EXFO FTB-2 - Manual (Page 320)

Troubleshooting
310 FTB-2 and FTB-2 Pro
Transportation
Transportation
Maintain a temperature range within specifications when transporting the
unit. Transportation damage can occur from improper handling. The
following steps are recommended to minimize the possibility of damage:

Pack the unit in its original packing material when shipping.

Avoid high humidity or large temperature fluctuations.

Keep the unit out of direct sunlight.

Avoid unnecessary shocks and vibrations.