Rockwell Automation 1788 NetLinx Media Checker Users Manual - Manual (Page 9)

Preparing the MediaChecker for Use 9
1788-UM002A-US-P – April 2000
To set up the MediaChecker for the desired cable, do the
following:
Important: The number of steps necessary to select a
cable definition depends on the type of
network selected.
1. Turn the MediaChecker on by turning the rotary
switch to TEST, LENGTH, or WIRE MAP.
2. Press A .
3. Press C or D until the desired network is
displayed, then press E .
4. Press
C
or
D
until the desired cable type is
displayed, then press E .
Steps 5 and 6 apply only to Ethernet:
5. Press C or D until the desired category is
displayed, then press E .
6. Press
C
or
D
until the desired wire size is
displayed, then press E .
7. Press A or turn the rotary switch to a new position
to exit the setup menu.
Important: You can check the cable selection at any
time other than when in the setup mode by
pressing the
E key.
The MediaChecker will now test according to the cable
characteristics defined by the factory settings for the
cable selected. However, cables coming from different
batches or manufacturers can have characteristic
variances of up to 20 %, causing deviations in length
measurements. For more accurate measurements,
calibrate the MediaChecker to a known length of the
cable to be tested. See “Calibrating the MediaChecker to
a Cable” on page 10.