CommScope ERA UAP2 - Chapter 3. Plan and Prepare for a Fiber UAP2 Installation; Determine the Power Consumption of the UAP2; UAP2 Dimensions

Plan and Prepare For A Fiber UAP2 Installation
Do the following before beginning installaon.
1. Review and know the informaon in Determine the Power Consumpon of the UAP2.
2. UAP2 Dimensions.
3. Map out all cable runs.
4. Obtain any accessories required for this installaon; see UAP2 Accessories and Opons.
5. Unpack and Inspect the UAP2 and Accessories.
Determine the Power Consumption of the UAP2
Refer to individual spec sheets for the power consumpon of the specic UAP2 and SFP+ models used.
Consider that what is specied is the consumpon at the unit itself and that voltage drop over feeder cables
must be accounted for when dimensioning a remote power supply. Also consider that voltage out of a
remote power supply must be sucient such that it is in the range of -42 to -57V a the unit, aer
accounng for voltage drop from the feeder cables.
For example, if the UAP2 and installed SFP+ require 140W and there is a 10V drop over the feeder cables:
■ The power supply must be able to output at least -52V and no more than -67V.
■ At -52V output, the power supply must support 3.33A to supply 140W (140 / 42 = 3.33).
■ If the parameters of the power supply are -52V and 3.33A, the consumpon at the supply is 173W even
though the demand at the unit is only 140W. This is before considering eciency losses between mains
power and power supply.
UAP2 Dimensions
Use the dimensions shown in the secon applicable to this installaon to determine the space required at
the mounng site. Using the Hybrid Splice Box will increase the needed space; see Figure 3: UAP2
Dimensions with Hybrid Splice Box (page 21).
DRAFT: CONFIDENTIAL
Chapter 3
CommScope ERA
®
UAP2 with Fiber Interface Installaon Guide , Release
P/N M0203AB, DRAFT Rev D 18