Spectrum
With the Spectrum analysis, it is possible to examine the
spectral noise across the DSL frequency range.
Measurement method
Select the operating mode Spectrum and press SEL.
In the following screen, the Start Frequency, End Frequency,
Impedance and whether the Termination ”On” or ”Off” is set.
Pressing the 1 key of the numeric keypad starts the
measurement process.
Under F1 Mode, the waveform between Peak (maximum),
Mean (Average measurement) and Normal (Peak + Mean)
can be switched. Min, the lower value and with Max the
upper value of the graphic are pre-defined.
Measurement result
The measurement results are available both graphically and
numerically and are displayed simultaneously. Given the
frequency in Hz and the level in dBm or dBm / Hz, whichever
was selected from F2 Unit.
Wideband Noise
The transmitted signal of the subscriber lines is disturbed by
noise which reduces the data transmission capacity.
Contributors to noise include balance faults, crosstalk and
poor connections to the switched telephone lines. The noise
level is shown as single value, in dBm.
Measurement method
Select the mode Wideband Noise and press SEL. The signal
can be transmitted with different impedance values, these
can be selected with F2 Impedance. With F3 Filter the
different DSL filters are adjustable.
Measurement results
The measurement result is displayed numerically in dBm.
Mode
Date / Time
Spectrum
Frequency 240,6 kHz
a/b: 0,0 V
0
-115
25,00 kHz
Level -107,20 dBm
dBm
8,33 kHz
11,7 kHz
15,0 kHz
Unit
Min
Max
Help
Date / Time
Spectrum
a/b: 0,0 V
START ...
1
Start Frequency
End Frequency
Impedanc
Termination
2
3
4
5
Start Frequency
Hz
00.025.000
5.000 .. 30.000.000 Hz
<100>
<Aus>
<25,0 kHz>
<30,0 MHz>
Operating Manual
KE3600
xDSL
M
ULTI
T
EST
Help
Date / Time
Wideband Noise
a/b: 0,0 V
100
W
Impedan.
-82,01 dBm
ADSL
Filter
Y(ST)Y_4x2x06
32
KURTH ELECTRONIC www.kurthelectronic.de [email protected]
