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Hello zhubajei,
I’m assuming you are targeting the same architecture on both PCs? If you are using Labview 32-bit on one PC and 64-bit on the other, that might be an issue. The error message you have received, “SH_API.dll not found” is a big red flag. This message has to be resolved first. It is possible the Labview configuration has changed on the tablet PC and Labview is looking for the DLL in a different location. (i.e. Different path variable, typos in your path?) My guess is that if you resolve this error, it will work as expected. If both PCs are running a full Windows 10 OS, there should not be any reason one would work and the other wouldn’t.
Regards,
A.J.Hi Rob,
Thanks for the follow up. With the 4FSK addition to the Spike software you should be able to analyze C4FM signals. My knowledge is cursory, forgive me if I am incorrect, but the C4FM spec is a 4FSK signal with 4.8k symbol rate, 1.8k deviation and root raised cosine filter. Our software is capable of measuring this signal. With our software you should be able to measure modulation fidelity, frequency offset, channel power, and ACPR. What other types of measurements are relevant to you for P25?
Regards,
A.J.Hello dwc,
The msvcp110.dll file is part of the Visual Studio 2012 redistributable files which can either be downloaded here http://www.microsoft.com/en-us/download/details.aspx?id=30679 or are part of the Visual Studio 2012 install. If you do not use Visual Studio 2012 you will still need to download these to program to the API. We have 32 and 64 bit versions of the API, so you could download both x86 and x64 versions of the redistributable for your PC. We used Visual Studio 2012 to develop the API which is why you are seeing this.
Regards,
A.J.Hi dwc,
If you decide to attempt programming the device, we have an API manual here, https://signalhound.com/sigdownloads/SA44B/SA-API-Manual.pdf. There is a code example in the appendix called “Sweep Mode” that shows you how to setup a sweep. This functionality could be performed in a loop to achieve the desired sweep. The labview examples are wrappers around the C functions, so learning the C functions would be beneficial if you decide to automate through Labview. You may contact me at aj at signalhound dot com if you have any programming related questions.
Regards,
A.J.Hi dwc,
This is a hard limitation of the device. Depending on your needs and skills, there might be ways to automate it. The device has a programming interface, if you are good with C programming and it would save you a lot of time, you could programmatically sweep the 1MHz to 10MHz span in 200kHz steps. Or, in the Spike software, you could set the frequency step to 200kHz and use the arrow keys next to the center frequency entry to quickly step through your span.
We apologize for the inconvenience.
Hello Saira,
Unfortunately this is not possible. There is no user accessible non-volatile memory on the VSG25A. The device can only be driven by our software and API. If it helps, in the software you can save presets, allowing you to quickly recover previous settings. You can also control the device in your own software by utilizing the C programming API.
Let me know if you have any further questions.
Regards,
A.J.Hi Rick,
What you are describing sounds like faulty hardware, (bad RF attenuator/RF input/etc.) Please contact us by phone at 1-800-260-TEST or email support@signalhound.com and we can discuss it further and discuss possible options for repair if we determine it is necessary.
Regards,
A.J.Hello Mike,
Can you try attenuating the input to ensure you are not in compression? Spike also sets the attenuator and pre-amp automatically based on reference level. With your ref offset active, set the reference level to +40 to see if this affects the measurement. I am concerned that the signal is possible being compressed in the Spike software.
Having said that…
I performed a similar measurement on both the Spike software and version 2.18. I was able to get similar results on both pieces of software. I have attached the measurements. In this case, I used a signal generator to create a wideband signal with an output power of -40dBm. Seeing a channel power output reading of -40dBm on both software versions lets me know I have configured the software correctly. If you have a generator, can you try a similar test?
Regards,
A.J.Hi Mike,
For the Spike software, to get comparable measurements, ensure video units are set to power, detector is set to average, and disable spur reject in the settings file menu. With these settings, you should see similar readings. For a wide band signal like this, ultimately, you will want to compare channel power readout.
Let me know if you have follow up questions.
Regards,
A.J.Hello Phil,
It may not be desirable, but we do have an older version of our software on the SA44/SA124 downloads page. It is version 2.18 of our software. It is not Spike but an older software package. This software does not have any GPU requirements and should be able to work on your PC. It’s on this page https://signalhound.com/support/downloads/sa44b-sa124b-downloads/ under the Legacy Software section.
I apologize for the inconvenience. If this is a new device and you do not have another computer to use the device on, please contact me at aj@signalhound.com.
Regards,
A.J.Hello Phil,
Based on the image you provided, it is the case that the PC does not look to have the necessary graphics support needed to run the software. The tell-tale sign is the solid white blank screen, denoting the graphics driver was unable to render the graticule. It is still possible that updating the graphics driver will resolve the issue. I found the driver downloads page here http://support.hp.com/us-en/drivers/selfservice/Compaq-Presario-CQ60-Notebook-PC-series/3944778/model/3979078#Z7_3054ICK0KGTE30AQO5O3KA30R1
On the page, under the “Graphics-Drivers” tab, try installing the Mobile Intel 4 Series Express Chipset Family Graphics Driver. There is another graphics driver on this page, if you believe you have this GPU, you can install that one instead. If this driver does not resolve the issue, then I do not believe Spike will be able to run on this system.Let me know if this resolves the issue.
Regards,
A.J.Hello Jose,
Email me at aj@signalhound.com. I can send you a Firmware update for your SA124A so that it will be compatible with the Spike software.
Regards,
A.J.Hello Ivan,
There are no arbitrary limitations on the BB60C RBW as there are on the SA44/SA124 for the standard spectrum analysis.
Regards,
A.J.Hello Phil,
All versions of Spike should work on Windows 10. There are only some driver issues with the BB60C pre version 3.0.12. If you are not using the BB60C, then you should have no issues.
If you are running Spike and the software is immediately crashing, you may not have the proper GPU support. The Spike software requires OpenGL 2.0 support from your graphics card. If you can share more information about the PC in question, I can look and see if the PC has the ability to run our software and maybe find any drivers that may resolve this. I would need the Make and Model preferably.
Also can you take a screenshot of the software right after is crashes with the error message. You can post it in the forums here.
Hopefully we can resolve this quickly.
Regards,
A.J.Hello Jose,
I am initially unable to re-create the issue with my SA124A. Can I have you tell me what firmware version you are using and what version of Spike you are using. You can find the firmware version in the lower right hand corner of the Spike application, and the software version can be found in the Help->About menu.
If you determine you are using a version of Spike before 3.0.5, try updating to the latest version by downloading 3.0.13 here, http://www.signalhound.com/Spike.
Regards,
A.J.Hi Jyaron,
The armed message indicates a trigger was not found for the specific capture but it is still looking for the next trigger. If you were to press “Single” then the software would update until the first trigger was found and stop. We determined updating the screen with the armed message is a good way to show the user the software is still looking for a trigger without pausing the software completely.
Hey Richard,
As of right now the software limits the zero-span view to 64k samples. We have talked about removing this limitation and it may happen in a future update. This limitation only applies to viewing the signal though. The capture toolbar along the bottom can be configured to record up to 1sec of data. When you have set it up to save your capture length, pressing record saves the next triggered trace. So if you had video trigger active, it would save the next trigger event. If you had it on free run, then it would save the next trace on the screen.
I hope this helps. Let me know if you have further questions.
Regards,
A.J.