Megger CFL510G Specifications
Hand-held Time Domain Reflectometer
CFL510G
Hand-held Time Domain Reflectometer
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Dual cursors for pinpointing faults
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Auto set-up for instant use
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2 ns pulse width virtually eliminates
dead zones
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Unique trace HOLD feature for
comparison between cables
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IP54 rating
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Designed for use on all metallic cable
pairs
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Three-year warranty
CFL510G
DESCRIPTION
The CFL510G 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/15,000 ft
maximum range depending on velocity factor selected and
cable type.
Four output impedances (25, 50, 75, and 100 Ω) are
available and a velocity factor between 0.2 and 0.99 will
meet any cable test requirements.
The CFL510G has a simple selection option which, together
with a four-way control switch, offers an intuitive operation
for the user.
APPLICATIONS
This CFL510G is primarily designed for linemen in both the
communication and power industries. Specific capabilities
include:
Telephony
Provides fast and accurate results when uncovering
transmission related problems. Designed to be carried on a
linesman’s belt and used in the first line of defense when
diagnosing and locating cable faults.
Specific line activities identified by this unit include:
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Bridge taps and splices
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Presence of water in the cable
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Opens in tip, ring, or sheath
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Shorts between tip, ring, and/or sheath
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Capacitive networks
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Load coils
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Wet splices and high-resistance splices
CATV/Cellular
Ideal for testing the physical integrity of cables within a
network. The unit is also capable of locating illegal cable
taps.
Specific cable conditions identified include:
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Bends or crimps in the cable
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Cuts or shorts in the cable
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Taps and splits
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Water saturation
Power
An ideal tool for identifying faults on secondary power
cables. This unit identifies:
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Burnouts in aluminum conductors
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Good splices, wet splices, and high-resistance splices
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Shorts between phases
CFL510G
Hand-held Time Domain Reflectometer
FEATURES AND BENEFITS
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An AUTO selection option ensures that the most effective
parameters are chosen, depending on the range required,
aiding rapid diagnosis of the TDR trace.
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Dual cursors allow complete flexibility, giving the user
full control and instant indication of distance between
two points.
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A unique, easy one-button press and HOLD feature
allows comparison between cable conditions.
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Extra high resolution, a white-light backlight, and
grayscale tones gives a vibrant graphical display, useful
in identifying key events on the trace.
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Additional features include:
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Backlit graphics monochrome LCD (256 x 128)
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Adjustable display contrast
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Resolution to 0.1 m
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For use on telecom circuit or 150 V CATIV power
circuit
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Power blocking filter not required
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Environmental protection to IP54
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Auto selected output impedance (between 25, 50, 75
and 100 ohms)
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2 ns pulse for near-end fault location
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AUTO option selecting gain and pulse for each range
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Display distance in meters or feet
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Uses five AA (LR6) batteries
SPECIFICATIONS
Except where otherwise stated, this specification applies at an
ambient temperature of 68o F (20o C).
General
Ranges
30 ft, 75 ft, 300 ft, 750 ft, 3000 ft, 7500 ft, and 15,000 ft
(10 m, 25 m, 100 m, 250 m, 1000 m, 2500 m, and 5000 m)
Accuracy
±1% of range ± pixel at 0.67 VF
(The measurement accuracy is for the indicated cursor position
only and is conditional on the velocity factory being correct.)
Input Protection
Complies with IEC61010-1 for connection to live systems up to
150 V CAT IV when used with the optional fused test lead set.
Output Pulse
5 V peak to peak into open circuit. Pulse widths determined by
range and cable.
Gain
Set for each range with three user selectable steps (in manual
operating mode)
Velocity Factor
Variable from 0.2 to 0.99 in steps of 0.01
TX Null
Automatic
Refresh Rate
3 per second
Power Down
Automatic after 5 minutes with no key press
Backlight
Stays on for one minute with no key press
Power
Five AA (LR6) type batteries, manganese-alkali or nickel metaldydride cells
Battery Life
Up to 14 hours (typical)
Mechanical
Designed for indoor or outdoor use, rated to IP54
Case Dimensions
9 in. x 4.5 in. x 2 in. (230 mm x 115 mm x 48 mm)
Instrument Weight
1.32 lbs (0.6 kg)
Case Material
ABS
Connectors
Two 4 mm-safety terminals
Display
256 x 128 pixels, graphics LCD
Environmental
Operational Temperature: 5o F to 122o F (-15o C to +50o C)
Storage Temperature: -4o F to +158o F (-20o C to +70o C)
Safety
When using the optional fused test lead set, the instrument
complies with IEC61010-1 for connections to live systems with less
than 300 V between the terminals and up to 150 V CAT IV to earth
EMC
Complies with Electromagnetic Compatibility Specifications
(light industrial) BS/EN61326-1, with a minimum performance of
“B” for all immunity tests
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