high pass bode diagram with lv example

[deuchi]

Hello guys, i've been getting around with labview for this past month and I have a question about http://www.ni.com/example/52076/en/ this example. 

So I have to make the bode diagram for my high-pass filter with a cutt-off at 0.1Hz.. I can't make the frequency axsis start at 0.01 (I've tried modifying the coefficient of exp but that can't seem to be the problem because I get a perfect bode diagram with my low-pass filter.. so any ideas? 

Thanks in advance for your help

[deuchi]

Hello guys, i've been getting around with labview for this past month and I have a question about http://www.ni.com/example/52076/en/ this example. 

So I have to make the bode diagram for my high-pass filter with a cutt-off at 0.1Hz.. I can't make the frequency axsis start at 0.01 (I've tried modifying the coefficient of exp but that can't seem to be the problem because I get a perfect bode diagram with my low-pass filter.. so any ideas? 

Thanks in advance for your help

[Alexander_Sobolev · Accepted solution]

Low frequency limit is determined by acquisition time. Try to increase that constant that determines it via detected frequency.

[deuchi]

I don't have the aquisition time here.. here is my bode diagram.. shouldn't it normally start at its cut-off frequency?