Allen-Bradley MediaChecker 1788-MCHKR Manual page 24

24
Testing the Wire Map (WIRE MAP)
Testing the Wire Map (WIRE MAP)
Using the MediaChecker's WIRE MAP function and the
Cable ID, you can determine the wiring of both the near
and far ends of twisted pair cables. To test the wire map,
do the following:
1. Connect the cable under test to the appropriate
connector on the MediaChecker.
2. Connect the Cable ID to the far end of the cable. Use
an adapter, if necessary.
3. Turn the rotary switch to WIRE MAP.
You can omit step 4 if you know the cable selection
is correct for the cable under test.
Press E to check the cable selection. The
4.
MediaChecker displays the cable selection for a few
seconds and then starts the test. If the cable
selection is not correct, refer to "Preparing the
MediaChecker for Use" on page 8 for instructions on
selecting a new cable setting. "CAL" appears in the
second line of the display if a cable calibration has
been performed for the selected cable type.
1788-UM002A-US-P – April 2000
Important: If you select the "COAX" cable type while in
the WIRE MAP mode, the MediaChecker will
perform the LENGTH test on the cable.
Assuming the cable attached to the MediaChecker is a
DeviceNet Thick cable with no failures, the following
display indicates a good cable:
Near End
Far End
The top line always displays the near end of the cable;
the second line always displays the far end.
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