User Manual

ManualsBrandsKey Digital ManualsA/V Cables & Connectors8x8 Audio Matrix Switcher - Black

2 3

Connections, Buttons and LEDs

Balanced/Unbalanced Analog Audio Inputs and Outputs

› Each output and input features one analog 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 analog 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 analog 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

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 analog 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:

Audio Input

Signal Format

Audio L/R

Output

Digital Audio

Output

2CH PCM Pass-through Pass-through

Multi-Channel PCM MUTE MUTE

DOLBY/DTS MUTE Pass-through

HD Audio MUTE MUTE

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

KD-MAX8x8 Manual.indd 2-3 12/23/17 2:18 AM