PlutoSDR: updated documentation

plugins/samplesink/limesdroutput/readme.md

@@ -158,7 +158,7 @@ Use this toggle button to switch the sample rate input next (10) between host to
 
 This is the LMS7002M device to/from host stream sample rate or baseband sample rate in samples per second (S/s). The control (10A) is used to switch between the two input modes. The device to/from host stream sample rate is the same for the Rx and Tx systems.
 
-The limits are adjusted automatically. In baseband input mode the limits are driven by the interpolation factor (9). You may need to increase this interpolation factor to be able to reach lower values.
+The limits are adjusted automatically. In baseband input mode the limits are driven by the software interpolation factor (9). You may need to increase this interpolation factor to be able to reach lower values.
 
 This is the LMS7002M device to/from host stream sample rate in S/s. It is the same for the Rx and Tx systems.
 

plugins/samplesink/plutosdroutput/readme.md

@@ -51,9 +51,11 @@ Device start / stop button.
 
 This is the sample rate at which the DAC runs in kS/s (k) or MS/s (M) after hardware interpolation. Hardware interpolation is only partially controlled by the user using the FIR interpolation factor (9). The value here is the value returned by the device interface therefore it is always exact.
 
-<h4>1.4: Stream sample rate</h4>
+<h3>1.4: Stream sample rate</h3>
 
-Baseband I/Q sample rate in kS/s. This is the host to device sample rate (5) divided by the software interpolation factor (3). 
+In host to device sample rate input mode (5A) this is the baseband I/Q sample rate in kS/s. This is the host to device sample rate (5) divided by the software interpolation factor (3).
+
+In baseband sample rate input mode (5A) this is the host to device sample rate in kS/s. This is the baseband sample rate (5) multiplied by the software interpolation factor (3)
 
 <h3>2: LO ppm correction</h3>
 
@@ -97,9 +99,18 @@ The I/Q stream to the PlutoSDR is upsampled by a power of two by software inside
 
 The AD9363 has many port options however as only the A output is connected you should leave it as the default. This is a provision for people who want to hack the board. The different values may be found in the AD9363 documentation.
 
-<h3>5: Host to device stream sample rate</h3>
+<h3>5A: Host to device sample rate / Baseband sample rate input toggle</h3>
 
-This is the AD9363 device to/from host stream sample rate in S/s. It is the same for the Rx and Tx systems.
+Use this toggle button to switch the sample rate input next (5) between host to device sample rate and baseband sample rate input. The button shows the current mode:
+
+  - **SR**: host to device sample rate input mode. The baseband sample rate (1.4) is the host to device sample rate (5) divided by the software interpolation factor (3).
+  - **BB**: baseband sample rate input mode. The host to device sample rate (1.4) is the baseband sample rate (5) multiplied by the software interpolation factor (3).
+
+<h3>5: Sample rate</h3>
+
+This is the device to/from host stream sample rate or baseband sample rate in samples per second (S/s). The control (5A) is used to switch between the two input modes. The device to/from host stream sample rate is the same for the Rx and Tx systems.
+
+The limits are adjusted automatically. In baseband input mode the limits are driven by the software interpolation factor (3). You may need to increase this interpolation factor to be able to reach lower values.
 
 Use the wheels to adjust the sample rate. Pressing shift simultaneously moves digit by 5 and pressing control moves it by 2. Left click on a digit sets the cursor position at this digit. Right click on a digit sets all digits on the right to zero. This effectively floors value at the digit position. Wheels are moved with the mousewheel while pointing at the wheel or by selecting the wheel with the left mouse click and using the keyboard arrows.
 

plugins/samplesource/plutosdrinput/readme.md

@@ -57,7 +57,9 @@ This is the sample rate at which the ADC runs in kS/s (k) or MS/s (M) before har
 
 <h4>1.5: Stream sample rate</h4>
 
-Baseband I/Q sample rate in kS/s. This is the device to host sample rate (8) divided by the software decimation factor (5). 
+In device to host sample rate input mode (8A) this is the baseband I/Q sample rate in kS/s. This is the device to host sample rate (8) divided by the software decimation factor (5).
+
+In baseband sample rate input mode (8A) this is the device to host sample rate in kS/s. This is the baseband sample rate (8) multiplied by the software decimation factor (5)
 
 <h3>2: LO ppm correction</h3>
 
@@ -121,9 +123,18 @@ With SR as the sample rate before decimation Fc is calculated as:
 
 The AD9363 has many port options however as only the A balanced input is connected you should leave it as the default. This is a provision for people who want to hack the board. The different values may be found in the AD9363 documentation.
 
-<h3>8: Device to host stream sample rate</h3>
+<h3>8A: Device to host sample rate / Baseband sample rate input toggle</h3>
 
-This is the AD9363 device to/from host stream sample rate in S/s. It is the same for the Rx and Tx systems.
+Use this toggle button to switch the sample rate input next (8) between device to host sample rate and baseband sample rate input. The button shows the current mode:
+
+  - **SR**: device sample rate input mode. The baseband sample rate (1.5) is the device to host sample rate (8) divided by the software decimation factor (5).
+  - **BB**: baseband sample rate input mode. The device sample rate (1.5) is the baseband sample rate (8) multiplied by the software decimation factor (5).
+
+<h3>6: Sample rate</h3>
+
+This is the device to host sample rate or baseband sample rate in samples per second (S/s). The control (8A) is used to switch between the two input modes.
+
+The limits are adjusted automatically. In baseband input mode the limits are driven by the software decimation factor (5). You may need to increase this decimation factor to be able to reach lower values.
 
 Use the wheels to adjust the sample rate. Pressing shift simultaneously moves digit by 5 and pressing control moves it by 2. Left click on a digit sets the cursor position at this digit. Right click on a digit sets all digits on the right to zero. This effectively floors value at the digit position. Wheels are moved with the mousewheel while pointing at the wheel or by selecting the wheel with the left mouse click and using the keyboard arrows.