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Installation Manual
3. Router Installation
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may not be installed. Refer to Figure 3-18 for the diagram of dual-antenna
4G interface sub card.
Figure 3-18 Dual-antenna 4G interface sub card
(Optional) Install SPD
Install AC Power SPD
The AC power SPD (surge protection device) suppresses the transient overvoltage caused by
lightning inductance shock or other reasons on the power transmission line. When a SPD is used,
the AC power first enters the SPD and then enters the router.
Figure 3-19 The power SPD
1.Socket
Connects the router power.
2.Normal
work
indicator
(green)
on: indicates that the circuit is running normally.
Off: indicates that the protection circuit is
damaged.
3.Grounding and polarity
detection indicator (red)
on: indicates the wiring error (the PE is not
connected or the live wire and naught wire are
reversely connected). At this time, check the power
supply circuit.
4.Power switch
Turn on or turn off the power.