RUGGEDCOM ROS
User Guide
Chapter 3
Device Management
Viewing Cable Diagnostics Results 73
Parameter Description
Port Synopsis: 1 to maximum port number
The port number as seen on the front plate silkscreen of the switch.
State Synopsis: { Stopped, Started }
Control the start/stop of the cable diagnostics on the selected port. If a port does not support
cable diagnostics, State will be reported as N/A.
Runs Synopsis: 0 to 65535
The total number of times cable diagnostics to be performed on the selected port. If this
number is set to 0, cable diagnostics will be performed forever on the selected port.
Calib. Synopsis: -100.0 to 100.0 m
This calibration value can be used to adjust or calibrate the estimated distance to fault. User
can take following steps to calibrate the cable diagnostics estimated distance to fault:
• Pick a particular port which calibration is needed
• Connect an Ethernet cable with a known length (e.g. 50m) to the port
• DO NOT connect the other end of the cable to any link partner
• Run cable diagnostics a few times on the port. OPEN fault should be detected
• Find the average distance to the OPEN fault recorded in the log and compare it to the
known length of the cable. The difference can be used as the calibration value
• Enter the calibration value and run cable diagnostics a few more times
• The distance to OPEN fault should now be at similar distance as the cable length
• Distance to fault for the selected port is now calibrated
Good Synopsis: 0 to 65535
The number of times GOOD TERMINATION (no fault) is detected on the cable pairs of the
selected port.
Open Synopsis: 0 to 65535
The number of times OPEN is detected on the cable pairs of the selected port.
Short Synopsis: 0 to 65535
The number of times SHORT is detected on the cable pairs of the selected port.
Imped Synopsis: 0 to 65535
The number of times IMPEDANCE MISMATCH is detected on the cable pairs of the
selected port.
Pass /Fail /Total Synopsis: Any 19 characters
This field summarizes the results of the cable diagnostics performed so far.
Pass - number of times cable diagnostics successfully completed on the selected port.
Fail - number of times cable diagnostics failed to complete on the selected port.
Total - total number of times cable diagnostics have been attempted on the selected port.
>
NOTE
For each successful diagnostic test, the values for Good, Open, Short or Imped will increment based
on the number of cable pairs connected to the port. For a 100Base-T port, which has two cable pairs,
the number will increase by two. For a 1000Base-T port, which has four cable pairs, the number will
increase by four.
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