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HP MSM422 802.11n - Installation Warnings and Prerequisites

HP MSM422 802.11n
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Radio and antenna
The AP has two radios. The lower flap contains three antennas (MIMO) for Radio 1, which by
default is set to 802.11n (5 GHz) mode. The upper flap contains two antennas for Radio 2, which
by default is set to 802.11b/g mode. Optional external antennas are available from HP.
Radio mode
External connectorAntenna flapRadio
Other choicesDefault
n (5 GHz), n (2.4
GHz), n/a, n/g,
n/b/g, b, b/g, g, a
n/a (5 GHz)A, B, CLower1
b, g, a, a turbob/gDUpper2
For 802.11n on Radio 1, always install three antennas (MIMO) on the Radio 1 antenna connectors
(A, B, C).
Reset button
Press and quickly release the button to reset the AP.
To reset the AP to factory defaults, press the button until the status lights blink three times, then
release. Following a reset to factory defaults, the AP starts up in controlled mode with a an
option to switch it to autonomous mode.
Important information to read before installing
For indoor installation only.
Professional installation required
WARNING! Prior to installing or using the AP, consult with a professional installer trained in RF
installation and knowledgeable in local regulations including building and wiring codes, safety,
channel, power, indoor/outdoor restrictions, and license requirements for the intended country. It
is the responsibility of the end user to ensure that installation and use comply with local safety and
radio regulations.
Surge protection and grounding
WARNING! If you plan on connecting an outdoor antenna to the AP, make sure that proper
lightning surge protection and grounding precautions are taken according to local electrical code.
Failure to do so may result in personal injury, fire, equipment damage, or a voided warranty. The
HP hardware warranty provides no protection against damage caused by static discharge or a
lightning strike.
Cabling
You must use the appropriate cables, and where applicable, surge protection, for your given
region. For compliance with EN55022 Class-B emissions requirements, use shielded Ethernet
cables. Cat 5e (or better) cabling is required.
Plenum installation
The AP can be installed in a plenum (UL2043 rating). The AP is suitable for use in environmental
air space in accordance with Section 300-22(C) of the National Electrical Code, and Sections
2-128, 12-010(3) and 12-100 of the Canadian Electrical Code, Part 1, CSA C22.1.
8 Preparing for installation

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