Help
Help
More
Date / Time
Date / Time
xDSL Line Qualification
Settings
Impedance
9,99 kHz
a/b: 0,0 V
a/b: 0,0 V
Return Loss
Balance
NEXT Measurement
Receive Level
Transmit Signal
Spectrum
Wideband Noise
Impulse Noise
3
4
5
6
7
8
9
0
Settings
Start Frequency
800
649
496
5,00 k
1
2
Impedance
End Frequenz
2
3
End Frequency
Hz
00.045.000
5.000 .. 30.000.000 Hz
80,0 k
W
W
8,33 k
11,7 k
15,0 k
Operating Manual
KE3500
xDSL
M
ULTI
T
EST
xDSL Line Qualification
Measurements for physical prequalification of the copper pair
for suitability to use xDSL services.
Settings
In Settings you can find predefined sets of parameters to be
qualified for the DSL line. ADSL 1, 2 and 2 + or VDSL2 with
different frequency ranges for the most common xDSL settings
are stored. The manual entry also allows an individual value
set. The start frequency and end frequency is defined and then
stored. SEL selects the desired parameter.This is then marked
with a hook at the right edge of the screen and is the basis for
the following measurements for line qualification.
No higher service setting (frequency) is required to per-
form the measurements! Disturbances in the high-
frequency range have no influence on the low-frequency
range.
Impedance
In this mode, the line impedance can be measured.
For example, if the input impedance of a device does not match
the impedance of the line, there will be reflections, which
reduces the power transmission and causes a resonance
phenomena, and thus may lead to a non-linear frequency
response.
Measurement method
Select the mode
Impedance
and press
SEL
. The signal can be
transmitted with different impedance values, these can be
selected under F2 Impedance. Min, the lower value and with
Max the upper value of the graphic are pre-defined.
Measurement results
The measurement results are available both graphically and
numerically and are displayed simultaneously. Indicated is the
frequency in Hz and the impedance in ohm.
29
KURTH ELECTRONIC Test & Measurement www.kurthelectronic.de [email protected]
Band
1
<ADSL2+>
<15 kHz>
<45 kHz>
auto
Min
auto
Max
Date / Time
a/b: 0,0 V
Hz
100
W
Impedan.
100
W
120
W
