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Thanks for the heads up jyaron
September 8, 2015 at 9:30 am in reply to: How to change from "Measuring Receiver" to "FM Modulation Analysys" Hello zhubajei,
The sa_api version 3.# does not have direct functions for calculating the values you are looking for. We calculate the values directly in the Spike application from the I/Q data received from the saGetIQ functions. I do not believe the two APIs can be used in conjunction.
Calculating these values might be very easy in Labview with the built in functionality.
You will need to collect data with the saGetIQ functions,
then FM demodulate the data. Once you have the FM data, you can perform the necessary statistics on the data, such as averaging the FM array and finding the peaks.You can see our implementation here
https://github.com/SignalHound/BBApp/blob/master/BBApp/src/model/demod_settings.cpp
In the IQSweep::Demod function, you can see how we demodulate to FM. Then in the IQSweep::CalculateReceiverStats function, between lines 337 – 379, you can see our main FM calculations.We do our calculations on about 1/4 second of contiguous data.
Regards,
A.J.Hi Jyaron,
We do not provide any utilities for such a task. Our SA series devices would be responsive to powering down a USB port but the BB series devices would not. For all purposes, our devices are considered to be always on when connected via USB.
By the way, did the USB drivers resolve the issues you were experiencing?
Regards,
A.J.Hello jyaron,
Based on the description of the issue, it sounds like it could be a USB 3.0 issue. A number of our customers with Dell PCs are able to use the BB60C after updating to the latest USB 3.0 drivers.
Here is the latest USB 3.0 driver from Intel for your hardware configuration.
https://downloadcenter.intel.com/download/22824/USB-3-0-Driver-Intel-USB-3-0-eXtensible-Host-Controller-Driver-for-Intel-8-9-Series-and-C220-C610-Chipset-FamilyLet me know if installing this resolves this issue. Ensure the BB60C is disconnected when updating, and it will require a PC restart.
Hopefully we can resolve this quickly.
Edit: Additionally, if you have any heavy duty anti-virus software running, you might try disabling it. Software like Norton or MacAfee have given us grief in the past.
Regards,
A.J.Hello Hans,
We have not started development on this yet, and we don’t have a time frame for any of this, but the types of functionality we have discussed here are log frequency sweeps, quasi-peak detectors, 6dB bandwidth filters, more support for correction tables, spectrum masks, and numerous other requests from customers.
This is what we would like to see in the future. When and what actually gets developed is still to be determined.
Regards,
A.J. August 25, 2015 at 9:26 am in reply to: Spike 3012- Win8.1- Opengl32.dll error- Program Immediately Crashes upon opening Hello Ron,
I apologize for the inconvenience.
Will you try installing one more video driver for the onboard video?
Here is the Dell driver page for your PC. http://www.dell.com/support/home/us/en/04/product-support/product/optiplex-9020-desktop/drivers
Under the video tab, the second driver is for the Intel HD 4600 Graphics driver. Try installing this driver and then running the software with your monitor connected to the onboard video again.
Let me know if this changes anything.
Regards,
A.J. August 20, 2015 at 11:03 am in reply to: Spike 3012- Win8.1- Opengl32.dll error- Program Immediately Crashes upon opening Hi Ron,
Both your integrated GPU and dedicated GPU are more than capable of running our software. Because the error is happening in the OpenGL DLL, it still looks like a graphics issue. At this point I’m not entirely certain the best course of action. There are a couple ideas I have.
You could try to install the latest drivers for your dedicated card direct from AMD, I found the one for your card and OS here http://support.amd.com/en-us/download/desktop?os=Windows%208.1%20-%2064
Feel free to go through the process of finding the driver on the AMD site to ensure I linked the right one.Do you have any backed up updates through the Windows update utility? It might be worth fully updating just in case.
It would be interesting to see what would happen if you disable/pullout the dedicated card and just use the integrated graphics. If the integrated card works then we have narrowed the problem down to incompatibility with the dedicated GPU.
This is the first time I have seen a capable PC fail in this way.
Additionally, can you send a screen shot of the software as it crashes? Does the UI even appear before crashing? A tell-tale sign of graphics incompatibility is when the center of the application is blank or filled with junk, otherwise, in a normal application, you would see the rendered graticule (grid).
Regards,
A.J. August 20, 2015 at 8:53 am in reply to: Spike display lost after using an extended display on Windows 10 Hi Alex,
Try using the Windows+Left, Windows+Right keys to re-position the window. Whatever windows has focus can be moved around this way. You will have to find a way to ensure the Spike window has focus, you could probably select it with the alt-tab method.
Or… Check this link out as well, I think this applies to you
http://www.howtogeek.com/howto/windows/bring-misplaced-off-screen-windows-back-to-your-desktop-keyboard-trick/If these do not work, read on, otherwise ignore the rest of this message.
What I think this comes down to, is that Spike remembers where it was last placed, and with your multi-monitor setup it is re-opening in a place that no longer exists or is off screen. You can force Spike to re-open in the middle again with a small amount of work.
Navigate to this directory
C:/Users/YourName/AppData/Roaming/SignalHound/
AppData is a hidden folder, you will need to show hidden folders.
In this folder you should see a file called Layout.ini, you can either delete this file, or edit it in notepad and remove all the info under the [MainWindow] and save the file. The Geometry value is what is storing your window size and location. Launching the application with that deleted should restore the defaults which is centered and full screen on the main display. (If the other screen is still what Windows considers the main display, it will probably still open on the other window).Regards,
A.J. August 20, 2015 at 8:32 am in reply to: Issue with SA44 + TG44 scalar network analyzer on low frequencies Hello Ivan,
The 20dB store through is just being used internally to calibrate high gain measurements. You will not see the effect you mentioned. It will only affect measurements below -45dB.
Regards,
A.J. August 19, 2015 at 6:20 pm in reply to: Spike 3012- Win8.1- Opengl32.dll error- Program Immediately Crashes upon opening Hi RonTer,
This error makes me think the PC you are using does not have sufficient graphics capabilities. The Spike software requires OpenGL 2.0 support from your GPU, which sometimes is not available on tablets or netbooks, or maybe even a PC that is >5 years old.
Email me at aj@signalhound.com or reply here. Let me know your PC model, be as specific as you can. If you want, in the device manager, find your CPU and graphics card. Let me know what you see. Sometimes updating a graphics driver can resolve the issue.
Regards,
A.J. August 19, 2015 at 9:38 am in reply to: Issue with SA44 + TG44 scalar network analyzer on low frequencies Hello Ivan,
Thanks for the heads up. I was able to quickly find the issue with the low frequency network analyzer sweeps. I am planning on releasing an update to the software within the next couple weeks. I can have this fix included. Is this adequate for you?
Regarding your other question, the 20dB store through enables more accurate measurements below -45 dB. Without the 20dB store through, we can only calibrate 0 -> -45dB. Check out the user manual, section 4.4 for more information.
https://signalhound.com/sigdownloads/Spike/Spike-User-Manual.pdfRegards,
A.J.Hello Khatana,
Here at Signal Hound we use C++ almost exclusively so we do not have very much experience with C# or any of its available libraries. We do all of the plotting ourselves for our applications.
The best way to find plotting libraries for C# would be to use a search engine. There are likely many free C# graph/plotting libraries available, you will just have to find them.
Regards,
A.J.Hi JuiceKing,
Thank you for pointing this out. We were unaware of this issue. This is because the harmonic viewer is using a 200kHz span for each patch and at 100kHz center frequency, the previous harmonic is visible in each step. I can look into resolving this for a future update. A viable alternative for now would be to utilize the step entry, and use the arrow keys to step to each harmonic. I apologize for the inconvenience.
Regards,
A.J.Hello JuiceKing,
See our SA44B hardware manual.
https://signalhound.com/sigdownloads/SA44B/SA44B-User-Manual.pdf
This information is in section 3.1.1 but I realize now there are better places to put this information. I will add this information to the RBW limitations for the future.Regards,
A.J.Hello Ivan,
Thank you very much for the feedback. These are very good suggestions. We log all customer requests and implement them as we have time. Regarding point #2, in the lower left corner of the graticule you will see an uncalibrated message when the store through is not active. I realize this is not as convenient as a pressed button, but still serves a similar purpose and will hopefully help you determine when you need to perform another store-thru. Thank you again.
Regards,
A.J.Hi Andy,
In Spike version 3.0.11 we released the ability to drag the active marker around with the mouse. This will hopefully make some of your measurements easier until we implement the full -ndB markers. It is still on our list of feature requests.
Regards,
A.J.Hey Mike,
OK, so the functionality is purely aesthetic? Basically just so you can visualize the channels easier. It is an interesting idea and I could see the usefulness in it. Thank you for the suggestion. I do keep track of all users suggestions.
Regards,
A.J.Yes, it is just a basic limit line.
On the topic of custom mask utilities, are there any implementations you have used on other equipment you like that you can point me to? Maybe you can describe the type of functionality you expect from a custom mask utility? I can’t guarantee that we would build it but I always like collecting ideas from customers.
Regards,
A.J.Does it always show passed?
What version of Spike did you download, see the Help -> About menu.
So I just gave you an example file, you will need to populate it with values for the channels you are interested in, following the same format. See attached image for what I am seeing.A.J.