SAF Spectrum Compact, Step-By-Step Manual, Page: 48 / 54

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12. Examine the displayed frequency range — there should be no signals
within your desired channel width.
13. Tap SAVE for further analysis and future reference.
Note : It is advised to determine the time when the fluctuations happen and
investigate at that time of the day, week etc.
Multipath detection
1. Investigation should be done at antenna radio port.
2. Remove the radio from the antenna.
3. Connect Spectrum Compact to the antenna. Use appropriate attenuation!
(see: General instructions)
4. Turn on Spectrum Compact.
5. Tap SPAN, then FULL SPAN.
6. Check for OVERLOAD:
a) If there is an indication above the graph, remove Spectrum Compact
from the antenna and add attenuators.
b) If there is no indication above the graph, proceed with the next steps.
7. Tap FREQUENCY, then CENTRE and using the keypad select the frequency
equal to the centre frequency set on the transmitter (in MHz). Tap ENTER,
then HOME.
8. Tap SPAN, then MIN SPAN. Tap HOME.
Note : for wider radio channel bandwidths (80 MHz and up), tap SPAN and using
the keypad select a wider span e.g. 120. Tap ENTER. Tap HOME.
9. Tap TRACE MODE, then CUMULATIVE. Tap HOME.