Lucent DDM-2000 OC-3 User And Service Manual page 192

363-206-285
Issue 2, February 2000
DO ITEMS BELOW IN ORDER LISTED . . . . .FOR DETAILS, GO TO
9.
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:
If DS1 protection is required and any service DS1PM circuit
packs are installed, a DS1PM circuit pack must be installed
in the protection 8(P) slot.
NOTE:
If the group is to be equipped with any BBF3/BBF3B
DS1PM circuit packs, both service and protection MXRVO
circuit packs must be installed.
At each DS1 terminating node, set option switches and install
DS1/DS1PM circuit pack(s), as required.
DDM-2000 OC-3 M
System Turnup:
ULTIPLEXER
NTP-020
Page 4 of 8
DLP-508