TDM45 - Measuring equipment Megger - Free user manual and instructions
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| Product Type | Time Domain Reflectometer (TDR) |
| Brand | Megger |
| Model | TDM45 |
| Category | Measuring Equipment |
| Dimensions (approx.) | 250 x 150 x 70 mm |
| Weight (approx.) | 1.2 kg |
| Power Supply | Rechargeable Li-Ion battery, 7.4V, with mains charger |
| Display | Backlit LCD, high contrast |
| Measurement Range | Up to 30 km (depending on cable type and condition) |
| Resolution | 0.1 m |
| Pulse Width | Programmable (e.g., 50 ns to 2 µs) |
| Output Impedance | 50 ohms |
| Internal Memory | Stores up to 100 traces |
| Data Connectivity | USB for data transfer to PC |
| Protection Class | IP54 (dust and splash proof) |
| Operating Temperature | -10°C to +50°C |
| Storage Temperature | -20°C to +60°C |
| Included Accessories | Test leads, charger, soft carry case, user manual |
| Maintenance | Clean with a dry cloth; do not use solvents |
| Safety Compliance | IEC 61010-1, CAT III 600V |
| Spare Parts Availability | Available from Megger authorized service centers |
| Repairability | Designed for service by qualified personnel only |
| Manufacturer | Megger, United Kingdom |
| Warranty | 3 years (typical) |
Frequently Asked Questions - TDM45 Megger
What is the Megger TDM45 used for?
The Megger TDM45 is a Time Domain Reflectometer (TDR) used to locate faults and measure length in metallic cables such as twisted pair, coaxial, and power cables.
How do I connect the TDM45 to a cable for testing?
Use the supplied test leads to connect the TDM45's output port to the cable under test. Ensure the cable is de-energized and properly terminated if required.
What battery type does the TDM45 use and how long does it last?
It uses a rechargeable Li-Ion battery (7.4V). Typical battery life is about 8 hours of continuous use, but it varies with backlight and pulse settings.
Can the TDM45 store test traces?
Yes, it can store up to 100 traces in internal memory. Traces can be recalled, compared, and downloaded via USB to a PC for analysis.
What is the maximum cable length the TDM45 can measure?
The maximum range is up to 30 km depending on cable type, condition, and the pulse width selected. For best accuracy, use the appropriate pulse width for the cable length.
How do I maintain the TDM45?
Keep the unit clean with a dry or slightly damp cloth. Avoid solvents. Store in a dry place. Charge the battery regularly if not used for long periods to prolong battery life.
What safety precautions should I take when using the TDM45?
Always ensure the cable under test is de-energized and safe to connect. The TDM45 is rated CAT III 600V for transient overvoltage protection. Do not use in hazardous environments.
Does the TDM45 require calibration?
Yes, periodic calibration is recommended to maintain accuracy. Contact Megger service centers for calibration services. The device is designed to be stable, but annual calibration is typical.
What accessories are included with the TDM45?
The package includes test leads, a mains charger, a soft carry case, and a user manual. Optional accessories like a more robust carry case or additional adapters are available separately.
Can I download traces from the TDM45 to a PC?
Yes, connect the TDM45 to a PC via the USB port. Use Megger's software (included or downloadable) to transfer, view, and analyze stored traces.
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USER MANUAL TDM45 Megger
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Product information
Brand : Megger
Model : TDM45
Category : Measuring equipment