Harman Kardon AVR245 Service Manual

Also see for AVR 245: Brochure & specs Function guide Quick start guide Worksheet Owner's manual

Contents

Harman Kardon AVR245 Service Manual Manual pdf 16 page image

Componentvideo cableS-video cableCompositevideo cableCONNECTIONS1818Digital Video ConnectionsThe AVR 245 is equipped with two HDMI (High-Definition MultimediaInterface) inputs, and one output. HDMI is capable of carrying digitalaudio and video information using a single cable, thus delivering thehighest possible quality picture and sound.There are different versions of HDMI, depending on the capability of thesource device and the type of signal it is capable of transmitting via theHDMI connection.In addition, receivers and processors such as the AVR 245 may handlethe incoming signal in several different ways, depending on their capabil-ity as well. The AVR 245 is only capable of switching the HDMI data.That is, the incoming audio and video data will be passed directly toyour HDMI-capable video display, without the AVR 245 processing anyof the data. Although this enables the AVR 245 to be compatible withvirtually any HDMI-capable source device and video display, it requires aseparate audio connection for each source since the AVR 245 doesn’thave access to the audio data in the HDMI stream.The AVR 245 will not convert analog video signals to the HDMI format,and the on-screen displays are not visible when using an HDMI source.Therefore, you will need to connect the component, composite or S-video monitor output to your video display (or both, depending on whichvideo connections your sources use).The physical HDMI connection is simple. The connector is shaped foreasy plug-in (see Figure 9). If your video display has a DVI input, youmay use an HDMI-to-DVI adapter (not included) to connect it to theAVR’s HDMI Output.Figure 9 – HDMI ConnectionAnalog Video ConnectionsThere are three types of analog video connections: composite video,S-video and component video.Composite video is the basic connection most commonly available. Thejack is usually color-coded yellow, and looks like an analog audio jack,although it is important never to confuse the two. Do not plug a com-posite video cable into an analog or coaxial digital audio jack, or viceversa. Both the chrominance (color) and luminance (intensity) compo-nents of the video signal are transmitted using a single cable. SeeFigure 10.Figure 10 – Composite VideoS-video, or “separate” video, transmits the chrominance and luminancecomponents using separate wires contained within a single cable. Theplug on an S-video cable contains four metal pins, plus a plastic guidepin. Be careful to line up the plug correctly when you insert it into thejack on the receiver, source or video display. See Figure 11.Figure 11 – S-VideoComponent video separates the video signal into three components –one luminance (“Y”) and two sub-sampled color signals (“Pb” and “Pr”) –that are transmitted using three separate cables. The “Y” cable is color-coded green, the “Pb” cable is colored blue and the “Pr” cable is col-ored red. See Figure 12.Figure 12 – Component VideoIf it’s available on your video display, HDMI is recommended as the bestquality connection, followed by component video, S-video and thencomposite video.AntennasThe AVR 245 uses separate terminals for the included FM and AMantennas that provide proper reception for the tuner.The FM antenna uses a 75-ohm F-connector. See Figure 13.Figure 13 – FM AntennaThe AM loop antenna needs to be assembled. Then connect the twoleads to the screw terminals on the receiver. See Figure 14.Figure 14 – AM AntennaRS-232 Serial PortThe RS-232 serial port on the AVR 245 is used only for data. IfHarman Kardon releases a software upgrade for the receiver’s operatingsystem at some time in the future, the upgrade may be downloadedto the AVR using this port. Complete instructions will be provided atthat time.16AVR245 harman/kardon