Counter Encoder Plotting
I have been trying to plot an encoder position over a counter channel and receive a fairly smooth plots. When executing my plotting VI all alone this is easily achieved, once added into my application...
View ArticlePXI 6238 Counter Output Frequency
Hi, I have a PXI 6238 and want to use the counter output application. I use ctr1, see also the attached image. However, i only get a constant HIGH signal at the port with the 24V level that I set at...
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Counter Semiperiod resolution
Hi, We have 2 similar measurement setups for pulsetrain measurement (measure duty cycle). We however see very different results in measurement resolutions : Setup 1 : PCI-6602 (8x 32-bit counter)We...
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Any information about DAQmxGetCIEncoderZIndexEnable
I am sorry for posting a software programming question in a hardware forum but either there isn't an appropriate forum for my question or it takes more than a 35-year software engineering experience,...
View ArticleCounter with external Timing stops after a few measurements
Hello everyone! This is my first project using Nidaqmx and I've run into a problem:I want to measure the incoming signals with respect to a timing signal I create with the following code:...
View ArticleDAQmx Read seems to skip counter Period measurement
I'm doing buffered period measurement with a 6602. I start the task, then I would like to have the DAQmx Read task take place in a while loop so that I can update indicators with period measurements...
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NI 6030e ctr 0 out and ctr1 interference
Hi, I am using a NI 6030e connected to SCB-68. And use CTR1 out and CTR0 out to generate pulse train to control step motor. But I found that if CTR1 or CTR0 is generating pulse train, at the...
View ArticlePlease recommend a counter/timer card for a encoder to find phase angle
Hi, We are Using PXIe 8135 controller and PXIe 1082 chassis. I want a card compatible with this that can acquire data from an encoder. Our current requirement is to get data from an encoder with 1000...
View ArticleGenerating multiple overlapped pulse trains
I need to generate 4 Continuous Pulse Trains. Each pulse train needs to be 90 Deg out of phase from the previous (0 deg, 90 deg, 180 deg, 270 deg). I'm using a PXIe-6358 which has 4 counters. Each...
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Frequency measurement clock timebase.
Hi there,I am currently working on acquiring high frequency counter signals from rotary encoders, typically accurate to few nanoseconds. Previously I was using NI 9401 to acquire signals but it...
View ArticleAccuracy of PXIe-6614 ?
I did not find direct specification on clock accuracy . There are "Temperature drift only" and "Temperature and 1 year drift (excluding retrace error)", but there is not accuracy information.Did...
View ArticleContinuously Measure RMP of BLDC Motor: 3,000RPM Max, 24 Pluses per...
Hello, Can someone please help, I need to measure the RMP of 2 BLDC Motors they are 3,000RPM Max, 24 Pluses per revolution from the encoder. I have the NI 6009 and I'm using LabView 2017. Can the NI...
View ArticleHardware needed to control 100 PC fans
Hello, I am fairly new to picking National Instruments products and I am a bit confused about the hardware I need. The project I am working on requires 81 PC fans to be independently controlled with...
View ArticleGenerate PXI backplane Trigger From Multiple Channels
I have 7 counter channels running on the 6614 timer card. Each channel is triggered by an externally generated digital pulse. I would like to generate a single back plane trigger if any of these...
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FPGA photon counter low voltage
Hi! I'm currently building a photon counter using the USB-7856R R series multi function rio. I have attached the labview program I'm using to count 1VPP square waves, and it works just fine. However, I...
View ArticleGenerate and measure PWM on cDAQ without any module
So, I can generate a PWM Signal, i.e. 1kHz 50% duty cycle on let's say /cDAQ4/Ctr0InternalOutput.Can I anyhow measure the frequency and duty cycle of this, without using any module in the cDAQ Chassis?...
View ArticlePCI-6602 Generates Finite Pulse-Train Generation Per 7 Millisecond Though...
4.Can I cooperate with two counters, counter A is used to generate pulse train, counter B generates GATE signal, when GATE signal is activated, counter A has pulse train output, when GATE signal is...
View ArticlePCI-6602 Generates Finite Pulse-Train Generation Per 7 Millisecond Though...
1.Can the 6602 generate Finite Pulse-Train every 7 Millisecond, and the frequency and duty cycle of the pulses produced in different times are different. If the anser is yes, how can I achieve it(my...
View ArticleRunning a counter in actual time (seconds) with varying values (including...
Hello everyone. I am making a program in which a counter starts from 5 and goes to 0 and then a LED light gives an indication by turning on. After that a random event occurs whose value is added to or...
View ArticleUSB 6353 Counter Triggering
I'm currently developing a VI which uses a trigger signal to specify a reference point which I need to use to synchronise an analogue input, which can use the trigger, and a digital counter, which...
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