Status LED: Bi-state LED
illuminates green when the
module is functioning properly,
or red during alarm or power up
Select LED: Yellow-colored LED
illuminates when the module is
selected through the front panel
Download
Connector
RF Monitor:
Monitor point
for RF signal
at the transmitter
RF In: Female F
connector
Optical Out
Chapter 1 Overview
Description
© 2009 Harmonic Inc.
9
SPL 7110-Exx, Version 1.0, Rev A
Figure 1-1: SPL 7110-Exx front and rear panel features
Transmitter performance is optimized by combining state-of-the-art 1550 DWDM distributed
feedback (DFB) laser technology and patent pending, pre-distortion linearization circuitry.
Harmonic has designed the SUPRALink family for integration into networks with advanced
element management systems; each transmitter module employs a microprocessor-based
communication and monitoring architecture. Figure 1-2 is a block diagram of the SPL 7110-
Exx transmitter.
The transmitter’s microprocessor continuously monitors and controls all critical transmitter
parameters in order to optimize performance over both time and temperature changes. The
microprocessor-controlled parameters include:
■
Input signal attenuation pad
■
Laser power, temperature, and bias
■
Electrical circuit temperature and setpoints