NARDA SRM-3006 Manual - Level Recorder Scope
10
WHO? WHAT?
SRM FOR DETAILS
Broadcasting, mobile telephony, industrial equipment:
What proportion of the overall field is from which
source? The answer is of interest to the relevant authori-
ties and safety representatives as well as to the opera-
tors themselves. There is often a need to know what
field strength is emanating from which equipment,
which channel or which radio cell. This determines who
must reduce output power in the event that the limit
values are exceeded, for example. On the other hand,
the overall field strength is more important when it
comes to human safety and environmental protection.
The Selective Radiation Meter SRM is perfect for
such investi gations, thanks to its application-oriented
operating modes. For example: ‘Safety Evaluation’
with automatic evaluation of individual services such
as analog TV, digital radio (DVB-T, DAB), mobiles (GSM,
UMTS, LTE), and wireless (WLAN, WiMAX), as well as a
summary of the results in the form of an overall value.
Or ‘Level Recorder’ mode, which can even record pulsed
radar signals as numerical values. Or ‘Scope’ mode,
which displays the variation of the field over time.
Even the resolution bandwidths are tailored to the
applications. Using these settings, the SRM can select
out a single narrow GSM channel or capture an entire
broad DVB-T channel.
SPECTRUM ANALYSIS SAFETY EVALUATION UMTS DEMODULATION LTE MODE
Overview with ‘Safety Evaluation’: The
services to be checked are recorded in
editable tables. There’s no complicated
evaluation needed in ‘Safety Evaluation’
mode: The numerical result shows the
individual contributions of the services
as well as the overall level in terms of
the permitted limit value.
Classical spectrum analysis: Result
evaluation using markers and delta
markers. The integration function can
be used to determine the channel
power level, for example. Special
feature: Service identification by
means of pre-recorded service tables.