These settings are used for satellite modes and analysis, and give the operator the possibility to configure receiver or down-converter frequencies, and to select a satellite and receiver type. The receiver or down-converter control interface to be controlled is connected to a serial port of the computer. Receiver center frequency is preconfigured to 1542 MHz for the L-Band settings and 3544.5 MHz for the C-Band settings.
The GUI displays a number of input fields:
Ø Ocean Region. Select the ocean region satellite pointed to by the monitoring antenna.
Ø Oscillator Frequency. Set this parameter to the frequency of the local oscillator used, or set it to 0 if an external converter or mixer is not used.
Ø Frequency Offset. Find out how accurately the receiver sets its frequency. Use the real-time FFT item in the Analysis DIRECT menu and select a bandwidth of 24 kHz to find out the frequency offset of the receiver. Adjust the receiver to the NCSC frequency of the appropriate ocean region. Following this, the NCSC signal should be centered exactly in the FFT display. The adjustment applied to centre the NCSC signal is the offset (make it accurate to 500 Hz or less).
Ø L Band and C-Band Center Frequency. Exact value of the L or C-band frequency that is converted to 70.000 MHz.