1
0
mirror of https://github.com/f4exb/sdrangel.git synced 2024-11-22 08:04:49 -05:00
sdrangel/plugins/channeltx/localsource
2020-12-13 13:04:36 +01:00
..
CMakeLists.txt sdrbase cmake: restored Boost_INCLUDE_DIRS 2020-11-05 20:41:33 +01:00
localsource.cpp AFC: implemented message pipes for sending back channel settings. Implemented in all relevant channel plugins. Removed obsolete methods 2020-12-13 13:04:36 +01:00
localsource.h AFC: implemented message pipes for sending back channel settings. Implemented in all relevant channel plugins. Removed obsolete methods 2020-12-13 13:04:36 +01:00
localsourcebaseband.cpp LocalSource: fixed DSPSignalNotification& message passing to baseband 2020-06-27 10:05:12 +02:00
localsourcebaseband.h LocalSource: fixed DSPSignalNotification& message passing to baseband 2020-06-27 10:05:12 +02:00
localsourcegui.cpp Some cleanup 2020-10-14 22:10:26 +02:00
localsourcegui.h Removed dangling PluginInstanceGUI references 2020-10-05 16:30:24 +02:00
localsourcegui.ui SampleSourceFifo refactoring and Tx code reorganization 2019-11-15 01:05:32 +01:00
localsourceplugin.cpp AFC: implemented message pipes for sending back channel settings. Implemented in all relevant channel plugins. Removed obsolete methods 2020-12-13 13:04:36 +01:00
localsourceplugin.h Channel plugins: use specialized ChannelGUI superclass. Handle GUI lifecycle in MainWindow 2020-10-04 22:16:09 +02:00
localsourcesettings.cpp Channel Tx plugins: added support of MIMO devices 2019-11-17 11:09:35 +01:00
localsourcesettings.h Channel Tx plugins: added support of MIMO devices 2019-11-17 11:09:35 +01:00
localsourcesource.cpp LocalSource: refactored Thread to Worker object moved to thread. Equivalent to FileInput changes 2020-07-12 02:54:11 +02:00
localsourcesource.h Fixed -Wunused-parameter warnings 2020-11-14 11:13:32 +01:00
localsourcewebapiadapter.cpp Fixed -Wunused-parameter warnings 2020-11-14 11:13:32 +01:00
localsourcewebapiadapter.h REST API: config: GET (13): corrected missing return in deserialize methods of the adapters 2019-08-05 03:42:04 +02:00
localsourceworker.cpp LocalSource: refactored Thread to Worker object moved to thread. Equivalent to FileInput changes 2020-07-12 02:54:11 +02:00
localsourceworker.h LocalSource: refactored Thread to Worker object moved to thread. Equivalent to FileInput changes 2020-07-12 02:54:11 +02:00
readme.md Local Output/Sink: updated documentation 2019-05-11 00:42:21 +02:00

Local source channel plugin

Introduction

This plugin draws I/Q samples from a Local Output plugin device sink in another device set into the baseband. It is basically the same as the Remote Source channel plugin but pipes the samples internally instead of receiving them over the network.

It may be used when you want to use a particular sub area of the baseband for madulation.

Note that because it uses only the channelizer half band filter chain to achieve interpolation and center frequency shift you have a limited choice on the center frequencies that may be used (similarly to the Remote Source). The available center frequencies depend on the baseband sample rate, the channel interpolation and the filter chain that is used so you have to play with these parameters to obtain a suitable center frequency and pass band.

Interface

Local source channel plugin GUI

1: Interpolation factor

The device baseband can be interpolated from the channel and its center can be selected with (5). The resulting sample rate of the I/Q stream pulled from the Local Output device sink is the baseband sample rate divided by this value. The value is displayed in (2).

2: I/Q stream sample rate

This is the sample rate in kS/s of the I/Q stream pulled from the Local Output device sink instance.

3: Half-band filters chain sequence

This string represents the sequence of half-band filters used in the interpolation. Each character represents a filter type:

  • L: lower half-band
  • H: higher half-band
  • C: centered

4: Center frequency shift

This is the shift of the channel center frequency from the device center frequency. Its value is driven by the device sample rate, the interpolation (1) and the filter chain sequence (5).

5: Half-band filter chain sequence

The slider moves the channel center frequency roughly from the lower to the higher frequency in the device baseband. The number on the right represents the filter sequence as the decimal value of a base 3 number. Each base 3 digit represents the filter type and its sequence from MSB to LSB in the filter chain:

  • 0: lower half-band
  • 1: centered
  • 2: higher half-band

6: Local Output source index

This selects the index of the Local Output device sink from which to pull the I/Q samples. The list can be refreshed with the next button (7)

7: Refresh local output devices list

Use this button to refresh the list of Local Output device sinks indexes.