how to add the external source Vcc at optocoupler ? and connect it to the USB...
I want to connet My daq to Optocupler for count RPM , i use PFI 0 anda Groud and connet to Vout and Negatif Optocoupler. But Optocupler need Vcc and my daq doesn't have sourcE, How do I get source ?And...
View Articlesampling rate not respect with 9401
Hello,I have an cDAQ 9178 with the 9401 on slot 2 and 9205 on slot 6. I want to acquire the counter CTR1 synchronized with the AI clock of the 9205. To do that I use the DAQmx Timing and the DAQmx...
View ArticleIssue with multi-channel analog measrements using PXIe-6341
Hello, I am experiencing unexplained behavior with a PXIe-6341 card which is being used with a SCB-68A cable. I have 3 sensors connected as follows: AI 0 – Pyrometer AI 1 – Pressure Sensor AI 2 –...
View Articlemultiple sample rates, 9205/9068
I have a 9205 analog input module in a 9068 cRIO chassis. I understand that I must sample all the analog channels at a common rate. However, this means that the lower bandwidth channels will be highly...
View ArticleDAQmx WriteAnalog
I want to sent a continuous signal and implement this function in Python 2.7. For this, I first tried the example of scipy...
View ArticleBad thermocouple measurement's on 50 Hz
We are using 9213 thermocouple modules on a Cdaq chassis to measure various temperatures including winding temps on an AC motor in a medical device. We are using J type unshielded thermocouples. All...
View Articlelectura celda de carga
Buenas tardes, Me gustaria saber si puedo adquirir datos de una celda de carga a través de una DAQ 6008, y si puedo hacerlo directamente o es necesario un PI-B Programmable Isolating BridgeTransmitter...
View ArticlecDAQ-9174 connection to computer
I have a NI cDAQ-9174 including three modules: NI 9213, NI 9201, and NI 9263. I have installed the driver by the provided DVD. Also, we have Labview 2012 on the computer.When I connect the USB to the...
View Articleaccurate fft after dc offset removal
Pls someone should help look at the attached VI. I want to remove dc offset and still obtain accurate fft. In my VI, once I remove the offset the fft only sees the magnitude of the first sample...
View ArticleHardware to Measure 5µs TTL Rising Time
Hello, I have a cRio 9074, with 1 NI9401 for cRio. I need to measure the rising time (10%~90%) of a TTL signal, this signal has a frequency of 2kHZ and an expected 5µs rising time.My question is how...
View ArticleProblems when measuring analog voltages 6014 PCI card
I need help I'm using an acquisition card PCI 6014 data for reading an analog voltage value on a trial using the application NI-DAQmx to test the card but I had problems because the card does not read...
View Articlei got a problem while acquiring the voltage through cDAQ Module
Hello, I have cDAQ, PXI modules Through which i perform data Acquisition. The acquisition though PXI card is fine, but all the problem i got is when i acquire the voltage signal through the...
View ArticleBlack device icon and test panel missing in MAX
We have seen that on Windows 7 when installing a USB-9315 device on DAQmx v14.2 it is not correctly recognized in MAX. The icon is black, and most of the panes are missing, like the Test Panels, Create...
View ArticleAltering default API of NI USB-6218
Is it possible to alter the default API (NI-DAQmx Base 14.0) for NI USB-6218 on Linux?
View ArticleNI 6221 PCI encoder hardware connection
Hello, I would like to consult possibility of connection DFS60B-S1MA10000 incremental encoder (https://www.sick.com/de/en/encoders/incremental-encoders/dfs60/dfs60b-s1ma10000/p/p293367) to PCI 6221...
View ArticleExecute different DAQmx tasks based on DAQmx output buffer index
Hello everyone, I am a beginner labview=>DAQmx user and i run into the following problem/challenge; I am sending a array of data (signal) to a USB DAQmx device, and i want to switch two powersupply...
View ArticleHow to know the property in trouble when having error "Requested Value is not...
Hello,I'm using LabWindows/CVI and when doing a DaqmxStartTask, I get the error : "Requested Value is not a supported value for this property."This message was obtained by calling DAQmxGetErrorString...
View ArticleCalibration Executive 3.3
I'm using CALEXEC 3.3 to calibrate a PCI-6036E DAQ card and an error comes outError -1074126845 ocurred at IviDmm Read.vi at e=step Verify Analog output. This is the first time I encounter this...
View Articleinput and output differ
I have a pxie-6358 in a pxie-1062 with controller pxie-8360. when i give a 1V sine wave on ao0 I do not read 1v on ai0. I have tried with the test panel and the example vi's. I am not sure why this...
View ArticleExternal Trigger USB6210
Hi all, I am trying to do measurements with the NI-DAQ USB6210 using an external trigger sourceThe main purpose: Sending a trigger signal and aquire X measurements..and that for like 10 000 trigger...
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