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Chapter 2. Connecting 33
When Connecting IEEE 1394 Devices
• Do not loop the last device in the chain back to the
TV. When the device chain is looped, the TV may not
be able to work with the other devices.
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• Place devices that have only a mechanical (two-
position) power switch at the end of the chain or
leave the power switch in the On position. When
turned Off, IEEE 1394 signals may not be able to
pass through the device to other devices.
• Place devices with the slowest communication
speed at the end of the chain. Sometimes the
communication speed will be marked near the IEEE
1394 connector with an “S” number. The higher the
number, the faster the communication speed. This
TV has a communication speed of S400. Devices
with slow communication speed can interfere with
IEEE 1394 signals from faster devices. When using
NetCommand to set up a digital recording between
a faster device and a slower device, make the slower
device the source and make the faster device the
recorder.
• Do not use an IEEE 1394 cable over 15 feet in length
between each device.
• This TV is an IEEE 1394a device. It can be used
with a 1394b system when an IEEE-1394a-to-1394b
convertor is used. 1394b systems are capable of
greater distances and multi-room applications.
Connecting Compatible IEEE 1394 Devices
Compatible IEEE 1394 Devices
Compatible A/V devices include some, but not all, cable
boxes, D-VHS VCRs, A/V discs, and future products. It
is also possible to connect devices to the TV that have
IEEE 1394 connectors but are not compatible with the
TV or with the NetCommand
®
control system. Areas of
compatibility to consider are:
1. Digital Video Signals
The TV is able to decode MPEG2 and DV video as
provided by some camcorders. If the TV is unable to
decode the digital signal supplied by your camcorder, try
S-video and analog audio connections instead. Other
types of digital video, such as PC video provided by
some computers, must be decoded by the source device
and sent to the TV as analog video, S-video, or HDMI
video.
2. Digital Audio Signals
When received with video signals, the TV is able to
decode Dolby Digital signals and MPEG audio signals.
Other types of digital audio as provided by some digital
recording devices, such as MP3 audio and DTS audio,
cannot be decoded by the TV when received over IEEE
1394
The TV may not be able to pass incompatible digital audio
signals on the coaxial digital audio output, however, these
signals may pass on the IEEE 1394 cable to other devices.
3. Digital Control Signal
The TV can serve as the control center for IEEE 1394
audio/video devices, such as VCRs, A/V Discs, tuners,
cable boxes and amplifiers that are compatible with the
following IEEE 1394 control standards.
• EIA-775 is designed for tuning devices such as cable
boxes, allowing the device to send simple graphics.
This standard does not, however, allow the TV to
control the cable box by IEEE 1394.
• AV/C (Audio Video Control) is designed to provide
basic controls such as play, stop, channel selection,
and volume, as appropriate for the device.
The IEEE 1394 interface may not provide reliable control
signals for some DV camcorders, especially older models.
If your camcorder operates incorrectly or not at all, use
the camcorder’s control buttons instead of the IEEE 1394
connection.
Some devices may be a combination of two or more
types of devices. For example, there may be a recording
device that is also a tuning device. Each portion of the
device is called a sub-unit. When you select a device on
the Device Selection menu that has sub-units, a pop-
up menu will appear so you can select which sub-unit
section you wish to use.
IMPORTANT
DV Camcorder Notes
A. When viewing DV camcorders, it is normal for
temporary audio and video distortion to occur
under conditions such as:
• Playback start and stop
• Playback pause
• Forward or reverse picture search
B. Some DV Camcorder models are not compatible
with this TV’s IEEE 1394 system and the “New
1394 Device” screen will not appear when
the camcorder is connected. For playback of
incompatible DV camcorders, try S-video and
analog audio connections instead.
C. TV Disc cannot record DV video. Record DV
video on an IEEE 1394 device designed to record
DV video.