Functions - Acom 04AT Operating Manual

8.2. FUNCTIONS

8.2.1 PROCESS OF MATCHING OF ANTENNA IMPEDANCE
Fully automated.
8.2.2 MODES OF TUNING
Two modes: full (basic cycle of user tuning) and quick (restoring preset full tune set-
tings from the non-volatile memory).
8.2.3 MEMORY FOR THE USER TUNE SETTINGS
Integrated non-volatile memory, separate for all four antenna-selectivity types and out-
puts.
8.2.4 TYPES OF ANTENNA SELECTIVITY / BANDWIDTH
For fitting the width of frequency segments to the natural bandwidth of antennas, four
antenna selectivity types can be declared:
– Sharp (narrow bandwidth): the width of frequency segments is approximately
0.25% of the central frequency of the band;
– Regular – used by default; the width of frequency segments is approximately
1% of the central frequency of the band;
– Wide (wide/broad-band): the width of frequency segments is approximately
4% of the central frequency of the band;
– Fixed – for the tuning to be valid, it requires coincidence of the operating fre-
quency with tolerance +/-4 kHz to the stored value.
8.2.5 BYPASS AND USE ATU MODES
In BYPASS mode all components of the matching network are excluded, allowing di-
rect operation of broadband antennas. The normal mode is USE ATU.
8.2.6 OVERVIEW OF TUNING SETTINGS
Method for overview of all tuning settings is provided. Also, provided is method for de-
letion of individual or all tuning settings.
8.2.7 EVALUATION OF THE RESOURCE USED
Provided is a method for evaluation of resource of inductors and capacitors used for
each stored user tuning.
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