Dolby Laboratories 737 - Manual (Page 23)

Model 737 Soundtrack Loudness Meter - Leq(m) Cat. No. 448B Input Adapter Board
3-5
Follow these steps to install the devices used in this example:
1. Isolate the mains power to the processor and remove the existing dubbing in-
terface (Cat. No. 448); leave all connections to it in place.
2. Completely remove and discard the Cat. No. 448-MS and re-route the OPT logic
line back to the OPT tag of the Cat. No. 448.
3. Determine whether Lt/Rt default to studio record/monitor buses 2&3 or 1&3.
If Lt/Rt default to 2&3; place the links LK1-4 in the lower position. If 1&3,
place LK1-4 in the upper position.
4. Make the following connections before mounting the Cat. No. 448B (see Table
3-3 and Table 3-4 for pin conventions):
5. Mount the Cat. No. 448B to the CP65 back panel using the spacers provided
and then make the following connections:
6. Connect the Cat. No. 448B output to the Model 737.
7. Mount the dubbing interface (Cat. No. 448) on top of the Cat. No. 448B.
Cat. No. 448B CP65 CP55
From Cat. No. 150 Lt J7 pin L J12 pin 10
From Cat. No. 150 Rt J7 pin J J12 pin 7
+15 V J2 pin 5 J15 pin 5
-15 V J2 pin 13 J15 pin 13
0 V J2 pin 9 J15 pin 9
Cat. No. 448B Cat. No. 448 DS4-E (UK)
MAT logic line MAT logic line
OPT logic line OPT logic line
SR logic line SR logic line
From DA20/Mon Bus tags Balanced six-track
inputs
To DS4-E Lt/Rt tags Lt/Rt OPT OUT tags
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