EXFO FTB-500 - Manual (Page 32)

Getting Started with Your Unit
24 FTB-500
Grounding Your Unit
To ground your unit:
1. Position the unit so that you can see its left panel.
2. Place the U-shaped terminal under the grounding stud’s screw head.
3. Turn the grounding stud clockwise to screw it tight.
4. Ground the other end of the wire as per your local regulation.
Your unit is now grounded properly.
Eight-slot model Four-slot model