Duty Cycle of Digital Inputs
I'm trying to use counters to measure the duty cycle of a digital input so I looked at the ReadCtrFreqScalar function but I'm have having trouble finding which type of channel needs to be created for...
View ArticleExprot 100MHz timebase
How can I use Labview to export the 100MHz timebase of the USB-6363 to one of its PFIs for synchronization with a second USB DAQ (e.g. USB-5133)?Thanks,Chris
View ArticleCounter and comparator circuit with hc393 and hc85
I searched for a full schematic for building a comparator circuit and counter circuit that are connected to each other, using ics hc393 and hc85 but couldnt find any. Can san someone send me a...
View ArticleNI error -201133; Input and output on the NI9401
Former user of Matlab, it is the first time I try to work with the DAQ and national instrument. My device is a NI9401.I want to record the position of 1 optical encoders. For this , the encoder is...
View ArticleNI9011 and NI9411 lost points from quadrature encoder
Hi everyone! I have a big problem! I have a cRio9075 with a NI9011 to read a TTL x10 quadrature encoder (heidenhain MT1271). The module can read the encoder but it have a serious problem. When the...
View ArticleiviCounter class compliant specific driver using daqmx functionality
Are there any plans for NI to create IviCounter compliant specific driver for any of NI Counter/Timer HW like NI PXI-6602 ? In our application it is mandatory for us to use IviCounter interface which...
View Articlemultiple counter recording with NI9401
I am about to buy a NI9401 which will be connected to a NIcDAQ-9171. But I am now testing the NI9401 with a NicDAQ-9172.My objective is to record simultaneous the position of 2 encoders (using 2...
View ArticleIs it feasible to generate a quadrature signal with an NI 9742 module?
I need to generate a low frequency (<1KHz) quadrature signal and am considering the NI 9742. Does anyone know of code example to generate a quad signal that would suit well with this module or...
View Articlecounters synchronization
Hello everyoneSo, here is my problem..I want to generate 4 synchronized continuous pulses and I have a NI 9401 plugged in a cDAQ 9171. My thought was to create a pulse generation task with four...
View ArticleMonitoring Digital IO
I am pretty new to labview programming and am needing some direction. I am currently trying to setup a simple program to monitor the status of a few digital io. I need to start a timer when one input...
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multiple TTL finite pulse trains
Dear NI forum members, We just got a NI PXIe-1073 Chassis with a NI PXIe-6361 switched in PXI1Slot2 and a shielded connector box BNC-2111. Aim is to generate three TTL pulse trains to control a laser,...
View Articleedge counting inaccurate
I'm getting inaccurate results from my USB-6210 edge counting check from MAX. I have a TTL source that generates four pulses that is connect to PFI0 through a simple RC filter (390 ohm and 0.02uF). I...
View Articlewind turbine overspeed guard
Hello, I bought a Arduino uno board and labveiw bundle to replace VOG (vestas overspeed guard). i'm basicly looking for a pulse counter that will trip a relay when it counts to many pulses in a certain...
View Article9401 Frequency Rate
Hi guys! Can everyone tell me what is the real scanning DIO frequency? (Actually i only use 4 DIOS). In datasheet, for 4 inputs is announced 16MHz, but this value is not correct because i cannot catch...
View Articlemeasuring varying frequency with 9401
I need to measure a varying frequency with a 9401 in 9178 chassis. I am using an Express VI. I have the input connected to the 9401 terminal and can read counts just fine expect that the counts per...
View Articleretriggered single pulse
I am using NI-DAQmx C/C++ API. How can I set up a counter to produce a retriggerable single pulse? That is, I need to trigger an output pulse, and while the pulse is being generated, if a new trigger...
View ArticleUSB 6008 DAQ Read switch wiring
Hi i am looking to wire a magnetic read switch into the 6008 DAQ. The switch has just two wires and im just using it to count events.If anyone could help that would be great.Attached is the lab view...
View Articlecontinous loop
i have developed a program to postion probe drive using stepper motor. in this program m calculating pulses required to given to stepper motor and then using daq m generating the pulses, but i am not...
View Articlecounter input using PFI0
Hi everyone,I am trying to make frequency measurement using PFI0 or PFI1 in the cDAQ-9188 and DAQmxis it possible to do so ???can i have guide for that ?thanks
View ArticlePXIe-6674T OCXO to PXI_CLK10_In Issues
Hello, Currently I have a PXIe-1082 chassis, PXIe-8101 controller and a PXIe-6674T timing card installed in slot 4. What I want to do is connect the oscillator on the timing card to clk10_in to improve...
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