Hall Research VS-2A-PRG User Manual
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Model VS-2A-PRG
2-Port VGA Switch with Audio, Serial Control
& EDID Programming
© Co
ht 2010 Hall Research Inc. All rights reserved.
UMA1156 Rev C
1163 Warner Ave Tustin, CA 92780, Ph: (714)641-6607, Fax -6698
M odel VS-2A
2
2-Port VGA Switch w/Audio, Serial & EDID Programmin
g
Table of Contents
1.0 GENERAL ......................................................................................... 2
2.0 FEATURES........................................................................................ 3
3.0 INSTALLATION............................................................................... 4
. REQUIRED CABLES.............................................................................. 4
. INPUTS & OUTPUTS ............................................................................. 4
. CONNECTING THE VS-2A-PRG........................................................... 4
. CONNECTION DIAGRAM ...................................................................... 5
4.0 OPERATION ..................................................................................... 5
. SWITCHED OUTPUT ............................................................................. 5
. MODES OF OPERATION........................................................................ 6
. FRONT PANEL LOCKOUT ..................................................................... 6
. PRIORITY SELECTION IN AUTO MODE ................................................. 6
. RS-232 CONTROL ............................................................................... 7
. TO CONFIGURE HYPERTERMINAL........................................................ 7
. CONTROL CODES (1 BYTE COMMANDS FROM EXTERNAL CONTROL
) .................................................................................................. 8
DEVICE
5.0 EDID PROGRAMMING................................................................ 13
6.0 TROUBLESHOOTING .................................................................. 14
7.0 SPECIFICATIONS ......................................................................... 15
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Model VS-2A-PRG
1.0 General
Thank you for purchasing the Hall Research Model VS-2A-PRG 2-Port
VGA Switch with Audio, Serial Control and EDID Programming
capabilities.
This unit provides a video along with audio output that can be switched
between two video and audio sources. The unit also has a loop-out for PC
#1 Input for connection to a local LCD.
The VS-2A-PRG 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. The front panel also
features mode selection buttons to allow the unit to operate automatically
(based on video sync detection). This unit can be controlled either
manually using the front panel switch, automatically based on video sync
detection, or remotely through an RS232 serial port.
The unit can be configured to operate in two different modes, which are
Auto and Manual modes. There is a priority selection that can be used to
set for none, Input #1 or Input #2. Switched output can be blanked and
un-blanked either from the front panel button or from the PC command
sending through the serial port.
The unit also has EEPROM (internal non-volatile flash memory) to store
the last operating mode when power is off.
The unit also has the capability to read the EDID (Extended Display
Identification) information from the device connected to the SW
OUTPUT VGA Connector. This information is stored in the VS-2A-PRG
EEPROM and can be written to another device that supports EDID such
as the Hall Research Mini-Cat Sender (UV1-S) or an EDID Emulator
plug (EMU-EDID-HD15). This will allow the PC that the Mini-Cat
sender (or EDID Emulator) is connected to emulate the actual monitor
connected to the Mini-Cat receiver (or other Hall Research product).
2
2-Port VGA Switch w/Audio, Serial & EDID Programmin
g
2.0 Features
9 Read and Write EDID Information
9 Capability to download EDID info from PC into unit
9 Allows one video with stereo audio to be switched between two
video and audio sources
9 Loop-out for input #1 audio and video
9 Can be manually controlled by push-button switch buttons or
remotely by RS232 communication port
9 Provides Auto mode to automatically select input source
9 Auto Mode priority can be set for input #1, input #2 or no-priority
9 Switched output can be blanked and un-blanked
9 Stores the last selection and mode in EEPROM
9 Compact, Rugged, Reliable, and Economical
9 Made in USA
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Model VS-2A-PRG
3.0 Installation
. Required Cables
The video input cables are generally HD15 (VGA) male to male
(customer furnished). The Audio inputs are 3.5 mm mini-stereo (also
customer furnished). If you are going to connect the unit to a Serial port
(such as PC’s COM) you would need a Male/Female DB9 Serial Cable.
NOTE: For EDID Programming the only cables required are for the
Monitor and the RS232 connection.
. Inputs & Outputs
The VS-2A-PRG has 2 video and audio inputs: PC 1 Input and PC 2
Input. The unit has 1 video and audio output: SW Output. There is a
local video and audio output, which is a loop-out for PC 1 Input: Local.
. Connecting the VS-2A-PRG
NOTE: For EDID Programming, ONLY CONNECT THE RS232
cable and the ‘SW OUTPUT’ Connector to the device to read/write
the EDID information. No connections should be made to the ‘PC1
Input’ and ‘PC2 Input’ connectors.
Connect your video and audio sources such as computer or notebook PC
to PC 1 Input and PC 2 Input. If the loop-out for input #1 is desired, it
can be connected to local video and audio.
Connect the display device such as a monitor (or a video projector) to the
switched video and audio outputs (SW Output).
Connect the included power supply to the VS-2A-PRG.
Select the desired mode of operation including the priority for your video
and audio output using the front panel switched buttons. If preferred, the
selection can also be done through RS-232 serial commands by
connecting a DB9 RS-232 Serial cable to your PC and the VS-2A-PRG.
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