NavCom SF-2050 Rev.G - Manual (Page 50)

SF-2050 User Guide – Rev. G
Communication Port Connectivity
Connect the supplied LEMO 7-Pin connector of the
serial cable (P/N 94-310059-3006) to COM 2 (factory
default Control Port) of the SF-2050. Connect the
DB9 end to the control device.
‡
Some devices may require an additional
adapter. The receiver is configured as a DCE
device.
‡
COM 2 is the SF-2050 logical control port by
default. COM 1 can be configured as the
control port by using the appropriate NavCom
proprietary commands or StarUtil. However,
there are caveats to Logical / Physical port
assignments.
The Control Port is a logical input/output port
and can not share the physical port with any
other logical port. The Control Port typically
handles the most data and requires baud
rates in excess of 19.2K baud, particularly in
multi-hertz measurement and navigation
applications. Though Com 1 is physically
capable of operating at 115K baud, the
throughput from the NCT-2100D to the IOP is
limited to 19.2K baud (refer to Figure 11).
Thus, the recommendation to maintain Com 2
as the Control port for multi-hertz applications.
In the Rover, the NMEA Port is an output
logical port and may share the data physical
port (non-Control) with RTCM, CMR, or NCT
RTK/UltraRTK™ input corrections. In the
Base Station, the NMEA port can not share
the data port with any RTCM, CMR, or NCT
RTK/UltraRTK™ output corrections.
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