Black Box LBH2001A-H, Инструкция по установке и эксплуатации, Страница: 55 / 73

BLACK BOX
®
Gigabit Media Converter Switch Installation & User Guide
42
The Direct DC (Internal) 12V DC (8 – 15V DC) has a built-in terminal block
for +, -, ground. The 9V DC jack is also present. Detailed information about the 12 VDC,
the 24V DC and the –48V DC is provided in the Technical Specifications Section 1.1.
Various models of DC power type and extended ambient temperature power supplies are
available. Specify the power supply needed on your order.
Note: When connected to a -48 V centralized dc source these products are to be installed
only in Restricted Access Areas (dedicated equipment rooms, electrical closets or the
like).
3.6 Powering the LBH2001A with
12V, 24V or –48VDC power input
Each LBH2001A Series Switch is
reliably equipped with an internal DC power
supply, and has built-in screw terminals for secure
attachment of the power leads. Three models
support a range of power input types. The three
model choices are for use with 12VDC, 24VDC
or -48VDC power. DC power input may be chosen for high-availability.