Hall Research VS-2A-PRG - Manual (Page 4)

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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).