Measurement Accuracy - Gigahertz Solutions FF10 Bedienungsanleitung

FF10
How to Select a Band Filter
Specific filters can be selected by tapping the touch switch at
the front panel of the Frequency Filter.
The power supply through the HF-Analyser is designed to feed
one filter at the time. For short periods of time the external power
supply can feed more filters (caution: this may cause the filter to
get hot). Even when using single filters the device may get luke-
warm, which is harmless.
Please note that technically it makes no sense to use the
"broadband" and "LP 480 MHz" filter simultaneously or together
with any other filter.
How to Measure with the Filter
To assess the total exposure in a given space within a specific
band of the Frequency Filter, tap the touch switch of the desired
frequency band and follow the general instructions in the user
guide of your HF-Analyser.
To measure the emission of a single RF source, preferably use
a logarithmic-periodic directional antenna and select "Peak
Hold," while slightly panning the antenna toward the general di-
rection of the RF source for at least several seconds to capture a
reasonable test result. In the case of RF signals with a high crest
factor, we recommend using a considerably longer measurement
period.

Measurement Accuracy

Typical suppression of unwanted frequencies: min. 40-60 dB.
Exception: GSM/LTE1800 – Here the selectivity vs. DECT is bet-
ter than 20-30 dB.
No insertion loss in the pass band!
Max. additional measurement error: 0 to +3 dB.
The correction factors specified for the respective meters also
apply to the filter for certain signals (e.g. UMTS or LTE).
10
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