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| Diagnostics
C
11
HAPTER
Diagnostics Test
D
T
IAGNOSTICS
EST
Loop Attenuation (dB) — Displays the attentuation of the link to the
◆
ADSL Router and the service provider in decibels.
Signal Attenuation (dB) — Displays the signal attentuation of the
◆
link which determines the frequency in decibels.
SNR Margin (dB) — Displays the signal-to-noise ratio of the link in
◆
dedibels.
Attainable Rate (Kbps) — Displays the attainable rate of the link to
◆
the service provider in kilobits per second.
◆
Output Power (dBm) — Displays the output power of the unit in
decibels per milliwatt.
Tone Number — Displays the tone number of the ADSL signal.
◆
(Range: 0~255)
H.Real — Displays the real part of channel transfer function of each
◆
subcarrier.
H.Image — Displays the imaginary part of channel transfer function of
◆
each subcarrier.
SNR — Displays the SNR (Singal to Noise Ratio) of each subcarrier
◆
expressed in decibels.
QLN — Displays the Quite Line Noise of each subcarrier, expressed in
◆
dBm/Hz.
Hlog — Displays the amplitude response of channel transfer function of
◆
each subcarrier, expressed in decibels.
The diagnostic test shows the test results for the connectivity of the
physical layer and protocol layer for both LAN and WAN sides.
Figure 81: Diagnostics Test
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