Tip for viewing Ball Lens: Focus Inspection to maximum closeup field view.
If the transceiver’s loss reading is within acceptable limits, the device can be put into service.
If the port has a physical contact lens and the front of the lens is dirty, attempt to clean using the process below. If the contamination is on the back side of the lens, or on the ball lens at the bottom of the port, it is not possible to clean.
Note, the hardness of the lens coating differs between transceiver types and manufacturers:
Inspect and determine flat or ball lenses. You CANNOT clean a ball lens.
If Flat, select the appropriate cleaning tool for the connector type. XMT = QSFP+ SPF = LC SPF
Insert the cleaning tool into the transceiver port flat lens and clean with confidence. (see video if needed)
RE-INSPECT and determine whether clean or dirty.
If clean, the transceiver can be put into service.
If dirty, repeat the cleaning process or replace the transceiver.