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onJ: ',.j6 UI...,. . High volumes of incoming data are handled with ease due to the short message lengths employed by the data transmitters. In less than 0.25 seconds field transmitters send a station identifier code and the raw datum. with a 0,25 second message length maximum channel capacity on a single radio frequency occurs at a network transmission rate of 172.800 reports per day The information contained in this capacity is approxinlately equivalent to 345 precipitation gages each reporting at a rate of 500 millimeters (19.7 inches) per day. Data are available instantly for the user. The event reporting capabilities of Sierra/Misco field sensors mean that up to the .minute reports are always at your finger tips no n~re waiting for lengthy interrogation cycles Convenient and easy to read displays enhance user interpretation of rapidly changing field conditions Alarms can be programed to sound when critical values are example if rainfall amounts exceed the p~ograrned amount and the video display flashes a warning message. exceeded For an alarm sounds Internal and external alarms are available. The internal alarm is used to warn operators at the base station location while an optional external alarm can be added to warn persons at a remote site . Data archiving utilities allow the user to establish a permanent long term high resolution data base, Automated analysis are possible For example forecast models are available to automatically use the REAL TIME data to estimate future conditions. Multi user and multi tasking operating systems on the base station computer allow even greater flexibility. Several users can access the data base simultaneously and additional applications programs can be executed while the ALERT program is running. D~TA BASE OPERATIONAL SPECIFICATIONS Enhanced ALERT software contains the following specifications. . * automatic data recovery formatting and filing * automatic error checking * unlimited sensor expansion capability * environmental data types precipitation water levels temperature wind speed wind direction barometric pressure relative humidity snow pack water equivalent analog sensor plus any other specified data types *' remote user conununica tions {e g. telephone}