Megger TDR900 TDR Cable Fault Locator, 3.7km

  • RS Stock No. 764-2838
  • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. TDR900
  • ผู้ผลิต / Manufacturer Megger
ข้อมูลทางเทคนิค / Technical Data Sheets
Legislation and Compliance
RoHS Certificate of Compliance
รายละเอียดสินค้า / Product Details

Megger TDR 900 Handheld Time Domain Reflectometer/Cable Length Meter

The Megger TDR 900 handheld time domain reflectometer/cable length meter has a measurement range that spans from 15ft (5m) to 10,000ft (3km) with a minimum resolution of 20in (50cm). This is an advanced instrument, capable of measuring cable lengths and finding the distance to an open or a short using time-domain reflectometry. It offers exceptional features and a range capability, normally associated with far more expensive instruments. This can be used for any cable consisting of at least two insulated metallic elements, one of which may be the sheath or shield of the cable. The meter has automatic internal matching networks to allow testing of 25, 50, 75, 100, 125, or 150 cables. (These correspond to power, telephony, CATV, and LAN cables).

Features and Benefits

Accurate to 20in (50cm) throughout the entire range
Extra-large backlit (ICON type 7 segment) LCD
Automatic output impedance control, auto-range, auto-zero, and auto-sensitivity allows for closely matching to a wide range of cables under test.
Only V. O. P (velocity of propagation) settings required
Displays cable length if the cable’s V. O. P (velocity of propagation) is known or displays V. O. P (velocity of propagation) if a cable’s length is known
Automatic output impedance control of 25ohm, 50ohm, 75ohm, 100ohm, 125ohm or 150ohm
20 internal memory locations store up to 20 custom cable
Internal library of 39 standard cables allow for quick and easy measurements for industry standard cable types
Tone generator (oscillating 910Hz to 1100Hz 5V peak to peak) for cable identification and tracing
Line Voltage Detection: displays “OUCH” message and stops operation if the line voltage exceeds 6.5V
Safety protection (up to 250V RMS)
Operating temperature ranges between-18°C and 60°C


Street lighting cable runs
Outside broadcasting: Check temporary cable installations
Studio broadcasting: Trailing camera cables
Cable drops from aerials and antenna
Stocktaking: measure cable lengths in stock


IEC 61010-1
BS/EN 61326-1

คุณสมบัติ / Specifications
คุณสมบัติ Value
Maximum Range 3.7km
Resolution 50 cm
Cable Type CATV Cable, LAN Cable, Power Cable, Telephone Cable
Maximum Pulse Width 1100Hz
Minimum Pulse Width 910Hz
Pulse Amplitude 5V Pk-Pk
Output Impedance 25 Ω, 50 Ω, 75 Ω, 100 Ω, 125 Ω, 150 Ω
Velocity Factor/Propagation Velocity 99.9%
Battery Life 5000 tests
Battery Type AA
Display Type LCD
Power Source Battery
Maximum Operating Temperature +60°C
Weight 450g
Model Number p TDR900
Width 44mm
Minimum Operating Temperature -18°C
Height 235mm
Length 100mm
Dimensions 100 x 44 x 235mm