OmniTek OTR 1001, User Manual

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OmniTek OTR 1001 User Guide, v3.1 M-13
M.5 Cable Length
The signal amplitude where the signal is measured implies a certain degree of cable loss which
in turn allows a rough estimate to be made of the cable length (for a given type of cable). This
length is then displayed at the top of the Eye display (when in Auto Measure mode), in the Status
Overview and in the PHY Status Summary (see Section E.6).
The cable length deduced from the measurements made by the OTR is variously displayed:
among the Eye/Jitter information shown in the Status displays
among the auto-measure information shown on the Eye diagram (see Section M.4)
among the auto-measure information shown on the Jitter display (see Section M.3)
Where the length that is estimated is significantly longer from the actual cable length, this
suggests there are issues with how the cable has been installed. For example, the cable could be
kinked somewhere along its length.
Configuration
The estimates of cable length are only meaningful where the correct type of cable has been
specified as the calculation is based on standard data on the loss per meter of the specified cable.
Control Panel Mouse & Keyboard
To set the type of cable:
1. Display the System page of the Config window.
2. Select appropriate type from drop-down list of standard cable types.
Figure M-9: Cable Type setting on System page of Config window