Dolby Laboratories CP65 - Manual (Page 65)

Action Indication Step
No.
5-52
B-Chain Alignment Procedures
i. Adjustment of Mono Gain and Equalization
1 NORMAL BYPASS
2
01 Mono
3
4
Dolby
gain mono
non-sync
gain
points test
mono eq
Ls
R
C
L
Ls
R
C
L
gnd
Ls
R
C
L
R
L
signal present
Cat. No.
242
5 REPEAT PAGE 5-20 STEP 2
bypass
(switch behind panel)
NORMAL BYPASS
6
7
B-Chain Alignment Procedures
Notes
5-53
i. Adjustment of Mono Gain and Equalization
Verify that the NORMAL/BYPASS switch is in the NORMAL position.
Select format 01 mono.
Thread and play a mono film. It is best to play a film familiar to you.
The mono eq control on the Cat. No. 242 card affects high frequencies and should
generally be left in the midpoint of its range to provide the “Academy” high-frequency
playback standard. Turn it to the midpoint of the range and listen to the film. If necessary,
adjust the control for pleasing sound.
While the film is running, repeat the mono gain adjustment (page 5.20) with the front panel
FADER set to 7.
While the film is running, place the NORMAL/BYPASS switch in the BYPASS position.
Verify that the sound level is acceptable in BYPASS, and that the volume remains nearly
the same as it was in NORMAL.
Remove the mono film from the projector.