Chapter 1
Your Cable Tester
1-12
OVERVIEW OF LINK TESTING AND REQUIREMENTS
The following sections describe typical setup for permanent link and channel link
testing. Specific requirements for calibration of copper, coax, and fiber testing are
discussed in Chapter 3: Structured Cable Field Calibration and Testing, Chapter 4:
Coax Cable Field Calibration and Testing, and Chapter 5: Fiber Optics Cable Field
Calibration and Testing (FIBERTEK )
.
PERMANENT LINK TEST SETUP
ANSI, EIA, TIA, and ISO all provide two network communication circuit specifications:
permanent link and channel link. A permanent link consists of up to 90 meters of
horizontal network cabling (maximum length limit applies to TIA standards only). The
permanent link (shown below) is used to certify the horizontal network cable
installation before network connection and user hookup. It excludes adapters,
patchcords, and jumpers.
CHANNEL LINK TEST SETUP
A channel link includes all aspects of the cabling system. It consists of up to 90 meters
of horizontal network cabling, as well as user patchcords, jumpers, and channel
adapters at each end. The channel link (shown below) is used to certify the network
installation, including the horizontal link and user patchcords.
Figure 1-5: Permanent Link Test Connections
Note: Ensure that the Cable Type is set to the correct testing links. Twisted Pair
Permanent Link or Twisted Pair Channel Link. If you exceed the tester length limits,
the tester will fail the link.
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