Date: Tue Feb 5 17:41:21 2008

Author: Urs Lauterburg

Subject: Re: Versatile low cost USB-DAQ device for MacOSX

David et al.,

Well, that company as many others target the el cheapo market and
offer everything with dedicated software for Windows or some ActiveX
access at best . I did not see any ready made LabVIEW drivers to go
under Windoze for the low budget USB DAQ blocks. However if you
choose the one that offers serial comm you should have no problems to
program the thing from LabVIEW yourself on any given computer
platform LabVIEW lives on which is MacOSX, Windoze and Linux.

The thing with the relatively low impedance for the analog input of
the bTop-2 is not necessarily a bad thing. If you have low impedance
signals it's even better because it's less prone to noise pickup from
your cabling. High impedance inputs pick up lots of noise and ask for
short shielded cables. It's all electronics and taking proper
measurements when it really matters can be involved and expensive.

NI-hardware is made for professional applications where all these
things ought to be carefully considered and yes, it does make a
difference if you do it right or wrong.

Happy demonstrating nature


Urs Lauterburg
Physics demonstrator
Physikalische Institut
University of Bern

>Could that be used with Labview? dave
>-----Original Message-----
>From: []
>On Behalf Of Bernard Cleyet
>Sent: Monday, February 04, 2008 9:34 AM
>Subject: Re: [tap-l] Versatile low cost USB-DAQ device for MacOSX
>Mackintosh, NOT
>bc purchased their RS-232 trial kit for $50, now it's $25 and USB!
>We used it to capture EPR cavity output (magnetic field sweep).
>On 2008, Feb 04, , at 06:47, Chuck Patten wrote:
> > Another source of low-cost data modules is
>> Good stuff
>> for starters and others...
>> cheers,
>> chuck...
>> -----Original Message-----
>> From: [mailto:tap-l-
>>] On
>> Behalf Of Urs Lauterburg
>> Sent: Saturday, February 02, 2008 4:44 AM
>> To:
>> Cc:;;
>> Subject: [tap-l] Versatile low cost USB-DAQ device for MacOSX
>> Dear LabVIEWers on the Apple,
>> Not so long ago I encountered a nifty little USB-DAQ module called the
>> bTop-2 from a company named Perfectly Scientific: