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Running COAX and TWINAX Autotests
Coax Testing
Chapter 8
The WireScope 350 and the DualRemote 350 support both Coaxial and
Twinaxial standards. This chapter will instruct you how to test to these
standards.
Coaxial cable (also called Coax) consists of an insulated central conducting wire
wrapped in another cylindrical conducting wire. Both of these wires are encased
in an insulating layer and an outer protective layer. Coax is typically used in
carrying high-speed data and in CATV.
Coax Setup
Testing of coaxial cable checks only for length and cable integrity. Because of
this, there is no need to calibrate before the Autotest. Only a subset of the tester
settings applies to Coax testing. These settings are shown on the screens below.
Operation
Insert the Coax probe in the WireScope 350's SmartProbe port and connect it to
the coaxial cable to be tested. There is no need to use the DualRemote 350 in
certifying Coax cables. Press the Autotest button on the Main Menu to bring up
the Autotest Setup screen shown above. Press the Edit Settings button to
change any settings. A detailed description of the Autotest Setup and Autotest
Settings screens can be found in Chapter 4. It may be necessary for you to add a
new description to the cable database (add name, specify 1 pair for cable pair
count, then select Coax; then, either specify the cable's NVP or select Calculate
NVP from length; finally, add or select the target performance grade for the
cable, if applicable (otherwise, Unspecified)).
Running COAX and TWINAX Autotests 69
Chapter 8
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