Search found 6 matches

by Yang
Thu Jun 21, 2012 4:16 pm
Forum: LabVIEW
Topic: Problems for controllable output for 5204
Replies: 11
Views: 11302

Re: Problems for controllable output for 5204

Hi,Martyn; I still cannot get the same phase shift value in Labview as it is in Picoscope although I set the initial condition is 0. I assume the different result may be caused by different unit in picoscope 6 and Labview. The x-axis in picoscope is the information of time where unit is second, the ...
by Yang
Fri Jun 08, 2012 4:48 pm
Forum: LabVIEW
Topic: Problems for controllable output for 5204
Replies: 11
Views: 11302

Re: Problems for controllable output for 5204

Yes. I made a mistake. Thanks for letting me know. Now I use integral (x).vi. However, the result is not as picoscope where the external components are all the same. For example, the output is 1v Peak to Peak and 10kHz; in picoscope, the delta phase is about 16 degree and the value in my vi is 35 de...
by Yang
Wed Jun 06, 2012 3:23 pm
Forum: LabVIEW
Topic: Problems for controllable output for 5204
Replies: 11
Views: 11302

Re: Problems for controllable output for 5204

Hi Martyn; You are unbelievable. Thank you very much. Could you tell me how`s the equation getting? The equation can work in Pico 6. However, in labview the result from the equation is just 0 or 180. Kind of confused. The equation I typed into Labview is as following: acos(int(A*B)/(sqrt(int(A*A))*s...
by Yang
Thu May 31, 2012 4:13 pm
Forum: LabVIEW
Topic: Problems for controllable output for 5204
Replies: 11
Views: 11302

Re: Problems for controllable output for 5204

Hi Martyn; Now my VI can make a controllable output and sample. Thanks for your helps. Because the frequency I use to test is almost 500 KHz, the capacitance (15pF) of the input channel will affect the data sampled. Now I want to measure the delta phase between the output (which is generated by prog...
by Yang
Tue May 15, 2012 11:34 am
Forum: LabVIEW
Topic: Problems for controllable output for 5204
Replies: 11
Views: 11302

Re: Problems for controllable output for 5204

Thank you for answering me.
And I still have a question, how to make it controllable. I hope if there is a feedback in program the output of picoscope can be controllable, as the amplitude can be reduced and frequency can be added.
Any suggestions will appreciated.
by Yang
Thu May 10, 2012 11:08 am
Forum: LabVIEW
Topic: Problems for controllable output for 5204
Replies: 11
Views: 11302

Problems for controllable output for 5204

Hi there I tried to use LABVIEW to develop a controllable output program. I faced, however, some problems: ps5000SetSigGenBuiltIn For "waveType", I cannot type "PS5000_SINE" as I can do it in C. If I use the "string convert into number", it cannot be done because "PS" is not number. The type of "wav...