Installation manual

Dolby
®
Model CP650 Installation Manual Back Panel Connectors
B-3
The optional Cat. No. 778 card has four pairs of AES inputs, the first of which
provides a single digital bitstream input (Dolby Digital), or up to eight channels of
digital PCM audio input. The card provides eight channels of digital audio outputs
while supporting the Dolby Digital Surround EX audio format. With this card
installed, all output channel level trims default to 127 to allow for the proper gain
structure. The analog outputs of the CP650 are muted when a Cat. No. 778 card is
installed. All audio outputs are digital.
Table B–3 Option Card I/O Connector Pinout with Cat. No. 778 Installed
Pin Digital Signal I/O with Cat. No. 778 Installed
1 AES1 (L/R) In +
2 AES1 (L/R) In –
This digital input pair can receive either PCM or
Dolby Digital bitstreams. The remaining AES
pairs receive PCM only.
3 AES3 (Ls/Rs) In +
4 AES2 (C/Sw) In +
5 AES4 (Bsl/Bsr) In +
6 X1/2 In+
7 AES1 (L/R) OUT +
8 AES3 (Ls/Rs) OUT +
9 Chassis Gnd
10 X1/2 OUT +
11 Chassis Gnd
12 AES2 (C/SW) In –
13 AES3 (Ls/Rs) In –
14 Chassis Gnd
15 AES1 (L/R) OUT –
16 AES3 (Ls/Rs) OUT –
17 X1/2 Out -
18 Chassis Gnd
19 X1/2 In -
20 AES4 (Bsl/Bsr) In -
21 AES4 (Bsl/Bsr) Out -
22 AES4 (Bsl/Bsr) Out +
23 AES2 (C/SW) Out –
24 AES2 (C/SW) Out +
25 Chassis Gnd
Hearing-Impaired (H/I) Output Connector
The Hearing-Impaired output is an unbalanced signal output. The connector used is a
female RCA-type phono connector.