System/370 Channel Attachment
Note: System/370 channel attachment is available for 3160-001 and InfoPrint 60.
A System/370 Parallel Channel can be configured to use either DC Interlock
(double-tag) mode, or Data-Streaming mode.
You can configure data streaming mode for one of the following transfer rates:
1.9 MB per second
2.7 MB per second
3.4 MB per second
4.5 MB per second
The highest data-streaming mode rate supported on the attaching host system is
the recommended transfer mode; use it if possible.
When connecting to a System/370 channel, locate the printer a maximum distance
of 122 meters (400 feet) from the channel if it is the only control unit on the
interface. For each additional control unit ahead of the printer on the channel, the
maximum distance is reduced by 4.57 meters (15 feet).
You can connect the printer to the remote end of either an IBM 3044-II Fiber Optic
Channel Extender (RPQ approval required), or an IBM 9034 ESCON Converter to
extend the maximum channel length by up to 3 kilometers (1.875 miles).
Note: Connection through a 3044-II is limited to the IBM ES/4381, IBM 308X, IBM
ES/3090, and IBM ES/9000 processing systems only.
Also, you can use the IBM 9034 with either an IBM 9032 or 9033 ESCON Director
to further extend the maximum channel length by up to 6 kilometers (3.750 miles)
with one 9032/9033 in static connection mode (with RPQ approval), or by up to 9
kilometers (5.625 miles) with two 9032/9033 in static connection mode (with RPQ
approval).
Also, you can use the Extended Distance Feature (XDF) on the 9032/9033 ESCON
Directors to increase the distance. Contact your IBM Marketing Representative for
information about ordering cables.
Appendix B. Software and Hardware Requirements
65
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