Dolby Laboratories CP65 - Manual (Page 14)

2-8
CP65 Backplane
J16, J17 J24 Magnetic format headers: In the standard configuration the CP65 is
fitted with two channels of A-type noise reduction and therefore does not provide
processing for signals entering through the Mag/Aux inputs on TB3 and TB4. Fitting
Cat. No. 300 SR/A modules in place of the normal Cat. No. 350 SR modules provides
the two additional channels of A-type noise reduction needed for decoding magnetic
sound-tracks from 70mm Dolby Stereo (format 42) prints. Link headers J16 and J17
allow signals from the magnetic inputs to be routed through the noise reduction
circuitry; link J24 selects whether the noise reduction decoders are switched on when
the Mag/Aux format is selected.
Standard CP65 or CP65A
In a standard CP65 (fitted with one Cat. No. 222 and two Cat. No. 350 SR modules) or
a CP65-A (fitted with one Cat. No. 222 only) links J16 and J17 should be fitted so that
the words Format 22 appear the right way up. J24 should be fitted in the NO NR position.