Hall Research Technologies, Inc. Model DVS-2A 2-Port DVI Switch with Audio, Serial Control & Long Cable Equalization UMA1127 Rev B © Copyright 2007. Hall Research Technologies, Inc.
2-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.
2-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 .
2-Port DVI Switch with Audio & Serial Control 1.0 General Thank you for purchasing Hall Research Technologies’ DVS-2A 2-Port DVI Switch with Audio & Serial Control. This unit provides both a video and audio output that can be switched between two 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.
2-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.
2-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-2A has 2 video and audio inputs labeled ‘Input 1’ and ‘Input 2’.
2-Port DVI Switch with Audio & Serial Control .
2-Port DVI Switch with Audio & Serial Control 4.0 Operation . Switched Output The switched output SELECT button is used to select between video & audio input sources of PC 1 and PC 2. A solid-on LED is used to indicate which input is selected. Holding down the switched output SELECT button for 3 seconds will blank the current selected input source (and mute the audio output). The LED for the current selected input will start blinking to indicate the blanking mode.
2-Port DVI Switch with Audio & Serial Control . Priority Selection in Auto Mode The priority button is used to select the priority as NONE or as INPUT 1. This priority selection only applies to Auto mode. If INP 1 priority is selected, the DVS-2A will automatically select ‘Input 1' whenever it detects the presence of video at ‘Input 1’ connector, regardless of what is happening at the ‘Input 2’ connector.
2-Port DVI Switch with Audio & Serial Control The DVS-2A will output a menu to the serial port on power-up. This menu can also be displayed when the appropriate command is sent to the DVS-2A via the serial port. To view the menu, an ASCII serial terminal or terminal emulator software is needed. An example is Microsoft Windows HyperTerminal (generally found in the Accessories -> Communication folder) .
2-Port DVI Switch with Audio & Serial Control . Serial Port Control Codes Control codes are 1 byte commands from an external device to the Serial Port on the DVS-2A. ASCII ‘1’ (Hex 31 or Decimal 49) Selects input #1 (immediately and unconditionally). The device will respond with: PC 1 Input selected If the device is in AUTO mode, the device will respond with: Error: The unit is in auto mode ASCII ‘2’ (Hex 32 or Decimal 50) Selects input #2 (immediately and unconditionally).
2-Port DVI Switch with Audio & Serial Control ASCII ‘A’ or ‘a’ (Hex 41/61 or Decimal 65/97 ) Enters Auto mode. The user must select the desired detection method by entering a number from 1 to 3 within 20 seconds. Values outside this range or delaying entry longer than 20 seconds will result in an error message: Invalid entry! Current detection stays the same.
2-Port DVI Switch with Audio & Serial Control ASCII ‘P’ or ‘p’ (Hex 50/70 or Decimal 80/112) Selects Input #1 priority. The device will respond with: PC 1 priority selected If ‘Input #1’ priority is selected, the unit will select input #1 automatically whenever the presence of the video at the ‘Input 1’ DVI connector is detected even if the output from ‘Input 2’ is currently playing. ASCII ‘N’ or ‘n’ (Hex 4E/6E or Decimal 78/110) Selects no priority for Input #1.
2-Port DVI Switch with Audio & Serial Control ASCII ‘R’ or ‘r’ (Hex 52/72 or Decimal 82/114) Request the status report. The device will respond with a display similar to below: Report --------------------Input = 1 Mode = Auto Priority = None Blank = Off Boost = Disabled Detection method = Vertical sync This report displays the current selection of the switched output, mode, and priority buttons. ASCII ‘C’ or ‘c’ (Hex 43/63 or Decimal 67/99) Displays the menu. The device will respond with: MENU - Version 1.
2-Port DVI Switch with Audio & Serial Control ASCII ‘v’ (Hex 76 or Decimal 118) Causes the system to display the firmware version number. The device will respond with: Firmware Version: X.Y where ‘X.Y’ is the numeric version level of the firmware software. 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.
2-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 1.3" High x 8.5" Wide x 2.6” Deep Weight 1.
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Product Designed and Made in the USA +