Operation
lock onto, and is thus “unlocked.” You may see this message when a DVD is first started until the stream is playing and the processor determines which mode to apply; or any time the data stream is stopped or paused, such as when the menus of some discs are displayed or when the player is switching between the different sections of a disc. You may also see the message when a satel- lite receiver, cable set-top or HDTV tuner is in use if the digital audio is temporarily interrupted when channels are changed or when a cable box switches from a channel with a digital data stream to a channel with analog audio only. The UNLOCK message is normal, and does not indi- cate any problem with your receiver. Rather, it tells you that the incoming data has simply been paused or is not present for a variety of possible reasons.
When Dolby Digital 3/2/.1 or DTS 3/2/.1 signals are being played, the AVR will automatically switch to the proper surround mode, and no other processing may be selected. When a Dolby Digital signal with a 3/1/0 or 2/0/0 signal is detected you may select any of the Dolby surround modes.
If the EX flag is off, and your receiver has been configured for 6.1/7.1 operation, you may manu- ally turn on EX processing as appropriate by sim- ply selecting the Dolby Digital EX surround mode as described on pages 18 and 26. When the ES flag is not present in a DTS bitstream, you may benefit from a 6.1-channel presentation by select- ing the DTS+Neo:6 surround mode as described on pages 18 and 26. In that mode, the DTS Neo:6 algorithms will be used to derive the surround back channel from the DTS bit-stream informa- tion.
When Dolby Digital 3/2/.1 or DTS 3/2/.1 signals are being played, the AVR will automatically switch to the proper surround mode, and no other processing may be selected, with these excep- tions:
•When a Dolby Digital 2.0 signal is detected, you may choose to listen to it in its native form. To do so, scroll through the Dolby surround modes until the Stereo icon lights in the Surround Mode Indicators (in addition to the Dolby Digital icon.
Alternatively, you may engage surround pro- cessing by scrolling through the Dolby Pro Logic II and IIx modes, and the Dolby Pro Logic icon will light in addition to the Dolby Digital icon.
•As indicated above, when the EX flag is not present in a Dolby Digital bitstream, you may scroll through the Dolby surround modes to manually select Dolby Digital EX processing.
•When a DTS 5.1 signal is detected, you may lis- ten to it as a two-channel presentation, a 5.1- channel presentation or a 6.1-channel presen- tation (if your AVR is configured for 6.1 opera- tion). To hear a two-channel presentation, scroll through the DTS sur-round modes until the
Stereo icon lights in the Surround Mode Indicators (in addition to the DTS icon. Continue scrolling to engage DTS 5.1 process- ing or DTS+Neo:6 (6-channel) processing.
•If a DTS-ES 6.1 Discrete signal is present, you may choose a two-channel presentation, a 5.1- channel presentation or a 6.1-channel presen- tation (if your AVR has been configured for 6.1 operation). Scroll through the DTS surround modes until the Stereo icon lights in the Surround Mode Indicators ( in addition to the DTS icon. Continue scrolling to engage DTS 5.1 processing or DTS-ES Discrete processing.
When a Dolby Digital signal with a 3/1/0 or 2/0/0 signal is detected you may select any of the Dolby surround modes.
It is always a good idea to check the readout for the channel data to make certain that it matches the audio logo information shown on the back of a DVD package. In some cases you will see indi- cation for “2/0/0” even when the disc contains a full 5.1, or 3/2/.1 signal. When this happens, check the audio output settings for your DVD player or the audio menu selections for the specif- ic disc being played to make certain that the play- er is sending the correct signal to the AVR.
PCM Playback Indications
PCM is the abbreviation for Pulse Code Modulation, which is the type of digital signal used for standard CD playback, and other non- Dolby Digital and non-DTS digital sources such as Mini-Disc. When a PCM signal is detected, the Main Information Display Òwill briefly show a message with the letters PCM, in addition to a readout of the sampling frequency of the digital signal.
In most cases this will be 48 KHZ, though in the case of specially mastered, high-resolution audio discs you will see a 96 KHZ indication.
The PCM 48 KHZ indication will also appear when modes or inputs are changed for analog sources. In those cases the system is telling you the sampling frequency used internally at the output of the analog-to-digital converters that change the incoming signal from a VCR, tape deck, the tuner, or other ana-log source to digital.
Speaker/Channel Indicators
In addition to the Bitstream Indicators, the AVR features a set of unique channel-input indicators that tell you how many channels of digital information are being received and/or whether the digital signal is interrupted.
(See Figure).
These indicators are the L/C/R/LFE/SL/SR/SBL/SBR letters that are inside the center boxes of the Speaker/Channel Input Indicators $in the front panel Main Information Display Ò. Remember that the AVR 140 is capable of pro- cessing a 7.1-channel signal, although you may only connect one surround back speaker to it. It will automatically combine the left and right sur- round back channel information, and output it through the single surround back speaker, if you have configured that speaker using the SPEAKER SIZE menu (Figure 7).
When a standard analog stereo or matrix surround signal is in use, only the “L” and “R” indicators will light, as analog signals have only left and right channels.
Digital signals, however, may have one, two, five, six or seven separate channels, depending on the program material, the method of transmission and the way in which it was encoded. When a digital signal is playing, the letters in these indicators will light in response to the specific sig- nal being received. It is important to note that although Dolby Digital, for example, is referred to as a “5.1” system, not all Dolby Digital DVDs or audio tracks selected on DVD or other Dolby Digital programs are encoded for 5.1. Thus, it is sometimes normal for a DVD with a Dolby Digital soundtrack to trigger only the “L” and “R” indicators.
NOTE: Many DVD discs are recorded with both “5.1” and “2.0” versions of the same sound- track. When playing a DVD, always be certain to check the type of material on the disc. Most discs show this information in the form of a listing or icon on the back of the disc jacket. When a disc does offer multiple soundtrack choices, you may have to make some adjustments to your DVD player (usually with the “Audio Select” button or in a menu screen on the disc) to send a full 5.1 feed to the AVR or to select the appropriate audio track and thus language. It is also possible for the type of signal feed to change during the course of a DVD playback. In some cases the previews of special material will only be recorded in 2.0 audio, while the main feature is available in 5.1 audio. As long as your DVD player is set for 6- channel output, the AVR will automatically sense changes to the bitstream and channel count and reflect them in these indicators.
OPERATION 31
