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System
Cable Pin
Number
Signal Name
Termination
3
SPDIF+
Ring, RCA Jack, Yellow
7
DGND/SHIELD
Ring, RCA Jack, Yellow (connected to SPDIF+)
8
LEFT MINUS (-)
Ring, RCA Jack, White
9
LEFT PLUS(+)
Pin, RCA Jack, White
10
RIGHT MINUS (-)
Ring, RCA Jack, Red
11
SPDIF MINUS (-)
Pin, RCA Jack, Yellow
12
RIGHT PLUS(+)
Pin, RCA Jack, Red
13
SMART SPEAKER DB-9 connector pins 2, 3
DP-9 connector pins 1, 4, 6, and 8 tied together
Bass Module Test Cable Construction
Parts Required:
1 - 321 Series II system cable, Bose
®
part number 269997-001
1 - Female RCA jack, red center, Radio Shack part number 274-337
1 - Female RCA jack, white center, included in Radio Shack part number 274-337
1 - Female RCA jack, yellow center
1 - Female 9 pin DB-9 D-sub connector, Radio Shack part number 276-1538
1 - Plastic project box, Radio Shack part number 270-1803
1 - DB-9 male to DB-9 female cable (null modem cable), Radio Shack part number 26-117
Procedure:
1.
Cut the system cable so that you have one section about 4 feet long and another about 6 feet
long. Retain both pieces. You will build the console test cable from the 4 foot section later.
2.
Drill holes in the plastic project box to mount your RCA and DB-9 connectors. Refer to the
drawing below.
3.
Using a DMM to verify proper wiring, connect the 6 foot section of the system cable’s wires to
the left and right analog audio input jacks, the digital SPDIF audio jack and the DB-9 D-sub
connector. Refer to the cable connector pinout diagram and the bass module test cable wiring
table below.
Note:
You will use the DB-9 male to DB-9 female cable (null modem cable) to connect this test
cable to your PC. This will allow you to control the bass module by sending Smart Speaker
commands from your PC. Refer to the test procedures for the tests and associated commands.
Note:
Be sure to label the connectors on your test cable box so that there is no chance of using
the wrong connector for a test.
Left Analog Input
Right Analog Input
SPDIF input
9 pin D-sub
connector
Plastic Project Box
System Cable
FACE OF CONNECTOR
1
2
3
4
5
6
7
8
9
10
11
12
13
Bass Module Test Cable Wiring Information
Содержание 3-2-1 SERIES II
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