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User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch
Next, connect the grounding terminal (see
labeled GROUND to the main grounding plate of the radio station (see Point
After connecting the grounding terminal, connect the antenna feeders (up to 4 coaxial cables) to the
respective connectors (see
ANTENNA 4 on the tuner.
Verify that the amplifier 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!
Without powering up the amplifier, use a coaxial cable to connect the tuner input (see
view with
connectors, Pos. 3) labeled 50Ω RF +26 VDC POWER & CONTROL to the ACOM transistor
amplifier's output labeled RF OUTPUT.
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.
2.5. Grounding, Additional Information
Ground the tuner and install the cables from the antennas and from the tuner obeying safety requirements
in Section
1.6 Safety Considerations, Explicit Definitions
grounding according to its function!
2.5.1. Lightning Protection Grounding
See the instructions provided in Section
APPENDIX 1 | Lightning Protection
and equipment, but does not protect you from voltages or currents with AC mains frequency or
emitted/induced RF signals.
2.5.2. Grounding for Protection from Electric Shock
This grounding (or neutralizing in some cases) is used for protection from electric shock from currents with
AC mains frequency. It will not protect you from a possible lightning or emitted/induced RF signals.
October 2022
Figure 2-4 | Tuner rear
Figure 2-4 | Tuner rear
DANGER
1.6 Safety Considerations, Explicit Definitions
. This kind of grounding is used for lightning protection of people, buildings
view with
connectors, Pos. 1) of the tuner
9)
view with
connectors, Pos. 2) ANTENNA 1 through
. You need to distinguish between different kinds of
S e c t i o n INSTALLATION | Page 23 of 70
in Appendix 1).
Figure 2-4 | Tuner rear
and in
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