The best DAQ data acquisition system depends on channel count, signal type, sampling speed, and whether you need standalone recording. The KEYSIGHT DAQ970A is best suited to professional measurement and scanning; the DI-2108 is a strong fit for Excel-based logging and USB-drive recording. For compact USB multifunction use, compare the USB-1408FS-PLUS and the two USB-6000-series cards by their input configuration and sampling rates.
| System | Best For | Key Specification |
|---|---|---|
| KEYSIGHT DAQ970A | Professional scanning | Three-slot mainframe; scans up to 450 channels per second with a specified module |
| DI-2108 | Excel logging and standalone capture | Eight differential inputs; up to 160,000 samples per second |
| USB-1408FS-PLUS | General USB multifunction I/O | Eight analog inputs and two analog outputs |
| USB-6009 card | Higher-rate USB measurement | Eight analog inputs; maximum 48 kS/s |
| USB-6008 card | Lower-rate portable experiments | Eight analog inputs; maximum 10 kS/s |
KEYSIGHT DAQ970A Data Acquisition System
The DAQ970A is a professional data acquisition mainframe with three module slots and USB, LAN, and GPIB interfaces. Its internal digital multimeter offers 6½-digit, 22-bit resolution. With a new solid-state multiplexer module, the system scans up to 450 channels per second.
Best for: Professional users who need a configurable mainframe, multiple connection options, and channel scanning. It stands out from the USB modules because it is designed around a three-slot mainframe and offers a stated internal DMM specification.
Limitation: The product is intended for professional use only. The stated scanning rate depends on using the specified solid-state multiplexer module.
DI-2108 Eight-Channel Voltage DAQ Kit
The DI-2108 measures voltage across eight differential analog input channels, with a ±10 V range and 12- to 16-bit ADC resolution. Its listed throughput reaches 160,000 samples per second. The kit includes a USB cable, signal-connection screwdriver, NIST-traceable calibration certificate, and 32GB USB flash drive.
Best for: Users who want to stream measurements to Excel or record without keeping a computer connected. Included WinDaq ExcelLink can stream data to an Excel spreadsheet in real time, while standalone recording can save in WinDaq or Excel-compatible CSV format to a USB drive.
Limitation: The eight input channels are specified as fixed channels, so choose another option if configurable input counts are essential.
USB-1408FS-PLUS Multifunction DAQ Module
This USB-based module combines eight analog inputs, two analog outputs, 16 digital I/O lines, and an external event counter. Its inputs can be configured as eight single-ended or four differential channels. The listed 48 k/s rate is aggregated across all channels.
Best for: Buyers who need several types of I/O in one USB DAQ, including analog output and digital signals. Its selectable single-ended or differential input arrangement offers a choice of measurement configuration.
Limitation: The 48 k/s figure applies across all channels, not separately to every input. It is described as a low-speed USB device, so compare its throughput with faster options for high-rate capture.
USB-6009 Multifunction DAQ Card
This card lists eight single-ended analog inputs with 14-bit resolution and a maximum sampling rate of 48 kS/s. It also provides two analog outputs, 12 bidirectional digital I/O lines, and a 32-bit counter. A built-in 5 V, 200 mA output is specified for external sensors and small circuits, along with a 2.5 V reference output.
Best for: Portable lab or field measurements where a USB-powered unit with analog, digital, and counter functions is useful. Its stated 48 kS/s maximum is higher than the USB-6008 card below.
Limitation: The listed eight analog inputs are single-ended. Confirm that this input arrangement suits the signals in your setup before choosing it.
USB-6008 Multifunction DAQ Card
The USB-6008 offers eight analog inputs configurable as single-ended or differential, with a maximum aggregate sampling rate of 10 kS/s and 12-bit differential resolution. It also includes two analog outputs, 12 digital I/O lines, and one 32-bit counter. The listed features include a 5 V, 200 mA sensor supply and a 2.5 V reference output.
Best for: Portable measurements and laboratory experiments that can work within a 10 kS/s aggregate rate. Choose it over the USB-6009 when its lower stated sampling rate is sufficient and the configurable input arrangement is useful.
Limitation: Its maximum aggregate rate is lower than the USB-6009 card’s listed 48 kS/s, making it less suitable when higher sampling throughput is needed.
Buying Guide: How To Choose A DAQ System
How many channels and what input type do you need?
Count the signals you need to capture at the same time. Then check whether the device offers single-ended inputs, differential inputs, or both. Differential inputs are specifically listed on the DI-2108 and can be selected on the USB-1408FS-PLUS and USB-6008. The USB-6009 listing specifies single-ended inputs.
What sampling rate is appropriate?
Compare the rate with the speed of the signals you intend to measure. Also check whether a published rate is per channel or aggregate. The USB-1408FS-PLUS and USB-6008 specify aggregate rates, while the DI-2108 lists throughput up to 160,000 samples per second. The DAQ970A’s channel scanning figure is tied to a particular multiplexer module.
Do you need standalone recording or computer software?
Choose the DI-2108 if saving to a USB flash drive or streaming to Excel is central to the workflow. The other listed products are described as USB DAQ devices or modules; verify software and recording requirements for your intended setup before buying.
Which connections and extra I/O matter?
For a professional mainframe with USB, LAN, and GPIB, consider the DAQ970A. For compact devices, compare analog outputs, digital I/O, counters, sensor power, and reference outputs. These features vary: the USB-1408FS-PLUS has 16 digital I/O lines, while the USB-6009 and USB-6008 list 12.
What should portable users check?
The USB-6008 and USB-6009 are listed as powered from a 5 V USB bus and do not require an external power adapter. Check the product’s input limits, software requirements, and connection needs against your measurement setup before purchasing.
Frequently Asked Questions
What does a DAQ data acquisition system do?
A DAQ system captures measurement signals through inputs and makes the resulting data available for recording or analysis. Available input types, channel counts, and sampling rates depend on the particular device.
Which product is best for Excel data logging?
The DI-2108 is the clearest match in this list because its included WinDaq ExcelLink can stream data to an Excel spreadsheet in real time.
Which option has the highest listed sampling throughput?
The DI-2108 lists throughput up to 160,000 samples per second. Its channel configuration and measurement range should also be checked against the application.
Are the USB-6008 and USB-6009 the same?
No. The listed USB-6009 maximum is 48 kS/s, while the USB-6008 maximum is 10 kS/s aggregate. Their analog input configurations also differ in the supplied product specifications.
Does the DAQ970A include all modules needed for scanning?
The product information describes a three-slot mainframe and states that scanning up to 450 channels per second is achieved with a new solid-state multiplexer module. Confirm module requirements for the intended setup.