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SunSDR2 PRO User Manual
© 2018 Expert Electronics
ExpertSDR2 SOFTWARE DESCRIPTION
Frequency coef f icient - Correction menu of the transceiver's frequency tuning.
Set the coefficient that the transceiver's tuning frequency would be equal to the real frequency
of the received signal.
Note:
·
Correction of the displayed frequency could be made according to the time signals on the
4.996MHz, 9.996MHz or 14.996MHz (preferably) frequencies, where you can find easily
tracked pulse signals. If they do not match with the tuned frequency, adjust the
Frequency
coefficient till the frequency match.
·
The higher the frequency of the used time signal, the higher calibration accuracy.
·
Calibration should be performed with the maximum panorama zoom and maximum FFT size
of the panorama (more detail about FFT size in
Spectrum
).
·
After you set the frequency correction coefficient, press the
Write button.
·
The devices are calibrated at the manufacturing by default, additional calibration is not
required.
Firmware Updat e - Button for manual firmware update in the transceiver.
Press the Firmware updat e button to initialize firmware update process.
DI TH - Checkbox to enable the internal noise source in the ADC.
Set the DI TH checkbox to enable internal noise source of the receiver's high-speed ADC.
Note:
·
After set/unset of the
DITH checkbox, press the
Write button
.
·
Internal noise source in the ADC gives an additional linearity to the receiver's ADC
functionality. As a rule used for lab measurements for receiver's linearity with other devices.
·
While operating in real air, noise source is an actual noise of the air, that's why there is no
need to enable
DITH function.
·
If DITH is enabled, receiver's own noise is increased.
RAND - Checkbox to enable bits randomizing on the ADC's data bus.
Set the RAND checkbox to enable bits randomizing on the receiver's ADC data bus.
Note:
·
After set/unset of the
RAND checkbox, press the
Write button.
·
Bits randomizing on the ADC's data bus leads to lessening the noise from this bus to the
receiver.
·
It is recommended to keep this checkbox on all the time.
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Summary of Contents for SunSDR2 Pro
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