Figure 6: Topside Telemetry PCB mounted on Adapter
Topside Telemetry Board
Overview
The Topside Telemetry PCB, illustrated in Error! Reference source not
found. and the Topside Data Coupling Board, illustrated in Error! Reference
source not found., provide the telemetry link with the Subsea Telemetry PCB
located in the Subsea Electronics Pod and the Subsea Data Coupler PCB
located in the Subsea Transformer Pod.
The telemetry system gives a transparent, full-duplex serial link between the
Topside PC and the Subsea Microcontroller capable of transferring data at
19200 baud. The digital information is superimposed on the high-voltage CPT
supply by means of frequency-shift keying (FSK). The Topside Telemetry
Board transmits using a different carrier frequency than the Subsea Telemetry
Board (1.00MHz and 1.37MHz, respectively), so that the data reception circuit
is able to decode valid subsea messages while filtering out its own
transmissions.
To Next Page
Loading...