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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.
Hey Mike,
I apologize, try file contents like this instead.
904.0, -250, -60
905.0, -250, -60
905.0, -250, -40
907.0, -250, -40
907.0, -250, -60
908.0, -250, -60This specifies a minimum as well for each frequency. This displays correctly for me. It appears the two value line is not being parsed properly. This should resolve the issue and allow you to use limit lines.
Let me know your results.
Regards,
A.J.Hey Mike,
You could load a custom limit line which would in effect create a mask. Create a file in a text editor or in excel like so
904.0, -60
905.0, -60
905.0, -40
907.0, -40
907.0, -60
908.0, -60(The format is [MHz, dBm] on each line)
and name it MyFileName.csv. Then in the software, File->Import->LimitLines and find and select your file.
If you create a list of points that outline the channels you are interested in observing, the software will create a max value limit line that will be drawn over the graticle. It would also let you know when a signal exceeds the limit line as well.
Is this type of functionality what you are looking for?
Regards,
A.J.Hi Mike,
The SA44 and SA124 only have an analysis bandwidth of 250kHz which limits you to symbol rates of ~150kS/s or less (most signals). Our software sets the device bandwidth to 2*samplerate when looking at a signal. This does limit you to certain signals for the SA44/SA124. Our BB60C spectrum analyzer has an analysis bandwidth of 27MHz, and is much better suited for wideband signal measurements.
I hope this helps.
Regards,
A.J.Mike,
Thank you for clarifying, I read that incorrectly. That is a good idea, and I think we contemplated sending out a mass email at one time, not sure if we ever committed to it.
Regards,
A.J.Hello Thomas,
The TG44 does not need the SA to generate calibrated outputs.
Regards,
A.J.Hello MikeH,
As of Spike version 3.0.10, the software now tells you when there is a new version available and provides a link to the download page. You will see the notification on the right hand side of the status bar (lower right). For this to work, your PC must be connected to the internet on program startup.
I think a Spike sub-forum would be a good idea.
Regards,
A.J.Hello Nealmartini,
Is your start frequency is below 16MHz by chance? There is a limitation on RBW of 6.5kHz if the start frequency of the sweep is below 16MHz.
Regards,
A.J.Hi Mike,
You can find the user manual online here
https://signalhound.com/sigdownloads/Spike/Spike-User-Manual.pdf
or in the installation directory at
C:/Program Files/Signal Hound/Spike/ManualsRegards,
A.J.Hello Nealmartini,
Can you tell me the device information listed in the lower right hand corner of the Spike application? The information I need is the model number, serial number and firmware version. There are two potential model numbers, the SA44 (no ‘B’) and SA44B.
Regards,
A.J.Hello Nicolas,
Yes, larger pattern memory is one of the top priorities if/when we create a new signal generator.
Regards,
A.J.Hello Nicolas,
You are correct, the maximum packet length would be 1ms for the parameters you listed. This is a limitation of the 2k sample pattern memory. There is no way circumvent this or work around this to create a larger contiguous pattern.
It is also not possible to externally trigger the pattern. The VSG25A cycles through the buffer continuously. If you are creating your own custom file, you have the ability to specify a period up to 64k samples. With the period parameter, you can tell the device how long to wait before cycling over the pattern memory again.
Regards,
A.J.Hello John,
At the moment there is not a way to undock the Sweep/Measurement dialogs. This is a good suggestion though. I will look into whether this could be possible in the future.
Regards,
A.J.Hello Thomas,
The TG44 can be used as a standalone generator. There is an application called TGStandalone in the Spike application installation directory which allows you to set the frequency and amplitude of the generator.
Regards,
A.J.Hello Adrian,
dBm/Hz = dBm – 10*log10(RBW)
The document you linked then shows you how to convert dBm/Hz to nV/Hz.
Our device input is 50 Ohm, which is used in the document.Thank you for the LABVIEW example! We will take a look at it.
Regards
Hello Guoan,
You can use the BB_DIRECT_RF flag in this manner,
bbInitiate(handle, BB_STREAMING, BB_DIRECT_RF);In this mode you will receive 80MS/s 16-bit direct RF samples. In the frequency domain, you will measure frequencies from 0Hz to 40MHz, but there is a low pass filter that is roughly around 27MHz. The LO conversion stages are bypassed in this mode, resulting in exceptional RF performance. The samples are full scale.
Regards,
A.J.