Film-Tech Forum ARCHIVE: CP-65 150 card

This is topic CP-65 150 card in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

To visit this topic, use this URL:
https://ft-forum.com/ft/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=16;t=002264

Posted by Richard May (Member # 2627) on 04-03-2015, 12:18 PM:

I had a call the other night that a CP-65 was stuck in bypass and they had no sound. It turns out the 150 card went bad. I pulled it out and all was good. Since the 150 card is not needed for digital sound or non sync, should I just pull them out of all the units? Will this help the load on the transformers if removed, or will it cause any negative affects, or it really doesn't matter?

Posted by Pete Naples (Member # 761) on 04-03-2015, 12:31 PM:

It's involved in the Non-Sync signal path, that much I do remember.

Anymore I'd have to dig out a dusty old book.

Posted by Richard May (Member # 2627) on 04-03-2015, 02:41 PM:

Non sync still plays though.

Posted by Steve Guttag (Member # 268) on 04-03-2015, 02:56 PM:

Its only used IF you are in 2:4 mode for Non-Sync or if you want "magic surrounds" to play from Stereo sources on normal 2-channel.

Otherwise, you can live without it.

Posted by Pete Naples (Member # 761) on 04-04-2015, 03:09 PM:

Spot on Steve. I just reminded myself with a look in the book.

Posted by Mark Gulbrandsen (Member # 72) on 04-05-2015, 10:26 PM:

I pulled everything up to the decoder in all Dolby, Panastereo and USL units. It also makes things easier going on the power supplies.

Mark