We understand, your confusion regarding the possibility to measure above 300 V/m when you are using the AR FM5004 unit.
In our RadiMation device driver for the Amplifier Research FM 5004, we do provide you with the possibility to select an appropiate 'Range Mode'.
- FM5004ConfigurationDialog.png (9.53 KiB) Viewed 4683 times
The highest range is range 4, which seems to be limited to 100 - 300 V/m. Your question if values above 300 V/m can be measured is indeed understandable, as based on the content of the dialog it seems that the maximum measured voltage is 300 V/m.
We investigated this question, and reviewed the manual of the HI-4433-STE. (available at:
http://www.ets-lindgren.com/sites/etsau ... ev%20L.pdf).
In the manual it can be seen that there are several HI-4433 probes with different range specifications.
- HI-4433Specifications.png (71.63 KiB) Viewed 4683 times
All of these HI-4433 probes have 4 ranges, but the limitations of the probe ranges is different for each probe model.
The allowed ranges that are specified for the HI-4433-GRE are used for the design of the configuration dialog. The values that are given in the FM5004 dialog should thus only be used as an indication for a HI-4433-GRE field probe for other field probes the corresponding values as they are specified in the manual should be used.
Thus when you are using the HI-4433-STE, 'Range 3' will be using the third range of the HI-4433-STE, which goes up to 1000 V/m.
We also checked the remote control of the FM 5004, and I can confirm that the device driver doesn't do a real modification of the measured value, or any mapping from the range to the allowed fieldstrength range.
I do expect that when you select 'Range 3' in the RadiMation configuration dialog of the FM5004, you will be able to measure the desired 600 V/m fieldstrength. For now, just ignore the values that are shown in the dialog, as those value are only applicable for the HI-4433-GRE.
I hope that this answers your question, otherwise please let us know.