Updated documentation

2026-07-24 11:04:10 -04:00 · 2017-05-19 10:52:18 +02:00
parent bf9ce302f3
commit e946242fae
22 changed files with 29 additions and 71 deletions
@@ -62,9 +62,7 @@ This controls the optional XB-200 add-on when it is fitted to the BladeRF main b

 This is the BladeRF device ADC sample rate in S/s.

-Use the wheels to adjust the sample rate. Pressing shift simultanoeusly 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. 
+Use the wheels to adjust the sample rate. 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 arroews. Pressing shift simultanoeusly moves digit by 5 and pressing control moves it by 2.

 <h3>5: Decimation factor</h3>

@@ -65,9 +65,7 @@ Use this checkbox to toggle the extra low noise amplifier (LNA). This gives an a

 This is the HackRF device ADC sample rate in S/s.

-Use the wheels to adjust the sample rate. Pressing shift simultanoeusly 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.   
+Use the wheels to adjust the sample rate. 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 arroews. Pressing shift simultanoeusly moves digit by 5 and pressing control moves it by 2.

 <h3>7: Rx filter bandwidth</h3>

@@ -73,7 +73,9 @@ USe this push button to reset the NCO frequency to 0 and thus center on the main

 <h3>5: Center frequency with NCO engaged</h3>

-This is the center frequency of the mix of LO and NCO combined and is the source passband center frequency when the NCO is engaged. Use the thumbwheels to adjust frequency as done with the LO (1.1). Pressing shift simultanoeusly moves digit by 5 and pressing control moves it by 2. The boundaries are dynamically calculated from the LO center frequency and sample rate.
+This is the center frequency of the mix of LO and NCO combined and is the source passband center frequency when the NCO is engaged. Use the thumbwheels to adjust frequency as done with the LO (1.1). Pressing shift simultanoeusly moves digit by 5 and pressing control moves it by 2. The boundaries are dynamically calculated from the LO center frequency, sample rate and hardware decimation factor.
+
+&#9758; In the LMS7002M TSP block the NCO sits before the decimator (see Fig.14 of the [datasheet](http://www.limemicro.com/wp-content/uploads/2015/09/LMS7002M-Data-Sheet-v2.8.0.pdf) p.7) so it runs at the actual ADC rate. Hence the NCO limits are calculated as +/- half the device to host sample rate multiplied by the hardware decimation factor. For example with a 4 MS/s device to host sample rate (10) and a hadrware decimation of 16 (8) you have +/- 32 MHz span around the LO for the NCO. In this example you can tune all HF frequencies with the center frequency set at its lowest (30 MHz). 

 <h3>6-7: Auto correction options</h3>

@@ -96,9 +98,7 @@ The I/Q stream from the LimeSDR is doensampled by a power of two by software ins

 This is the LMS7002M device to/from host stream sample rate in S/s.

-Use the wheels to adjust the sample rate. Pressing shift simultanoeusly 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. 
+Use the wheels to adjust the sample rate. Pressing shift simultanoeusly 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 arroews.

 The LMS7002M uses the same clock for both the ADCs and DACs therefore this sample rate affects all of the 2x2 MIMO channels.

@@ -66,9 +66,7 @@ When button is off the sample rate can vary from 950 kS/s to 2400 kS/s

 This is the device sample rate in samples per second (S/s).

-Use the wheels to adjust the sample rate. Pressing shift simultanoeusly 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.
+Use the wheels to adjust the sample rate. 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 arroews. Pressing shift simultanoeusly moves digit by 5 and pressing control moves it by 2.

 <h3>7: Decimation factor</h3>