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Model MX88 Page: 13
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23. Source Loop-Thru Connections (8).
a) Audio Loop-Thru. Parallel Connection to Audio Inputs for connecting Audio Source to another MRC-
88 in Expanded Mode or to other local devices. This is not an active output.
b) Video Loop-Thru (MX88vi only). Buffered Video Connection for connecting Input Video Source to
another MX88vi in Expanded Mode or to other local devices. NOTE: Since this is a Buffered video
connection, this loop-thru is not active when POWER is removed from the MX88vi.
24. Zone Audio Inputs (8). 3.5mm stereo mini phone jack for zone specific stereo audio source Inputs. Zone
Audio Inputs override rear panel, Source 1 connection. Allows each of the 8 zones to have a dedicated
source output by selecting Source 1 on keypad.
25. Zone Audio Pre-Amp Out (8). Gold-plated RCA jacks for connecting Zone Audio Output to an external
amplifier. For use with applications where either more power is required for zone or passing to a Dolby
Surround compatible receiver for theater quality audio in zone.
26. IR Emitters (1-8). 3.5mm mono mini phone jacks. These mini jacks are for the connection of IR emitters to
control individually the eight source components. These jacks are “steerable” with Universal Dragon
Software for IR Routing and Priority Lockout. IR received from a Zone will be routed to the emitter port
corresponding to that zone‟s active source selection. Can also be configured as 8 common emitter ports
using Universal Dragon.
27. IR Emitter (Common). 3.5mm mono mini phone jacks. Single Common IR output that can be used to
control devices such as Multi Zone Audio Server, motorized drapery systems, TV lifts and lighting systems
or any other IR controlled component. IR Received from any zone keypad will be output the Common
emitter port regardless of source selection.
28. Zone IR Out (8). 3.5mm mono mini phone jacks. IR received from a zone will always be passed to the
corresponding Zone IR output. This can be used to control Zone Specific components not located in the
zone.
29 and 30. Com Ports 1 and 2. DB15 (DB15-to-DB9 adaptors included) Bi-Directional RS232 Ports allow full
control of all Internal Amplifier Commands of the MX88 Controller and the ability to trigger programmed IR
Macros for control of devices connected to the Controllers emitter ports, from an external PC. The Com
Ports can also be used to send ASCII/Hex commands out to control an external RS232 device directly from
the MX88 Keypad and/or handheld remote, and receive status information and metadata from the device.
Port 1 is also used for system expansion, where the port 1‟s of two MX88‟s allow them to be connected
together, via included Expansion Cable, to provide an 8 Source/16 Zone system with full control between
units.
31. User Replaceable Fuse. 10 AMP L 250 VAC.
32. AC Power Input. Standard IEC 3-Conductor AC line cord to be used with a 3-conductor power line cord.
33. Grounding Screw. “Knurled Screw” provides a means for chassis connection to earth ground or to other
Audio/Video products to aid in the reduction of system noise.
34. Power On/Off LED. This LED will be lit in white when the MX88 is on.
35. Ethernet Port (MX88vi and MX88ai only): Connects to a Local Area Network, and allows the control of all
the zones of a MX88vi or ai from almost any wired or wireless IP-enabled device with web browsing
capabilities, such as the Apple® iPad®, Windows® and Android™ tablets, and PCs. It also allows for some
limited 2-way external device interface, subject to expansion in the future. This port is also used for setting
configuring the IP address and performing firmware updates for the MX88vi/MX88ai‟s built-in web server,
using the Xantech MRIP Installer Software.