mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-27 10:19:15 -05:00
102 lines
3.2 KiB
Markdown
102 lines
3.2 KiB
Markdown
|
<h1>Test source input plugin</h1>
|
||
|
|
|
||
|
|
<h2>Introduction</h2>
|
||
|
|
|
||
|
|
This input sample source plugin is an internal continuous wave generator that can be used to carry out test of software internals.
|
||
|
|
|
||
|
|
<h2>Build</h2>
|
||
|
|
|
||
|
|
The plugin is present in the core of the software and thus is always present in the list of sources.
|
||
|
|
|
||
|
|
<h2>Interface</h2>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h3>1: Common stream parameters</h3>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h4>1.1: Frequency</h4>
|
||
|
|
|
||
|
|
This is the center frequency of reception in kHz.
|
||
|
|
|
||
|
|
<h4>1.2: Start/Stop</h4>
|
||
|
|
|
||
|
|
Device start / stop button.
|
||
|
|
|
||
|
|
- Blue triangle icon: device is ready and can be started
|
||
|
|
- Green square icon: device is running and can be stopped
|
||
|
|
- Magenta (or pink) square icon: an error occured. In the case the device was accidentally disconnected you may click on the icon, plug back in and start again.
|
||
|
|
|
||
|
|
<h4>1.3: Record</h4>
|
||
|
|
|
||
|
|
Record baseband I/Q stream toggle button
|
||
|
|
|
||
|
|
<h4>1.4: Stream sample rate</h4>
|
||
|
|
|
||
|
|
Baseband I/Q sample rate in kS/s. This is the device to host sample rate (3) divided by the decimation factor (4).
|
||
|
|
|
||
|
|
<h3>2: Auto correction options</h3>
|
||
|
|
|
||
|
|
These buttons control the local DSP auto correction options:
|
||
|
|
|
||
|
|
- **DC**: auto remove DC component
|
||
|
|
- **IQ**: auto make I/Q balance
|
||
|
|
|
||
|
|
<h3>3: Carrier shift from center frequency</h3>
|
||
|
|
|
||
|
|
Use this control to set the offset of the carrier from the center frequency of reception.
|
||
|
|
|
||
|
|
<h3>4: Decimation factor</h3>
|
||
|
|
|
||
|
|
The I/Q stream from the generator is doensampled by a power of two before being sent to the passband. Possible values are increasing powers of two: 1 (no decimation), 2, 4, 8, 16, 32. This exercises the decimation chain.
|
||
|
|
|
||
|
|
<h3>5: Baseband center frequency position relative the center frequency</h3>
|
||
|
|
|
||
|
|
Possible values are:
|
||
|
|
|
||
|
|
- **Cen**: the decimation operation takes place around the BladeRF Rx center frequency
|
||
|
|
- **Inf**: the decimation operation takes place around the center of the lower half of the BladeRF Rx passband.
|
||
|
|
- **Sup**: the decimation operation takes place around the center of the upper half of the BladeRF Rx passband.
|
||
|
|
|
||
|
|
This exercises the decimation chain.
|
||
|
|
|
||
|
|
<h3>6: Sample rate</h3>
|
||
|
|
|
||
|
|
This controls the generator sample rate in samples per second.
|
||
|
|
|
||
|
|
<h3>7: Sample size</h3>
|
||
|
|
|
||
|
|
This is the sample size in number of bits. It corresponds to the actual sample size used by the devices supported:
|
||
|
|
|
||
|
|
- **8**: RTL-SDR, HackRF
|
||
|
|
- **12**: Airspy, BladeRF, LimeSDR, PlutoSDR, SDRplay
|
||
|
|
- **16**: Airspy HF+, FCD Pro, FCD Pro+
|
||
|
|
|
||
|
|
<h3>8: Amplitude coarse control</h3>
|
||
|
|
|
||
|
|
This slider controls the number of amplitude bits by steps of 100 bits.
|
||
|
|
|
||
|
|
<h3>9: Number of amplitude bits</h3>
|
||
|
|
|
||
|
|
This is the signal peak amplitude in number of bits
|
||
|
|
|
||
|
|
<h3>10: Amplitude fine control</h3>
|
||
|
|
|
||
|
|
This slider controls the number of amplitude bits by steps of 1 bit.
|
||
|
|
|
||
|
|
<h3>11: Signal power</h3>
|
||
|
|
|
||
|
|
This is the signal power in dB relative to the maximum power (full bit range).
|
||
|
|
|
||
|
|
<h3>12: DC bias</h3>
|
||
|
|
|
||
|
|
Use this slider to give a DC component in percentage of maximum amplitude.
|
||
|
|
|
||
|
|
<h3>13: I bias</h3>
|
||
|
|
|
||
|
|
Use this slider to give an in-phase (I) bias in percentage of maximum amplitude.
|
||
|
|
|
||
|
|
<h3>14: Q bias</h3>
|
||
|
|
|
||
|
|
Use this slider to give an quadrature-phase (Q) bias in percentage of maximum amplitude.
|