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System Units
1.1 Introduction
The basic system consists of four units: The Below Deck Unit (BDU), The
Control Handset, The Cradle and The Above Deck Unit (ADU).
1.2 Below Deck Unit – BDU
The Below Deck Unit (BDU) – which contains the primary electronic parts – is
designed for wall or desktop installation. The BDU supplies 42 VDC to the ADU
through a single coaxial cable. The F55/F77 BDU power requirement is
240/200 W peak and 180/150 W average at 24 VDC. The power shall be
provided by the ship hot 24 VDC power bus, or by an external VAC to VDC
power supply (minimum 10A). Be aware of high start-up peak current.
16 A@24 V, 15 ms.
Chapter 1
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Troubleshooting
