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Appendix B. S/T Bus Configurations
EXTENDED PASSIVE BUS
This bus configuration allows the connection of up to eight TEs at
ranges up to 3000 feet from the NT1 Type 400, as illustrated in Figure
B-2.
To select this mode, set switch 1-2 to the Long position. A TR must be
centrally located to the TEs. The TRs in the NT1 Type 400 are enabled
by setting switches 1-3 and 1-4 to the ON position, and switches 1-5
and 1-6 to the OFF position. These switch settings should always be
maintained, unless an external 100 Ω resistor is being used. If an exter-
nal TR is used, set switches 1-3 through 1-6 to the OFF position.
B-2
TR
Figure B-2. Extended Passive Bus Configuration
NT1 T400 User Manual
3000
FEET
160
FEET
* Is not needed if NT1Õs
TE
TE
TR
TR*
NT1
is used
61212016L1-20
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