FIS HDL1, Operating Manual

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INTRODUCTION
HDL1-G5
DATALOGGER
GOES ANTENNA GND SDI
RAIN SDI
GPS ANTENNA
MAIN
MENU
SOLAR PANEL
BATTERY SDI
SDI
COMPUTER
DATALOGGER
TELEMETRY
GND SDI
RAIN SDI
MAIN
MENU
HDL1
BATTERY
SOLAR PANEL
SDI
SDI
COMPUTER
Figure 1. HDL1 & HDL1-G5 Front Panels
The HDL1 and HDL1-G5 are robust, weatherproof programmable data loggers that
support a variety of sensors. Both style data loggers come with an integrated
display, an integrated temperature compensated battery charge regulator, and a front
panel COMPUTER connector (DB9 com port) for standard PC communications.
Many telemetry options (such as telephone, satellite, or radio) are available for
external connection to the HDL1 whereas the HDL1-G5 has a built-in high data rate
GOES transmitter. See Appendix A for the detailed specifications on the data logger.
POWER
Power for the data logger is provided by a 12 Vdc sealed lead acid battery connected
to the front panel BATTERY connector. A battery must be connected to the data
logger as the logger will not operate with just a solar panel connected.
With the connection of a solar panel to the data logger front panel SOLAR PANEL
connector, integrated HDL1 power management circuitry provides a method of
regulating and maintaining the most optimal battery charge condition ensuring that
the battery is as fully charged as possible.
A temperature compensated regulator circuit inside the data logger controls Battery
charging. By measuring the battery voltage and temperature the regulator circuitry is
able to apply power from the solar panel to the battery when recharging is required.
In order to ensure the longest possible data logger operation the regulator circuitry is
designed to minimize current draw and so conserves the energy in the battery.