Power comsumption on Zedboard.

Tell us how your experiment is running with Red Pitaya
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nestibal
Posts: 1
Joined: Thu Jun 04, 2015 2:26 pm

Power comsumption on Zedboard.

Post by nestibal » Wed Jul 15, 2015 8:18 am

Hi everybody,

I'm trying to measure power consumptin of a zed board thanks the 10m-ohm resitor on the main power line (connector J21).

Since I expect a consumption arround 6 W, I should have 500mA passing throug this resistor and I should measure a tension around 5mV.

However I measure 200mVwith the redpitaya? Does I have miss some calibration procedure or am I doing the measure wrongly?

My backgrounds in electronics and mesurements are very light and I'm sorry if my question is too naive!

Have good day.

Nils Roos
Posts: 1441
Joined: Sat Jun 07, 2014 12:49 pm
Location: Königswinter

Re: Power comsumption on Zedboard.

Post by Nils Roos » Wed Jul 15, 2015 10:40 am

What is the reading when you shortcircuit the Red Pitaya's measurement probe ?

If it's not very near 0, your calibration is probably off.
All in a day's work for Bicycle Repair Man

fisafisa
Posts: 29
Joined: Fri Jun 06, 2014 6:02 pm

Re: Power comsumption on Zedboard.

Post by fisafisa » Tue Oct 20, 2015 8:11 am

wrong gain on red pitaya (x32 dip switch at front)?
160mV = 32*5

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