Initial issue
Issue Date 25/06/2010
User Manual: 8142/8182 Transceivers
02 Technical and Functional
Page
4of 10
The processor within the transceiver runs a program stored in memory. This firmware controls all the
functions of the unit.
An underwater connector is provided in the top of the housing for connection with the interface cable.
Nominally 48V power is supplied to the unit using a single pair of conductors. Primary communications is
achieved by a half duplex RS 485 link. Diagnostics and additional data channels are provided using a
secondary half duplex RS 485 link. A signal ground is provided to make sure reliable communications for
both RS 485 channels.
Depending on the system architecture the unit can be specified to be Ethernet based and all
communications will be through the Ethernet link.
Summary of Contents for 8142-000-01
Page 100: ......