Specifications

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Fig. 5.1: A depiction of the test platform (circuit board shown).
power ports for sensors. The switched ports supp ort 6VDC at 500mA through 15VDC at
200mA output.
5.1.3 Cost
The production cost per unit is around $150. This places the DataManager list price
around $650. This is below the required limit of $800.
5.1.4 Time
The device contains a real-time clock (RT C) with battery-backu p for unbroken time-
keeping f or longer than five years with no batteries. The system draws 3.4µA in backup
mode. With this draw and a 300mAh lithium coin cell, the device is estimated to have
backu p battery lifetime of ten years.
5.1.5 Versatility
The device supports all of the following interface options: one SDI-12 communications