Sigrand SG-17B, Руководство пользователя

Страница: 12 / 36

12
1.4.1. Remote power Power-over-DSL (PoDSL)
Remote power (PoDSL):
Voltage, DC V 240
Current, mA 70
Output power, W 17
Remote powering of the modem is carried through a DSL signal line.
For the modems which has ability to obtain remote power, on the opposite
side of the DSL line must be installed equipment supporting the power
supply through the line. (see Section 1, p.7 of this Manual).
Modems which supply feeding to the DSL line, powered either locally on the
voltage 48V DC or technology Power-Over-Ethernet (paragraph 1.4.4).
1.4.2. Local powering of the modem
Local powering of the modem is carried out from a local constant-current
power source through the socket “
POWER IN ” (Fig. 2). There are four
modifications of the modem that provide for local powering: for 12, 24 and
48 Volt and ~220V. The mating connector is included in the delivery set.
When hooking up, the electric polarity should be taken into account (Fig. 2).
Figure 2
Failure to comply with the polarity when hooking up a local power
source will cause actuation of power protection.
1.4.3. Through-line powering
Through-line powering of the modem is carried out through a remote power
system. The socket “
POWER OUT ” (Fig. 3) is used for powering the