Installing the SmartNode device
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SmartNode 5540 & 4140 Series User Manual
3
• SmartNode Installation
Figure 8. Rear view showing location of Ethernet, FXS, FXO and WAN connectors (SmartNode 5541
shown))
Installing a grounding wire on the SmartNode device’s ground lug
1.
Route the grounding wire from a building ground connection to the SmartNode device.
2.
Connect the grounding wire to the ground lug of the SmartNode device (see
).
3.
Verify that the resistance of the ground path is less than 0.5 ohms.
According to UL60950/IEC62368, a connection to earth
ground—using the ground lug at the rear of the units (see
—is required to protect against power cross.
WARNING
