FIS HDL1, Operating Manual, Page: 15 / 55

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CONNECTING TELEMETRY DEVICES
The HDL1 data logger can supply power to externally connected telemetry devices.
For proper telemetry operation, the HDL1 telemetry port must be configured
appropriately for the desired telemetry device using the Toolbox software provided by
FTS. If you are attaching your own telemetry, the telemetry connector signals and
pin-outs are given in Appendix A.
The HDL1-G5 logger comes with its internal telemetry port preconfigured for GOES
operation.
BATTERY CONNECTION
The HDL1 is designed to work with a 12 Vdc lead acid type battery. A battery must
be connected to the data logger as the logger will not operate from just a solar panel.
The HDL1 battery cable (CBL-HDL-BAT-1) is a 6 pin connection that connects to the
front panel BATTERY connector. In addition to providing the battery power
connection, the cable has an integrated temperature sensor which is used to sense
the battery temperature.
Temperature compensation is achieved by the regulator circuitry measuring the
battery voltage and the battery temperature and applying a correction of
approximately -0.03 volts per degree C. That is, for every 1 degree C that the battery
temperature rises above the 25 degree C level, the charge voltage that the regulator
switches off at is reduced by 0.03 volts.
The battery voltage can be monitored by the data logger and returned to the user
either through the attached telemetry device, the display unit or the COMPUTER
port.
Battery connector signals and pin-outs are given in Appendix A.
The HDL1 battery connection procedure is as follows:
CAUTION:
The fuse will blow if the battery is connected backwards
1. Connect the Battery cable to the battery. The red wire with the fuse
holder goes to the positive (+) side of the battery. The black wire goes
to the (-) side of the battery. The connections are made by bolting
each of the cable ring lugs to the appropriate battery terminal.
2. Mount the temperature sensor to the battery by taping it to the top of
the battery using foam tape or duct seal putty. The sensor is mounted
between the two battery posts.
3. Route the cable around behind the shelf above the battery, and plug
the 6 position connector into the HDL1 front panel BATTERY
connector.
4. Once the battery is connected properly, connect the cable from the
charging power source (typically the solar panel) to the HDL1.
5. Verify the battery connection by reading the battery voltage on the
HDL1 display.