Diagnostic Tools; Cable Diagnostics - Lightware MMX8x4-HT420M User Manual

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6. Software Control – Lightware Device Controller
6.7. Diagnostic Tools
6.7.1. Cable Diagnostics
DIFFERENCE:
This tool is available in case of TPS ports only.
The cable diagnostics is a useful tool to determine any cable related issues in case of TPS connection.
The estimated cable length and the quality of the link are measured periodically and the diagnostic window
shows the values in real-time. If the green bars hit the first line in the middle they turn into red. It means
the number of the errors – during the extension – is higher than recommended. The link might be alive but
recovering of the received data is not guaranteed.

INFO: Each bar represents a differential line in the CATx cable. The inappropriate termination of the cable
usually causes high error rates. Check the cable terminations or change the cable.
Reference Values
Value
10 -10 Excellent image quality
-10 -9
10 Minor error, not recognizable by eyes
-8
10 Sometimes recognizable flash on a special test pattern
-7
10 Small noise can be seen
-6
10 Easy to recognize image error
-5
10 Bad image quality
-4
Above displayed "Video BER < 10
means the number of the bit errors is about 1 pixel in every 80 seconds.
Cable Diagnostic Window
Explanation
" value means that on average there is 1 bad pixel after 10
-10
MMX8x4-HT series – User's Manual

INFO:
Distances
Table and Chart Views
Cable diagnostics can be displayed in advanced modes as well. Two ways are available: table view and chart
view. Data can be exported to a file on clicking on the Export data button.
#diagnostic
pixels, which
10
Applied firmware package: v1.3.0 | LDC software: v2.4.2
You can find more details about maximum twisted pair cable distances in the
section.
Table view of cable diagnostics
Chart view of cable diagnostics
62
Maximum Extension