Hall Research Technologies, Inc. Model DVS-4A 4-Port DVI Switch with Audio, Serial Control & Long Cable Equalization UMA1129 Rev B © Copyright 2007. Hall Research Technologies, Inc.
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.
-Port DVI Switch with Audio & Serial Control Table of Contents 1.0 General ................................................................................................ 3 2.0 Features................................................................................................ 4 3.0 Installation ........................................................................................... 5 . Required Cables..................................................................................... 5 .
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.
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.
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’.
4-Port DVI Switch with Audio & Serial Control .
4-Port DVI Switch with Audio & Serial Control 4.0 Operation . Manually Switched Output The SEL1 through SEL 4 buttons are used to select between video & audio input sources of Video 1 through Video 4. A solid-on LED is used to indicate which input is selected. Holding down any of the SEL buttons for 3 seconds will blank that selected input source (and mute the audio output). The LED for that selected input will start blinking to indicate the blanking mode.
4-Port DVI Switch with Audio & Serial Control . Priority Selection in Auto Mode The priority of the Video 1 through Video 4 inputs can only be selected by a command through the RS232 port. This priority selection only applies to Auto mode. If a video priority is selected, the DVS-4A will automatically select that ‘Video' input whenever it detects the presence of a video signal at that ‘Video’ connector, regardless of what is happening at the other ‘Video’ connectors.
4-Port DVI Switch with Audio & Serial Control . RS-232 Control Port Usage The DVS-4A can also be controlled via a serial device. The unit operates at a baud rate of 4800 bps. From the serial port, you have full control over the operation of the switched output, mode, and priority buttons. Note on the RS-232 port availability on your PC Most PCs and notebooks do not have a serial port. So to program the Switch you may need a USB to RS-232 Serial converter.
4-Port DVI Switch with Audio & Serial Control After power-up the unit will output the following menu in ASCII through its serial port: MENU - Version 1.0 ----------------------------------------1 = Video 1 Input | B = Blank 2 = Video 2 Input | U = Un-blank 3 = Video 3 Input | E = Enable boost 4 = Video 4 Input | D = Disable boost A = Auto mode | R = Report S = Scan mode | F = Factory defaults P = Priority | M = Menu ----------------------------------------- .
4-Port DVI Switch with Audio & Serial Control ASCII ‘4’ (Hex 34 or Decimal 52) Selects Video input #4 (immediately and unconditionally). If the unit was in AUTO mode, then MANUAL mode is selected. The device will respond with: Video 4 selected ASCII ‘A’ or ‘a’ (Hex 41/61 or Decimal 65/97) Enters Auto mode.
4-Port DVI Switch with Audio & Serial Control ASCII ‘P’ or ‘p’ (Hex 50/70 or Decimal 80/112) Selects the Video Input priority. A message is displayed in the format of: Video X priority is [Y] (1-4]? Where ‘X’ is the video input (1-4) and ‘Y’ is the current priority (1-4). The user must respond within 20 seconds and with values in the range of 1-4 or the error message: Invalid input! Please select ‘Priority’ again will be displayed. If ‘0’ is input, the message No change was made will be displayed.
4-Port DVI Switch with Audio & Serial Control ASCII ‘D’ or‘d’ (Hex 44/64 or Decimal 68/100) Causes the output signal equalization for long cabling to be disabled. The device will respond with: Boost disabled ASCII ‘R’ or ‘r’ (Hex 52/72 or Decimal 82/114) Request the status report.
4-Port DVI Switch with Audio & Serial Control ASCII ‘S’ or ‘s’ (Hex 53/73 or Decimal 83/115 ) Enters Scan Mode If the unit was already in SCAN mode, the unit will respond with the message: Scan mode already selected The user must select the desired scan time by entering a number from 1 to 60 within 20 seconds. Entries outside this range or delaying entry longer than 20 seconds will result in a default setting of 5 seconds.
4-Port DVI Switch with Audio & Serial Control ASCII ‘M’ or ‘m’ (Hex 4D/6d or Decimal 77/109) Displays the menu. The device will respond with: MENU - Version 1.
4-Port DVI Switch with Audio & Serial Control 5.0 Troubleshooting Make sure that all your connections are solid, and check the state of the LED’s on the front of the unit. Do not open or try to repair the unit yourself. There is no customer repairable item in the unit and you will void your warranty. Contact HRT Support at 714-641-6607 or via email or web. If you need to ship your switch for repair, make sure to get a Return Material Authorization (RMA) number first.
4-Port DVI Switch with Audio & Serial Control 6.0 Specifications Video Inputs DVI-D Single Link, HDCP & HDMI 1.3 Compliant Resolutions PC resolutions up to 1920x1200 @ 60 Hz and HDTV to 1080p Audio Inputs PC audio outputs Temperature Operating: 32 to 122°F (0 to 50°C); Storage: –40 to +185°F (–40 to +85°C) Enclosure Steel MTBF 90,000 hours (calculated estimate) Power 6V center positive via supplied Universal power supply Size 1.66" High x 8.42" Wide x 2.61” Deep Weight 2.
4-Port DVI Switch with Audio & Serial Control 18
4-Port DVI Switch with Audio & Serial Control 19
Product Designed and Made in the USA + © Copyright 2007 - Hall Research Technologies, Inc.