Emission measurements in any environment according to the reference principle
Emissions can also be measured easily with this method in non-standard
environments. Almost any free field and building can be used. Such an EMC
environment can be implemented easily and inexpensively. Setting up a standard-
compliant OATS (open area test site) or an anechoic chamber, would not only take
much more time, but would also entail considerably higher investments. In practice,
reference measurements have proven to be a very fast, meaningful method of
measuring. A high degree of accuracy can be achieved providing some simple
basic rules relating to the measuring setup are obeyed. The measured results
relate to the calibrated reference.

Fast checking of measuring accuracy of standard OATS (open area test site)
and alternative measurement stations
Calibration of a measuring station is the basic for accreditation. This is a technically
sophisticated, time-consuming process which is therefore very expensive. To keep
this state for a long term, functionality must be ensured by regularly inspecting the
various objects in the setup. Serious damage to antennas, coax cables and the like
can be recognized, for example, by a considerable reduction in levels. It is well
known that, despite great care in these issues, there can be extreme variations in
measurements ( in a pooled test, the measured values ranged from +/- 12 dB).
The easiest way of checking this is to use the comparative radiation source RSQ-
3200. The RSQ-3200 constantly radiates a variety of individual frequencies within
a selectable range of frequencies. Since the level of each of these frequencies
was determined precisely in the course of standard calibration, differences
compared with the original calibration can be recognized after one measurement
operation with the RSQ-3200 as the test object by comparing target and actual data.