Safety Requirements And Definitions - Acom 04AT Operating Manual

Export (backup) of preset memory to a computer file, import of previously
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made backup files from a computer to the tuner memory.
Information about the setting age, and alerts for settings that reach a certain
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age, defined by the operator in 4 possible age levels.
Power supply and control to the tuner, as well as status return from the tuner
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are facilitated over the coaxial cable between the amplifier and tuner, no need for ad-
ditional cables or special control signals from the transceiver (the availability of CAT
control from the transceiver will give further advantages to the setup).
Improved electromagnetic compatibility: full tuning can be completed within
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5s (typically 2-3s), at 25W at the tuner input and less than 6W at the antenna output;
quick tuning (from nonvolatile-memory presets) is completed in less than 0.05s with
zero emitted signals.
Input SWR during full tuning cycles: below 2:1, preventing activation of trans-
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ceiver PA protection.
Input SWR after completing a tuning cycle – below 1.5:1 (typically below
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1.3:1).
Relays with gold-plated contacts for excellent receive characteristics.
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Relay switching will only take place when no RF current is flowing, prevent-
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ing contact arcing critical for preventing contact oxidation, surface melting and ma-
terial transfer (otherwise resulting in poor receiving performance) and to avoid any
unwanted widening of the spectrum of signals, emitted during the tuning cycle.
Air-core coils (no magnetic materials) and high-quality NP0 (C0G) ceramic
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capacitors usage throughout the matching circuit.
Improves harmonic suppression – the matching network is a low-pass L filter.
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• Saves space on the operating position - can be located up to 100m (330ft)
away from the shack.
• Allows remote installation, including outdoors, close to the antenna feed-
point, minimizing losses.
• Integrated four-way antenna switch – less coaxial cable, shorter unmatched
sections, less losses.
• Antennas can be automatically and manually switched from the amplifier
front panel. The last used antenna selection is memorized.
Indication and editing of names and types of antennas in editable freeform.
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Various protection mechanisms, including: antenna overvoltage, antenna
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overcurrent, excessive power during operation and tuning, extreme temperatures and
power supply voltages, as well as relay hot-switching.
Safe power supply voltage (26VDC).
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Bypass mode – all components of the matching network are excluded, allow-
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ing direct operation of broadband antennas.
Service menu, allowing analysis of the tuner status and review of the used
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resource of coils and capacitors for all memorized and current tuning presets.
Integrated lightning arrestor and bleeder resistor for protection against static
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discharges; automatic grounding of antennas on powering down.

1.5. SAFETY REQUIREMENTS AND DEFINITIONS

The ACOM 04AT has been designed to comply with the international safety standards
and to comply with safety and electromagnetic compatibility regulations of the FCC
and European Union.
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