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1-4
Figure 1-3
Front panel of the S7503E-S
(2)
(3)
(4)
(5)
(1)
(1) Power modules
(2) SRPUs (in slot 0)
(3) Fan tray
(4) LPUs (in slot 1 and slot 2)
(5) Jack for ESD-preventive wrist strap
All modules of the S7503E-S are hot swappable.
z
The S7503E-S has three horizontal slots. The SRPU is inserted into the upper slot. See callout 2 in
Figure 1-3. The dedicated S7503E-S SRPU is required. Different LPUs are inserted into the other
two slots. See callout 4 in Figure 1-3.
z
The fan tray is installed on the right side of the chassis. See callout 3 in Figure 1-3.
z
The two power modules, which sit in the upper part of the chassis, provide 1+1 redundancy backup
and support dual power supply inputs. See callout 1 in Figure 1-3. You can select either AC power
supply or DC power supply.
Figure 1-4 shows the rear panel of the S7503E-S.
Figure 1-4
Rear panel of the S7503E-S
(1) COM port for monitoring PoE (RS485)
(2) COM port for monitoring PoE (RS232)
(3) Grounding screws
(4) RTN terminal (+) of external PoE power supply
(5) Negative terminal (–) of external PoE power supply (–46 V to –55 V)
There are two DC power input (PoE power supply input) terminals and two COM ports (monitor ports)
on the rear panel of the chassis.