Dsl Identity; Dsl Graphs - Viavi OneExpert DSL User Manual

Chapter 14 Test Results
DSL Results

DSL Identity

Table 20 describes the DSL Identity results.
Table 20 DSL Identity results
Result
HW Type
HW Rev
xTU-R SW Revision
xTU-R PHY Revision
xTU-O Vendor
xTU-O Rev

DSL Graphs

The graphs provide a graphical representation of the following:
• SNR (signal to noise ratio) Per Tone
• Bits Per Tone (BPT)
• QLN (quiet line noise) Per Tone
• Hlog Per Tone
The SNR graph indicates line quality. The BPT graph indicates the total bit
rate and is a useful tool for finding disturbers. Bits per tone is defined as
bits assigned per DMT tone.
Examine the portions of the graphs where there are dips or breaks. These
dips represent areas where interference is degrading the DSL signal.
Page 192
Description
Type of modem hardware
Revision of the hardware
SW revision of the local modem
PHY firmware revision for the local modem
CO vendor code
CO revision number
OneExpert DSL User's Guide
22052280, Rev 006 November 2015