RT-370 User Guide
Page 20 (34)
4.4 Connecting the System Grounding
In the RT-370 construction, the housing is connected to the protective earth, signal ground. The RF antenna
interfaces are referenced to the GND. The 1000BASE-TX Ethernet data interface is isolated.
There are two protective earth connection points, one at the AC connector and a second one at the grounding
screw at the housing.
Figure 11 The grounding screw
Important:
For a safe operation and proper protection against lightning, both protective earth contacts of
RT-370 must be connected to system ground. The grounding must be done always as a first step before
connecting any other external interfaces to the product
For the grounding at the M5 stud, a wire with a cross section of at least 6.0 mm
2
shall be used.
Order of Installation Step
Description
1. Open screw
M5 nut must be opened until terminal of the protective earth can be placed at its
place
2. Install the wire
The grounding wire is set below the rip-lock washer
3. Fix the nut
Tighten the nut for safe operation and good reliable grounding.
The tightening torque shall be 2.0 Nm.
Table 12 Installation procedure, fixing the protective earth
