Nortel Networks 1000 - Manual (Page 839)

Architecture 839
Impedance matching
The line interface provides for the use of either 75 ohms coaxial or 120
ohms twisted pair cable. The impedance is selected by a switch, as shown
in
Table 355 "Impedance matching switch selection" (page 839) .
Table 355
Impedance matching switch selection
Cable On Off
75 ohms S2 S1
120 ohms S1 S2
Note: The ON position for all the switches is towards the bottom of the
card. This is indicated by a white dot printed on the board next to the
bottom left corner of each individual switch.
The line interface provides for the use of either 75ohm coaxial or 120ohm
twisted pair cable. The impedance is selected by a switch, as shown in the
settings table below.
Table 356
Impedance matching switch selection
Cable On Off
75 Ohm S2 S1
120 Ohm S1 S2
Note: The ON position for all the switches is towards the bottom of the
card. This is indicated by a white dot printed on the board adjacent to
the bottom left corner of each individual switch.
The line interface provides for the use of either 75 ohms coaxial or 120
ohms twisted pair cable. The impedance is selected by a switch, as shown
in
Table 357 "Impedance matching switch selection" (page 839) .
Table 357
Impedance matching switch selection
Cable On Off
75 ohms S2 S1
120 ohms S1 S2
Note: The ON position for all the switches is towards the bottom of the
card. This is indicated by a white dot printed on the board next to the
bottom left corner of each individual switch.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.