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It also provides 4 analog output channels. When you say that you are 5 bits off the expected value, do you mean that, for example, when you are expecting an unscaled value of binary you get a value of binary ?
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Check wiring connections and terminations. Test it with a seperate, totally isolated power supply, even if just as a test. Manuals, Datasheets, Drivers, Links.
They are not precision instruments. You may have some issues with noise if the conduit carrying the wire isn’t isolated from say discreet control signals or motor leads. Is the problem apparent on all analog inputs or just a few?
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What are the wire lengths involved? You may find the solution to be using a seperate power supply to power the analog loops.
Start this test at the transmitter, and work your way along the signal lines until you determine where the noise is introduced. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require manul additional information.
You might be getting noise due to this power phase difference. By Evandro on 9 March, – You can zoom in close to see the labels with the serial number or zoom out to see the overall condition of the equipment. Valid Email Required Item to Inspect: Try putting an approriate resistor in the line, and put an oscilliscope across it to see what sort of ripple you get out of the transmitter.
I’m going to go out on a limb and suggest that the problem is probably not noise, at least not localized to the current loops.
A-B Analog Input Problem
InstraView Request Form To get started: Visit our Post Archive. By Joe on 5 March, – Use double quotes around phrases, as follows: Mercury Drive Champaign, IL To search the site, enter your search terms in the box labeled “search the site” and hit Enter. Just a few things to kanual, David. Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc.
It’s free, and you can customize the content you view, as well as being able to subscribe to threads and topics, getting new posts delivered to your email as they 1746-mo4i. Ground loops can be a problem if attached at both ends. Is this in a panel installation or being bench tested? We are seeing 5 bits of noise that we can’t explain. By Mark on 11 March, – 5: