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Timebase problem 5444B

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Timebase problem 5444B

Postby StuW » Fri Oct 24, 2014 2:16 pm

I've started writing a labview (2013) program for a 5444B, but I'm stuck with understanding the timebase.

Using PS5000 block, the lowest timebase I can use is 2 - i.e. 250MS/s. I've disabled channels B,C and D using PS5000 settings, but an error is still thrown up if I reduce timebase to less than 2. To me it looks as if the Block and RapidBlock functions can't be informed that channels have been disabled and assume 4 channels are in use - anything I'm missing here?

Thanks in advance.
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Re: Timebase problem 5444B

Postby Martyn » Fri Oct 24, 2014 4:59 pm

What resolution are you using?
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Re: Timebase problem 5444B

Postby StuW » Mon Oct 27, 2014 9:21 am

Good question.

I'm using the PS5000 functions Open, Settings and Rapid. I can't see any options for setting the resolution in these functions, and haven't therefore explicitly set the resolution.

I assumed the default resolution was 8-bit, but if it wasn't it would explain the lower allowed maximum timebase which appears to be 500MS/s.
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Re: Timebase problem 5444B

Postby Karunen » Mon Oct 27, 2014 11:48 am

Hi,

Which version of the SDK did you download?
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Re: Timebase problem 5444B

Postby StuW » Mon Oct 27, 2014 1:28 pm

The SDK version is PS5000asdk_r10_5_0_32
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Re: Timebase problem 5444B

Postby Karunen » Wed Oct 29, 2014 11:45 am

Hi,

Looking at the PS5000asdk_r10_5_0_32 PicoScope5000aExampleBlock.vi I was able to set the timebase to 0. (Please look at image below)

PS5000a Res.png
PS5000asdk_r10_5_0_32 PicoScope5000aExampleBlock.vi


The screen shot shows block mode with a timebase of 0 and the resolution circled on the left.

If you set the resolution to 8 bit can you set a timebase of 0?

Kind Regards,
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