Eeek! (and you're welcome ;) )
My advice would be to try to find a way to reduce the source selections to an analog value or values -- I don't know enough about your architecture to select a specific method, and plus a guy has to keep some tricks up his sleeve. Use the analog(s) to deal with the signal routing [e.g. analog into ATOS to build the routing string for each matrix output] and group sources by input types (e.g. VGA sources, Composite sources, etc) and at most you're dealing with a handful of steppers
e.g Select PC1:
1) Initialize analog(s) for matrix(ies) and and send serial routing command based on the new analog value
2) Goes into OR for any PC source which kicks off Stepper for "any VGA input"
There are a bunch of ways to deal with this, some (my personal favorites) can do input selection, room power, and matrix routing kicking everything off with a single analog (which makes room combining REALLY easy ;) )
Lincoln
________________________________________
From: Crestron@... [Crestron@...] On Behalf Of jschaud [jschaud@...]
Sent: Monday, January 26, 2009 3:45 PM
To: Crestron@...
Subject: [Crestron] Lots of sources-- would like some advice
Been playing around on paper with a system that I have to work on
soon. Its going to be 21 video sources that will be routable to any of
8 tvs. There are a few different matrix switchers involved, fyi. I am
pretty sure that I am going to need 168 steppers to move each switcher
to the right position. I am just confused on the best way to trigger
each stepper.
I am going to use two different crosspoints--1 for the room and 1 for
the actual source (Thank you very much LKC, your advice is appreciated
more than you would believe) Should I just interlock the rooms and the
sources and use buffers to hit the correct stepper? It kind of feels
like a waste to go through that since I am already going to be using
crosspoints. Would analog equates using the equipment ID#s make any sense?
If I came out of the room analog equate into the enable line of 8
buffers, I could then put the 21 different sources into each of the
buffers using the analog equate outputs for the sources. So in total,
I am looking at
2 crosspoints --->
2 analog equates --->
8 buffers of 21 inputs --->
168 steppers
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