16
c
HAPTER
3:
Operation
F71/F41 Teslameter
In high-frequency mode, the instrument has a typical frequency response shown in
the figure below. This bandwidth may vary to some degree between instruments.
Each probe has its own frequency response.
3.4.2 Averaging
Window
Time interval settings can be set from 10 ms to 10 s, in increments of 10 ms. The aver-
aging window is a rolling average, with the screen retaining a 5 rdg/s update rate.
There are several purposes of the averaging window:
D
Selecting how much smoothing is applied to the measurement without altering
the measurement update rate.
D
Adjusting the accuracy of the AC and DC components of a measurement in AC
D
Setting the measurement buffer interval when using the streaming data buffer
feature over SCPI (section 3.5.3).
The fundamental measurement for the teslameter is 10 ms, with all averaging win-
dows being an average of a certain number of these 10 ms measurement steps. For
example, the 200 ms window averages the previous 20 measurement samples. The
rolling average updates with each 10 ms measurement regardless of the window. For
example, a 10 s averaging window could be queried once every second and each
returned value would be an average of the previous 10 s.
FIGURE 3-4
High-frequency mode instrument frequency response
Gain (dB)
Frequency (Hz)
-6
-5
-4
-3
-2
-1
0
1
10
100
1000
10000
100000
