Printing 
History 
This manual's printing 
date 
and 
part 
number show 
its 
current edition. 
The 
printing 
date 
will change when a new edition gets printed.  Minor changes 
may 
be made 
at 
reprint without changing 
the 
printing date. 
The 
manual 
part 
number will change when extensive changes occur. 
Manual updates may be issued between editions 
to 
correct errors 
or 
document 
product changes.  To ensure 
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you receive these updates or new editions, 
you should subscribe 
to 
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appropriate product support service.  See your 
Hewlett-
Packard Sales Representative for  details. 
October, 1991  Edition 1 
Safety and Information 
Symbols 
and 
Conventions 
The 
following  conventions are used throughout this manual: 
SKIP? 
Note 
Caution 
Warning 
iv 
SKIP messages in configuration procedures tell you 
that 
you 
can skip some information 
if 
conditions permit. 
Notes contain 
important 
information set off from 
the 
text. 
Caution messages indicate procedures which, 
if 
not observed, 
could result in damage 
to 
equiprnent.  Do 
not 
proceed beyond 
a 
CAUTION sign until 
the 
indicated conditions are fully 
understood 
and 
met. 
Warning 
messages 
indicate 
procedures 
or 
practices 
which, 
if 
not 
observed, 
could 
result 
in 
personal 
injury. 
Do 
not 
proceed 
beyond 
a 
WARNING 
sign 
until 
the 
indicated 
conditions 
are 
fully 
understood 
and 
met.