HRT VS-4A, User Manual

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4 Channel VGA Switch w/Audio & Serial C
ontrol
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1. Introduction
1.1 General
Thank you for purchasing Hall Research Technologies VS-4A 4x1
VGA Switch with Audio & Serial Control.
This unit provides a video along with audio output that can be
switched between four video and audio sources. The unit is
housed in a small RFI shielded enclosure and is supplied with a
universal AC power adapter.
The VS-4A unit provides all the A/V and control connections on
the rear panel; the front panel has push-button switches with
corresponding LED indicators for the selection of the video
source. This unit can be controlled either manually using the front
panel switches, automatically based on video detection, or
remotely through an RS232 serial port.
The unit can be configured to operate in three different modes,
which are: Auto, Scan and Normal. There is a priority selection
that can be used to set for the video inputs. The switched output
can be blanked and un-blanked from the PC command sent
through the serial port. The front-panel buttons can be ‘locked’ to
prevent accidental changes to the settings from a PC command
sent through the serial port.
The unit also has EEPROM (internal non-volatile flash memory) to
restore the last operating mode from when the unit is powered off.
1.2 Features
9 Allows four video & stereo audio input sources to be
switched to one output
9 Can be manually controlled by push-button, via RS232
communication port or by detecting active video input
9 Auto mode automatically scans and selects the input with
active video with selectable input priorities
9 Front panel buttons can be ‘Locked’ out
9 Switched output can be blanked and un-blanked
9 Stores the last selection and mode in EEPROM
9 In scanning mode inputs are shown for pre-determined
periods
9 Ships with power supply
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Compact, Rugged, Reliable, and Economical and Made in
USA