4-40 888-2586-001 9/15/06
WARNING: Disconnect primary power prior to servicing.
Platinum Z16HD+
Section 4 Overall System Theory
4.8 Control System Description
The control system is a multiple micro-controller based system. It monitors over 100
operating functions in the transmitter and can make intelligent operating decisions
based on operating conditions. The system has the standard parallel remote
connections. The micro-controller system allows fast and efficient monitoring of the
entire transmitter offering a level of protection and diagnostics not available with a
simple logic controller. It also makes changes and upgrades a simple matter of changing
the firmware (software burned into an EPROM).
The Controller consists of the following boards:
• Master Controller Board
• PA Controller #1
• PA Controller #2
• PA Controller #3
• PA Controller #4
• Power Supply Controller #1
• Power Supply Controller #2
• Life Support Board
• Display/Backplane Board (motherboard)
All of these boards are located directly behind the transmitter control panel and plug
into the Display/Backplane Board. The entire assembly is considered the “System
Controller”.
The Controller functions include:
• Transmitter Control Functions
• Automatic Power Control, or APC
• VSWR Monitoring and Overload Protection
• Power Supply Monitoring and Protection
• Power Amplifier Monitoring and Protection
• Automatic power foldback for VSWR, Over-temperature and PA conditions.
• AC Restart
• System Calibration and Configuration
• Detailed Status, Metering, Configuration and Fault Diagnostics display screens
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