DEC VT220 User manual

EK-VT220-TM-001
VT220
Technical Manual
Prepared by Educational Services
of
Digital Equipment Corporation

1st Edition, November 1984
copyright 0 1984 by Digital Equipment Corporation
All Rights Reserved
Printed in U.S.A.
The reproduction of this material, in part or whole, is strictly
prohibited. For copy information, contact the Educational Services
Department, Digital Equipment Corporation, Maynard, Massachusetts
CH754.
The information in this document is subject to change without
notice. Digital Equipment Corporation assumes no responsibility
for any errors that may appear in this document.
The following are trademarks of Digital Equipment Corporation,
Maynard, Massachusetts.
mamaoma
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DECnet
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DECSYSTEM-20
DECUS
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DIGITAL
LA
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PDP
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Work P.rocessor

This equipment has been ertified to comply with the limits for a
Class B computing device, pursuant to Subpart J of Part 15 of FCC
Rules. Only peripherals (computer input/output devices, terminals,
printers, etc.) certified to comply with the Class B limits may be
attached to this computer. Operation with noncertified peri erals
is likely to result in interference to radio and television
reception. It has been type tested and found to camp y with the
limits for a Class B computing device in accordance with the
specifications in Subpart J of part 15 of FCC Rules, whic are
designed to provide reas nable protection against Gch
interference in a residential installation. Howev r, ther is no
guarantee that interference will not occur in a particular
installation. If this equipment does cause interference to radio
or television reception, which can be determined turning the
equipment off and on, the user is encouraged to try to correct the
difference by one or more of the fa] owing measur
reorient the r eiving antenna
relocate the comput r with respect to th v r
move the computer away rom the receiv r
plug the computer int a different outlet so that omputer
and receiver ar on different branch circuit .
If necessary, the user should consult the d aler or an experienced
radio/television technician for additional suggestions. The user
may find the following booklet prepared by the Federal
Communications Commission helpful:
"How to Identify and Resolve Radio-TV Interference Problems".
This booklet is available from
Washington, DC 20402, Stock No.
the US Government
4- -v10 45 4.
Printing Officp,