Chapter 2. Installation
61200305L1-1 ATLAS 550 User Manual 2-3
SUPPLYING POWER TO THE UNIT
The AC powered ATLAS 550 comes equipped with a detachable 8-foot pow-
er cord with a 3-prong plug for connecting to a grounded power receptacle.
As shipped, the ATLAS 550 is set to factory default conditions. After install-
ing the Base Unit and any option modules, the ATLAS 550 is ready for pow-
er-up. To power-up the unit, ensure that the unit is properly connected to an
appropriate power source and turn on the unit using the on/off switch on
the rear panel.
MOUNTING OPTIONS
The ATLAS 550 Base Unit may be installed for tabletop, 19-inch or 23-inch
rackmount, or wall-mount configuration. ADTRAN includes 19-inch rack-
mount ears with the Base Unit (23-inch rackmount ears are sold separately).
For a rackmount installation, the ATLAS 550 Base Unit allows flush-face
mount, face-forward mount, center mount, and rear mount. The rackmount
ears may also be turned face down for wall-mounting. When wall-mounted,
the ATLAS 550 Base Unit may be installed with either side up and the front
and rear panels facing sideways.
REVIEWING THE REAR PANEL DESIGN
The ATLAS 550 rear panel contains four slots for housing option modules
which provide a variety of additional resources and data ports. All slots are
functionally identical. The ATLAS 550 also contains two slots for housing
network interface modules (see Figure 2-1 on page 2-4).
• This unit shall be installed in accordance with Article 400 and
364.8 of the NEC NFPA 70 when installed outside of a Restricted
Access Location (i.e., central office, behind a locked door, service
personnel only area).
• Power to the ATLAS 550 must be from a grounded 90-240 VAC,
50/60 Hz source.
• The power receptacle uses double-pole, neutral fusing.
• Maximum recommended ambient operating temperature is 40
o
C.
Be careful not to upset the stability of the equipment mounting rack
when installing this product.
