help me get my hp 54645D working with Signal Express

[NoAlias_Really]

I can't get my HP 54645D to display anything close to what the o-scope displays using Signal Express.  The o-scope shows a square wave, and Signal Express displays part of a sinsuoid.

It makes not sense

[Nick_F1]

Hi NoAlias_Really,

Thank you for posting on the National Instruments forums.
One thing to check is that the acquisition in Signal Express is correct.  You will want to make sure that the sampling rate is atleast twice the speed of the signal you are reading.  I would actually recommend it being 10 times to get a good representation of your signal. 

If this doesn't work, please let me know and we can look into other reasons why Signal Express is behaving this way.