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Page 28 MAXX-2400HD Owner’s Manual
Figure 4 - CXP Connection to MAXX-2400HD.
Serial Control Ports for Channels 1, 2, 3 & 4
Each of the four 9-pin “D” connectors on the CXP module provides independent control of the
four video channels. They accept serial commands in VDCP, BVW or Odetics protocol. The
multiple serial ports allow simultaneous connection of an automation controller and a desktop
controller. See the chapter on Automation Control for further details.
Most broadcast automation systems and some remote control panels employ VDCP protocol.
Many controllers used for transport, instant replay, and edit control employ BVW or Odetics
protocol.
Figure 5 - CXP Module Connectors
GPI Control
The MAXX-2400HD provides twelve GPI inputs for control of machine functions, which
appear on two 25-pin GPI
GPIGPI
GPI connectors. This “General Purpose Interface” can be connected to
switch contacts or to an open-collector transistor output. GPI inputs are programmable, and can
provide machine control such as PLAY, STOP, or RECORD through simple external switches.
The MAXX-2400HD also provides twelve GPI outputs which may be used to confirm that a
command has been received, or for other purposes. The function of these open-collector outputs is
programmable; they may be used to operate an LED, or they can drive a suitable logic input. The
pin-out for the GPI connectors will be found in APPENDIX A.