5442B Driver questions

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FarSouth
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5442B Driver questions

Post by FarSouth »

Hi,
I just purchased a 5442B Picoscope.
I ported the driver example ps5000aInterface.h/c to a c++ class using Qt.
I'm writing a general purpose data acquisition app, initially for ultrasonics research.
While waiting for the 5442B to arrive I wrote a signal simulator similar to the Picoscope app, so I could develop my Qt gui.
When the 5442B arrived took just a couple of hours to get it working.
Thanks Pico for the unambiguous driver docs!

In one application I want to use a maximum of 2 channels, and was hoping to power the 5442B with a single USB port.
I use openDevice(handle*,resolution), which returns PICO_POWER_SUPPLY_NOT_CONNECTED as expected.
I then call handleDevice(UNIT *) which in turn calls
changePowerSource(unit->handle, PICO_POWER_SUPPLY_NOT_CONNECTED, unit);

That returns PICO_FPGA_FAIL.

Is it possible to run a 5442B on a single USB port with just one or two channels enabled?

John.

Martyn
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Location: St. Neots

Re: 5442B Driver questions

Post by Martyn »

Yes it should be possible to run with 2 channels on a USB2 port, with most PC's and Laptops although a few may have issues if they stick to the 500mA spec.

If you contact support @picotwch.com we can look at this in more detail.
Martyn
Technical Support Manager

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