using scxi 1303 and 1100 to measures of pressure

Hello

I use the scxi 1303 and 1100 to measure the voltage inputs. Specifically, I have 8 voltage at 0 - 10 v and 9 measures of pressure to 4-20mA, converted to signals 1 - 5V with a 250 Ohm resistor.

My arrises now question about pull upward resistance. I don't have resistance inserted (as the manual leads me to believe that they are not necessary). My arrises now problem of a difference in the voltage across the resistance (the same as the display of pressure transmitter) and the voltage displayed by Labview.

For example:

Voltage = 1.47 V

LabVIEW display = 1.18 V

1303/1100 Setup requires it resistance of 10 ohms, or don't you think that something is happening?

Thank you and please forgive me if this question has been addressed!

Good news... After much stable, time and tears I have solved the problem. I have indeed had a hardware issure. The module SCXI-1100 I used was broken somehow and was replaced by a functional SCXI-1102.

Thank you for helping me think about troubleshooting ideas!

Tags: NI Software

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