System information

Manual:Grounding
103
Note! Even if you don't ground the outdoor wireless device, and only use a shielded cable, you should still ground
the device it's connected to (indoors). Ie. the switch, routerboard or PC.
Manual:Wireless card diagnostics
R52, R52Hn and R52H Power Amplifier damage
If the cards are becoming too hot to touch, when inserted in a RouterBOARD, but are disabled - the PA might be
damaged. This could be caused by user, or by manufacturing problem. To determine, must return to RMA for close
inspection.
R52, R52Hn and R52H ESD damage
Improper grounding can cause ESD damage to wireless cards during storms or other ESD situations. To test if your
R52 or R52H card is malfunctioning due to lightning/storm electrostatic damage, use a multimeter. In case the test
fails with this method, the warranty doesn't cover it:
Damaged card:
Normal card: