Buy BlackBox CLM-FF, Cable Length Meter with Fault Finding

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Cable Length Meter with Fault Finding. Measure and find faults in data, power, and communications/video cable.

Quick Facts

Determines cable length with 1% accuracy, identifies cable faults, and can be calibrated to the Nominal Velocity of Propagation (NVP) for any cable.
Holds up to two different NVP values for multiple cable tests.
Tests length, opens, or shorts present on voice, data, and video cables up to 3000 feet long.
Spread Spectrum Time Domain Reflectometry (SSTDR) works in all wire environments and is immune to voltage, current, or data disruptions.

Further Details

Produces four different tones for locating cables.
Able to measure cables with voltage.
Stores up to two NVP values.
Features an extra-large, backlit LCD screen with icons that clearly display test results.
Tests any copper cable including data, voice, video, lamp wire, and Romex.
Discovers NVP value for cables with known lengths.
Performs automatic pre-test voltage checks.
Conserves power and supports long battery life with Auto-off feature and battery life indicator.

We aim to show you accurate product information. Here you will find what the manufacturers have provided us with. See our disclaimer.

Technical Details

Common Cable Length Ranges	Coaxial cable: 0-2000 feet Data cable: 0-1500 feet Electrical cable: 0-1000 feet
Input Protection	To 400 volts peak 50/60 Hz AC or DC (60V peak AC or DC). Measurement continues while warning is displayed
Maximum Length	3000 feet on cables with low attenuation
Measurement Method	Spread spectrum time-domain reflectometry (SSTDR)
NVP (VOP) Range	20.0 to 99.9%
NVP Accuracy Range	±1% with known NVP and consistent cable parameters
Operating Environment	Operating temperature: +32 to +122° F (0 to +50° C) Storage temperature: -4 to +140° F (-20 to +60° C) Humidity: 10 to 90%, noncondensing Altitude: 10,000 ft. (3050 m) maximum
Tone Generation	(4) selectable tone cadences centered on 1 kHz; constant output amplitude of 3 Vp-p
Voltage Warning	At maximum of Safety Extra Low Voltage limits (60V peak AC or DC)
CE Approval	Yes
Power	(4) AA alkaline batteries; Standby: 4 years Active: 15 hours average
Size	6.8"H x 3.15"W x 1.3"D (17.3 x 8 x 3.3 cm)
Weight	12 oz. (340 g) with battery

Common Cable Length Ranges	Coaxial cable: 0-2000 feet Data cable: 0-1500 feet Electrical cable: 0-1000 feet
Input Protection	To 400 volts peak 50/60 Hz AC or DC (60V peak AC or DC). Measurement continues while warning is displayed
Maximum Length	3000 feet on cables with low attenuation
Measurement Method	Spread spectrum time-domain reflectometry (SSTDR)
NVP (VOP) Range	20.0 to 99.9%
NVP Accuracy Range	±1% with known NVP and consistent cable parameters
Operating Environment	Operating temperature: +32 to +122° F (0 to +50° C) Storage temperature: -4 to +140° F (-20 to +60° C) Humidity: 10 to 90%, noncondensing Altitude: 10,000 ft. (3050 m) maximum
Tone Generation	(4) selectable tone cadences centered on 1 kHz; constant output amplitude of 3 Vp-p
Voltage Warning	At maximum of Safety Extra Low Voltage limits (60V peak AC or DC)
CE Approval	Yes
Power	(4) AA alkaline batteries; Standby: 4 years Active: 15 hours average
Size	6.8"H x 3.15"W x 1.3"D (17.3 x 8 x 3.3 cm)
Weight	12 oz. (340 g) with battery

Note: Please read description carefully. Do not base your order on the picture presented.