Controlfreak
Newbie
Joined: 20 May 2007
Posts: 1
Location: New Zealand
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 Posted: Mon May 21, 2007 12:37 am Post subject: Frequency measurement with ADC11/10 |
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We just bought a measurement system utilising an USB ADC11/10 to measure the actual frequency of a 2V squarewave (34...100Hz). The required update rate of the measured frequency value is 100ms => Sampling Interval 100ms.
The contents of the plw.ini file:
-------------------------------------------------
[General]
FirstTime=No
[Window]
Recorder=0,1,-1,-1,-1,-1,310,745,298,567
QuickSampleMs=100
-------------------------------------------------
I run WinXP Professional (continuously updated to latest SP, patches etc.) on a laptop, with PicoLog 5.15.6.
Whenever I set the sampling interval to < 1s, PicoLog records only some flickering frequency value between .90 and 1.21Hz, but not the correct values.
I tried also PicoLog 5.16.2, with the same result.
The supplier of the system says, that they were able to run the system with the specified 100ms sample interval.
I know that other people had similar problems a while ago
[http://www.picotech.com/support/about3289.html].
Can anybody help me?
Thanks
| Description: |
| This is the data file with the 100ms sample interval. It does not work with the 100ms setting, but it works with a 1000ms setting. |
|
Download |
| Filename: |
Frequency070521.PLW |
| Filesize: |
19.65 KB |
| Downloaded: |
66 Time(s) |
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