BBV TX1500 system - BBUS Example Wiring

TX1500 Manual V3.5 Dec 07 Page 7 of 40 TX1500 MATRIX
SYSTEM BBUS WIRING EXAMPLES
The following diagrams show examples of various wiring schemes.
Fig 7. Example with all keyboards daisy chained from the TX1500 matrix using a single BBUS leg.
Fig 8. Example with all keyboards daisy chained from the TX1500 matrix using two BBUS legs.
Fig 9. Use of a STARCARD to allow star wiring of keyboards.
12345678
ON
12 3456 78
ON
12 3456 78
ON
12345678
ON
Keyboard 1
BBUS Termination OFF
PROGRAM Enabled
Keyboard 2
BBUS Termination OFF
PROGRAM Disabled
Keyboard 3
BBUS Termination OFF
PROGRAM Enabled
Keyboard 4
BBUS Termination ON
PROGRAM Enabled
BBUS maximum distance 1200M
123456 78
ON
Matrix SW2
BBUS Termination ON
12345678
ON
12 3456 78
ON
12 3456 78
ON
Keyboard 1
BBUS Termination ON
PROGRAM Enabled
Keyboard 2
BBUS Termination OFF
PROGRAM Disabled
Keyboard 3
BBUS Termination OFF
PROGRAM Enabled
Keyboard 4
BBUS Termination ON
PROGRAM Enabled
BBUS maximum distance 1200M
12 3456 78
ON
12 3456 78
ON
Matrix SW2
BBUS Termination OFF
123456 78
ON
12 3456 78
ON
12 3456 78
ON
Keyboard 1
BBUS Termination ON
PROGRAM Enabled
Keyboard 2
BBUS Termination ON
PROGRAM Disabled
Keyboard 3
BBUS Termination ON
PROGRAM Enabled
Keyboard 4
BBUS Termination ON
PROGRAM Enabled
STARCARD to KEYBOARD maximum distance 1200M
12 3456 78
ON
12 3456 78
ON
Matrix SW2
BBUS Termination ON
5/RB -> 3
2/TRB -> 5
3/TRA -> 4
5 4 3 2 1
4/RA -> 6
STARCARD
KEYBOARD