Electronic Variable Optical Attenuators
Chapter 5: Maintenance & Repair
Rev B, September 5, 2017
Page 11
Chapter 5 Maintenance & Repair
The EVOA should not require regular maintenance. If necessary, the housing
can be cleaned using a soft cloth moistened with a mild glass cleaner. Do not
use chemical solvents or harsh cleaning solutions on the display, and do not
spray cleaning solutions directly onto the unit.
The EVOA does not contain any user-repairable components. If malfunctions
occur, please contact Thorlabs’ technical support
(
). Do not disassemble the unit. There are no user-
serviceable components inside.
The end faces of any fiber patch cables being connected to the EVOA should
be cleaned every time a connection is made. Use, for example, Thorlabs’
FCC-7020 Fiber Connector Cleaner (sold separately). The end faces of the
EVOA’s internal connectors can be easily damaged by dirty fiber ends, and if
damage occurs, the unit will need to be returned to Thorlabs for repair.
The EVOA’s internal connectors can be cleaned using, for example, Thorlabs’
FBC1 Fiber Bulkhead Cleaner (sold separately). The FBC1 allows the internal
connector to be cleaned without removing it from the unit.
Figure 5
FCC-7020 Fiber Connector Cleaner
Figure 6
FBC1 Fiber Bulkhead Cleaner