VAC-5000HD User’s Guide155.2 Precautions before connectionFollow the precautions below before connecting to external devices.■ Installation● Do not block vent holes. Keep enough space (3 cm/1.18 inches or more) around the product.● Do not install the VAC in a closed space.If you have to install the product to an EIA rack mount in closed space, add a ventilation to keep theambient temperature of 40 degrees C/104 degrees F or less. If inadequately vented, the life of partsmay be shortened and operations may be affected.■ Cabling● Read the manuals of external devices carefully.● Turn off the transmitter/receiver before connection.● Insert the cable into the connector firmly and do not give the connector stress.● Secure the HDMI cable using a cable clamp to prevent it from falling out of the device.[Fig. 5.4] Attaching cable clampHDMI cables and connectors do not have a lock mechanism. Use the supplied cable clamp to apply the HDMIcable to the VAC.