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Description
The Prisma II 1.2 GHz HD-LRMW and HQT Transmitters are plug-in
modules for the Prisma II and the Prisma II XD platforms. These modules are
part of the Prisma II optical network, an advanced transmission system
designed to optimize network architectures and increase reliability,
scalability, and cost effectiveness.
The transmitters install into a Prisma II XD Chassis directly, or into a
standard Prisma II Chassis by means of a host module that accepts up to two
Prisma II High Density application modules.
The transmitters are designed to operate over a wide range of loss budgets
and digital signal loads. Microprocessor control allows ease of installation
and flexibility of application.
The transmitter design includes an array of capabilities, such as low RF input
level, broadcast, and elective Automatic Gain Control (AGC).
Features
The high density transmitter has the following features:
Front panel green light emitting diode (LED) to indicate operating status
¾
Front panel red LED to indicate alarm status
¾
-20 dB test point
¾
Optical output connector
¾
Plug-and-play capability
¾
Compatible with Intelligent Communications Interface Module (ICIM) and Local
¾
Craft Interface (LCI) software
Blind-mate radio frequency (RF) connections
¾
Operation
The transmitter receives an RF signal through a connector on the rear of the
module. The RF input signal is amplified and converted to an optical signal.
This module employs an Indium Phosphide-based hybrid laser/modulator
structure to both generate the optical carrier and modulate this optical carrier
with the input RF signal.
The incoming RF signal is amplified and then routed through a coupler to an
RF detector circuit. The detector circuit produces a DC voltage proportional
Description
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Troubleshooting
