User`s manual

Alcorn McBride Digital Video Machine HD User’s Manual Rev 1.0

Triggering Synchronized DVMHD’s Simultaneously

If you remember the discussion at the beginning of the Synchronizing Multiple

DVMHD’s section, you’ll recall that there are two requirements for playing

synchronous video. We’ve already taken care of the first requirement in the Sharing

Video Sync Between DVMHD’s section, so now it’s time to take care of the second

part; telling the DVMHD’s to play simultaneously at the correct moment.

Accomplishing this requires a control system with enough RS-232 control ports or

Ethernet capability to interface to each DVMHD as well as the ability to accept an

external video sync source. Alcorn McBride specializes in designing and

manufacturing these types of controllers. Each of our show controllers has feature

sets that allow them to support different applications. To determine which controller is

best for your application, be sure to check out our website at http://www.alcorn.com

and/or contact an Alcorn McBride representative.

When you are ready to install the controller, you should connect its sync input to the

same sync source you are using for your DVMHD’s. Once you have done that, you

just need to establish communications between the DVMHD and Show Controller

using the appropriate cabling.

The only remaining work is to write a script, or program, using a Windows application

called WinScript. This script is what is eventually transferred to the controller to tell it

what to do and when. Although writing scripts for our show controllers is beyond the

scope of this manual, there is an example script called SYNC2UNITS included with

WinScript that implements synchronized playback between 2 video players. This is a

great place pickup the basics without the need to create a script from scratch.