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  • Answer count
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  • First answer
    April 15, 2013
  • Last answer
    December 18, 2014
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I/O Library for Measurement Computing Data Acquisition Products
 

DLL library loads slow

I use the universal library in C++, Visual Studio 2010. The cbw32.dll library loads about 7.5 sec and it causes a delay to start my application. Is there any way to load the library faster or to load only the functions which are used? I need only few functions for PCI-DIO24 board.
Hello Pavel - We have performed additional testing, and the combined load and initialization time can be as long was what you reported. As a result, we expect to be able to reduce this (to well under 1 second) in an upcoming UL version.
10 hours ago
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MeasurementComputing
 
I/O Library for Measurement Computing Data Acquisition Products
 

DLL library loads slow

I use the universal library in C++, Visual Studio 2010. The cbw32.dll library loads about 7.5 sec and it causes a delay to start my application. Is there any way to load the library faster or to load only the functions which are used? I need only few functions for PCI-DIO24 board.
Hello Pavel - 7.5 seconds sounds much too long for simply loading CBW32.DLL. 1-2 seconds is more typical. Perhaps your program is trying to call a function in the DLL as the program is loading. The first time a function (that accesses DAQ hardware) in the DLL is called, there is hardware initialization that is performed, which takes about 4-5 seconds. In summary, there are probably 2 delays at work here. We can’t reduce either, but perhaps you can postpone the second one, by not calling a DLL function until your program is fully loaded.
3 days ago
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MeasurementComputing
 
96-Channel, High-Drive, 64 mA Digital I/O Board
 

Pull Up

If I am using some of the ports as inputs and some as outputs should I only install pull up resistors on the inputs are does it matter.
Job Title:: Enigineer
Industry:: Avaiation
Application:: Integrated Test Set
Pull resistors may be useful for both inputs and outputs. But if they not required by your application, they generally pose no problem if they are still installed. For example, most of our USB devices have pull resistors installed by default. For our PCI boards, most do not have any installed by default (which is the case for the PCI-DIO96H that you are using).
3 days ago
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MeasurementComputing
 

Linux support for newer devices

Hi

I've noticed that for a while the new USB devices I'm receiving info on are not being listed on the Linux page.

Is the Linux support (DAQFlex etc) no longer being supported? The device I'm interested in currently is the USB-230-OEM.
Regrettably, no new products will be added to our DAQFlex library. Support for existing hardware will continue. For an easier out-of-the-box Linux experience, we recommend using the MCC 3rd party drivers. Please see http://www.mccdaq.com/daq-software/Linux-Support.aspx for more details. Currently, the USB-230-OEM series is not supported by our Linux drivers. The hardware architecture of the USB-230-OEM series does not lend itself easily to Linux development. For that reason we have chosen to hold off with Linux development. For a low cost 16 bit DAQ device with Linux support, I would recommend one of our USB-1608G series products. Please see http://www.mccdaq.com/usb-data-acquisition/USB-1608G-Series.aspx
2 weeks, 1 day ago
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MeasurementComputing
 
16-Bit, 50 kS/s, Multifunction DAQ Board with 2 Analog Outputs
 

EMC & Cable Length Restrictions

I note that the EU DoC on p. 26 of the User Guide says, “To maintain compliance to the standards of this declaration, ...I/O cables must be less than 0.5 meter (20 in.) in length.” Are there issues above this length. If so, can you give me more detail? We’re keen to exceed this length.
Job Title:: Senior Electronics Designer
Industry:: Scientific research instruments
Application:: 3rd Party product control
Hello - In order to stay in compliance the following conditions listed on the CE Declaration of Conformity must be adhered to. If deviated from MCC cannot guarantee that the USB-231-OEM device will meet the directives or standards listed on this document. No supplemental details are available on the test results performed on the USB-231-OEM device.
2 weeks, 2 days ago
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MeasurementComputing
 
I/O Library for Measurement Computing Data Acquisition Products
 

Borland6 C++ supporting DAQ products

I will start a funded engine test project shortly. I am currently using Advantech PCI 1716 for DAQ. I designed and built my own IO interface. I want to purchase various products from MSC. I have my private software with visual interface on Borland6 C++ (XP 32). Please advise me on your relevant products.
Job Title:: Head of Department
Industry:: Automotive
Application:: Internal Combustion Engine Research
Hello Demir - Unfortunately, our Universal Library no longer supports Borland compilers. A possible workaround would be to use the Implib.exe program within Borland to create an Import library file that would call into our C++ DLL that is provided with our Universal Library drivers.
2 weeks, 2 days ago
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MeasurementComputing
 
Battery-Powered Remote Temperature Data Logger
 

Measure water temperature?

I want to know when a thermocline occurs in my 58' deep lake by placing a temperature logger every 10' for 12 months, recording the water temperature in celcius or farenheight every hour. Then periodically, I would like to pull up the logger to read and print results from my laptop computer onto a data table and/or chart. Computer uses Windows 7 or 8 #next year#.
Other software used:: Windows 7 and microsoft office 2010 - excel
Job Title:: Owner
Industry:: fishery
Application:: continuous water temperature
Hello redrock - Unfortunately, the USB-500 Series, which includes the USB-501-LT are not designed to be submerged in water. They are IP67 compliant which means that they are dust proof and can be immersed in water up to 1 meter for a short length of time. Please contact Sales Engineering at 508-946-5100 to discuss alternative products.
2 weeks, 3 days ago
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MeasurementComputing
 
Single-Channel Thermocouple Measurement Device
 

Can this used with the MC Universal Library?

Our company uses a number of MC DAQ products, and our programmer uses the MC Universal Library to control and read data from them. We just purchased a USB-2001-TC, and he wanted to know if he can talk to the USB-2001-TC with the Universal Library, or if he needs to use DAQFlex.
Job Title:: Computer Support
Industry:: Electronics
Hello parny - Thank you for your continued support of Measurement Computing products. Yes, the USB-2001-TC is now supported by the Universal Library.
2 weeks, 3 days ago
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MeasurementComputing
 
Ethernet-Based Strain Measurement Module
 

Screw Terminal Accessory (CN268) connections?

I want to connect a two wire 120ohm strain gage via the RJ5012 Pin Screw Terminal Accessory (CN268). I have a 120ohm resistor to form the quarter bridge but cannot find detailed information on the screw connections needed to the CN268. is there any additional info?
Hello nj12 - The connection diagram is molded into the side of the CN268. It shows that one side of the gauge is connected to pin 0 and the other side goes to both pin 1 & pin 2. For best results run two wires to the other side of the gauge – don’t run one and then jumper a wire across pins 1 & 2.
2 weeks, 3 days ago
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MeasurementComputing
 
16-Bit, 50 kS/s, Multifunction DAQ Device with 2 Analog Outputs
 

Is there electrical isolation between the USB port (computer) and connected equipment?

Is there any electrical isolation between the computer ground via USB and the ground of the connected circuit? If not is there any protection in the USB interface to prevent damage to the connected computer?
Job Title:: Technologist
Industry:: Contract Electronic Manufacturing
Application:: Product Testing
The USB-231 does not incorporate any USB isolation between the field wiring and the PC. If isolation is a requirement, then please refer to one of the following products with isolation support:

USB-2408 (500vdc field wiring to PC)
USB-2416 (500vdc field wiring to PC)
USB-1602HS (500vdc field wiring to PC)
USB-1604HS (500vdc field wiring to PC)
USB-2404-10 (250 vdc chan to chan, chan to gnd)
USB-2404-60 (250 vdc chan to chan, chan to gnd)

Please feel free to contact us if you have any questions regarding any of the above products.
3 weeks, 2 days ago
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MeasurementComputing