KD-HDMI2x1 & 4x1 Operating Instructions
Page 1
KD-HDMI2x1 & 4x1 Operating Instructions
Page 1
TeRmInoloGy
Some of the terms and acronyms that you will see recurring in this Key Digital
®
HDMI Switcher
Operating Manual are listed below.
CeC
Consumer Electronics
Control
CEC is an optional protocol used in HDMI systems that allows
HDMI devices to pass control functions along to all devices within
the system.
dvI-d
Digital Video Interface
- Digital
DVI-D is a digital interface standard created by the Digital Display
Working Group (DDWG) to convert analog video signals into digital
video signals to accommodate digital monitors. Typically used for
PC monitors, the video portion of HDMI as compatible with DVI-D
using simple adapters.
edId
Extended Display
Identification Data
EDID is a VESA standard data format that contains basic
information about a monitor and its capabilities. Information
includes vendor information, maximum image size, color
characteristics, factory pre-set timings, frequency range limits, and
character strings for the monitor name and serial number.
hdCP
High-bandwidth Digital
Content Protection
HDCP is the copy protection scheme adopted for use with HDMI.
hdmI
High-Definition
Multimedia Interface
HDMI is an uncompressed, all-digital audio/video interface that
supports over one cable standard-, enhanced-, and high-definition
video, and multi-channel audio. It is backward compatible with
DVI-D for the video portion, using simple adapters.
IR
Infrared
IR, like the Infrared remote control. Simply point the front of an IR
remote control unit towards the IR sensor on the product to be
controlled.
led
LEDs (light-emitting diodes) are like small light bulbs that light up
to indicate a selection, and are used as status indicators.
PCm,
digital
PCm
Pulse Code Modulation
PCM is a sampling technique for digitizing analog signals,
especially audio signals. PCM samples the signal 8000 times
a second; each sample is represented by 8 bits for a total of 64
kbps. Used in this Operating Manual to refer to digital audio.
RCa jack
An RCA jack or what was called a “phono plug” is an industry
standard audio connector used for the audio inputs and output of
KD-HDMI units. The left [white] jack is used for the digital audio
formats. Analog stereo audio uses both jacks, where white = the
left channel, and red = the right channel.
SPdIf,
S/PdIf
Sony/Philips Digital
Interface
SPDIF (also written as S/PDIF) is a standard audio file transfer
format, developed jointly by Sony and Philips corporations. S/PDIF
allows the transfer of digital audio signals from one device to
another without having to be converted first to an analog format.
Toslink
™
,
Toslink
Toslink was originally
created by Toshiba to
connect their CD players
to their receivers for
PCM audio streams
Toslink
™
(also written as TOSLINK
™
) is a standardized optical fiber
connection system, most commonly used in consumer audio
equipment to carry a digital audio stream between components.
fIRmWaRe uPGRadeS
From time-to-time, Key Digital
®
provides updates for the Firmware that operates and controls your
KD-HDMI. These updates are optional, and you should only perform upgrades as provided and
instructed by Key Digital
®
. Periodically check our web site at www.keydigital.com for the latest
firmware updates for your unit.
Should a Firmware Upgrade be available that you are interested in installing,
please contact Key
Digital
®
with the Serial Number of your unit to determine the correct Firmware
Upgrade procedure.
You will then be instructed to go to our web site at www.keydigital.com for the Firmware Upgrade
instructions and file downloads.
firmware upgrade Procedure
Please review all steps first, before proceeding to upgrade your Unit.
Make sure you have the required equipment for upgrade:
a. PC with a serial port capable of 19200 Baud rate
b. Straight male-female DB9 serial cable (Null-modem NOT supported)
no longer then 10 ft.
Set the rear-panel Mode slide switch to “Mode A” mode.
Check our web site at www.keydigital.com for the latest firmware update ZIP file. Download
and unzip the firmware ZIP file to any directory on your PC. All of the unzipped files that are
created MUST be located in same directory on your PC.
Make sure that no devices are using the COM1 serial port on your PC.
Connect an RS-232 cable to the COM1 serial port on your PC, and the other end to the
RS-232 port on the rear panel of the KD-HDMI unit.
Double-click the “
hdmIxx.baT
” file. The command mode window should pop up. Use this
pop-up window to monitor the progress of the Firmware Upgrade.
If an error occurs, check your RS-232 connection and repeat all of the above steps.
When the download is complete, disconnected the power supply form your KD-HDMI unit.
The power supply MUST be disconnected (either from the back of your unit or from the wall
outlet) to have a complete power shutdown - reset.
Disconnect the RS-232 cable between the unit and your PC
With the power disconnected, set the rear-panel Mode slide switch to “Normal” mode.
Reconnect the power supply
to your KD-HDMI unit. The Firmware Upgrade is complete,
and your KD-HDMI unit is ready for operation.
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