Nortel Networks 1000 - Manual (Page 882)

882 NTBK50 2.0 Mb PRI card
NTBK50 enables the shield of the Tx and/or Rx pairs of the carrier to be
selectively grounded. Closing (down position) the on-board switch applies
FGND to the appropriate carrier cable shield. The switch settings are
shown in
Table 379 "Carrier Shield grounding switch settings" (page 882) .
Carrier Shield grounding (Switch SW4)
Table 377 "Carrier Shield grounding switch settings" (page 882) lists the
Carrier Shield ground switch settings.
Table 377
Carrier Shield grounding switch settings
Switch Down (On) Up (Off)
SW 4 – 1 Rx – FGND Rx – OPEN
SW 4 – 2 Tx – FGND Tx – OPEN
Note: The usual method is to ground the outer conductor of the receive
coax signal.
Settings are shown in the Table below.
Table 378
Carrier shield grounding switch settings
Switch Down (On) Up (Off)
SW 4-1 Rx—FGND Rx—OPEN
SW 4-2 Tx—FGND Tx—OPEN
Note: The usual method is to ground the outer conductor of the receive
coax signal.
Table 379 "Carrier Shield grounding switch settings" (page 882) lists the
Carrier Shield ground switch settings.
Table 379
Carrier Shield grounding switch settings
Switch Down (On) Up (Off)
SW 4 – 1 Rx – FGND Rx – OPEN
SW 4 – 2 Tx – FGND Tx – OPEN
Note: The usual method is to ground the outer conductor of the receive
coax signal.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
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