Product Description; R450 Miu Programming; Rf Protocol Error Detection; Low Battery Rf Emissions - Neptune R450 User Manual

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1 Product Description

Product Description

R450 Wall and Pit MIU User's Manual

This section provides a general description of the R450 Meter Interface Unit (sub-

sequently referred to as R450 MIU or MIU).

The R450 MIU by Neptune is a compact electronic device that collects meter read-

ing data from an encoder register. It then transmits the data for collection.

The R450 MIU is easily installed and requires an Federal Communications

Commission (FCC) license to operate.

Figure 1 Wall MIU

The MIU is NOT field programmable. At the factory, each of the following items are

programmed into the MIU:

Serial numbers – Each MIU is given two unique serial numbers/identification num-

bers (two IDs for compound units). Even numbers are given to the single registers

and odd numbers are given to a two-networked registers unit. Custom serial num-

bers are not available.

The RF protocol is comprised of a header, data packet, and an error detection

mechanism that reduces the erroneous data.

The MIU stops RF transmissions when the battery discharges below the normal

operating voltage.

Figure 2 Pit MIU

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R450 miu