ADS Environmental Services RainAlert II QR 775008 A2 - Manual (Page 17)

System Overview 2-5
 Transmitting the stored and current data to the user's PC
 Initiating event and alarm notification
The DSP allocates portions of memory to firmware (permanently
stored software) and data storage. A seven-segment (SS) light-
emitting diode (LED) located on the board indicates the current
monitor communication and operational activity. The DSP also
includes the monitor clock, random access memory (RAM), and
Flash. The monitor uses RAM while taking readings and
processing the rain data. The RAM then downloads the data to
Flash, or non-volatile memory, which also stores the monitor
firmware and configuration information. Flash ensures the monitor
maintains the data during battery pack replacement or a power
failure.
Digital Counter
The digital counter on the board records the number of tips
processed through contact closures from the tipping bucket. The
DSP requests the cumulative number of tips from the counter,
calculates the number of tips that have occurred since the last
reading, and stores the data in the monitor memory.
Communications
The communications element of the board provides multi-
tasking/handling of all communications processes. It interfaces with
a wireless or a land-line modem (based on the model of RainAlert
II), as well as manages local serial communication requests. The
communications component is also responsible for gathering real-
time information from the other components on the board.
Voltage Regulator
The voltage regulator regulates and distributes power from the
battery pack to the analog, communications, and DSP components
on the board.