Nortel Meridian 1 Option 11C Manual page 15

Switch S4—Carrier Shield Grounding
This switch allows for the selective shield grounding of the Tx and/or Rx
pairs of the carrier cable. Closing the switch (down position) applies Frame
Ground (FGND) to the coaxial carrier cable shield, creating a 75¾
unbalanced configuration. The Tx and Rx pairs are referenced with respect to
the 2.0 Mb DTI card (i.e. Rx is carrier received from the far end device).
Table 4
Switch S4
Switch
S4-1
S4-2
Note: The usual method is to ground the outer conductor of the receive
coax signal.
Insert the NTAK10
Slide the circuit card into any unused slot 1 through 9 in the main cabinet, or
in slots 11-19, 21-29, 31-39, 41-49 of the first, second, third, and fourth IP
xpansion cabinets, respectively. Secure the circuit card in the cabinet by
locking the lock latch assemblies.
Connect the cables
• In the cabling area, located directly below the card cage, remove the
retaining bar used to secure the MDF cables. Connect the
NTBK05DA/CA interface cable to the 50-pin Amphenol connector
below the card slot holding the NTAK10 2.0 Mb DTI circuit card.
Re-install the retaining bar to secure the cable(s) in place.
• Terminate the NTBK05DA/CA carrier cable as required.
2.0 Mb DTI Implementation
Off (Up)
Receive Shield
Unconnected
Transmit Shield
Unconnected
Page 15 of 126
On (Down)
Frame Ground on
Receive Shield
Frame Ground on
Transmit Shield
Option 11C 2.0 Mb DTI/PRI