ADTRAN 203019L1 - Manual (Page 26)

10 NT1 ACE User Manual 61203019L1-1
NT1 ACE User Manual
Extended Passive Bus Configuration
This configuration allows you to connect up to eight TEs at
greater ranges than the Short Passive Bus. This group of TEs
can be located at up to 3000 feet from the NT1, as shown in
Figure 6. To select the Extended Passive Bus configuration,
the CONFIGURATION switch must be set to the LONG
position. A termination resistor must be centrally located to
the TEs. If the TEs have internal terminating resistors that
can be optioned, only one TE’s terminating resistor should
be enabled. The TERMINATION switch should be placed
in the 100 position, and only one of the TEs connected
should be terminated with 100 ohm. These switch settings
should always be maintained, unless an external 100 ohm
resistor is being used. If an external termination resistor is
installed, set the TERMINATION switch to the NONE posi-
tion.
Figure 6. Extended Passive Bus Configuration
TR TR NT1
TE TE
3,000 Feet
*
* Not needed if NT1's
Termination Resistors
(TR ) are used.
160 Feet