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SECTION 17
ALTERNATE HOST
CONSIDERATIONS
General Information
Many types of devices can be attached to the alternate host port of the
ULTRA. Alternate hosts may include PCs, minicomputers such as a DEC
VAX or a Burroughs, network servers, print-sharing devices and even other
protocol converters. This section discusses how to ensure compatibility
between the alternate host, coax host and the printer.
Activating the Alternate Host Port
The alternate host port is disabled by default. To activate the alternate host
port, Option #50 must be configured by the user. Refer to Section 5
Configuration Options. The choices for Option #50 are (A) OFF, (B) Both
parallel and serial alternate hosts, (C) Serial alternate host and (D) Parallel
alternate host. Make the appropriate choice, referring for instructions to
Section 8 Front Panel Configuration or Section 9 Coax Host
Configuration.
Configuring the Alternate Host Port
The dip switches on the ULTRA back panel are also used to configure the
unit for an alternate host. The dip switch default settings (all switches in the
OFF/up position) are appropriate for a parallel alternate host.
If using a serial alternate host, the settings of dip switch Bank B must be
changed. Refer to Section 3 Dip Switch Settings for information on the
appropriate configuration.
Note: Users with both parallel and serial alternate hosts will have to
change the dip switch settings and press the RESET button on the ULTRA
front panel when switching between parallel and serial alternate hosts. To
connect both parallel and serial alternate hosts also requires the use of
AGILEs special Y alternate host adapter.