363-206-305 System Turnup:
NTP-004
Issue 3, June 2000 Page 3 of 6
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
DO ITEMS BELOW IN ORDER LISTED . . . . FOR DETAILS, GO TO
DLP-508
5.
NOTE:
Standard DS1 transmitter sources are designed to terminate
in a nominal 100-ohm impedance. This termination is usually
provided by the receiving equipment. When not connected
to receiving equipment (that is, idle or unterminated), DS1
transmitter equipment should terminate in a 100-ohm load.
When connecting through DSX equipment, this can be
accomplished with terminating plugs available from the DSX
manufacturer. Any alternative method may be used resulting
in 100-ohms across the TIP and RING of the DS1 circuit
output while in an idle state. Failure to terminate DS1
outputs may result in violation of FCC Part 15 emission
requirements and possibly interfere with other electronic
equipment. Also, AIS should be turned off (using the
set-t1:address:ais=no command) on any DS1 circuit
that is not in service.
NOTE:
For the 1X1 protection configuration, circuit packs are
protected on a one-to-one basis. For example, if protection
is required for a DS1 circuit pack in a service LS-[A-1, B-1,
C-1, or D-1] slot, a DS1 circuit pack must be installed in the
protection LS-[A-2, B-2, C-2, or D-2] slot. If BBF3 DS1PM
circuit packs are installed in service slots, then a BBF3
DS1PM circuit pack must be installed in the protection slot if
protection is required.
NOTE:
For the 1X7 protection configuration, the circuit pack type
installed in the LS-D-2 slot is the only circuit pack type that is
protected. In a 1X7 protection configuration, 177A
Apparatus Blank cards are required in unequipped
LOW-SPEED slots.
At each DS1 terminating node, set option switches and install
DS1/DS1PM circuit pack(s), as required.
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