fcd_source_c Class Reference
Funcube Dongle source block. More...
#include <fcd_source_c.h>
Public Member Functions | |
| virtual void | set_freq (int freq)=0 |
| Set frequency with Hz resolution. | |
| virtual void | set_freq (float freq)=0 |
| Set frequency with Hz resolution. | |
| virtual void | set_freq_khz (int freq)=0 |
| Set frequency with kHz resolution. | |
| virtual void | set_lna_gain (float gain)=0 |
| Set LNA gain. | |
| virtual void | set_mixer_gain (float gain)=0 |
| Set mixer gain. | |
| virtual void | set_freq_corr (int ppm)=0 |
| Set new frequency correction. | |
| virtual void | set_dc_corr (double _dci, double _dcq)=0 |
| Set DC offset correction. | |
| virtual void | set_iq_corr (double _gain, double _phase)=0 |
| Set IQ phase and gain balance. | |
Detailed Description
Funcube Dongle source block.
This class provides a Funcube Dongle soure block by wrapping the USB audio interface and the USB HID control interface of the Funcube Dongle into one convenient source block.
The Funcube Dongle needs to have firmware 18f or later for the control interface to work properly. As of early 2011, FCDs still come with firmware 18b. You can use qthid 2.2 (not 3) to upgrade the firmware: http://qthid.sf.net
Member Function Documentation
| virtual void fcd_source_c::set_dc_corr | ( | double | _dci, |
| double | _dcq | ||
| ) | [pure virtual] |
Set DC offset correction.
- Parameters:
-
_dci DC correction for I component (-1.0 to 1.0) _dcq DC correction for Q component (-1.0 to 1.0)
Set DC offset correction in the device. Default is 0.0.
Implemented in fcd_source_c_impl.
| virtual void fcd_source_c::set_freq | ( | float | freq | ) | [pure virtual] |
Set frequency with Hz resolution.
- Parameters:
-
freq The frequency in Hz
This is a convenience function that uses float parameter in order to allow using engineering notation in GRC.
- See also:
- set_freq_khz()
Implemented in fcd_source_c_impl.
| virtual void fcd_source_c::set_freq | ( | int | freq | ) | [pure virtual] |
Set frequency with Hz resolution.
- Parameters:
-
freq The frequency in Hz
Set the frequency of the Funcube Dongle with 1 Hz resolution applying the frequency correction set by set_freq_corr().
- See also:
- set_freq_khz()
Implemented in fcd_source_c_impl.
| virtual void fcd_source_c::set_freq_corr | ( | int | ppm | ) | [pure virtual] |
Set new frequency correction.
- Parameters:
-
ppm The new frequency correction in parts per million
Version 1.1 FCDs (S/N 810 or later) need a correction of -12 ppm. Earlier FCDs need roughly -120 ppm (default for gr-fcd).
Ref: http://www.funcubedongle.com/?p=617
Implemented in fcd_source_c_impl.
| virtual void fcd_source_c::set_freq_khz | ( | int | freq | ) | [pure virtual] |
Set frequency with kHz resolution.
- Parameters:
-
freq The frequency in kHz
Sets the frequency of the Funcube Dongle with 1 kHz resolution applying the frequency correction set by set_freq_corr().
- See also:
- set_freq()
Implemented in fcd_source_c_impl.
| virtual void fcd_source_c::set_iq_corr | ( | double | _gain, |
| double | _phase | ||
| ) | [pure virtual] |
Set IQ phase and gain balance.
- Parameters:
-
_gain The gain correction (-1.0 to 1.0) _phase The phase correction (-1.0 to 1.0)
Set IQ phase and gain balance in the device. The default values are 0.0 for phase and 1.0 for gain.
Implemented in fcd_source_c_impl.
| virtual void fcd_source_c::set_lna_gain | ( | float | gain | ) | [pure virtual] |
Set LNA gain.
- Parameters:
-
gain The new gain in dB.
Set the LNA gain in the FCD. Valid range is -5 to 30. Although the LNA gain in the FCD takes enumerated values corresponding to 2.5 dB steps, you can can call this method with any float value and it will be rounded to the nearest valid value.
By default the LNA gain is set to 20 dB and this is a good value for most cases. In noisy areas you may try to reduce the gain.
Implemented in fcd_source_c_impl.
| virtual void fcd_source_c::set_mixer_gain | ( | float | gain | ) | [pure virtual] |
Set mixer gain.
- Parameters:
-
gain The new gain in dB.
Set the mixer gain in the FCD. Valid values are +4 and +12 dB.
By default the mixer gain is set to +12 dB and this is a good value for most cases. In noisy areas you may try to reduce the gain.
Implemented in fcd_source_c_impl.
The documentation for this class was generated from the following file:
