OPF-TH1000D/OPF-RH1000D User’s Guide175.2 PrecautionsRead and follow the precautions below before connecting to external devices.■ Installation● Do not place the transmitter on top of the receiver and vice versa.● Do not block vent holes. Keep enough space (3 cm/1.18 inches or more) around the product.● Do not install the OPF-H1000D in closed space.If you have to install the product to an EIA rack mount in closed space, add a ventilation to keepthe ambient temperature of 40 degrees C/104 degrees F or less. (Exception: Installing to IDK’sQuarter rack, RM-42HQ) If inadequately vented, the life of parts may be shortened and operationsmay be affected.Good example3 cm/1.18 inches or moreGood exampleBad exampleSpace needed for OPF-H1000D■ Cabling● Read the instruction manuals of the external devices carefully.● Turn off the OPF-H1000D before attaching or removing the SFP module or cable connection.● Insert the cable into the connector firmly and do not give the connector stress.● Before inserting or removing a fiber optic cable, make sure to first turn the OPF-H1000 off and not totouch the ends of the fiber. Clean up the fiber before inserting it again.● Plug the dust cap into an LC connector of fiber optic cable that is not used.● Secure the HDMI cable using an attached cable clamp in order to prevent it from falling off thisdevice.Attaching cable clamp■ SFP module● Plug the attached dust cap into the SFP module when not connecting a fiber optic cable.● Do not use the attached SFP module to other products, and do not use an SFP module of otherproduct to the OPF-H1000D.● Do not use the SFP module of the OPF-H1000D for other devices or connect fiber optical cable thatare connected to other devices to the SFP module of the OPF-H1000D. It may cause malfunctionsof the SFP module. The maximum receiving optic power used for the OPF-H1000D is 0 dBm.