Table 5-2
Ports on the HEUB
Silkscreen
Connector
Description
ELU
RJ45 connector
Electronic label port
ExtFAN
4-pin connector
Power port for the outer air
circulation fan
IntFAN
4-pin connector
Power port for the inner air
circulation fan
TEM
4-pin connector
Port connected to the
temperature sensor
AC_SPD
Bare wire
Port for collecting the AC
input surge protection alarm
GATE
Bare wire
Port for the door status sensor
COM_IN
RJ45 connector
Port for reporting monitoring
signals
COM_OUT
RJ45 connector
Port connected to the
ETP48100-A1
PWR
3V3 power connector
-48 V DC input port
5.3.2 PMU 11A
The power monitoring unit 11A (PMU 11A) manages the power system, monitors power
distribution, and reports alarms.
Exterior
shows a PMU 11A.
Figure 5-5
PMU 11A
BTS3900C (Ver.C)
Hardware Description
5 BTS3900C Monitoring System
Issue 03 (2013-05-27)
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