NF-5035 measuring E-field - unit position
I did measurement of E-field beneath power transmission line. I was measuring vertical component of E-field vector.
I put the unit in two different positions (both for measuring Y-axis, as described on page 43 in manual), and I got two very different readings (pictures attached): 353V/m in position 1, and 1049V/m in position 2. Position 2 is 180 degrees rotation of position 1.
Why did I get different readings?
High is not the problem, it must be consistent, if its NOT you have wrong settings, see viewtopic.php?f=31&t=762&p=3229&hilit=attenuator#p1528
Which position of the unit is recommended for measuring uniform electric field below power transmission lines (only vertical axes)?
In user manual, it is said that the E-field sensor is located in the upper-left corner of the unit (Y-axes is going through rear side of the unit). Does the position of the unit rear side have the impact on the readings?