10-10
Reference
Information
Portable
PLUS
Computer
10.4
Service
References
The following references provide additional information about the Portable PLUS
and
about compo-
nents used
in
it.
Hewlett-Packard Company. HP
Portable
PLUS
Owner's
Manual.
HP reorder number 45711-90002,
<rl1985.
Hewlett-Packard Company.
Portable
PLUS
Technical
Reference
Manual,
model HP 45559K,
<rl1985.
Intel Corporation.
Microsystem
Components
Handbook,
Volume I.
<D1984.
Kane, Gerry, et al.
The
HP-IL
System:
An
Introductory
Guide
to
the
Hewlett-Packard
Interface
LOop.
Osborne/Mc
Graw-Hill, Berkeley, California,
<rl1982.
MaNamara, John
E.
Technical
Aspects
of
Data
Communication.
Digital Equipment Corporation, Bedford,
Massachusetts,
<rl1977:
10.5
Service
Equipment
10.5.1
RS·232·C Test Connector
Figure 10-1 shows the wiring for the RS-232-C test connector.
(Back
side
of
connector)
Figure 10-1. RS-232-C Connector Wiring Diagram
10.5.2
SNALink/3270 Test Board
The SNALink/3270 test board (part number 82986-60902) provides two RS-232 clock signals (TxDCE
and
RxDCE)
to the SNALink/3270 software drawer. The test board receives its power from
an
exter-
nal + 5V power supply.
Table
10-3 lists replaceable parts for the test board. Figure 10-5 shows the schematic diagram for the
test board.
n
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