Key Digital KD-MXA8X8Pro FatBOY User manual

8 Inputs to 8 Outputs Audio Matrix Switcher,
supports Analog L/R & Digital PCM Audio
The Experts in Digital Video Technology and Solutions™
KD-MXA8X8Pro
Setup Guide

4
Table of Contents
About KD-MXA8X8Pro ........................................................*
Connections, LEDs and Button Map ............................................. 2
Application Example ......................................................... 6
Quick Setup Guide .......................................................... 7
Remote Control ............................................................ 8
RS-232 Commands..........................................................10
Accessories................................................................13
Specifications ..............................................................14
Important Product Warnings & Safety Instructions ...................................15
How to Contact Key Digital
®
....................................................16
Warranty Information .........................................................17
About KD-MXA8X8Pro
Description
»Analog and Digital Audio and Composite Video Matrix Switcher capable of switching up to
8 Sources/Inputs to 8 independent Zones/Outputs with full audio control for Volume,
Balance, Tone and Lip Sync.
Key Features
»Switches 8 Analog and PCM Digital Audio or Composite Video sources to 8 independent
Zones/Outputs
»Built-In Audio Processor Converts Analog to Digital or Digital to Analog
»Front LEDs indicate the selected source and input/output status
Key Benefits
»Capable of switching Composite video with audio by using the PCM connection (if not used
for Digital audio).
»Serial IR, Optical IR, Front Panel Control, Discrete Remote Codes, RS-232 Control.
»Supports major control systems such as Compass Control
®
, AMX
®
, Control4
®
, Crestron
®
,
Universal
®
© 2010 Key Digital, Inc. All rights reserved.

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Additional Key Features
»Easily controlled via IR remote (included), Serial IR or RS-232
»RCA style connectors for ease of installation
»Slim 1U Rack chassis for space conservation
Matrix Expansion
»Can be incrementally expanded (with additional units) up to 8 Sources/Inputs to 64 Zones/
Outputs or 16 Sources/Inputs to 64 Zones/Outputs. Visit www.keydigital.com for expansion
unit model numbers
Mounting:
»Rack mount: Secure the rack ears to each side of the KD-MXA8X8Pro with the supplied
hardware.Then, fasten the unit to the rack rails with the included machine screws.
Unit Configurations:
The KD-MXA8X8Pro is a full matrix audio switcher capable of switching 8 inputs to 8 outputs. Any
input, or source, is available to any output, or zone, at any time. The switcher can also be used as a
distribution amplifier when all outputs are fed from the same source input.
The unit will handle line level Analog audio signals and PCM digital audio signals. It will also
convert Analog signals to Digital, and Digital signals to Analog. Full control of audio properties such
as Bass, Treble, Mid-range, Balance and Lip-Sync are also available. Control of the KD-MXA8X8Pro
is via front panel push buttons, IR remote, serial IR or RS-232.
The KD-MXA8X8PRO can be configured to work in 5 separate Modes.

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These modes can only be set through the RS-232 command ‘SPO xx T y’.
(see RS232 commands detailed on page 12)
NOTE: The default configuration type is 1.
Type 1 = Left & Right Analog Inputs to Left & Right Analog Outputs with Audio Control plus PCM
Inputs to PCM Outputs in pass through (switching only). Any Audio type can be passed through
PCM in this mode.
Type 2 = Left & Right Analog Inputs to Left & Right Analog Outputs switching with Audio Control
plus Composite Video Inputs to Composite Video Outputs (switching only).
Type 3 = Left & Right Analog Inputs to Both Left & Right Analog Outputs and PCM Outputs. All
have switching and Audio Control.
Type 4 = PCM Inputs to Both Left & Right Analog Outputs and PCM Outputs. Both signals will
switch, only Analog Outputs will have Audio Control. PCM Outputs will be in pass through mode.
Any Audio type can be passed through PCM in this mode.
Type 5 = PCM Inputs to Both Left & Right Analog Outputs and PCM Outputs with full audio
control. PCM Audio will be converted to Analog and processed for control. Will not pass
multichannel audio; Dolby Digital, DTS etc. in this mode.
Connections, LEDs and Button Map
Rear Panel Connections:
All connections to the KD-MXA8X8Pro are found on the rear panel of the unit. Refer to the
illustrations below for port assignments while making connections
Power Connection
Serial IRIR Eye
RS-232 Port
Operation Mode Switch
8X Audio Inputs 8X Audio Outputs
Analog Stereo Audio
L R
PCM/CVBS
Analog Stereo Audio
L R
PCM/CVBS
Input Connections
½Audio Input
»L/R Analog
»PCM Digital Coaxial Audio
½Composite (CVBS) Video Input on PCM port (if not used)

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Output Connections
½Audio Output
»L/R Analog
»PCM Digital Coaxial Audio
½Composite (CVBS) Video Output on PCM port (if not used)
Connections:
Input:
½Analog: Stereo line level
»(8X) L&R RCA style connectors
»or (8X) PCM* (or Composite Video) RCA style connector
Output:
½Analog: Stereo line level
»(8X) L&R RCA style connectors
»or (8X) PCM* (or Composite Video) RCA style connector
*The digital audio path will pass encoded signals such as AC3, DTS, etc when Audio Type 1 & 4 is chosen for pass-
through mode. The volume control feature will be disabled.

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Unit Connection Plate
½Power Connection
½Serial IR
½RS-232 Port
½IR Eye
½Operation Mode Switch:
»2 position slide switch to select Program Mode for upgrading firmware
or Normal operation mode.

5
Front Panel Operation:
Output Button
Analog Stereo Audio Inputs 1-8 LEDs (Bottom Row / Orange)
CVBS/PCM Inputs 1-8 LEDs (Top Row / Blue) IR Eye
Buttons
½Output buttons 1-8; Press the Output buttons to cycle through Inputs sequentially from 1-8 to
switch sources.
»Output Analog Audio Select
»Cycle through to select desired Analog Audio Input
»Output PCM Audio / CV Video Select
»Cycle through to select PCM Audio / CV Video Select
LED Lights
LED Input Indicator Bank
»Indicates selected input port for associated output.
»There are 16 LED’s for each Output number.
»Top LED row (Blue) is for CVBS/PCM Inputs 1-8 at each output
»Bottom LED row (Orange) is for Analog Stereo Audio Inputs 1-8 at each output
PCM/CVBS Mute and Stereo Audio Mute LED Indication.
»When in Mute mode, LED indicators 1, 2 & 7, 8 will be illuminated.
Analog Stereo Audio (L/R) Inputs
CVBS/PCM Inputs
Analog Stereo Audio (L/R) Inputs
CVBS/PCM Inputs

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Application Example
L/R Audio L/R Audio
L/R Audio L/R Audio L/R Audio L/R Audio
L/R Audio
PCM Audio PCM Audio PCM Audio
PCM Audio PCM Audio PCM Audio PCM Audio
PCM Audio PCM Audio
*All PCM Audio sources can be
substituted with Composite Video
Speakers
Speakers
Speakers
Speakers
Speakers
Speakers
Speakers
Speakers
KD-MXA8X8Pro
Audio
RS232 Control
Serial IR
Optical IR
Optical IR
Zone 1 Zone 3 Zone 5 Zone 7
Zone 2 Zone 4 Zone 6 Zone 8
iPod
XM Radio
Blu-Ray
Cable TV
CD Changer DVD Player
LaptopSound System

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Quick Setup Guide:
Connections
1. Begin with the KD-MXA8X8Pro and all Input/Output devices turned off
and power cables removed
2. Connect analog audio sources via the left and right RCA inputs, or
digital sources via the PCM inputs
3. Connect the analog audio destinations via the left and right RCA outputs, or
digital destinations via the PCM outputs
4. Connect Video and Audio displays devices.
5. Connect power to the KD-MXA8X8Pro as well as all other input and output devices and turn
them on
6. Operate KD-MXA8X8Pro switcher via the front panel buttons, IR remote, serial IR or
RS-232 control
Operation:
After performing the setup above, the unit is ready for operation. Most applications will just involve
switching for day-to-day operation. There are several options for controlling the unit. Commands
can be issued via IR remote control, RS-232 or by using the front panel buttons.
Matrix Switching via Push Buttons
»For switching inputs, simply press the selection buttons within the desired Output number.
Pressing this button repeatedly will cycle through all Video/Audio Inputs.
Matrix Switching via IR
»To switch Analog Audio: Select the desired Output number, followed by the ‘Audio Mode’
button, then the desired Input number.
»Example. To switch Output 2 to Input 4 press; ’R1-02-Audio Mode-04’
Matrix Switching via RS-232
½To switch PCM (or CV Video) Independently:
»SPOxxSIyy
»xx = Desired Video Output #
»yy = Desired Video Input #
½To switch Analog Audio Independently:
»SPOxxSAyy
»xx = Desired Audio Output #
»yy = Desired Audio Input #
½To switch PCM (or CV Video) and Analog Audio simultaneously:
»SPOxxSyy
»xx = Desired Video & Audio Output #
»yy = Desired Video & Audio Input #

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Factory Default Reset:
To perform a factory default reset; with the unit powered on, press and hold Outputs 1 and 8 on the
front panel for 10sec., then release. This will reset the unit to its initial configuration. All customized
settings will be lost.
Remote Control
The KD-MXA8X8Pro ships with an IR remote control providing selection of inputs for every output.
As illustrated in the following diagram, these convenient keys are clearly marked.
Power On
Power OFF
R1 Button
R2 Button
R3 Button
All Mute / Mute
Balance
Tone Controls:
Bass, Middle,
Treble
Lip-Sync (Delay)
All Restore / Restore
Arrow Up, Down
R4 Button
Volume
Numeric Keypad
Video Mode Audio Mode