AVR45 om (G).Eng,Fr 4/16/99 11:41 AM Page 25
Operation
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3/2.1:This message appearsTo engage the Night mode, press the3. Note that not all programs recorded in
when a full complement of DolbyNightbuttonjon the remote andDolby Digital contain full 5.1 channel
Digital signals is present: 3 frontnote that the NIGHT indicator K willaudio. Consult the program guide that
channels (left, center and right), illuminate in the Information Display.accompanies the DVD or laser disc to
2 surround channels (surround determine which type of audio has been
left and surround right) and O1�IMPORTANT NOTES ON recorded on the disc. The AVR45 will
channel, which is the dedicated LowDOLBY DIGITAL PLAYBACK:automatically sense the type of digital
Frequency Effects (LFE) channel. surrround encoding used on an AC-3
1. When the digital playback unit is in aprogram source and adjust to
3/1:This message indicates thepause, fast forward or chapter searchaccommodate it.
AC-3 system is decoding a standardmode the digital audio data may
Dolby Pro Logic signal with left,momentarily stop, causing a NO4. When a Dolby Digital source is
center and right front channels and DATAmessage to be displayed. This isplaying, you may not select any of the
a signal mono surround channel.normal and does not indicate a problemanalog surround modes.
with either the AVR45 or the source
2/0:This message indicates thatmachine. The AVR45 will return to Dolby5. It is not possible to record the output
the AC-3 system is decoding a tradi-Digital/AC-3 playback as soon as the dataof a Dolby Digital program.
tional two-channel stereo signal andis available when the machine is in a
that no center, surround or LFEstandard play mode.PCM Audio Playback
signals are present.PCM (Pulse Code Modulation) is the
2. The AVR45 will decode digital audionon-compressed digital audio system
1+1:This is a monaural signalsources with a sampling frequency ofused for compact discs and non-AC-3
that plays the same information in32kHz, 44.1kHz and 48kHz. Althoughlaser discs. The digital circuits in the
both the left front and right frontthis will enable it to decode virtually allAVR45 are capable of high-quality digital-
speakers. There is no sound sent toDVD movies and HDTV sources, it is pos-to-analog decoding, and they may be
the center or surround speakers.sible that some future digital sourcesconnected directly to the digital audio
may not be compatible with the AVR45.output of your CD or LV player.
1/0:This is a monaural signal
that plays through the center channelNOTE: In order to play the Dolby DigitalConnections should be made to the
speaker only. There is no sound at thesignals that are recorded on laser discs,AC-3/PCM Opticalor Coaxialinputs
front left/right or surround speakers.you must have both a laser disc player!áon the rear panel, using whichever
with an RF output, and an optional,input is not occupied by an AC-3 source
Night Modeoutboard RF-to-data demodulator. Tosuch as a DVD player.
A special feature of Dolby Digital is thelisten to Dolby Digital LV discs, connect
Night mode, which enables AC-3 inputthe AC-3/RF output of the player to theTo listen to a PCM digital source, first
sources to be played back with their fulldemodulator, and connect the output select the input for the desired source
range while reducing the minimum peakof the demodulator to the Coaxialor(e.g., CD). Next press the Digitalbutton
level by 1/4 to 1/3. This prevents abruptlyOpticalinputs !áon the rear panelwöand then using the �/Ubuttons
loud transitions from causing distur-of the AVR45. DO NOT connect the gon the remote or the Selector
bances without reducing the impact ofAC-3/RF output of a laser disc playerbuttonsü on the front panel until the
the digital source. The Night mode isdirectly to the AVR45.desired choice of either COAXIALor
available only when AC-3 signals withOPTICAL, as it appears in the Main
special data are being played.Information DisplaS. Press the y Set
button i÷ to enter the desired choice. |
ACEC
