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Old 07-08-2018, 03:29 PM
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MIPS MIPS is offline
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Central Dynamics Video Switcher/Keyer

This was at a local recycling resale depot and I couldn't resist paying $25.

In one word, it's impressive. Manufactured by Central Dynamics in Montreal with everything date stamped between 1976 and 1978. Serial number 005.
I have been unable to find any documentation for this so I'm not completely sure how to wire it up. Some of the connections are clearly marked but others are not. What are the odds the manual has been scanned in?
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Old 07-08-2018, 06:47 PM
Chip Chester Chip Chester is offline
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Assuming you get it powered up via careful investigation of polarity within the PSU board... The rest of the hookup is very straightforward. Three program out feeds, two preview feeds P/V...
Sync, subcarrier, blanking are looping inputs -- in via top, out to other stuff (or terminated 75 ohms) on the bottom. Likewise all the inputs are looping inputs (/L), with in at the top and out or term on the bottom. Tally is labeled. Chroma-key will need some research... but it's probably three or four pots to adjust things. They're on the front panel, so that's probably optional. External chroma key, downstream key might need some study too... but it's a vid input.

Effects out and black out on far left. I would guess effects is usually used internal to the switcher, but there may be circumstances it would need an output individually, I guess.

You'll need to find a sync generator to make things happen. And have all your sources timed to the switcher, which means no free-running DVD sources (unless it's the only one, and you sync to it...) I'm sure there are generic hook up charts for things like a Grass Valley 100 that would be similar you could use for reference.

That is, if it works.

If it doesn't, you can use it to control a spaceship or something...

Good luck!
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Old 07-09-2018, 02:26 AM
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MadMan MadMan is offline
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Old 09-14-2018, 06:56 PM
BBTV BBTV is offline
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Cool switcher. I had the pleasure of having a 3M/E version in a small truck back in the day. Lots of power for a fraction of the cost of a GVG back then.
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