FABTs (5621096,562-312, and 562-531) AND BTs (562-101 AND 562-351)
FABT (562-066) AND BT (562-101)
FABT (562-312,562-531) AND BT (562-351)
s, /
\Dl-6 lN4146A
DIP
SWITCH
BAUD RATE
ADDRESS
‘JW4 MUST BE REMdVED
ON THE TRANSPONDER
ELECTRICALLY CLOSEST
TO A POWER SUPPLY
Note: The 562-096 FABT and 562-l 01 BT did not have switch package Sl . Diodes were used to set the baud
rate and address, and had to be snipped out accordingly (a missing diode would be the same as an open
switch).
The switches on both FABT and BT switch package Sl specify the transponder address and baud rate as follows:
SWITCH
BINARY WEIGHT
a
1
7
2
6
4
Note: This numbering scheme is NOT
5
a
used on the Local BT.
4
16
3 32
l&2
BAUD RATE
1
Switches 1 and 2 specify the transponder baud rate as follows:
BAUD RATE Sl-1
Sl -2
4800
CLOSED
2400
CLOSED
1200 OPEN
CLOSED
OPEN
CLOSED
Switches 3 through 6 specify the transponder address (one less than the transponder number). Then add the
binary weight of the open switches to obtain the address. For example:
FABT #l 1 would have an address of 10. Therefore, switches 5 and 7 would be OPEN.
BT #23 would have an address of 22. Therefore, switches 4,6, and 7 would be OPEN.
IMPORTANT: The transponder electrically closest to a power supply is used to report the power fail
message to the 2120 BMUX. Therefore, jumper J4 should be removed on these transponders.
23
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