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PicoScope 4262 resolution

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PicoScope 4262 resolution

Postby egonotto » Sat Mar 11, 2017 4:40 pm

Hi,

it seems than the resolution of my 4262 is only 14 bit.

As example in 20V range the least difference seem 2.5mV.
This is only 14 bit.

In the C console from the SDK the ADC values from block mode are also multiple of 4. This looks like 14 bit.

Only if you take stream mode it seems you got the whole 16 bit.

Sincerly
egonotto
Attachments
block.txt
Output from C console
(96.76 KiB) Downloaded 15 times
4262_resolution.jpg
zoom
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Re: PicoScope 4262 resolution

Postby Martyn » Mon Mar 13, 2017 7:40 am

I have tried with a unit here and get around 610uV per step on the 20V range, which is correct.

Can you post the details from Help->About , and also the psdata file for this capture, we can then check some details.
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Re: PicoScope 4262 resolution

Postby egonotto » Mon Mar 13, 2017 10:06 am

Hello Martyn,

here is the about:
"
PicoScope® 6 - PC Oscilloscope software version: 6.11.12.1692
Copyright © 1995-2016, Pico Technology Ltd.

Model: PicoScope 4262
Serial Number: CS559/059
USB Version: 2,0
Calibration Date: Montag, 3. November 2014
Hardware Version: 1
Driver Version: 1.2.6.4
Firmware Version: 1.0.5.0 / 1.1.4.0
"
And 2 psdata files. One in streaming mode and the other not in streaming mode.

Best regards
egonotto
Attachments
streaming_mode.psdata
streaming mode
(67.54 KiB) Downloaded 14 times
only_14_bit.psdata
non streaming mode
(49.76 KiB) Downloaded 15 times
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Re: PicoScope 4262 resolution

Postby Martyn » Mon Mar 13, 2017 12:55 pm

There is an error in the driver version you are using. If you download and install the current release of the software PicoScope 6.12.7 you should see the full 16 bits.
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Re: PicoScope 4262 resolution

Postby egonotto » Tue Mar 14, 2017 3:55 pm

Hello Martyn,

thanks, with the new
PicoScope® 6 - PC Oscilloscope software version: 6.12.7.2687
I got the 16 bit.

Nice that the programm works with VISTA 64.

But with the SDK I have still only 14 bit.
Exists there new driver for the SDK?
Copy the new dll-files over the old files from the SDK does not work.

Best regards
egonotto
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Re: PicoScope 4262 resolution

Postby Martyn » Fri Mar 17, 2017 1:35 pm

If you email in to support@picotech.com and ask for the 64bit versions of ps4000.dll and picoipp.dll that match the current PicoScope build, we can get those sent out to you.
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