1 Introduction
2 SRM-3006 Narda
1.1 About this device
The SRM-3006 (Selective Radiation Meter) is a handy-sized frequency-
selective measuring system for safety analysis and environmental
measurements in high frequency electromagnetic fields in the frequency
range from 9 kHz to 6 GHz. Because signals with frequencies of this
magnitude are very difficult to sample digitally, the SRM-3006 uses a
combination of analog and digital signal processing. It is ideal for measuring
absolute and limit values of high-frequency electromagnetic fields such as
those due to broadcast radio (AM, FM), TV (analog, DVB-T), BOS (Tetra),
mobile telecommunications (GSM, UMTS), radar, and wireless
communications (WiMax, WLAN).
In unknown field environments such as those around so-called shared sites,
where several providers of mobile telephone services share a common
antenna site, the SRM-3006 displays the total field level as well as the
contributions made by the individual services, either as absolute values or
as a percentage of the permitted limit level. Each service can be resolved
down to its individual channels and the contribution made by each channel
to the overall field emission measured using the SRM-3006. In the same
way, the value can be integrated over the frequency band of the service and
the total value displayed, again as an absolute value or in terms of the
relevant limit value. The SRM-3006 naturally also includes all the typical
functions of a spectrum analyzer and as such can be universally applied. An
added bonus is the high measurement speed at small resolution bandwidths
(RBW).
The device combines a very wide and varied range of functions within an
extremely lightweight and handy design. This makes it possible to use the
device particularly under the kind of conditions where good mobility and
ruggedness are required.
The complete SRM-3006 measuring system comprises the Basic Unit
SRM-3006 and the three axis antenna. Narda Safety Test Solutions also
supplies other antennas for the Basic unit, including single axis antennas,
covering various applications and frequency ranges. All Narda antennas
can be mounted directly on the Basic Unit or connected to it using a special
RF cable.
Other commercially available antennas can be connected to the SRM-3006
by cables; these cables can also be of types other than those supplied by
Narda.
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