MJLorton Solar Power and Electronic Measurement Equipment Forum

Older Technology => Older Technology => Topic started by: SeanB on September 26, 2013, 04:04:59 PM

Title: Video switch
Post by: SeanB on September 26, 2013, 04:04:59 PM

Here is an old video switcher. Can either do a sequential switch between the 4 inputs, or do a composite of all 4 inputs on a single screen.

(http://farm3.staticflickr.com/2845/9914142245_b8050402b2.jpg) (http://www.flickr.com/photos/33277124@N08/9914142245/)
IMG_1289 (http://www.flickr.com/photos/33277124@N08/9914142245/) by SeanB_ZA (http://www.flickr.com/people/33277124@N08/), on Flickr

The front panel with the whole 2 controls.

(http://farm4.staticflickr.com/3682/9914239294_78c1785a6c.jpg) (http://www.flickr.com/photos/33277124@N08/9914239294/)
IMG_1290 (http://www.flickr.com/photos/33277124@N08/9914239294/) by SeanB_ZA (http://www.flickr.com/people/33277124@N08/), on Flickr

Inside, with the SMPS on the left and the big board doing the heavy lifting.

(http://farm8.staticflickr.com/7429/9914364763_98709b5c75.jpg) (http://www.flickr.com/photos/33277124@N08/9914364763/)
IMG_1292 (http://www.flickr.com/photos/33277124@N08/9914364763/) by SeanB_ZA (http://www.flickr.com/people/33277124@N08/), on Flickr

Heavy video work done by 2 Rockwell 6545 CRT controllers.

(http://farm6.staticflickr.com/5338/9914284114_c7e297affc.jpg) (http://www.flickr.com/photos/33277124@N08/9914284114/)
IMG_1293 (http://www.flickr.com/photos/33277124@N08/9914284114/) by SeanB_ZA (http://www.flickr.com/people/33277124@N08/), on Flickr

A whole lot of DRAM, 24k in total.......

(http://farm8.staticflickr.com/7439/9914211175_5fc0b594ee.jpg) (http://www.flickr.com/photos/33277124@N08/9914211175/)
IMG_1294 (http://www.flickr.com/photos/33277124@N08/9914211175/) by SeanB_ZA (http://www.flickr.com/people/33277124@N08/), on Flickr

The brains of the operation, Genuine Intel 8031.

Operation was to give about 1 update every 2 seconds, or to show a full screen of a single channel at about 1Hz. Picture would be monochrome, even with a colour input it gave no colour info out, just a greyscale and limited scale at that.

Title: Re: Video switch
Post by: TechJunkie on November 04, 2013, 07:33:35 PM

Look at all those DIPS!  ;D

Title: Re: Video switch
Post by: TVman on June 04, 2014, 12:11:57 AM

I have a 16 channel one! :D
I think its used for CCTV cameras.(http://www.eevblog.com/forum/Smileys/default/confused0024.gif)