User's Manual

MODEL 2130 MARKER BEACON
2-6 Rev. A April, 2005
This document contains proprietary information and such information may not be disclosed to others for any
purposes without written permission from SELEX Sistemi Integrati Inc.
Refer to Figure 2-2. The Remote Monitoring System (RMS) CCA distributes power, performs communications, provides
system interconnections via nine serial ports plus a parallel port, and facilitates monitoring/control in a single or dual
Marker Beacon system. The RMS CCA receives battery-backed DC power from the BCPS CCA at DB37 connector J1 and
directly routes it to Marker Beacon1 and Maker Beacon2 on DB25 connectors J3 and J4. These battery-backed DC power
supplies are also diode-OR’D and regulated into +3.3V, +5V, +/-12Analog, and +/-12Digital supplies for use by the RMS
CCA to power the microcontroller and all of its associated circuitry.
The U8 microcontroller utilizes external flash ROM, non-volatile RAM (NVRAM), synchronous dynamic RAM (SDRAM),
a voltage supervisor/reset circuit, and an oscillator to form the core microcomputer. The U8 microcontroller also includes
internal watchdog/reset circuitry, a direct memory access (DMA) controller, serial ports, and general purpose
input/output (I/O). Microcomputer peripherals include a real-time clock (RTC), a digital-analog (D-A) converter, an
analog-digital (A-D) converter, universal asynchronous receiver/transmitters (UARTs), a parallel port interface (PPI), and
more general purpose I/O.
The U8 microcontroller’s flash ROM is factory programmed using the J9 SPI boot header while factory debug is
accomplished using the J8 emulator header, the JP6 debug header, and the JP4 PMDT RS232 header. Test header J10 also
facilitates factory testing. None of the aforementioned connectors and headers will be used by the customer in the field.
RMS communication to the LCU CCA occurs via the parallel port J2 PPI connector. The LCU also returns system control
signals through J2 such as *TEST (lamp test) and *MRESET (master reset). Configuration switches on the RMS define
the system set-up to both the RMS and the LCU through the J2 connector.
The U8 microcontroller communicates serially through one internal and eight external UARTS. Depending on the
configuration switch set-up and header straps, the serial communications are converted to modem tip/ring, RS232, or
universal serial bus (USB) levels. Assuming the PMDT and RSCU channels are configured as tip/ring modems, their
signals are routed to the GP I/O TB2 connector and can be heard at the on-board speaker along with Ident signals from
Marker Beacon1, Marker Beacon2, Far Field Monitor1 (FFM1), and Far Field Monitor2 (FFM2). The Ident audio signals
are selected or deselected through a multiplexer.
If the PMDT is not configured as a dial-up tip/ring modem, three other options are possible. The PMDT may be
connected to USB connector J7 with header JP5 strapped for USB operation. The PMDT may also be connected to the
DB9 EXT_RMM (external remote maintenance monitor) connector J6. The third option (in factory only) has the PMDT
connected to RS232 header JP4 and header JP5 strapped for RS232 operation.
If the RCSU is not configured as a direct-connect tip/ring modem, the other option is a cell phone or radio modem
attached at DB9 connector J5.
The RMS CCA provides spare digital outputs, spare digital inputs, spare analog inputs, an external temperature sensor
input, a smoke detector input, and an intrusion sensor input on GP I/O connectors TB1 and TB2. The spare analog inputs
along with the power supplies are multiplexed to the A-D converter for monitoring.
The D-A converter is used to generate filtered test signals routed to Marker Beacon1 connector J3 and Marker Beacon2
connector J4 for operational limit testing. These test signals are also routed to the multiplexed A-D converter for RMS
self-monitoring.