Getting Started; Turning On And Off - Acom Owner's Manual

User's Manual | ACOM 04AT | Remote Automatic Antenna Tuner and Switch

3. GETTING STARTED

Never exceed tuner specifications! Do not transmit with a high SWR!

3.1. Turning ON and OFF

After you complete the tuner installation instructions (see Section
master power ON/OFF switch on the back panel is in the OFF position, and the plug is pulled out of the mains
socket.
Before connecting the coaxial cable from the tuner to the amplifier output, make sure
that the cable and amplifier are securely grounded to the grounding system of the radio
station. Using a voltmeter, check the cable coming from the tuner to verify there is no AC
or DC voltage above 12 V from the pin and the ring of the cable connector to the grounding
terminal of the amplifier and between the connector pin and ring!
Connect the tuner coaxial cable to the RF OUTPUT of the amplifier. Besides RF power, the tuner will be
supplied with DC power from the amplifier (+26 VDC with consumption up to 25 W), and bidirectional control
data (60 kHz FSK), all combined on the same cable.
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 (see Section
4.2 Tuner Assignment and Unassignment
The amplifier will assign the connected tuner and will then start taking care of its control 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 installed 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 menu
again and select:
May 2021
NOTICE
DANGER
) and select:
ANTENNA TUNER / SWITCH INSTALLED: [YES].
ANTENNA TUNER / SWITCH INSTALLED: [NO].
), verify that the amplifier
2 INSTALLATION
S e c t i o n GETTING STARTED | Page 31 of 72