C-Nav7050 User Guide
Revision 0
Page 11 of 27
10/30/2020
Section 2
– Principles of Operation
This section provides guidance on how the C-Nav7050 works. A block diagram
of the C-Nav7050 is shown in Figure 2
) and a description of each
component in the C-Nav7050.
Figure 2: C-Nav7050 Block Diagram
UHF Radio Modules
Each UHF radio module is pre-programmed with the list of current Petrobras
frequencies; a port on the back panel enables these frequencies to be updated.
The Channel (frequency) used by the radio is set by a combined display/switch
on the front panel. This can be set to a specific channel or requested to scan the
available channels for data. Data reception is indicated by turning the display
background from red to green. A manual front panel selection switch determines
which of the two UHF data output will be used. Note that this can be set to an
inactive channel and this will still be the sampled channel even if data is present
on the other receiver.
