User's Manual

Site Preparation
3.4.2 Power Consumption of Units
Table 3-1. MobileAccess™ Power Requirements
Unit Type Voltage Input Typical Power
Consumption
Maximum Current
Consumption
Remote Unit 1000 20 to 48VDC 25W
1.25A
Remote Unit 1000E 20 to 48 VDC 29W
1.45A
Add-on Unit 1200 25 to 48VDC 50W
2.0A
RIU – 3 BTSCs 20 to 48VDC 12W
0.6A
Base Unit 20 to 48VDC 14W
0.7A
410/430 Controller 20 to 48VDC 10W
0.5A
MA 850/860 20 to 48VDC 20W
1.0A
3.4.3 Circuit Breakers
Install fuse protections for the system according to the following criteria:
• The following system elements require external fuse protection: RIUs, BUs, and
410/430 Controllers.
• Referring to
Table 3-1, calculate the required fuse protection.
• Example: a set of three elements consisting of a BU, RIU and MA 410/430 controller
requires a 2A circuit breaker.
3.4.4 Types of Power Supplies
MobileAccess supplies various power supplies that can be installed in a rack or mounted on a
wall, depending on your configuration.
3.5 Installation Conventions
Some of the basic installation conventions are listed below for the MA 1000 system:
• Base Units – are usually concentrated in the same location, most often in the main
communication room.
• Remote Hub Units usually placed in the communication shaft or closet of a
corresponding floor so they can be easily located. Each RHU can typically cover a floor of
up to 30,000 sq ft.
• Fiber optic cable - bundled fibers are terminated into the Base Units in the main
communication room. The fibers are then routed to each coverage location where
individual fibers terminate into splice boxes. The splice box couples the installed fiber
into the remote units. Enough spare fibers should be installed to take into account future
expansion of the system.
MA 1000M Installation and Configuration Guide 17