Harris Maxiva ULX User Manual

4-22 888-2629-200 10/6/10
WARNING: Disconnect primary power prior to servicing.
Section 4 Theory of Operation
Maxiva ULX COFDM Series
4.4.4 CPLD (Complex Programmable Logic Device)
Each PA (power amplifier) module contains a CPLD (Complex Programmable Logic
Device) device. The CPLD is not a microprocessor but is a pre-programmed discrete
logic device and therefore very stable and reliable. The CPLD’s in the PA modules are
responsible for reporting faults back the TCU and also for taking action when the ON/
STBY command is issued by the TCU.
4.4.5 Life Support Functions
Life Support functions are active when the main control system, controlled by the PCM
in the main TCU, is not functioning properly. Life support functions are controlled by
the MCM card in the main TCU.
Table 4-10 Life Support Functionality
System Function Description Available in
Life Support
Mode
TX On Transmitter ON command via front panel or parallel
remote interface.
YES
TX Off Transmitter OFF command via front panel or by
parallel remote interface.
YES
Power Raise Transmitter power raise command via front panel or by
parallel remote interface.
YES
Power Lower Transmitter power lower command via front panel or by
parallel remote interface.
YES
Manual Exciter A/B
Select
Exciter selection via front panel or by parallel remote
interface.
YES
Automatic Exciter
Switch over
Automatic exciter switch over of exciters if in AUTO. YES
Manual Driver A/B
Select
Driver selection via front panel or by parallel remote
interface.
YES
Automatic Driver
Switch over
Automatic driver switch over of Drivers if in Auto. YES
Manual PA ON/OFF PA modules can be turned on and off via circuit breaker
inside rear of transmitter.
YES

Harris Maxiva ULX Specifications

General

Brand	Harris
Model	Maxiva ULX
Category	Transmitter
Language	English