User's Manual

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Internal IR Receiver

The internal IR receiver is located beneath the center of the keypad’s face

plate. The internal IR receiver receives IR commands for the MRKP1E and for

the MRC88m. It will also pass-thru IR remote control commands to audio

sources, via an emitter, to each of the sources connected to the MRC88m. The

internal IR receiver is interference friendly. However, some optically noisy

environments may require the use of an external IR receiver. (See Figure 3.2

for details on using an external IR receiver)

Figure 3.1: Internal IR Receiver

Compatible Handheld remotes

The MRKP1E’s minimal design necessitated the presence of a minimum

number of buttons. As a result, a handheld remote controller, such as a

Xantech RC68 or MREM is required for accessing other control functions of the

source such as navigation, menu, and transport controls. Other programmable

Xantech remotes such as XTR39 can also be used. The list of RC68 codes is

available at www.xantech.com/Controls/KeypadsRemotes/Remotes/MREM, in

the Products page, under “MREM Code List”.

(Note: RC68 commands may not be used with projects created in Quick

Config

)

Installation

The MRKP1E is designed to mount in a standard single-gang electrical back-

box (J Box – see Specifications sections for details). Typical mounting height is

56-60 inches (1.53 meters) from the floor to the bottom of the frame. This

provides optimum viewing for the largest number of people.

Route the CAT-5 cable from the MRC88m into the back of the electrical back-

box, terminate it with an RJ-45 connector after it is passed through the

electrical back-box. Connect them to the appropriate RJ-45 connector on the

rear of the MRKP1E (“CONTROLLER” for connecting to MRC88m, or

“EXTENSION” if connecting to an extension keypad). If using an IR Receiver,

strip the ends of three conductors of the IR receiver’s cable and insert into the

appropriate terminals of the IR Input terminal block shown in Figure 3.2.

Once connections are made, mount the MRKP1E in to the electrical back-box

using the two provided screws. Mount the Trim Plate Bracket as shown in the

Figure 2.5 on the next page, and then snap the Screw-less Trim Plate in place.

Figure 2.4: MRC88m – MRKP1E Pin-out diagram for Cat-5 cable

(T568B configuration)

Wire Color Pin # Signal

white/orange 1 485 +

orange 2 485 -

white/green 3 12V RET

blue 4 IR RET

white/blue 5 IR

green 6 +12V

white/brown 7 Attn. 485

brown 8 IR Loop Back

Cat 5

Cable

RJ45 Connector at

Controller/Amplifier

RJ45 Connector

at Keypad