Maximum Packet Length

Hi All,

Before “Add to cart” the VSG25A, I would like to verify one thing.
I have to generate a 2.4 GHz, Bandwith less than 1 MHz, burst packet from IQ points (matlab, csv, R&s, … I have all extension abilities).
My concern is the maximum packet length that the VSG25A can generate.
Assume my sampling rate in 2 Msps, with the on board 2K samples IQ memory, does it mean that my maximum Packet Length is 1ms ?

Is there a way to trigger this from an external trigger ?
I would like to generate a 30 ms packet length: how is it possible ?

Thanks,

Nicolas

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.

A.J.,

Thanks for your answer. Perhaps later on at SignalHound the “VSG25B” without this limitation ?

Nicolas

Hello Nicolas,

Yes, larger pattern memory is one of the top priorities if/when we create a new signal generator.

Regards,
A.J.

Just curious, is there a new signal generator coming soon with a larger pattern memory and/or external trigger?

Hello setu_mohta,

There is currently no plans to offer a signal generator with these features.

Regards,
Andrew

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