Extron Electronics MPX Plus 866 A Rev. B - Manual (Page 13)

1-3 MPX Plus 866 A Media Presentation Matrix Switcher • Introduction
PRELIMINAR
Y
The MPX Plus 866 A has the following switching and mixing capabilities:
• An 8-input by 6-output VGA matrix switcher, comprising the computer video
group
• A 6-input by 6-ouput S-video and composite video matrix switcher, comprising
the low resolution video group
• A 14-input by 6-output primary audio matrix switcher, comprising the program
audio group
• Four mono microphone (mic)/line level inputs that can be mixed with one or all
audio outputs of the primary audio group
N Video ties can only be made within the same group (computer or low resolution).
Audio ties can be made only to outputs in the computer/audio group (outputs 1
through 6).
The switcher is a solution to complex simultaneous computer video, low resolution
video, and audio routing applications. Any input(s) within one of the two groups,
computer video and low resolution video, can be switched to any one or all
outputs within that same group. Each input and output is individually isolated
and buffered; switching is accomplished with virtually no crosstalk or signal noise
between channels.
The audio switching can either be linked with the video (audio follow) or
independent of the video (audio breakaway). The 14 inputs in the primary audio
group can be switched along with inputs from either video group (although audio
ties can only be made to the computer/audio group). Adjustable input audio gain
and attenuation compensates for level differences among audio inputs.
The mic/line inputs have a talkover feature that automatically reduces the primary
audio group when mic/line input is present. When the mic/line input is not
present, the primary audio group is restored to the set volume level. The mic
talkover threshold is adjustable from 0 dB to -60 dB.
The switcher has two, primary and secondary, rear panel RS-232 ports and a local
area network (LAN) Ethernet port for remote control and reporting. The matrix
switcher is programmed with Extron’s Simple Instruction Set (SIS ™ ), a set of basic
ASCII code commands that provide simple control through a control system or PC
without programming long, obscure strings of code. SIS commands can be entered
via the RS-232 ports or the LAN port.
The LAN port can be connected through a local area network (LAN) or wide area
network (WAN).