AERO.2000 User Guide July 2016
L16/1/18039
©2016 LINEAR ACOUSTIC INC. THE TELOS ALLIANCE. ALL RIGHTS RESERVED
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An Ethernet connection to the AERO.2000 that is unstable (i.e. bad port or other network issue)
can cause the same issue as switching unsynchronized sources into the AERO.2000. The
Ethernet connection must be stable.
10.4
10.4
10.4
10.4
Dolby Digital, Dolby Digital Plus or Dolby E output
Dolby Digital, Dolby Digital Plus or Dolby E output
Dolby Digital, Dolby Digital Plus or Dolby E output
Dolby Digital, Dolby Digital Plus or Dolby E output dropouts
dropouts
dropouts
dropouts
When using the internal Dolby Digital (Digital Plus or E) encoder noise in the Dolby encoded
signal is usually caused by not having a proper reference with respect to the DTV video
encoder/multiplexer. All gear should be referenced to the local plant timing. In some cases, i.e.
some Tandberg devices), the multiplexer generates a special reference signal that must be
routed back to the AERO.2000 and used as its reference. Consult your DTV encoder reference
manual for more details.
10.5
10.5
10.5
10.5
Audio sounds strange
Audio sounds strange
Audio sounds strange
Audio sounds strange
Audio that sounds reverberant, hollow or like sound in a tunnel indicates timing differences
between the audio channels. Stereo viewers are usually the first to notice such problems. The
delay settings in AERO.2000 should all be equal, or set explicitly. Offsets of just a few
milliseconds can be audible under the right conditions.
For those using a Dolby DP564 AC-3 decoder, one of the monitoring modes uses the analog and
digital outputs. This can inject up to 10 ms of delay into the surround channels, which usually
elicits complaints. Either bypass the unit or set the monitoring mode to Digital.
10.6
10.6
10.6
10.6
Audio issues disappear in
Audio issues disappear in
Audio issues disappear in
Audio issues disappear in bypass
bypass
bypass
bypass
Since AERO.2000 can apply significant gain to incoming signals, previously inaudible sounds may
get pulled out of the background. We recommend listening carefully to the station audio for
hums, buzzes, clicks, pops, phase issues, frequency response problems, bass build-up and other
problems in the source audio. When amplified, these artifacts can ruin otherwise excellent
programming.
Ensure that the input audio is immaculately clean or it will sound worse in surround!
Ensure that input channels 3, 4, 5 and 6 are silent when source programs changes between
stereo and surround. Alternately, use a GPI or command over IP to Mute 3/4 and 5/6.
10.7
10.7
10.7
10.7
Audio fixed by re
Audio fixed by re
Audio fixed by re
Audio fixed by re----boot
boot
boot
boot
Re-booting sometimes fixes audio problems simply because the AERO.2000 re-locks to the
digital input when it restarts. The AERO restart also causes all downstream devices to re-lock to
the incoming signal after reboot. This may hide a timing problem with the incoming signal.
