1,283
edits
Changes
Jump to navigation
Jump to search
== WebGUI ==
'''2.1 I cannot store presets in the Preset tab.'''
:Please make sure you are not working in the private mode of your browser and you have enabled cookies, since the presets are stored as cookies, also see section 3.2.2 of the User Guide.
'''2.2. I cannot see any output in the WebGUI window.'''
:Please first set the SiRad Easy® up for the USB connection. For that, check if the jumper J5 on the microcontroller board is set to the U5V setting, if all jumpers are removed from the external header of the baseband board, and if the dip switch SW1 on the SiRad Easy® baseband board is set to the OFF position according to section 2.1 of the User Guide. If not, please unplug the SiRad Easy®, adjust the settings, and plug it in again.
:Also check the USB cable connection and if your device is powered properly. Then go to the ‘System Configuration’ tab and chose SER2 for the USB connection. You can also toggle the ‘Close’ and ‘Open’ button of the Com2WebSocket tool without closing the WebGUI and see if that helps.
:Lastly, you can start over, close all WebGUI / Webbrowser and Com2WebSocket windows, disconnect the SiRad Easy® and start over with connecting the SiRad Easy®, connecting the Com2WebSocket tool and connecting the WebGUI.
[[File:WebGUI connected.png|thumb|500px|left|running WebGUI]]
'''2.3 The spectrum output jumps (partly).'''
:First, if you are not using the WiFi connection, disable the WiFi module by switching the dip switch SW1 to the OFF position. Sometimes it is necessary to turn the AGC-Mode off in the ‘System Configuration’ tab and manually choose one of the 4 gains using the gain slider. Further, you can try to manually set and increase the base-frequency in 100 MHz steps to see if that stabilizes the output.
'''2.4 How does the Auto Gain Control (AGC)-Mode work?'''
:The AGC algorithm uses the first two ramps of each measurement to elaborate the highest gain setting without saturating the ADC or the baseband amplifier. In each of the two ramps the controller samples two gain stages while switching on an attenuation network during the first ramp. After that, the controller has 4 gain settings to choose from for the subsequent measurement.
'''2.5 Can I trigger the SiRad Easy® manually?'''
:Yes. Please read section 3.2.3.1 of the User Guide about the triggering options.
'''2.6 Can I use multiple SiRad Easy® Evaluation Kits in parallel?'''
:Yes. You can synchronize the Evaluation Kits using the pre-trigger feature. We suggest either driving them in different frequency ranges so they do not interfere, or you trigger them manually to measure alternately. Please read section 3.2.3.1 of the User Guide about the triggering options.
'''2.7 The LED goes off when I connect to the WebGUI.'''
:This is because the WebGUI sends a different configuration to the SiRad Easy® when it is connected. The LED will light again when the proper serial port (SER1 for WiFi connection, SER2 for USB connection) is set in the ‘System Configuration’ tab and the LED mode is changed from off to 1st target rainbow.
'''2.8 The RF Parameters tab does not show the min / max frequencies properly.'''
:You can try a manual min / max frequency scan by clicking the ‘fscan’ button three times.
'''2.9 How do I choose a base-frequency?'''
:The base frequency should be at least 100 MHz above the minimum frequency and far away from the maximum frequency. For small bandwidths, you may choose the base frequency 500 MHz or more above the minimum frequency for an improved signal quality. Please be aware, that in most countries the base frequency has to bet set between 24 GHz and 24.25 GHz or 122 GHz and 123 GHz for production purposes by law. Please check your local regulations.
'''2.10 How do I set the maximum bandwidth in the RF Parameters tab?'''
:Click the ‘max BW’ button three times to set the maximum possible bandwidth for the frontend.
'''2.11 How do I choose a bandwidth?'''
:The smaller the bandwidth, the greater will the range of the SiRad Easy® become. However, with larger bandwidths the accuracy will decrease. Please be aware, that in most countries the bandwidth is limited to 250 MHz between 24 GHz and 24.25 GHz and 1 GHz between 122 GHz and 123 GHz for production purposes by law. Please check your local regulations.
'''2.12 How can I choose the ramp time?'''
:The ramp time can only be set indirectly by adjusting the ADC clock divider and the number of samples, please read section 3.2.5 of the User Guide.
'''2.13 What is the MTI-Mode?'''
:The Moving Target Indicator mode. When activated, the SiRad Easy® displays the difference between the current measurement and the average of the previous measurements (set by ‘Average n’ slider).
'''2.14 There are too many targets. The CFAR operator does not work.'''
:You may experience that there are no targets detected by the CFAR operator although there are plenty of targets visible in the FFT output. If there are too many targets adjacent to each other in the field of view, the CFAR operator may treat those targets like noise floor and calculates an envelope around those targets. Increasing the number of guard cells may help in such a scenario.
'''2.15 How is the distance information calculated?'''
:All calculations are done on the microcontroller on the SiRad Easy®, so that the reported target distance is already in millimeters. The distance formula used is d = nBin * acc, where d is the distance to the target, nBin is the FFT bin of the target, and acc is the accuracy.
'''2.16 The update rate of the SiRad Easy® is very low. How can I improve it?'''
:The update rate is dependent on the chosen parameters in the ‘BB Processing’ tab, in particular, on the ramp time, number of samples, number of ramps, and FFT size. Further, the amount of data that has to be transferred is important. You can select the transmitted frames in the ‘System Configuration’ tab. Using only the target list output, the SiRad Easy® can reach about 50 Hz update rate.
no edit summary
:We recommend using another USB cable since some cables may operate unstable. If that does not help, please update the USB controller firmware of the Nucleo64 board as described in section 5 of the User Guide.
== Sensor Behavior & Range ==
