Introduction, 1 general, 2 features – Black Box AC506A User Manual
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4x1 Compact VGA Switch
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1. Introduction
1.1 General
The Model AC506A is a versatile, compact, high performance, solid-state, 
4 input x 1 output, VGA video switch that can operate at resolutions of up 
to 1600x1200. 
The unit allows one monitor to be switched between 4 video sources. The 
unit is housed in a small RFI shielded enclosure and is supplied with an 
AC power adapter and a Serial (RS-232) control cable for connecting to a 
PC or other serial control device. 
The device terminates all video inputs and buffers the output to protect 
signal integrity. The Model AC506A can drive video cables to 150 feet or 
more. The input and output connectors are all HD15 Female. 
There are several ways to control the AC506A. There are 4 buttons on the 
front of the AC506A, each corresponding to a VGA input signal and there 
is a serial port on the back of the AC506A. The serial port is used to 
control the AC506A via a hyper terminal application on a PC. The unit 
features Auto and Scan modes that can be invoked either from front panel 
or by serial commands as well. 
1.2 Features
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Can be controlled manually, via Serial port, or automatically 
based on video 
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Output can be blanked
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User assigned priorities in Auto mode
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Infinite switching cycle life
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Can drive long cables
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Terminates input signals and buffers the output for best 
integrity 
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Includes power adapter and serial cables for control