functions including an optical power meter, RJ45 network test, Visual Fault Locator (VFL), and LED lighting. This compact and lightweight tool is suitable for various field applications.


2. Package Contents
Upon opening the package, please verify that all items are present and in good condition:
- Main Engine (Optical Power Meter)
- USB Charging Cable (for rechargeable models)
- Lanyard/Rope
- Instruction Manual
- Color Box Packaging

3. Setup
3.1 Battery Installation & Charging
The device supports two power supply options depending on the model:
- Rechargeable Lithium Battery Models (e.g., AUA-M5, AUA-M7, AUA-MC5, AUA-MC7 with built-in battery):
- Locate the USB charging port on the device.
- Connect the provided USB charging cable to the device and a suitable USB power adapter.
- During charging, the charging identification light will flash.
- When fully charged, the charging sign will turn off.
- AAA Dry Battery Models (e.g., AUA-M7 Dry battery version):
- Open the battery compartment cover on the back of the device.
- Insert two (2) AAA dry batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.


3.2 RJ45 Tester Extraction
The RJ45 network tester is integrated into the device for portability. To use it:
- Locate the RJ45 tester module on the side of the main unit.
- Press and hold the 'PRESS' key (often located at the bottom of the device) to release the RJ45 remote unit.
- Once released, the remote unit can be separated for testing.

4. Operating Instructions
4.1 Button Functions

- Power Button (①): Press to power on/off. Long press for self-calibration.
- VFL/LED Button (②): Activates Visual Fault Locator (VFL) or LED lighting.
- REF Button (③): Sets the current optical power as a reference value. Used in calibration.
- SAVE Button (④): Saves current measurement data (up to 500 groups).
- dB/RJ45 Button (⑤): Switches between dB and W display for optical power, or activates RJ45 network test mode.
- Wavelength Button (⑥): Cycles through available wavelengths (850nm, 980nm, 1270nm, 1300nm, 1310nm, 1490nm, 1550nm, 1577nm, 1625nm, 1650nm).
- PRESS Button (⑦): Used to release the RJ45 remote unit.
- Display (⑧): Shows measurement readings, wavelength, battery status, etc.
- Protective Cover (⑨): Covers the optical port.
- LED Lights (⑩): Provides illumination.
- Receiver (⑪): Optical power input port.
- Rope Hanging Hole (⑫): For attaching the lanyard.
4.2 Optical Power Measurement
- Power on the device.
- Connect the fiber optic cable to the appropriate interface (FC, ST, or LC adapter if needed) on the meter's receiver port.
- Press the Wavelength button (⑥) to select the desired wavelength (e.g., 1310nm, 1550nm).
- The display will show the optical power in dBm and nW.
- To set a reference value, press the REF button (③). Subsequent measurements will show the relative power loss.
- To save data, press the SAVE button (④). The device can store up to 500 groups of data.

4.3 RJ45 Network Test
- Extract the RJ45 remote unit as described in Section 3.2.
- Connect one end of the RJ45 cable to the main unit's RJ45 port and the other end to the remote unit's RJ45 port.
- Press the dB/RJ45 button (⑤) to enter network test mode.
- The display will show the wiring status (1-8 indicators) for continuity and correct pairing.
4.4 VFL (Visual Fault Locator)
The VFL function emits a visible red laser to help locate breaks, bends, or faulty connectors in fiber optic cables.
- Ensure the optical port is clean and connect the fiber to be tested.
- Press the VFL/LED button (②) to activate the VFL.
- Observe the fiber for red light leakage, which indicates a fault.
4.5 LED Lighting
For working in low-light conditions, the device includes an LED light.
- Press the VFL/LED button (②) to toggle the LED light on/off.

4.6 Self-Calibration
The device supports user self-service calibration for improved accuracy.
- From a shutdown state, long press the power button (①) to enter the calibration interface after startup.
- Press the Wavelength button (⑥) for 2 seconds to enter the calibration function.
- The REF button (③) increases the value by 0.1dB.
- The dB/RJ45 button (⑤) reduces the value by 0.1dB.
- Press the short power button (①) to save and exit.
4.7 Automatic Shutdown
To conserve battery life, the device features an intelligent shutdown function. If left idle for 10 minutes, it will automatically power off.
5. Maintenance
- Cleaning: Regularly clean the optical interface ports with a lint-free swab and appropriate fiber optic cleaning solution to ensure accurate measurements. Keep the protective cover on when not in use.
- Battery Care: For rechargeable models, charge the battery fully before long periods of storage. For dry battery models, remove batteries if the device will not be used for an extended time to prevent leakage.
- Storage: Store the device in a cool, dry place, away from direct sunlight and extreme temperatures. The rubber-coated design provides some protection against accidental drops.
- Handling: Avoid dropping or subjecting the device to strong impacts.
6. Troubleshooting
- Device does not power on: Check battery level. Recharge the lithium battery or replace the AAA dry batteries.
- Inaccurate optical power readings: Ensure fiber optic connectors and the meter's optical port are clean. Verify the correct wavelength is selected. Perform self-calibration if necessary.
- VFL not working: Check if the VFL function is activated. Ensure the fiber connection is secure.
- RJ45 test failure: Ensure both ends of the network cable are properly connected to the main unit and the remote unit. Check the cable for visible damage.
7. Specifications

| Feature | Specification |
|---|---|
| Power Measurement Range | -70~+10dBm / -50~+26dBm (model dependent) |
| Probe Type | InGaAs |
| Wavelength Range | 800 ~ 1700nm |
| Standard Wavelengths (NM) | 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 |
| Display Resolution | LINEAR DISPLAY: 0.1% logarithmic display: 0.01 dbm |
| Operating Temperature | -10 ~ +60°C |
| Storage Temperature | -25 ~ +70°C |
| Automatic Shutdown Time | 10 minutes |
| Contour Dimension (mm) | 111 × 69 × 30 |
| Power Supply | Rechargeable lithium battery or 2 x AAA Alkaline Batteries |
| Optical Accuracy | ±0.2dB (manually calibrated) |
| Fiber Type | Single Mode |
| Connector Type | SC/UPC (FC, ST, LC optional via adapters) |

8. User Tips
- Portability: The device is designed to be small and lightweight, making it easy to carry in a pocket or backpack for on-the-go testing. Utilize the included lanyard for convenient access during work.
- Durability: The rubber-coated anti-falling design helps protect the device from minor impacts, enhancing its longevity in field environments.
- Fault Detection: Leverage the integrated VFL function for quick and effective visual identification of fiber optic cable faults such as breaks or tight bends.
- Battery Management: For models using AAA batteries, consider carrying spare batteries for uninterrupted work. For rechargeable models, ensure it's fully charged before critical tasks.

9. Warranty and Support
For any technical assistance, warranty claims, or support inquiries regarding your COMPTYCO Mini Optical Power Meter, please contact the seller or manufacturer directly. Refer to your purchase documentation for specific warranty terms and contact information.