7 Safety Evaluation Mode
Narda SRM-3006 95
Using the operating mode
First select from the Configuration menu the services you want to record
and the standard according to which they are to be assessed. The
frequency tables and weighting factors for the most common services and
standards are recorded and stored in the instrument as supplied from the
factory. These tables can be edited or new ones created using the PC
software: Simply assign a name to the service, enter the lower and upper
frequency limits, and upload the data to the instrument via the serial
interface.
Now you only have to press a button to run the measurement. The
SRM-3006 measures the bands corresponding to the services one after the
other and also captures what is happening between the bands. It
automatically sets the resolution bandwidth so that four spectral lines can
still be detected in the narrowest band. In this way, the SRM-3006 achieves
a high degree of measurement accuracy without wasting time.
None of this is visible, as you don’t have to do anything about it. The only
thing you will see is the result, the field strength proportions due to individual
services (such as GSM and UMTS), the proportions due to the frequencies
between services (Others), and the total field exposure level (Total). The
SRM-3006 automatically integrates all the corresponding spectral lines for
this purpose.
As a rule, the measurement service requires the result in terms of a
percentage of the permitted limit value. To do this, the SRM-3006
automatically evaluates each individual spectral line according to the
specified standard or regulation. If you want absolute values, however,
simply switch to display field strength (V/m) or power density (W/m
2
). The
standard weighting is not then taken into account.
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