Narda FieldMan 99
10.1.3 Display in % of standard
Set the reference frequency:
1. Select Reference Frequency.
↳ A list opens with the calibration frequencies stored in the probe. The last selected
value is automatically highlighted.
2. If necessary, select another value from the list.
In addition to the values from the list, any intermediate value can be set with a resolution
of 1 kHz.
Set any value:
1. After selecting Reference Frequency, press the SK1 softkey.
2. Set the digit and value with the cross key.
3. Press SK4 to transfer the new value to the selection list.
↳ The pen symbol indicates a frequency where calibration has not been performed
and where the calibration factor is determined by interpolation. There can
be only
one entry with pen symbol at a time. This remains in the list until another fre-
quency value is selected and is then deleted again.
HF probes are broadband probes and cannot measure selectively at the set frequency.
In the case of incorrect frequency specification or multifrequency fields, these settings
can therefore lead to incorrect results.
Non-evaluating probes measure the field strength. The % of Standard unit is only avail-
able for selection for these probes if the conversion for a specific personal protection
standard h
as been activated in the menu. The measured value display in % is related to
the power density and not to the field strength.
Activate conversion:
✓ DEVICE SETTINGS > EXPERT SETTINGS
1. Select Standard.
2. Reference frequency of the field (Reference Frequency) indicated.
3. Activate % of Standard: Select Lowest Limit or Reference Frequency.
The reference to the lowest limit value of a standard (Lowest Limit) is recommended
when the frequency of the field source is not known.
The Lowest Limit setting is not available if the use of the correction factor is switched
on.
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