Juniper M320 Hardware Manual page 2

Juniper Networks, Inc.
1194 North Mathilda Avenue
Sunnyvale, California 94089
USA
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www.juniper.net
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M320 Core Router Hardware Guide
Copyright © 2010, Juniper Networks, Inc.
All rights reserved. Printed in USA.
Writing: Elizabeth Gardner, Jerry Isaac, Sheila Nolte
Editing: Fran Mues
Illustration: Faith Bradford Brown
Cover Design: Edmonds Design
Revision History
October 2010—Updated AC power cords. Minor corrections.
August 2010— Corporate rebranding.
May 2010— Corrected the number of power supplies in the base system.
September 2009— Added related topics.
18 April 2008— 530-021109-01 Revision 2. Revised sections into modular topics for easier customer access.
29 June 2007— 530-021109-01 Revision 1. Added Enhanced III FPCs. Updated the DC input voltage operating range.
30 March 2007— 530-017396-01 Revision 2. Added RJ-48 pinouts for the Control Board external clock inputs. Corrected the AC power
plugs. Updated the mounting hardware procedures. Updated the rack and clearance requirements.
20 October 2006— 530-017396-01 Revision 1. Combined power supply and power system electrical specifications. Added European
Community EMC Declaration of Conformity.
28 June 2006—530-015181-01 Revision 4. Updated torque specification range for tightening nuts to the DC power supply terminal studs.
30 May 2006—530-015181-01 Revision 3. Added power cable warning in Japanese. Added lithium battery statement.
13 April 2006—530-015181-01 Revision 2. Deleted cautions that stated the power supplies must remain in the chassis for proper airflow.
Added torque specification range for tightening nuts to the DC power supply terminal studs. Updated Junos OS Release recommendation
for graceful switchover.
9 January 2006—530-015181-01 Revision 1. Added Enhanced II FPCs.
ii Copyright © 2010, Juniper Networks, Inc.