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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Comp. Eng. Analog Reader: Cut the jumpers?

   
Author Topic: Comp. Eng. Analog Reader: Cut the jumpers?
Randy Stankey
Film God

Posts: 6539
From: Erie, Pennsylvania
Registered: Jun 99


 - posted 01-07-2011 11:41 AM      Profile for Randy Stankey   Email Randy Stankey   Send New Private Message       Edit/Delete Post 
Question 2:

While working on the installation of a new processor I found that the jumpers on the C.E. analog reader are still intact. (JP3 & JP4)

It is my recollection that those jumpers should be cut to increase the gain of the preamps, thus requiring less power to the LED. If memory serves, C.E. is/was shipping new units without the jumper.

So... Should I cut them or leave them be?

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Louis Bornwasser
Film God

Posts: 4441
From: prospect ky usa
Registered: Mar 2005


 - posted 01-07-2011 12:44 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
Cut 'em. Louis

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Randy Stankey
Film God

Posts: 6539
From: Erie, Pennsylvania
Registered: Jun 99


 - posted 01-07-2011 12:46 PM      Profile for Randy Stankey   Email Randy Stankey   Send New Private Message       Edit/Delete Post 
Snip, snip!

[Big Grin]

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Sam D. Chavez
Film God

Posts: 2153
From: Martinez, CA USA
Registered: Aug 2003


 - posted 01-07-2011 05:52 PM      Profile for Sam D. Chavez   Author's Homepage     Send New Private Message       Edit/Delete Post 
Caveat. You get 6 dB more noise by cutting the gain jumpers. They are intended to be cut when you can no longer get enough light to make Dolby level.

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Randy Stankey
Film God

Posts: 6539
From: Erie, Pennsylvania
Registered: Jun 99


 - posted 01-07-2011 06:02 PM      Profile for Randy Stankey   Email Randy Stankey   Send New Private Message       Edit/Delete Post 
I don't think this will be a problem. Just ran new wires to the cell.

There's a whole lot less noise than there used to be even with the jumpers cut.

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