LanTEK® II Series Manual - Ideal Industries Inc.
LanTEK® II Series Manual - Ideal Industries Inc. LanTEK® II Series Manual - Ideal Industries Inc.
Chapter 6 Structured cabling testing Illustration 6.16. ACR-N (ACR) / Power Sum ACR-N (Power Sum ACR) 6.16.1. ACR-N (ACR) Test and Power Sum ACR-N (Power Sum ACR) Test Error A large difference between the measuring values is preferable, since this indicates a strong signal and minor perturbations. 6.16.2. Troubleshooting ACR-N (ACR) Test and Power Sum ACR-N (Power Sum ACR) Test Error For information on troubleshooting, refer to the corresponding sections on NEXT and loss test. 6.17. Headroom Test The headroom test is a mathematical analysis of the data calculated during the preceding test. The sum of Power Sum ACR-N (Power Sum ACR) test (i.e. corresponding value of worst case wire pair after normalization of wire pair loss over 100 meters) and the additional margin between the worst case Power Sum NEXT-value and the limit for Power Sum NEXT. 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. 6.17.1. Headroom Test Error Illustration 6.17. Margin Test 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). 67
Chapter 6 Structured cabling testing 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 Customs Cable Type 1. Open "Cable Type" on start screen. 2. Use Arrow Keys to navigate to desired cable type. Illustration 1 6.18.1. Cable Type 3. Use the soft key to open menu selection. Illustration 2 6.18.1. Menu Selection Test Standards 4. Use Arrow Keys to navigate to Custom Name/NVP and confirm with Enter. 68
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Chapter 6<br />
Structured cabling testing<br />
6.18. Custom Cable Preferences and Cable Parameters<br />
All cable types pre-programmed in LanTEK ® <strong>II</strong> Cable Tester are based on a predefined test<br />
standard. These pre-programmed preferences cannot be changed. If you wish to perform<br />
other tests on a selected cable line, you first must create a custom cable.<br />
Example: In addition to TIA 568B Category 5 tests, the return loss is to be measured (which<br />
is not required by TIA). For this purpose, a custom cable is created and the tests selected<br />
that are to be included in the test series for this cable.<br />
A maximum of ten (10) custom cables can be created, stored, deleted and, if required,<br />
loaded.<br />
6.18.1. Creating a New Customs Cable Type<br />
1. Open "Cable Type" on start screen.<br />
2. Use Arrow Keys to navigate to desired cable type.<br />
Illustration 1 6.18.1. Cable Type<br />
3. Use the soft key to open menu selection.<br />
Illustration 2 6.18.1. Menu Selection Test Standards<br />
4. Use Arrow Keys to navigate to Custom Name/NVP and confirm with Enter.<br />
68
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