LanTEK III 161809 Iss 2
User Manual Page68
The headroom test is a simple way to indicate the margins available on a cable line for
faultless support of an application. This test also indicates the additional margin obtainable
by using "improved" cables and connections, as well as careful installation.
Fig. 86 Margin Test
6.17.1 Headroom Test Error
The headroom value indicated in dB identifies the minimum margin available for a cable
line. A high value is preferable, since it indicates a strong signal and minor perturbations.
The pass/fail limits for the margin are identical with those for Power Sum ACR-N (ACR).
6.18 Custom Cable Preferences and Cable Parameters
All cable types pre-programmed in LanTEK
®
II Cable Tester are based on a predefined test
standard. These pre-programmed preferences cannot be changed. If you wish to perform
other tests on a selected cable line, you first must create a custom cable.
Example: In addition to TIA 568B Category 5 tests, the return loss is to be measured (which
is not required by TIA). For this purpose, a custom cable is created and the tests selected
that are to be included in the test series for this cable.
A maximum of ten (10) custom cables can be created, stored, deleted and, if required,
loaded.
6.18.1 Creating a New Custom Cable Type
1. Open "Cable Type" on start screen.
2. Use Arrow Keys to navigate to desired cable type.
To Next Page
Loading...
