3 2.5 2.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL INSIDE CHAPTER 2 General Information 2-3 Power Distribution Unit 2-7 System Power Supply 2-8 Power Distribution Block 2-9 2-10 Alarm Current Monitor 2-11 Temperature Sensors 2-12 Distribution Data Collection Module 2-13 Transmitter Maintenance Panel 2-14 Transmitter I/O Panel 2-15 Transmitter Supplemental - Dual Port Power Sensor 2-17 CHAPTER 2 BASE TRANSMITTER (MAGNETRON) Magnetron Blower Assembly ISO 9001:2000 Base Transmitter (Ma
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL GENERAL INFORMATION The base transmitter 1A1, is the foundation for the radar system and foundation consists of the necessary power distribution, cooling, system control, and various other modules that provide the transmitter with the necessary items for proper operation. The base transmitter is not frequency or power determinate, rather the base transmitter provides the infrastructure to other modules. For more detail, reference schematic book Volume 3.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL CHAPTER 2 BASE TRANSMITTER (MAGNETRON) GENERAL INFORMATION ISO 9001:2000 Base Transmitter (Magnetron) 2-4 PROPRIETARY ENTERPRISE ELECTRONICS CORPORATION
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL GENERAL INFORMATION CHAPTER 2 BASE TRANSMITTER (MAGNETRON) Temperature Sensor Temperature Sensor ISO 9001:2000 Base Transmitter (Magnetron) 2-5 PROPRIETARY ENTERPRISE ELECTRONICS CORPORATION
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL CHAPTER 2 BASE TRANSMITTER (MAGNETRON) GENERAL INFORMATION ISO 9001:2000 Base Transmitter (Magnetron) 2-6 PROPRIETARY ENTERPRISE ELECTRONICS CORPORATION
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL The power distribution module accepts the incoming Mains AC from the transmitter IO panel, and provides a convenient central point of distribution. The module also contains filtering circuitry to reduce EMI. This module accepts standard IEC-C13 and C19 plugs.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL SYSTEM POWER SUPPLY The system power supply is a +24VDC 120W supply capable of providing the source for the base transmitter unit. This supply is a high efficiency switching supply with LED indication of Voltage and current for ease of maintenance. The supply is DIN rail mounted and has covers protecting the AC Mains input and DC output.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL This DIN rail distribution buss is comprised of 6 individual modules connected by a common buss. This distributes both +24VDC and Ground. The terminals are recessed to minimize the risk of short circuit due to foreign debris. All the contacts are properly coated to reduce the risk of corrosion, and to operate without vibration, which could cause individual contacts to loosen.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL MAGNETRON BLOWER ASSEMBLY Blower Current Motor Hose The Magnetron blower assembly is the typical cooling system for the Magnetron tube. Pictured above is the assembly with the hose and end-bell for use with the EEC Magnetron tubes. Each Magnetron tube type uses a different hose and end-bell arrangement but is similar to the one pictured. A screen shroud is placed over the blower inlet to keep an object from striking the spinning rotor.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL Pictured above is the Alarm current sensor and alarm circuit board mounted on the Magnetron Blower Assembly. This module monitors the Magnetron blower for proper operation via current flow. If the current drops below a pre-set limit due to either motor failure or other faults, the alarm circuit initiates a controlled shutdown of the transmitter thus preventing damage of critical components. There are no adjustments or other periodic maintenance required.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL The temperature sensors used in the base transmitter unit are precision semi-conductor temperature to Voltage converters. Additional circuitry is provided to compensate for cable length and to eliminate pulse noise. Both temperature sensors are fed to the DDC module and the information is used both for BITE data and for transmitter monitoring .
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL DISTRIBUTED DATA COLLECTION MODULE I/O Ports RS232 Ethernet The Distributed Data Collection (DDC) module is an Ethernet, CAN, or serial RS232 controlled device that collects both analog and digital data, as well as controls relays. It outputs TTL signals under processor control. For general information please refer to EEC Publication DDC-ICD and Users manual. For further information refer to the Personality Addendum in the DDC Users Manual.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL TRANSMITTER MAINTENANCE PANEL Two different options for the transmitter maintenance panel exist; one incorporates a pedestal intercom function, and the other doesn't. Both configurations will be shown in this document. Please refer to the FAMILY TREE for your specific unit. • Operate Time Meter – Provides visual display of the hours of operation of the base transmitter unit.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL TRANSMITTER MAINTENANCE PANEL The optional pedestal intercom incorporates all the functions described above, and adds a headphone jack, push to alert button, a sonic alert device, and RF sample ports for forward and reverse power.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL TRANSMITTER I/O PANEL The transmitter I/O panel is the main interface point between the base transmitter, the external communication network, and pedestal equipment. For full details concerning the signal characteristics of the interface panel, please refer to EEC Publication BASE TRANSMITTER I/O ICD. The various connectors provided perform the following functions.
ISSUE/REVISION DATE: 12 March 2007 TECHNICAL MANUAL TRANSMITTER SUPPLEMENTAL The Dual Port Power Sensor provides a real time analysis of the transmitted pulse and reverse power. Measuring both forward and reflected power from the waveguide assembly bi-directional coupler allows for indication of the transmitted pulse and the reflected energy. Since reflected energy is also comprised of weather information, the reverse energy is only measured during the transmitted pulse width.
