The Function Setup menu allows to specify a function. This function can then be assigned to a marker. Additional functions will be provided with upcoming firmware updates.
Noise Marker |
Setting the noise marker parameters: • Auto NBW: Switching automatic noise bandwidth On / Off. • NBW: Setting the noise bandwidth. |
Channel Power |
Setting the channel power parameter: • CBW: Setting the channel bandwidth. |
Occupied bandwidth |
Setting the occupied bandwidth: • Mode: Select % or x dB • Percent: Enter percentage value if % is selected as mode • x dB: Enter dB value if x dB is selected as mode • Threshold: Enter threshold • Ntrials: Enter number of trials |
About occupied bandwidth According to RR No. 1.153 and Recommendation ITU-R SM.328 occupied bandwidth is defined as "...the width of a frequency band such that, below the lower and above the upper frequency limits, the mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission. Unless otherwise specified in an ITU-R Recommendation for the appropriate class of emission, the value of β/2 should be taken as 0.5%."
Following settings are recommended: • Mode: % (default) • Percent: 99% • x dB: - • Threshold: should be set slightly above the noise level • Ntrials: 400 (ITU recommendation)
Recommendations for setting the spectrum analyzer (e.g. RBW) can be found in R-REC-SM.443-4. |