Data General AViiON 5500 Series, Установка, расширение и обслуживание

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Connecting an AV/Alert modem (AViiON 5500) and other asynchronous serial devices
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4. Configure your device to select appropriate operating
characteristics, as described in documentation that came with the
device.
Initially, both your firmware and the DG/UX operating system
require that the devices connected to the asynchronous ports have
the following characteristics (applied to all three asynchronous
ports prior to shipment):
2400 baud
8 data bits
No parity
IMPORTANT: If you need to change the default characteristics, refer to the
manual Operating AViiON 5500 and 550 Series Systems for
information about using SCM configuration menus. SCM menus
refer to the
OP CON port ( RS-232–A– ) as the “console port” and to
the SERVICE port ( RS-232–B– )as the “modem port.” You cannot
configure the third RS–232 port (labeled RS-232–C– ) within the
SCM; for information on defining characteristics for port
RS–232–C–, refer to Customizing the DG/UX

Operating System.
Do not change the default SERVICE port characteristics for
AV/Alert use.