What's the practical difference between active drive and open collector?
I've done some searching and I understand what it is, but I don't understand what it means in practical terms. Why use one or the other?
View ArticleMy daq outputs 3.3V but I need 5V. What solutions are there?
My daq outputs 3.3V, and even though the device I'm driving says its TTL compatibile, apparently its not enough and I need 5V. What solutions are there? I'm completely new to all of this.
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Use cRIO DO module NI 9477 as relay to provide 24V input for Siemens S7-200...
Dear All, could anyone please confirm my usage of NI 9477 as a relay works or not with following details. It might be too silly question but I am sure it is not posted before and I really cannot afford...
View ArticleUpper/Lower limits of PWM Frequency
Hello together, I am planning to control a DC-motor with the PWM-Output of a Microcontroller and I am not sure how to set the PWM-Frequency. The microcontroller update rate is 200Hz and the DC-motor...
View ArticlePCI-6514 not supported in Linux drivers?
Hi,I've noticed that the NI-DAQmx base package does not include support for the PCI-6514 card. Why is that? Is there any chance it will be added in the future? NI-DAQmx 8.0.2 is getting a bit long in...
View ArticlePXIe-6537 Stopping waveform generation
Hi all, I am using a NI PXIe-6537 50MHz DIO card in a PXIe-1071 chassis. I have been assuming that the 50MHz speed quoted is the maximum sample generation speed. Using the 'generate waveform'...
View ArticlePCI 6503 on a PCI-e with raiser
I am upgrading the motherboard of our test system that uses 6 PCI slots including a PCI 6503 and a PCI-GPIB card. It is difficult to get a motherboard with 6 PCI slots. Question is will the 6503 and...
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R Series NI SPI FPGA - NI SPI IP Example - LabVIEW Crash
Hello, I am trying to run the R Series - NI SPI FPGA Simulation.lvproj project example that comes with NI SPI IP on an actual PXIe-7976R FlexRIO FPGA target with an attached NI 6581B Digital Adapter...
View ArticleUSB6341 Digital/Counter output voltage
I hope to use USB6341 to generate a trigger another device that requires 3.3v input. I wonder if USB6341 output can be configured to generate 3.3v digital/counter output? Thanks.
View ArticleControlling multiple AO signals with 9263?
Hello, I am trying to control 4 relays with a 9263 compact DAQ module. I know the code works because 1 of the relays functions exactly as I intend and I get no errors. The problem is, no matter how I...
View Article9401 driving a SSR
Is a 9401 module capable of driving a small (5amp) SSR with a 4-15 volt input?
View ArticleDigital output NI-MAX tasks always reads low
In the system I'm working with, the ports on the USBs are being written to by an application, and I want to read the digital state of the wires at a certain point in time. I'm trying to perform these...
View ArticleMore than 32 channels of hardware timed DO? 24V Sourcing would be great.
Hi, For several projects, I've used a NI-9476 to directly actuate solenoids, taking advangtage of the hardware-timed channels (the 2kHz rate was fine, but wouldn't want to go lower than 1kHz). It...
View ArticleHow to control solenoid valves from computer
I work for a small PV&V department. We have a cDAQ-9188 chassis with numerous cards for performing data aquisition, using Signal Express. We also have a PLC (Automation Direct) for controlling...
View ArticleNI-9425 Clock Rate
I am currently attempting to change the clock rate on a NI-9425. The module manual states that the rate should be 7us, but when I am testing it the rates seems to be locked down to 1kHz that is a far...
View ArticlePull a stepper pulse input low (ground) with a 9472 or 9381
I have a stepper motor controller that requires a pulse output from my cRIO. The input for the pulse is tied high with a 20k ohm resistor on the driver and the rising edge of the pulse will cause it to...
View ArticleRoboRio Connectors
I'm trying to find the correct connectors for all the available ports on the RoboRio. The students want to create a cable harness for their robot. ThanksMichael
View ArticleHeavy Copper PCB- hitechcircuits.com
Heavy Copper Printed Circuit Board (PCB) is a combination of processes that allows extreme copper thickness requirements to become efficient and cost effective. Heavy copper PCB is designed with 3 or...
View ArticleUsing DAQmxWriteDigitalScalarU32 to write channels sharing same port(s)?
Hello,I have a USB-6509 and NI-DAQmx 15.5.1 installed. Using the ansi c api. Is it possible to create several independent channels that use different lines from the same port?...
View ArticleGetting around the DAQmx driver software
Hi, Is it possible for me to talk directly to the driver without going through the C# DAQmx.dll driver software? I need to work in java and although I found away to wrap the DAQmx.dll C# library with a...
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