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Date / Time
TDR
a/b: 0,0 V
START ...
1
Hide Dead Range
Send On Port
Impulse Length autom.
2
3
4
<1>
<Off>
<Off>
Help
Date / Time
TDR
a/b: 0,0 V
0,0 m
48,3 m
96,7 m
145 m
12.5 ns
Pulse
0 dB
Gain
x 1
Y-Zoom
Y(ST)Y_4x2x06
12.5 ns
25 ns
50 ns
100 ns
250 ns
500 ns
1000 ns
2500 ns
0 dB
10 dB
20 dB
30 dB
40 dB
50 dB
56 dB
x 1
x 2
x 3
x 4
x 5
x 6
x 7
x 8
x 9
x 10
Operating Manual
KE3600
xDSL
M
ULTI
T
EST
TDR (Time Domain Reflectometer)
optional
TDR mode works on the pulse-echo method. A measuring
pulse is transmitted through the cable. When the pulse
reaches the end of the cable, or a fault of the cable, a certain
part of the pulse energy is reflected back to the meter.
It measures the time required for the return of the pulse along
the cable, and shows disturbances in the reflection. From that
time, the distance is determined and displayed as a reflection
curve. The shown reflection curve displays all changes in
impedance along the cable. The amplitude of a reflection is
determined by the size of the impedance change.
Finds cable faults such as short circuit, opens, bridge taps, bad
splices, water penetration and other damage such as lightning
strikes, crushed cable etc. which changes the impedance of
the cable. The maximum cable length for testing
telecommunication cables in this case is up to 50,000 feet,
depending on the gauge.
Measurement method
Select the mode TDR and press SEL. In the following screen
you can make settings and set the measuring port. Pressing
the 1 key the numeric keypad starts the measurement
process.The distance to the fault is displayed on the screen
when the cursor is set to the beginning of the fault location
reflected pulse. Under F2 Pulse, the duration of the probe
pulse are set in ns. With Gain under F3, the pulse energy can
be increased. Under F4 Y-Zoom, the illustrated reflection curve
can be magnified up to 10 times.
When transmitting on L1 and measured on L2, opens, ground
fault, etc. can be accurately located (crosstalk).
Press the ◄ / ► buttons to move the yellow pointer and to
detect the exact distance to the cable fault.
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KURTH ELECTRONIC www.kurthelectronic.de [email protected]
