Cisco ONS 15454 DWDM Reference Manual page 504

10.8.2 System Level Gain Tilt Control
Figure 10-22
SPAN
The proper Tilt Reference value is calculated by Cisco TransportPlanner and inserted in the Installation
Parameter List imported during the node turn-up process (see the "Turn Up a Node" chapter in the
Cisco ONS 15454 DWDM Procedure Guide). For both OPT-PRE and OPT-BST cards, the provisionable
Gain Tilt Reference range is between –3 dB and +3 dB.
During the ANS procedure, the Tilt value for the OPT-BST or OPT-PRE card is provisioned by the
TCC2/TCC2P card (see
OPT-PRE or OPT-BST card view (in the Provisioning > Opt. Ampli. Line > Parameters > Tilt Reference
tab).
Cisco ONS 15454 DWDM Reference Manual, R8.5
10-32
System Tilt Compensation Without an ROADM Node
= 25 dB
1
DCU
OPT-PRE OPT-PRE
G > 21dB
OPT-PRE
Unregulated Tilt
Figure 10-23). The provisioned Tilt Reference Value is reported in the CTC
SPAN = 15 dB
2
OPT-BST OPT-BST
Tilt Reference
Provisioned Tilt
Chapter 10 Network Reference
=
0
78-18343-02