Signal Results - JDS Uniphase HST-3000 User Manual

Chapter 3 Interpreting Test Results
Modem emulate results

Signal results

68
This category, shown in
about the VDSL link.
Figure 5 Signal results screen (Conexant)
Table 15 describes the signal results.
Table 15 VDSL signal results
Result
Noise Margin
Attenuation
(Signal Atten
and Line Atten
for Infineon SIM)
TX Power
Interleave Delay
HST-3000 VDSL Testing User's Guide
Figure 5, provides more information
Description
The dB value ratio of signal strength to
noise for upstream and downstream. This
result represents how many more dB of
noise or reduction of transmit signal the
connection can tolerate and still maintain
a bet error rate of 10-7.
The degradation of signal strength in dB
upstream and downstream. It is the differ-
ence in Tx power from the transmitter to
receiver. (Signal Atten is for the actual sig-
nal, Line Atten is for the entire line.)
Power level, in dB, of the VDSL signal,
downstream (from the DSLAM) and
upstream (transmitted by the HST-3000).
Interleaving depth set by the DSLAM. This
is a measure of latency introduced on the
link due to the scrambling of VDSL frames
to protect data and create a more reliable
link.