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Model DVS-4A
4-Port DVI Switch with Audio, Serial Control &
Long Cable Equalization
UMA1129
Rev B
© Copyright 2007. Hall Research Technologies, Inc. All rights
1163 Warner Ave Tustin, CA 92780, Ph: (714)641-6607, Fax -6698
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4-Port DVI Switch with Audio & Serial Control
Trademarks Used In this Manual
Hall Research, HRT, and (logo) are trademarks of Hall Research
Technologies, Inc. Any other trademarks mentioned in this manual are
acknowledged to be the property of the trademark owners.
Federal Communications Commission Statement
This equipment generates uses and radiates radio frequency energy and, if
not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. This equipment has been
tested and found to comply with the limits for a Class A computing
device, pursuant to Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful interference when operated
in a commercial environment. Operation of this equipment in a residential
area may cause interference, in which case the user, at their own expense;
will be required to take whatever measures are necessary to correct the
interference.
European Union Declaration of Conformity
This product has been tested and shown to comply with the
requirements of the European EMC directive 89/336/EEC.
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Table of Contents
4-Port DVI Switch with Audio & Serial Control
1.0 General ................................................................................................ 3
2.0 Features................................................................................................ 4
3.0 Installation ........................................................................................... 5
. Required Cables..................................................................................... 5
. Inputs & Outputs ................................................................................... 5
. Connecting the DVS-4A........................................................................ 5
. Connection Diagram.............................................................................. 6
4.0 Operation ............................................................................................. 7
. Manually Switched Output .................................................................... 7
. Modes of Operation ............................................................................... 7
. Priority Selection in Auto Mode............................................................ 8
. Long Cable Equalization ....................................................................... 8
. Scan Mode ............................................................................................. 8
. RS-232 Control Port Usage ................................................................... 9
. To configure HyperTerminal................................................................. 9
. Serial Port Control Codes .................................................................... 10
5.0 Troubleshooting................................................................................. 16
6.0 Specifications..................................................................................... 17
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4-Port DVI Switch with Audio & Serial Control
1.0 General
Thank you for purchasing Hall Research Technologies’ DVS-4A 4-Port
DVI Switch with Audio & Serial Control.
This unit provides both a video and audio output that can be switched
between four video and audio sources. This allows routing of multiple
DVI equipped devices (such as PC’s) to a single DVI display (such as a
plasma or LCD screen). The switcher supports single-link, DVI-D video
signals at resolutions up to 1920x1200 and HDTV up to 1080p.
The DVS-4A unit provides all the A/V and control connections on the
rear panel; the front panel has a push-button switch with corresponding
LED indicator for the selection of video source.
This unit can be controlled by either manually
switch, automatically
RS232 serial port.
The unit can be configured to operate in three different modes, which are
the Auto, Scan and Manual modes.
The unit also has EEPROM (internal non-volatile flash memory) to store
the last operating mode when power is off.
based on video detection, or remotely through an
using the front panel
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4-Port DVI Switch with Audio & Serial Control
2.0 Features
9 Clear and sharp images at resolutions up to 1920x1200 including
HDTV up to 1080p
9 Hot pluggable
9 Supports the DDC2 standard for all input ports
9 HDCP & HDMI 1.3 Compatible
9 Allows one video with stereo audio to be switched between four
video and audio sources
9 Can be manually controlled by push-button switches, remotely by a
RS232 communication port
9 Provides an Auto mode to automatically select input source
9 Auto Mode priority can be set for any input or no-priority
9 Scan Mode shows each output for a programmable time period
9 Switched output can be blanked and un-blanked
9 Video Cable Equalization available for long cabling
9 Stores the last selection and mode in EEPROM
9 Compatible with the Universal Mounting Bracket
9 Ships with universal (100~240 VAC) power supply
9 Compact, Rugged, Reliable, and Economical
9 Made in USA
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4-Port DVI Switch with Audio & Serial Control
3.0 Installation
. Required Cables
The video input cables are generally DVI male to male (customer
furnished). The Audio inputs are 3.5 mm mini-stereo (customer
furnished). To connect to the unit to a Serial port (such as PC’s COM1)
you would need a Male/Female DB9 Serial Cable (customer furnished).
All of these items are available for purchase upon request.
. Inputs & Outputs
The DVS-4A has 4 video and audio inputs labeled ‘Video 1’ through
‘Video 4’. The unit has 1 video and audio output labeled ‘Video Output’.
. Connecting the DVS-4A
Connect your video and audio sources such as computer or notebook PC
to ‘Video 1’, ‘Video 2’, ‘Video 3’ and/or ‘Video 4’ connector(s).
Connect the display device such as a monitor (or a video projector) to the
switched video and audio output connectors.
Connect the included power supply to the DVS-4A.
Select the desired mode of operation (Auto, Scan or Manual) using the
front panel switched buttons. (Auto = SEL 1 & SEL 2, Scan = SEL 3 &
SEL 4)
If preferred, the above selections (and more) can also be done through
RS-232 serial commands by connecting a DB9 RS-232 Serial cable to
your PC and the DVS-4A.
The device can be mounted via a Universal Mounting Bracket (sold
separately) if desired.
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4-Port DVI Switch with Audio & Serial Control
. Connection Diagram
MODEL DVS-4A REAR PANEL
Universal Mounting Bracket
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