Dolby Laboratories SDU4 - Manual (Page 11)

2-4
2.3.1 External Facilities Connector (J503)
+24V
DC GROUND
CHASSIS GROUND
SURROUND MONITOR
RIGHT MONITOR
CENTER MONITOR
LEFT MONITOR
MONO
STEREO
DOLBY SURROUND
LEFT TOTAL MONITOR
RIGHT TOTAL MONITOR
REMOTE FADER TOP
REMOTE FADER WIPER
DC GROUND
20
+15V
19
16
15
18
J503
FEMALE D-CONNECTOR
17
23
7
21
10
9
11
3
4
5
6
12
13
24
2
1
25
14
-15V
22
8
Figure 2.4 J503 connections
Connector J503 provides fixed level (500mV for Dolby level) monitoring points
for Lt and Rt and for L,C,R and S signals, and various remote control functions;
see Figure 2.4. For optimum immunity to radio-frequency interference all
cables connecting to J503 should be shielded with the shields connected to the
metal cover of the D-connector, not to pin 13 or 1.
2.4 Set-Up Options
To change any of these options (except surround delay), remove the front panel
(2 screws on top and 5 underneath) and the top cover (2 screws each side). All
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