25ConnectionBefore starting the connection, turn off the power of this camera and the devices to be connected.Check and prepare the required devices and cables for connection.Note:• Since the connector storagesection does not have a suffi-cient space, use audio cablesand a LAN cable that do notexceed the sizes described inthe illustrations.z Connect the RCA pin cable to the monitor out connector for adjustment (only used for adjust-ment of the angular field of view).Important:• The monitor out connector for service is provided only for checking the adjustment of the angu-lar field of view on the video monitor when installing the camera or when servicing. It is not pro-vided for recording/monitoring use.• When checking the adjustment of the angular field of view on the video monitor, be sure to usethe RCA jack of the main body for connection with video monitor.• Black bands may appear at the top and bottom or right and left of the screen. (That does notaffect the adjustment because the angular field of view is not changed.)• The video output on the monitor for adjustment does not guarantee the video performance orimage quality.x Connect the microphone to the microphone/line input connector (for use of the audio recep-tion function).Input impedance: Approx. 2 kΩRecommended cable length:1 m {3.3 feet} or less (for microphone input)10 m {33 feet} or less (for LINE input)Recommended microphone:Plug-in power type microphone (option)Connect a monaural mini plug (ø3.5 mm).• Supply voltage: 2.5 V±0.5 V• Recommended sensitivity of microphone:–48 dB ±3 dB (0 dB=1 V/Pa,1 kHz)FRONTTOPEXT I/OAUDIOOUTMIC/LINE IN 10BASE-T/100BASE-IX4231MONITOROUTFINMicrophone/lineinput connectorStraight section17 mm {21/32 inches }30 mm{1-3/16 inches}ø9 mm{11/32 inches}Example ofaudio cable connector40 mm {1-9/16 inches}Straight section30 mm {1-3/16 inches }9 mm{11/32 inches}13 mm {1/2 inches}Example of LAN cableconnectorCaution:• FOR UL LISTED MODEL(S), ONLY CONNECT 12 V DC CLASS 2 POWER SUPPLY.