22 Copper tests
ARGUS 152
331
Display the quiet level noise (QLN) for
each tone. The QLN displays the quiet
level noise of the wire pair as function of
the frequency:
y-axis: QLN in dBm/Hz
x-axis: tones (channels)
Based on the QLN it is possible to detect
narrow-band interference caused by, for
example, a medium-wave radio station or
a defective switching power supply. Such
interference will appear as small peaks.
Display of the amplitude component of the
transfer function (HLOG) for each tone.
The HLOG shows the attenuation of a line
for each frequency.
y-axis: Hlog in dB
x-axis: tones (channels)
<Menu>
Opens the graphic functions
(see page 50).
Continuation on
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