Psu (Ac/Dc); Figure 4-53 Right Panel Of The Pmu - Huawei BTS3900 V100R003 Hardware Description

BTS3900
Hardware Description
DIP Switch
The DIP switch, which is used to choose monitoring address, is positioned on the right panel of
the PMU. The DIP switch has eight bits, which are set before the PMU is delivered, as shown
in Figure

Figure 4-53 Right panel of the PMU

4.12.3 PSU (AC/DC)

The PSU is a power supply unit. The PSU (AC/DC) converts 220 V AC power into -48 V DC
power.
Panel
Figure 4-54
Issue 04 (2011-02-15)
NOTE
In 3s to 5s after the PMU is powered on, the ALM and RUN LEDs are simultaneously on for about 3s.
4-53.
shows the panel of the PSU (AC/DC).
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