Yes, a DMM that does fast data logging to a PC would work fine for those
that already have one.
It does not make such a great universal solution for most.
Anything under a hundred US dollars is worth considering.
What I'm looking for is a 16 bit, bipolar, solution to upgrade
a small, obsolete, DataQ, RS-232, serial, product that uses the 12 bit ADC
of a two dollar Pic micro.
ws
From Marvin E. Gozum marvin.gozum at jefferson.edu
You can easily do with commercial DMM [ e.g. HP 34401a]
in the 4.5+ digit range, but what's the working budget?
At 12:57 PM 12/13/2010, WarrenS wrote:
Would work nice, IF there is a universally accepted sound card
to modify [for Bipolar DC input] and some existing software that is
close.
The problem many would have with the sound card solution is not
being too happy about trying to modify their laptops (or PCs),
each with it's own type of sound card.
I want this to be something that others can reproduce.
PC data logging capability on a single channel
in the 100 to 1000 samples per second range.
Your PC's soundcard ? 16 bits, 40-some ksps, dual channel ?
I'm looking for a low cost and simple solution to replace an
old 12 bit DataQ ADC in my "nut" project.
What I'll like to find is a 16 bit bipolar ADC system or a
four and half digit DVM / multimeter with PC data logging capability
on a single channel in the 100 to 1000 samples per second range.
It would be nice if it was something that does not take a ton of
programming
time and effort to get working and is readily available and cheap.
Software that allows flexible real time graphing display and simple data
logging on a PC is important.
Cost and overall time and effort to implement, when figuring about ten
units, being important considerations.
WarrenS
Yes, a DMM that does fast data logging to a PC would work fine for those
that already have one.
It does not make such a great universal solution for most.
Anything under a hundred US dollars is worth considering.
What I'm looking for is a 16 bit, bipolar, solution to upgrade
a small, obsolete, DataQ, RS-232, serial, product that uses the 12 bit ADC
of a two dollar Pic micro.
ws
******************
From Marvin E. Gozum marvin.gozum at jefferson.edu
>You can easily do with commercial DMM [ e.g. HP 34401a]
>in the 4.5+ digit range, but what's the working budget?
**************************
At 12:57 PM 12/13/2010, WarrenS wrote:
>>Would work nice, IF there is a universally accepted sound card
>>to modify [for Bipolar DC input] and some existing software that is
>>close.
>>The problem many would have with the sound card solution is not
>>being too happy about trying to modify their laptops (or PCs),
>>each with it's own type of sound card.
>>I want this to be something that others can reproduce.
>
>**************
>> From Poul-Henning Kamp
>>
>>>PC data logging capability on a single channel
>>>in the 100 to 1000 samples per second range.
>
>>Your PC's soundcard ? 16 bits, 40-some ksps, dual channel ?
>
>**********************
>
>>>I'm looking for a low cost and simple solution to replace an
>>>old 12 bit DataQ ADC in my "nut" project.
>>>What I'll like to find is a 16 bit bipolar ADC system or a
>>>four and half digit DVM / multimeter with PC data logging capability
>>>on a single channel in the 100 to 1000 samples per second range.
>>>It would be nice if it was something that does not take a ton of
>>>programming
>>>time and effort to get working and is readily available and cheap.
>>>Software that allows flexible real time graphing display and simple data
>>>logging on a PC is important.
>>>Cost and overall time and effort to implement, when figuring about ten
>>>units, being important considerations.
>>>
>>>WarrenS
>
