Questions tagged [daq]
Abbreviation of Data Acquisition system (aka DAS)
0
votes
2answers
41 views
Change range of data acquisition system
I have a DAQ with many inputs that can measure within +-10 V, and I want to go up to +-30 V.
Using a resistor voltage divider could be an option, but this lowers the input impedance. I would prefer ...
0
votes
1answer
64 views
Splitting an Analog Signal Without Adding Noise
I am trying to take a current measurement, run it into a PCB that splits the signal, and then output the signal in two places. One of the destinations is a RIO being used for feedback control, the ...
1
vote
1answer
44 views
How to check the sampling rate of a Data Acquisition device?
I got a USB sampling DAQ device, which says it is capable of e.g. 100kS/s per channel.
How would I test if it is indeed capable of doing so? I don't seem to find any hints of where I'd start with ...
0
votes
1answer
102 views
Measuring current using ACS 712 with NI DAQ 9215
I am trying to measure current from Ignition coil(12V, 4.5A). i used arduino to measure current. And it worked good. And i connected the ACS712 signal pin to NI DAQ 9215. At zero current the output ...
1
vote
1answer
58 views
Data acquisition wiring - How to deal with extreme noise?
Hi all, I'm trying to build a portable data acquisition system to gather readings really close to high voltage powerlines. I was hoping to get some advice on how to achieve the best noise immunity. ...
1
vote
1answer
64 views
Design/Purchase a Filter for Data Acquisition System
We have several types of data acquisition devices where I work. They're used primarily to measure low frequency voltages (<100HZ, +/-10V). One device has a built in filter that does an excellent ...
0
votes
0answers
59 views
where to separate a whole Analog to digital chain into two PCBs
I wanted to ask this question in ADC vendor's forum, but I realized this is a general signal question. So, put is here.
My question is "where is the best place to separate a whole Analog to digital ...
0
votes
1answer
45 views
Data acquisition microcontroller approach
I'm prototyping a data acquisition device which interfaces with 64 discrete inputs; 32 analogue and 32 digital (user-configurable as either ON/OFF measurement or frequency/duty measurement). I'm ...
3
votes
1answer
70 views
Error in the gain, Amplifier, DAQ system
I have a strain gauge with maximum output of 5mV. I want to amplify this signal 1000 times in order to use my DAQ system to read it (the analog input range is 0-5V for DAQ connector).
I have ...
2
votes
2answers
76 views
Calibrating DAQs
I'm using some of National Instruments' DAQs for some measurements, but their calibration is slightly off. To work around this I am hoping to factor in any imperfections into the measurements such ...
