Key digital KD-MAX8x8 Audio Matrix Switcher with built-in Audio DSP Instruction Manual

Key digital KD-MAX8x8 Audio Matrix Switcher with built-in Audio DSP Instruction Manual

Note: Please visit www.keydigital.com for the latest product documentation and software downloads. Product features and specifications are subject to change without notice.

Introduction

Key Digital® KD-MAX8x8 is an 8×8 matrix of analog and digital audio. Inputs and outputs support balanced or unbalanced analogy audio on a 6-pin phoenix connector while digital PCM audio up to 5.1 channels is supported on RCA connectors. Analog and digital outputs may listen to independent selections of the connected audio sources and each output features a digital signal processor for volume, muting, 3-band EQ, balance, and delay.

Key Features

• > Multi-format Audio Multiplexing: DSP per output for independent matrix selection
  » Analog to Analog Matrix with DSP
  » Digital to Analog Matrix with DSP
  » Digital to Digital Matrix
  » Analog to Digital Matrix

• > Audio DSP: Variable level settings for volume, muting, 3-band EQ, balance, and lip-sync delay per balanced output

• > Audio Delay: Variable level set from 0ms to 170ms

• > Audio Conversion: Analog to digital. Digital to analogy

• > Balanced or Unbalanced: Input audio type may be specified per input

• > Lossless Compressed Digital Audio: Dolby® and DTS surround up to 5.1ch pass-thru

• > Long Cable Runs: Enabled by balanced audio connection, signals may be run up to 1,000 ft.

• > Control Integration: TCP/IP, RS-232, and USB with full bi-directional operation, front panel push
  buttons and LEDs, front/rear optical IR, serial IR,

• > Control System Support: Key Digital® App ready, Compass Control® Pro ready, KD-Wizard®
  ready. Fully controllable by all IR, RS-232, and TCP/IP supported control systems via open API: AMX®, Crestron®, Control4®, KNX®, RTI®, Savant, URC®, Leviton® etc.

• > Key Digital® App Ready: Scan & detect population for pre-built GUI and TCP/IP control via Key Digital® App

Accessories

• Power supply: +12V/2A (25W), model KD-PS12V2ASC

• IR Remote control, model KD-REMOTEHM88

• (17) 6-position terminal block

• Rack mount ears

Rack Mounting

• Secure the included rack ears to each side of KD-MAX8x8 with the supplied hardware, then fasten the unit to the rack rails with appropriate machine screw.

Connections, Buttons and LEDs

Balanced/Unbalanced Analog Audio Inputs and Outputs

• Each output and input features one analogy audio connector on 6-pin phoenix connector for balanced or unbalanced audio

• Pin assignment for Analog Audio connections:
  » Left + is Pin 1; Left Ground is Pin 2; Left – is Pin 3
  » Right + is Pin 4; Right Ground is Pin 5; Right – is Pin 6

• Unbalanced audio is the default type for each input, and should be connected using the positive (+) and ground pins.

• Each input and accepts/drives audio signals up to 2VRMS with a sampling rate of 48KHz

• Each output features an assortment of DSP controls including Volume, Muting, 3-band EQ, and
  Lip-sync delay.

• There are no down/up conversion capabilities. For example, a 2ch analogy audio input cannot be
  converted to 5.1 surround.

• Microphone inputs are not directly supported. To integrate microphones, please use external powered mixer.

• Each input may be individually set so that analogy is the associated type.
  » If the associated input type is set to analogy, the output selecting the source will output the analogy feed on both the analogy and PCM output connectors.
  » The default association type for each input is “both”:
  » Analog In to Analog Out
  » PCM In to PCM Out

PCM Digital Audio Inputs and Outputs

• Each output and input channel features one digital audio on an RCA connector

• Compatible with SPDIF format IEC 60958 supporting 2CH PCM, Dolby 5.1ch, DTS 6.1ch

• Compatible with sampling rates up to 192KHz

• Each input may be individually set so that analogy is the associated type.
  » If the associated input type is set to analog, the output selecting the source will output the analog feed on both the analog and PCM output connectors.
  » The default association type for each input is “both”:
  » Analog In to Analog Out
  » PCM In to PCM Out

• There are no DSP features on the digital audio inputs or outputs. However, muting settings do apply.

• There are no down/up conversion capabilities:

Unit Control Ports

> MAIN Control Port
» 6-Pin Terminal Block for IR and RS-232
» RS-232 and TCP/IP commands may be found in the RS-232 & TCP/IP Commands section
» Pin out:
» Pin 1 = IR Signal
» Pin 2 = IR Ground
» Pin 3 = RS-232 Tx Data
» Pin 4 = RS-232 Ground
» Pin 5 = RS-232Rx Data
» Pin 6 = Ground (optional)

> TCP/IP Control Port
» Default static IP address is 192.168.1.239
» Connect an Ethernet cable from the KD-MAX8x8 to a network router or connect a straight through cable directly from a PC

> Firmware Mode Switch
» Should remain in Operation setting unless instructed by Key Digital technical support
» If changing position of switch, do so only with unit not powered
» Not every firmware update requires the switch to be set to the F/W Load position
» If set to F/W Load, all front LEDs will be illuminated, indicating that unit is in bootloader mode and awaiting a firmware load.

> Micro USB (front panel)
» Typically used for unit configuration, control, and firmware updates
» It is most commonly used with KD-Wizard® software downloaded at www.keydigital.com

Buttons and LEDs

• > 8 output buttons on the front panel
  » Pressing an output button will select the input
  » A blue LED indicates selected input for each output

• > Output MUTE is indicated by the outermost (1, 2, 7, 8) LEDs illuminated, while the inner LEDs (3, 4, 5, 6) are NOT illuminated

• > Output OFF is indicated when the innermost (3, 4, 5, 6) LEDs are illuminated, while the outermost (1, 2, 7, 8) are NOT illuminated

• > Factory default reset is achieved by simultaneously holding the input select buttons 1&8 for 10 seconds
  » The matrix reboots after reset. The LEDs will ramp until reboot has completed

Application Example

Quick Setup Guide

1. Begin with the KD-MAX8x8 and all Input / Output devices turned off and power cables removed
2. Connect analog audio sources to the desired 6-pin phoenix terminals and/or digital audio sources to the desired PCM inputs
3. Connect the analog audio output amplifiers/receivers via the analog 6-pin phoenix terminals and digital destinations via the PCM outputs
4. Connect power to the KD-MAX8x8, followed by all other input and output devices and turn them on
5. If balanced audio input type is required for any of the analog inputs, set the desired input via the IR remote control using command sequence R2, XX, Audio Mode, 3. Note that XX is the desired input number (01 ­ 08).
6. Operate KD-MAX8x8 switcher via the front panel buttons, IR remote, serial IR or RS-232 control
7. See TCP/IP and RS-232 Commands or Settings and Adjustments via Remote sections for more adjustments options

Settings and Adjustments via Remote

Many initial installation steps may be configured using the factory remote control. Other advanced settings may be configured using USB and software downloaded from www.keydigital.com

Output Volume Level
» IR Button Sequence = R1, X, Volume, YY
» X = Output # [1-8] » YY = Volume Level [00-99]

Set Unit Static IP Address to xxx.xxx.xxx.xxx
» IR Button Sequence = R3, Bass, XXX, Video Mode, XXX, Video Mode, XXX, Video Mode, XXX

Set Unit Default Gateway/Router IP Address to xxx.xxx.xxx.xxx
» IR Button Sequence = R3, Treble, XXX, Video Mode, XXX, Video Mode, XXX, Video Mode, XXX
» Default IP address is 192.168.1.239, with default port 23 and default gateway 192.168.1.1
» Please see the IR Remote Command List section for additional commands

Apply New Network Configuration
» IR Button Sequence = R3, All Restore

IR Remote Command List

IR Control is possible using remote model KD-REMOTEHM88 (included). Use the numerical keypad for X, Y, and Z values below.

Advanced unit setup should be completed in the KD Wizard software found on www.keydigital.com

RS-232 and TCP/IP Commands

KD-MAX8x8 allows control over serial interface for bi-directional communication. Use pins 3, 4, 5 for RS-232 communication. In addition to RS-232, the serial interface may also be accessed using a TCP/IP connection.
» Default IP address is 192.168.1.239, with default port 23

Connection Protocol:

» Baud Rate = 57,600 bits per second
» Data Bits = 8
» Stop Bits = 1
» Parity = None
» Flow Control = None
» Carriage Return: Required

Notes

» Commands are not case-sensitive
» Spaces are shown for clarity; commands should NOT have any spaces
» After a new command is received, a prompt should be sent back

Response from Help command ­ — Returns entire API in readable format:

Status Command (STA) ­ Returns unit and system status in readable format:

KD-MAX8x8 > STA

Specifications

Technical:

• » Input (each): Balanced/unbalanced line level audio on 6-pin terminal block. Accepts 2VRMS line audio input with a sampling rate of 48KHz
• » Input (each): RCA female for digital audio following SPDIF format (IEC 60958). Supports sampling rate up to 192KHz
• » Output (each): Balanced/unbalanced line level audio on 6-pin terminal block. Drives 2VRMS line audio input with a sampling rate of 48KHz
• » Output (each): RCA female for digital audio following SPDIF format (IEC 60958). Supports sampling rate up to 192KHz
• » K-Factor: 0.22% @ optimal EQ
• » Video Isolation (Crosstalk): -45dB @ 5MHz
• » Analog Audio Max Input Level: 4dBu on 50k, AC coupling
• » Analog Audio Max Output Level: 4dBu on 150k, DC coupling
• » Audio Bandwidth: 20Hz to 20kHz @ 0dBu
• » TND + Noise: 0.33% @0dBu @ 1kHz
• » PCM Max Input Level: 1Vpp on 75, AC coupling
• » PCM Max Output Level: 1Vpp on 75, DC coupling
• » Wired IR: modulated IR signal input, 0-5V TTL or -10 to +10V
• » Power: 12V/2A (25W) AC Power Supply with Grounded, 2.1mm ID DC Power Jack with Screw In Type.

General:

• » Regulation: CE, RoHS, WEEE
• » Rack Mount: 1U, 1 Rack Width (rack ears included)
• » Enclosure: Black Metal
• » Product Dimensions: 17.5″ x 7″ x 1.75″
• » Shipping Carton Dimensions: 23.5″ x 11″ x 4.5″
• » Product Weight: 6 lb
• » Shipping Weight: 9 lb.

Important Product Warnings:

1. Connect all cables before providing power to the unit.
2. Test for proper operation before securing unit behind walls or in hard to access spaces.
3. If installing the unit into wall or mounting bracket into sheet-rock, provide proper screw support with bolts or sheet-rock anchors.

Safety Instructions:

Please be sure to follow these instructions for safe operation of your unit.

1. Read and follow all instructions.
2. Heed all warnings.
3. Do not use this device near water.
4. Clean only with dry cloth.
5. Install in accordance with the manufacturer’s instructions.
6. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
7. Only use attachments/accessories specified by the manufacturer.
8. Refer all servicing to qualified service personnel. Servicing is required when the device has been damaged in any way including:
   » Damage to the power supply or power plug
   » Exposure to rain or moisture

Power Supply Use:

You MUST use the Power Supply provided with your unit or you VOID the Key Digital® Warranty and risk damage to your unit and associated equipment.

How to Contact Key Digital®

System Design Group (SDG) For system design questions please contact us at:

Phone: 914-667-9700
E-mail: sdg@keydigital.com

Customer Support
For customer support questions please contact us at:

Phone: 914-667-9700
E-mail: customersupport@keydigital.com

Technical Support
For technical questions about using Key Digital® products, please contact us at:

Phone: 914-667-9700
E-mail: tech@keydigital.com

Repairs and Warranty Service
Should your product require warranty service or repair, please obtain a Key Digital® Return Material Authorization (RMA) number by contacting us at:

Phone: 914-667-9700
E-mail: rma@keydigital.com

Feedback
Please email any comments/questions about the manual to:

E-mail: customersupport@keydigital.com

Warranty Information

All Key Digital® products are built to high manufacturing standards and should provide years of trouble-free operation. They are backed by a Key Digital Limited 3 Year Product Warranty Policy. http://www.keydigital.com/warranty.htm

Key Digital® Systems :: 521 East 3rd Street :: Mount Vernon, NY 10553 Phone : 914.667.9700 Fax : 914.668.8666 Web : www.keydigital.com

References

• Manual-Hub.com - Free PDF manuals!
• keydigital.com
• keydigital.com/warranty.htm
• Manual-Hub.com – Free PDF manuals!

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