System information

© 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID Kirkpatrick 092509
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S-QAM FS TX Operation
 The RF input signal is amplified before being converted to an optical
signal using a high-performance, isolated distributed feedback (DFB)
laser.
 The incoming RF signal is also routed through a coupler to an RF detector
circuit. The RF detector produces a DC voltage proportional to incident RF
power that is used to monitor the input power level.
Voltage
Controlled
Attenuator
Predistortion
DFB
Laser
Front Panel
RF
Test Point
Microprocessor
Optical Output
RF
Input
ICIM
Front Panel
(optional module )
LCI User
Interface
Connector
(on chassis)
TP352