How To Measure And Data-Log - Gigahertz Solutions NFA 30M Operating Manual

Made in Germany

5 How to Measure and Data-Log

5.1 "Live"-Measurement
You have the choice of two basic measurement modes: You can either
apply the conventional method which involves simply switching the unit
on and reading the display.
Or you prefer to have the measurement values of all four channels
(those of the three field axis plus one further measured variable) logged
onto the SD-card. To activate this function, please switch the Power-
button to "Log" for a short time until the status-LED turns green. Then
switch it back to "On".
5.2 Long Term Data Logging
The interval for recording data is set to 10 full data sets/sec.
Initiating Long Term Logging of the Meter
For a long-term recording of several hours or days, set the "Power"
switch to "Log". The status LED will turn green and long-term recording
will start off after a few seconds. In this mode the LEDs are turned off
to extend the battery life, after a while also the green status LED. Even
if you only want to document a short measurement, please wait for the
green status-LED to go out before turning off the NFA, because only
then you can be sure that data has been recorded.
The display will show the log file number ("L..."), the elapsed time of re-
cording as well as the remaining time of use in an infinite loop until the
battery is empty or the SD-card full. For information on the display for-
mat please see chapter 3.1. When switching back to "On", recording
will be continued without interruption.
If an HF-Analyser is connected to the AC/DC socket, it will automati-
cally record the output of this external device in
addition the magnetic field.
"Locking" of the Instrument
"Locking" ensures that the instrument exclusively executes the prede-
fined tasks when left at the customer's place for long-term recordings.
To lock, remove and lock the SD memory card while the desired set-
tings are active and reinsert it. The data will still be recorded.
IMPORTANT: Don't forget to "unlock" the SD memory card after
finishing a "locked" long term recording!
April 2020
- 6 -
© Gigahertz Solutions GmbH