TDR500/3 Comms

Basic Handheld Time Domain Reflectometer

The TDR500/3 is a hand held, compact Time Domain Reflectometer for locating faults on metallic cables. It has a minimum resolution of 0.1 m/0.3 ft and a 5 km/15 kft maximum range depending on velocity factor selected and cable type. Four output impedances are available (25, 50, 75, and 100 Ω) and a velocity factor between 0.2 and 0.99 will meet any cable test requirements The TDR500/3 has a simple selection option which together with a 4 way control switch offers an intuitive operation for the user.

An AUTO selection option ensures that the most effective parameters are selected depending on the range required, aiding rapid diagnosis of the TDR trace. A clear operator controlled cursor allows instant measurement of the distance to the fault.

A trace HOLD feature also allows the operator to hold a trace on the screen, something not seen on most other handheld TDRs. Extra high resolution together with white- light backlight and grey scale tones give the graphical display a vibrancy, aiding the user in identifying key events on the trace.

The enclosure mounts within a standard 3" or 4" wall and houses the iPad in either the portrait or landscape position. The cover can be ordered with or without access to the Home button and a camera to support the specific needs of the installation.

Key Features

• AUTO selection option
• Trace HOLD feature
• Backlit graphics monochrome LCD (256 x 128)
• Adjustable display contrast
• Resolution to 0.1 m
• For use on Telecom TNV-3 circuit, or 150V CAT IV power circuits
• Power blocking filter not required
• Environmental protection to IP54
• 2ns pulse for near end fault location
• AUTO option selecting gain and pulse for each range
• Display distance in meters or feet
• Uses five AA (LR6) primary cells

The Megger TDR500/3 Comms # 1002-227 is manufactured by Megger. Valley Instrument Service is an authorized Megger dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.