16Installation and WiringChapter 22.1 Connecting PeripheralsBe sure to turn the PV310 off before connecting the peripherals to the PV310.• Be sure to use the products specified by Matsushita Electric Work, Ltd. (excluding a Compact Flashmemory card).• Be sure to remove power from the PV310 before connecting the peripherals to the PV310. Failure to doso may damage to the device.• Arrange the wiring not to apply load on the cable connector joints; otherwise, the disconnection may beoccurred.• When inserting/removing the cable into/from the connector, be sure to hold it by its plug to preventexcess force applying on the cable. Do not touch the terminals inside the connectors and take care not toallow foreign objects to come into the connectors.