Indication, Controls And Menus - Acom 04AT Operating Manual

The tuner is turned on together with the amplifier. Connect the power cable of the
amplifier to the wall mains socket and turn it on from the front panel. To access and
operate the menus related to the tuner, you should explicitly specify that it has been
installed. To do that, enter the USER PREFERENCES menu (S. 4.2) and select:
ANTENNA TUNER / SWITCH INSTALLED: [YES].
The amplifier will assign the connected tuner and will then start taking care of its con-
trol and indications. At the assignment and at any subsequent turning on, the tuner will
perform a quick tuning to retrieve from its memory the last saved tuning for the current
frequency of the amplifier.
The tuner is also turned off together with the amplifier. Thus the four antennas are
automatically turned off and grounded. There is no need to assign the tuner from the
menu at any subsequent powering on/off. The amplifier will remember the tuner is in-
stalled and will continue to take care of it.
If, for any reason, you decide to operate the amplifier without the tuner, enter the USER
PREFERENCES again and select:
ANTENNA TUNER / SWITCH INSTALLED: [NO].
After unassigning the tuner, you will have to connect a matched antenna operating at
the respective frequencies to the amplifier output. Also, when the tuner is unassigned,
you will not be able to use its antenna switch.

3.2 INDICATION, CONTROLS AND MENUS

3.2.1 TUNER INFORMATION AREA ON THE AMPLIFIER SCREEN
After the operator specifies in the USER PREFERENCES that a tuner is installed, the
amplifier indication changes:
– The screen displays a frequency range showing the availability or absence of tuner
settings for all frequency segments in the current band, to which the amplifier is tuned.
The light gray segments have a user tuning stored in the tuner memory, and the black
segments do not have one. The current operating segment, which contains the work-
ing frequency of the transceiver, is enclosed in a thin orange frame, which moves as
the transceiver frequency moves from segment to segment.
– The numerical values displayed above the frequency range now show the bound-
aries of the current operating frequency segment (rather than of the entire band, if
no tuner is present); in front of the values, there is a label reading "ATU Matched",
"Memory Settings" or "ATU in Bypass", according to the tuner mode at that time; after
the values are displayed the number, the selectivity type and the name of the currently
connected antenna (see the Antenna Assignments menu, S. 6.1). For example, "A2R",
indicates the antenna nr. 2 with Regular degree of selectivity is selected. The antenna
number may be from 1 to 4 and each antenna may have different type, specified by the
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