Xantech MRAUDIO8X8M, MRC88M Zones with IR Receiver ONLY, Basic/Advanced/Expanded, Modulated Video

Model MRC88m / MRAUDIO8x8m Page: 33

If any keypad in the zone is using an external IR receiver, or if an outdoor keypad is necessary in a sub- zone, the MRC88m Terminal Block on the rear of the keypad (see Figure 12) can be used to expand the connections on the back of the keypad as shown in Figures 11A, B, & C. The Maximum cable run to the external IR receiver/keypad in each of the above cases can be up to 125 feet from the keypad depending upon type and gauge of wire used.

Note: If no MRC88 Keypad will be used in a particular zone, IR Receivers and/or IR based Keypads may be used as shown in Figure 11D using the MRC44CB1 Connecting Block. This will be desired for:

1.Zones with IR Receiver ONLY

2.Outdoor Zone where WaterPad Keypad and/or IR Receiver is needed

The MRC44CB1 connecting block can be used as shown in Figure 11D above. Using a CAT5 wire, connect one end into the desired Zone output of the MRC88m controller and connect the other end to the RJ45 connector labeled CONTROLLER on the MRC44CB1 connecting block. IR Receivers terminated with a Stereo Mini Jack may directly connect to the MRC44CB1 connector labeled IR IN. For all others IR Recv’s with bare wire or Keypads) use 24AWG or higher and connect using the +12v, GND, and SIG screw terminals. A separate power supply is required for configurations in which the current load will exceed 85mA. Consult the MRC44CB1 manual for complete instructions.

SPEAKER CONNECTIONS

(BASIC/ADVANCED/EXPANDED)

SPEAKER PHASING: TO OBTAIN STABLE IMAGING AND FULL BASS RESPONSE, IT IS IMPERATIVE THAT STEREO SPEAKERS BE CONNECTED "IN PHASE" WITH EACH OTHER. YOU CAN VERIFY THIS AS FOLLOWS:

1.If the "+" (positive) and "–" (negative) terminals on your speakers are correctly marked, and visible, and you have wired the system with the positive speaker connector on the rear of the MRC88m Controller/Amplifier connected to the positive connector on the speaker and the negative speaker connector on the rear of the MRC88m Controller/Amplifier connected to the negative connector on the speaker, then the system will be "in phase". No further action is required. Most manufacturers identify the positive terminal with a red binding post, a "+" sign, or a red dot.

2.If you are unsure of the markings, you can verify the phasing. Using a mono sound source, such as AM radio, alternately reverse the leads to one of the speakers. Pick the connection that delivers a solid center image between the speakers as well as best bass response.

CAUTION: After lead ends are inserted and the screws tightened down, be sure there are no free strands that could cause shorting!

VIDEO CONNECTIONS

(BASIC/ADVANCED/EXPANDED) Composite Video

The buffered, composite video output from the MRC88m Controller/Amplifier will drive a VIDEO INPUT on a TV or monitor directly. Use RG-6 coaxial or RG-59 quadshield cable with RCA type phono plugs on each end. This connection can be run for 100 feet.

Modulated Video

When using the RF/ANT input on a television, use RG-6 coaxial or RG-59 quadshield cable with "F" connectors on each end to connect to the RF output on the Modulator to the RF/ANT in on the zone TV.

© 2009 Xantech Corporation