USB-1608FS-Plus Series

None of MCC’s hardware can accept ASCII commands over the bus. Our Windows API (UL) does include a compiled DLL, but still that DLL does not accept ASCII commands. Someone would need to develop code to call the functions in our DLL via the 3rd party Wavemetics software. MCC does not offer this service.

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Be sure to have InstaCal closed once the USB-1608FS-Plus is recognized, and then open only one application at a time, that can communicate to the MCC DAQ device. Since you can collect data, then our InstaCal driver and USB-1608FS-Plus hardware are installed and working properly. You should request advice from the author of the higher level app you are trying to run (The Mathworks) in your case.

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Yes, the USB-1608FS-Plus is compatible with our Python library. Based on the information provided you should have no problems capturing “Near Real-Time” data using the USB-1608FS-Plus and our Python library. ULAI06.py is a good example on how to double buffer an analog input scan. The enclosure is one of two differences between the standard and the OEM version. The other would be the screw terminals used on the standard version versus the header pins on the OEM.

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The USB-1608FS-Plus ONLY supports simultaneous A/D sampling. Our new USB-1808 supports simultaneous sampling of the A/D, D/A, digital, and counters. You can review the specifications for the USB-1808 here: https://www.mccdaq.com/data-acquisition-and-control/simultaneous-daq/USB-1808-Series.aspx If you have any questions regarding our products. Please do not hesitate to contact Sales Engineering at 1-800-234-4232 Ext-3.

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The analog inputs and counter inputs are not synchronous. Therefore your data would not be correlated. For this you would need to use our USB-1808. Which supports synchronous analog, digital, and counter inputs. https://www.mccdaq.com/data-acquisition-and-control/simultaneous-daq/USB-1808-Series.aspx

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The USB-1608FS -Plus supports up to 8 bipolar analog inputs. Unfortunately, the analog input channel configuration cannot be changed to support unipolar inputs…that is without modification to the hardware itself. Please contact sales engineering to continue this discussion at 508-946-5100.

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When setup to utilize BURSTIO you are limited to a finite scan of <= 32kS. BURSTIO offers faster sample rates by using the onboard FIFO for data storage. After your data acquisition has completed you can then transfer your data to your computer. By doing this you can achieve faster sample rates because you are not limited by the constraints of the USB bus. When setup for BURSTIO “CONTINUOUS” data collection in not supported. You are limited to a finite sample size per acquisition. On page 9 of the User’s Manual there is a great explanation (link below) http://www.mccdaq.com/PDFs/manuals/USB-1608FS-Plus.pdf

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MCC is pleased to announce that MathWorks has recently released MATLAB R2017a (64 bit version) which now includes support for MCC devices. For additional details please visit our web site at http://mccdaq.com/daq-software/MATLAB-Support.aspx or call us at 1-800-234-4232 Ext-3.

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The Measurement Computing drivers for MATLAB are developed by Mathworks. Current MATLAB support is still limited to their 32 bit legacy drivers. 64 bit MATLAB support is currently under development at Mathworks. Please contact Mathworks at www.mathworks.com/support/contact_us for more information regarding their 64 bit support.

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The trigger starts a sampling session (what we call a Scan). You specify the number of samples to collect in the scan, which is usually multiple samples per channel. The rate that the samples are collected can be either the internal clock (at the rate you request) or by an external clock signal. The maximum rate is 100 KHz, so that would be 10 usec between consecutive samples on the same channel. There is overhead to set up for the next scan (i.e. to get ready for the next trigger). The overhead is system specific, but is on the order of 50 msec. If the overhead of starting the next scan is too high, then you could avoid using the trigger altogether, and use only an external clock. For each rising edge of the clock, all 3 of your channels will be sampled once each. Our ULx for LabVIEW driver allows for very large buffers (no loss of data). The same for our Universal Library API/DLL. Python is not officially supported, but any language can call our DLL. The USB-1608FS-PLUS does not have a stop trigger. The sampling can either be continuous (stopped by the programmer) or can collect for a finite number of samples.

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The USB-1608FS-Plus has no anti-aliasing filtering built into the hardware or the firmware. Nor does the provided software have any filtering capabilities. Software filtering is available through our DASYLab BASIC graphical programming language. The high/low pass filtering options available in DASYLab are the Butterworth, Bessel, Chebyshev 0.5 and the Chebyshev 2.

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Hello juankardona, The best way to implement reading all 8 channels every 1mSec would be to use our Universal Library (.NET) and the AInScan() method. With this method you can set what channels to use, your sample rate, and any other argument required for an analog scan. Please refer to our Universal Library Help file for details on this method. We also have “Product Specific” examples to assist you in your program development here: http://www.mccdaq.com/downloads/example_programs/Product_Specific_Examples/USB-1608FS/Universal_Library/

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Hello JuJu, Yes, that is exactly what it means. Each channel a maximum sample rate of 100kS/sec. Which means that you could sample 4 channels at their max rate of 100kS/sec (400kS/sec max) or 8 channels at 50kS/sec per channel. The BURSTIO lets you increase your overall sample rate to 800K. The individual sample rate of 100kS/channel does not change and the data is limited to the on board FIFO (32K). Please contact Sales Engineering if you require assistance in selecting a different product.

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Hello Ryan, Thank you for your inquiry. Yes, two USB-1608FS-Plus units can be synchronized together resulting in 16 simultaneous inputs. By utilizing the “Synch” (pin 36) in a master slave configuration you can use the clock from one USB-1608FS-Plus as a master and control the second USB-1608FS-Plus as a slave unit. This allows you to expand your channel count to 16 simultaneous inputs. I have included a link to a Knowledgebase article that covers this subject. http://kb.mccdaq.com/KnowledgebaseArticle50419.aspx?Keywords=Synch

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Hello Scout - Thank you for your inquiry. The USB-1608FS-Plus can be programmed to continuously collect data and place that data into a circular buffer. This would give you the ability to read the buffer and retrieve your data at any given moment. To do this you would use our Universal Library for .NET

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Thank you for your inquiry. The USB-1608FS-Plus cannot be configured for differential inputs. If you need a simultaneous sampling device that supports differential inputs, take a look at our USB-1608HS. If simultaneous is not a requirement then please consider the USB-1608G Series product line.

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Hi Finmac - No, it will not be able to meet ±1LSB limit across 8 channels. The results can vary by the amount of offset, gain, linearity and noise. See the Accuracy section on page 13 of the User Manual for more information: http://www.mccdaq.com/PDFs/manuals/USB-1608FS-Plus.pdf. For both devices - frequency should not affect accuracy results while amplitude variations are subject to changes in gain error. Temperature changes will produce variations in gain and offset results.

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Thank you for your question. The USB-1608FS-Plus supports 4 individual input ranges. The accuracy for each range is as follows: +-10 = 5.66 mVolts, +-5 = 2.98 mVolts, +-2 = 1.31 mVolts, +-1 = 0.68 mVolts. You can review the full specifications for the USB-1608FS-Plus here: http://www.mccdaq.com/usb-data-acquisition/USB-1608FS-Plus.aspx

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Hello Mitch - Thermocouple measurements are not possible with the USB-1608FS, or with any other general purpose A/D board. The three main reasons are the following: Not enough amplification, no CJC compensation, no low-pass filtering. This is why thermocouple-specific products are offered, such as the USB-TC (http://www.mccdaq.com/usb-data-acquisition/USB-TC.aspx)

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MCC is pleased to announce that MathWorks has recently released MATLAB R2017a (64 bit version) which now includes support for MCC devices. For additional details please visit our web site at http://mccdaq.com/daq-software/MATLAB-Support.aspx or call us at 1-800-234-4232 Ext-3.

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The Mathworks added official support for the USB-1608FS-PLUS in their version R2013b (version 3.3). For possible use in older versions, you should contact The Mathworks.

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This DAQ model has 8 individual A/D ICs, all clocked in parallel. Inside each A/D is the equivalent of a sample-and-hold, so we did not need to add our own external to the A/Ds.

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Hello Abriva – we have a local Distributor in your region that can coordinate the order and shipping costs for you. Our local Distributor that handles all of our orders in Uruguay is: LogicBus Web: http://www.logicbus.com E-Mail: [email protected]

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Hello - The buffer transfers not when the FIFO is full, but rather at 8K sample packets. It takes roughly 1mS to transfer a packet. So to transfer 10 seconds of data would take about 10.001 seconds.

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Many of Measurement Computing's DAQ devices including the USB-1608FS-Plus are supported by the Raspberry Pi system. However, our current driver support is not written in Python. Current support is developed using Linux. For information on using our Linux drivers with a Raspberry Pi please refer to this tech tip: http://mccdaq.com/TechTips/TechTip-9.aspx

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