Other Parts Discussed in Thread: DAC8760
I am testing the I-out by installing the JP6 jumper that will put the on-board 300ohm resistor in the I-loop path so in theory I should be able to measure the voltage across the resistor and determine how much current is passing through it.
Since its a 300ohm resistor, an output of 4-20mA should give me a voltage across the resistor in the range of 1.2V and 6V whereas I am getting 0.525V on the low end and 2.336V on the high end.
The voltage output is correct and it goes from 0v to 5v which matches the Vref I have but the current output doesnt make any sense..
I have tried with Boost and without Boost.
I measured the current by putting the multimeter in series of JP6 and I am getting 2.91mA on the low end and 9.32mA on the high end. where as it should be 4mA and 20mA.