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MRC88 / MRAUDIO8X8 QUICK START GUIDE
08905142A
10
PREPARATION – WIRING
CAUTION: Power voltage for the keypad is transmitted along the CAT5 cable!
Incorrect wiring on this cable can destroy the MRC Keypad!
TERMINATING THE CAT5 CABLES
All MRC88 CAT5/RJ45 connections utilize the EIA/TIA 568B Standard pin-out as
shown in Figure 7.
Figure 7 – CAT5/RJ45 Pin-out (EIA/TIA 568B)
Cables should be configured in a pass through (pin to pin) configuration. To
terminate CAT5 cables:
1. Trim the end of the CAT5 so all eight conductors are the same length.
2. Using a CAT5 stripper, strip away approximately ½ inch of the cable jacket.
DO NOT STRIP THE INDIVIDUAL WIRES. Strip only enough of the jacket
to make connections. None of the individual wires should be hanging out
the end of the RJ45 connector when finished. There must be sufficient
jacket on the cable to allow the hinged tab on the RJ45 connector to apply
pressure to the cable jacket to function as a strain relief when pressed
together with the crimp tool.
3. With the RJ45 locking tab facing down, insert the individual wires into the
RJ45 connector per EIA/TIA 568B Standard pin-out as shown in Figure 7.
4. Use a RJ45 crimping tool to press the electrical contacts into the individual
wires and the hinged tab into place as the strain relief.