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Twinax Testing
NOTE:
Chapter 8
Twinaxial (also called Twinax) cables are able to carry high frequencies and are
most often used for data transmissions and video applications. Twinax consists
of one twisted pair and a metallic shield.
Twinax Setup
Testing of Twinaxial 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 Twinax testing. These settings are shown on the
screens below.
Operation
Insert the Twinax probe in the WireScope 350's SmartProbe port and connect it
to the Twinax 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 TWINAX; 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)).
When the Twinax probe is inserted a default Twinax cable is automatically
selected. You can change to a different Twinax cable in the Autotest Settings
screen.
The WireScope 350 does not specify any networking standards that run on
Twinax cable. Any attempt to run a Certify Networks test on a Twinax cable
will trigger an error message stating that none of the networks selected are
configured to run on this type of cable
Press the Start Test button from the Autotest Setup screen to perform the
Twinax Autotest
Running COAX and TWINAX Autotests 71
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