1. Introduction
The POMIACAM MOT-51 is a versatile Multifunction OTDR Tester designed for comprehensive fiber optic and network cable analysis. Featuring a 5.55-inch OLED touch screen, it integrates various testing capabilities including OTDR, Optical Power Meter (OPM), Visual Fault Locator (VFL), Laser Source (LS), Optical Loss Test, UTP Cable Test, RJ45 TDR Test, Cable Length Measurement, and advanced network tools like PING. This manual provides detailed instructions to help you effectively use and maintain your MOT-51 tester.

Figure 1: MOT-51 Multifunction OTDR Tester
2. Key Features
- Display: 5.55-inch OLED touch screen with 1280*720 resolution.
- OTDR Capabilities: Supports 1310/1550/1610nm wavelengths (optional) with 26/24dB dynamic range (optional), and a maximum test range of 100KM.
- Stable Laser Source: Supports CW/270/330/1000/2000Hz modes.
- Integrated Tools: Optical Power Meter (OPM) and Visual Fault Locator (VFL).
- Fiber Analysis: Tests fiber length, loss, attenuation parameters, and provides event maps to locate connection/fusion points.
- Automated Analysis: Automatic analysis of various linkers/fusion points for easy event analysis.
- Data Management: Save and view testing curves with zoom and move functions. Supports saving over 30,000 curves.
- Reporting: Generates test reports including curve trajectory graphs, parameter settings, fiber event information, and fiber link information. Reports can be saved as EXCEL, PDF, or screenshots.
- Cable Testing: Improved cable tester for UTP and telephone cables, including sequence and continuity tests. Detects near-end, mid-end, and far-end faults for RJ45 cable plugs.
- RJ45 TDR Test: Tests cable pair status and length, with a maximum test length of 600M (optional).
- Cable Length Measurement: Measures length for BNC, network, telephone, RVV, elevator, and Cat 5/6 cables. Maximum measurement for cable open is 1.5KM.
- Network Tools: Includes PING test, LLDP, Port Flashing, DHCP Server, IP address scanning, and Socket Tool.
- Power Output: USB 5V 1A power output, functioning as a power bank.
- Connectivity: FTP server for data transfer and online update capability.
- Battery: 3.7V 4000mAh Li-ion Battery, providing 6 hours of normal working time with 3.5 hours charging.
3. Package Contents
The MOT-51 Tester package typically includes the following items:
- MOT-51 Main Unit
- Outer Box
- Tool Kit
- Rechargeable Battery
- Type-C Charging Cable
- Test Report (Documentation)
- Network Cable Test Kit (Cable Tracer)

Figure 2: Included Accessories
4. Setup
4.1 Device Overview and Interfaces

Figure 3: Top and Bottom Interfaces of the MOT-51
Top Panel Interfaces:
- Power Button: For turning the device on/off.
- Network Testing Port (LAN/RJ45 TDR): For connecting RJ45 cables for network tests.
- VLS (Visual Fault Locator): Port for connecting fiber optic cables for VFL function.
- OPM (Optical Power Meter): Port for connecting fiber optic cables for OPM function.
- OTDR/LS (Optical Time Domain Reflectometer / Laser Source): Port for connecting fiber optic cables for OTDR and Laser Source functions.
- LED Lamp: Integrated light source.
Bottom Panel Interfaces:
- Type-C DC5V/2A Input: For charging the device.
- UTP/SCAN: Port for UTP cable scanning.
- Micro SD Card Slot: For expanding storage.
- DC5V 1A Output (USB): USB port for power output (power bank function).
- RS 485 Port: For serial communication.
4.2 Battery Installation and Charging
- Ensure the device is powered off.
- Locate the battery compartment on the underside of the device.
- Insert the provided 3.7V 4000mAh Li-ion battery, ensuring correct polarity.
- Close the battery compartment securely.
- Connect the Type-C charging cable to the DC5V/2A input port and a suitable power adapter to charge the device. A full charge takes approximately 3.5 hours.
4.3 Power On/Off
- Power On: Press and hold the Power Button on the top panel until the screen illuminates.
- Power Off: Press and hold the Power Button until a power-off prompt appears on the screen, then confirm.
5. Operating Instructions
The MOT-51 features a user-friendly 5.55-inch OLED touch screen interface. Navigate through the functions by tapping the corresponding icons.
Video 1: Product Overview and Function Demonstration
5.1 OTDR Test
- Connect the fiber optic cable to the OTDR/LS port. Ensure the connector type (SC/FC-PC) matches.
- From the main menu, tap the 'OTDR' icon.
- On the OTDR screen, you can manually set parameters or use the 'Auto OTDR' function.
- Manual Setup: Select the desired Wavelength (1310nm, 1550nm, or 1610nm), Range, and Pulse Width.
- Quick Setup: Use the 'Quick Setup' option to quickly adjust wavelength, dynamic range, pulse, and measurement duration.
- Tap 'Start' to begin the test.
- The device will display the fiber trace, event list, and other parameters.
- Event Map: Tap 'Event Map' to view an automatic analysis of connectors and fusion points along the fiber link. This provides a simplified graphical representation of events.
- Trace Info: View detailed trace information.
- AB Ruler: Use the AB ruler to measure loss, distance, and attenuation of specific sections.
- Save Data: Tap 'Save Data' or 'Quick Save' to store the current curve file.
- Test Report: Generate a comprehensive test report by tapping 'Testing report'. Reports can be saved in EXCEL, PDF, or screenshot formats.

Figure 4: Auto OTDR Test and AB Ruler Display

Figure 5: OTDR Event Map Display

Figure 6: Example of an OTDR Test Report
5.2 Optical Power Meter (OPM)
- Connect the fiber optic cable to the OPM port.
- From the main menu, tap the 'OPM' icon.
- Select the desired Wavelength (850, 1300, 1310, 1490, 1550, or 1625nm).
- The screen will display the optical power in dBm.
- Use 'Hold Data' to freeze the current reading, 'Difference' for relative measurements, and 'Calibrate' for adjustment.

Figure 7: Optical Power Meter Interface
5.3 Visual Fault Locator (VFL)
- Connect the fiber optic cable to the VLS port.
- From the main menu, tap the 'VFL' icon.
- A warning will appear: "Visible laser light source, damage to the eyes, to avoid eye injury." Exercise caution and avoid direct eye exposure.
- Select the desired mode: 'Steady mode' for continuous light, 'Evasive 1Hz' or 'Evasive 2Hz' for flashing light.
- The VFL emits a 650nm red laser to identify breaks, bends, or poor connections in fiber optic cables up to 8KM.

Figure 8: Visual Fault Locator Interface and Operation
5.4 Laser Source (LS)
- Connect the fiber optic cable to the OTDR/LS port.
- From the main menu, tap the 'Laser Source' icon.
- The output wavelength will be the same as the OTDR.
- Select the desired mode: CW (Continuous Wave), 270Hz, 330Hz, 1000Hz, or 2000Hz.

Figure 9: Laser Source Interface
5.5 Optical Loss Test
- Connect one end of the fiber to the OTDR/LS port and the other end to the OPM port.
- From the main menu, tap the 'Optical Loss Test' icon.
- The device will measure the insertion loss of optical passive devices.

Figure 10: Optical Loss Test Setup and Display
5.6 UTP Cable Test (Cable Tracer/Tester/Electroscope)
- Connect one end of the RJ45 cable to the LAN/RJ45 TDR port on the MOT-51 and the other end to the Network Cable Test Kit (Cable Tracer).
- From the main menu, tap the 'Cable Tester' icon.
- The device will test the cable sequence, continuity, and status.
- It can detect near-end, mid-end, and far-end fault points of the RJ45 cable plug.
- The integrated electroscope function can identify neutral/live wires and detect strong electric signals with visual and audible alarms.

Figure 11: Cable Tracing and Electroscope Functionality

Figure 12: Detailed Features of Cable Tracer and Electroscope

Figure 13: Network Cable Detection and Fault Judgment
5.7 RJ45 Cable TDR Test
- Connect the RJ45 cable to the LAN/RJ45 TDR port.
- From the main menu, tap the 'RJ45 TDR Test' icon.
- The device will test the length, attenuation, and status of the network cable, with a maximum test length of 600M.

Figure 14: RJ45 Cable TDR Test Interface
5.8 Cable Length Measurement
- Connect the cable (BNC, network, telephone, RVV, elevator, Cat 5/6) to the appropriate port (e.g., LAN/RJ45 TDR for network cables).
- From the main menu, tap the 'Cable Length' icon.
- The device can measure cable length, with a maximum measurement for cable open of 1.5KM.
5.9 Advanced Network Tools
The MOT-51 includes several advanced network diagnostic tools:
- PING Test: Allows you to check network connectivity and latency by sending ICMP packets to a specified IP address.
- Port Flashing: Helps identify network ports by flashing the link light on the connected switch.
- LLDP (Link Layer Discovery Protocol): Gathers information about connected network devices.
- DHCP Server: Functionality for DHCP server testing.
- IP Address Scanning: Scans for active IP addresses on the network.
- Socket Tool: Provides tools for socket-level network diagnostics.

Figure 15: Network Testing Interface and Capabilities
5.10 Data Management and Transfer
- File Management: Access saved test curves and reports via the 'File Manager' icon. Files are stored in internal storage or on a Micro SD card.
- FTP Server: The device supports FTP data transfer. Activate the FTP server function and follow the on-screen instructions to access files from a computer.
- U Disk Copy: Connect a USB drive to the USB 5V 1A output port and use the 'U disk copy' function in File Manager to transfer data.

Figure 16: File Management Interface

Figure 17: Quick Save and Parameter Setting Interfaces
6. Maintenance
- Cleaning: Keep the screen and device body clean using a soft, dry cloth. Avoid abrasive cleaners or solvents.
- Port Protection: Always keep the fiber optic ports covered with dust caps when not in use to prevent contamination, which can affect measurement accuracy.
- Battery Care: Charge the battery regularly, even if the device is not in frequent use, to maintain battery health. Avoid fully discharging the battery for extended periods.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Software Updates: Periodically check for and install software updates via the online update function to ensure optimal performance and access to new features.
7. Troubleshooting
- Device Not Powering On: Ensure the battery is correctly installed and sufficiently charged. Connect the charger and try again.
- Inaccurate Measurements: Check that fiber optic connectors are clean and properly seated. Ensure correct test parameters (wavelength, range, pulse width) are selected for the specific fiber being tested.
- VFL Warning: The VFL emits a visible laser. Always heed the on-screen warning: "Visible laser light source, damage to the eyes, to avoid eye injury." Never look directly into the fiber output or VFL port when active.
- Network Test Issues: Verify that network cables are correctly connected and undamaged. Check the network configuration (IP addresses, subnet masks) if performing PING tests.
- Data Transfer Problems: Ensure the FTP server is active and the correct IP address is used. For U disk copy, ensure the USB drive is properly formatted and recognized by the device.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | MOT-51 |
| Brand Name | POMIACAM |
| Screen | 5.55 inch LCD screen, 1280*720 resolution |
| OTDR Interface Type | SC/FC-PC |
| Fiber Testing Range | Max 100KM |
| Dynamic Range | 26/24dB (Optional) |
| Wavelength | 1310/1550/1610nm (Optional) |
| Optical Power Meter | Support (Wavelengths: 850/1300/1310/1490/1550/1625nm, Power Range: -70~+6dBm) |
| Visual Fault Locator | Support (Wavelength: 650nm, Max Test Range: 8KM) |
| Laser Source | Support (CW/270/330/1000/2000Hz modes) |
| Optical Loss Test | Support |
| UTP Cable Test | Test cable sequence, status and cable remote |
| RJ45 Cable TDR Test | Max 600M |
| Cable Length Measurement | Max 3KM (for open measurement) |
| Battery | 3.7V 4000mAh Li-ion |
| Event Blind Zone | ≤1.6m |
| Attenuation Blind Zone | ≤8m |
| Linearity | ±0.05 dB/dB |
| Loss Threshold | 0.05 |
| Loss Resolution Ratio | 0.01 |
| Sampling Resolution Ratio | 0.125-8 |
| Sampling Point | 32K |
| Distance Uncertainty | ±(1m + 5x10⁻⁵ x distance + sampling interval) |
| Distance Scope (km) | 0.5, 1, 2, 5, 10, 25, 50, 100, 200 |
| Typical Real-time Refreshing Duration | 1s |
| Measurement Duration | 5sec, 10sec, 15sec, 30sec, 1min, 2min, 3min (selectable) |
Note: Technical specifications describe the ensured performance of the instrument when using typical PC model connectors, without considering uncertainty caused by optical fiber refractivity. Dynamic range is measured under specific conditions (100km/10240ns/3min). Blind zone conditions: reflection event is within 10km, reflection strength <-45dB. Measured by minimum pulse width.
9. User Tips
- Safety First: Always exercise extreme caution when using the Visual Fault Locator (VFL) and Laser Source (LS) functions. Never look directly into the fiber optic output or VFL port as the laser light can cause permanent eye damage.
- Cleanliness is Key: Ensure all fiber optic connectors and ports are meticulously clean before making any connections. Dust and debris are common causes of inaccurate measurements and can damage equipment.
- Regular Calibration: For critical measurements, consider performing regular calibration checks for the Optical Power Meter to ensure accuracy.
- Firmware Updates: Keep your device's firmware updated to benefit from performance improvements, bug fixes, and new features.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.





