User`s manual

2-2
2.1.3 Disconnect the old system
Disconnect power from the existing cinema sound equipment.
Mark each cable to an existing sound processor identifying its function,
then disconnect the cabling. Leave the cables connected to the power
amplifiers, booth monitor, etc.
2.2 Mount the CP45
Open the front panel and confirm that all modules and and circuit cards
are seated properly.
Close the front panel and cut the cable ties located on the bottom of the
unit used for shipping the Cat. No.222 SR/A module in the CP45.
To avoid heat problems, do not mount the Dolby CP45 immediately
above or below the power amplifiers. Locate the power amplifiers away
from the CP45 to avoid hum pickup problems.
Always leave a 1U (43 mm, 1.75") space above and below the CP45 to
provide adequate ventilation. Install an air guide or baffle to deflect hot
air from equipment below the CP45.
2.3 Connect the CP45
Refer to the fold-out pages located at the end of this section. Use the
appropriate pages for your installation.
Make input and output signal connections by inserting stripped and
tinned leads into the supplied cable connectors and tightening each lead
in place by means of the integral set screw. The cable connectors are
then plugged into place at the corresponding locations shown on the
fold-out wiring diagrams. To provide proper operation in locations
where there is a large RF or other interference field, ensure that the cable
types, lengths and pin assignments are strictly adhered to. Shields must
go only to the chassis lugs and should not be paralleled with the “–” side
of inputs or outputs.
NOTE: Follow all local codes and
regulations covering electrical wiring. It
is recommended that conduit be used for
wiring runs.
2.3.1 Aux/Non-sync2 Inputs
If the installation of AUX/Non-sync 2 leaves any inputs unterminated,
these should be shorted with links across + & – inputs.