Cobalt Digital COMPASS 9301 AES Audio Delay - Manual (Page 58)

3
Troubleshooting
3-28 9301 PRODUCT MANUAL 9301-OM (V4.2)
Audio signal(s) do not route
as expected.
Parameter control not
available as expected.
• Audio Input Controls
Passthrough mode may
inadvertently be enabled
• When this mode is enabled, flexible
routing and parametric controls are not
available. If this mode is not intended for
use, make sure it is set to Off (disabled).
Refer to Audio Input Controls function
submenu tab on page 3-9 for more
information.
Note: Routing and parametric controls may
appear functional when Passthrough is
enabled, although the controls will not
be functional.
• AES audio is Dolby
®
E or
Dolby Digital encoded
signal
• When a valid Dolby
®
E or Dolby Digital
signal (in accordance with SMPTE 337M)
is detected on an AES signal, SRC is
automatically bypassed (disabled) along
with gain and polarity controls being
bypassed (even though controls may
appear to be functional). Gain and
polarity controls are not available for this
signal type.
Refer to Status Displays in Audio Input
Controls function submenu tab on page
3-9 for more information.
Audio not processed or
passed through card. • Input audio of type that
cannot be locked by 9301
card
• AES audio must be nominal 48 kHz input.
Note: Although the Status Displays in Audio
Input Controls function submenu tab
will show audio formats other than
“Locked Professional” as being locked
(such as “Consumer Locked”), in any
case the audio must be at nominal
48 kHz rate for lock and processing to
occur.
• AES pairs 1 thru 4 switch
not set for Input (factory
default) mode
• If any of AES IN 1 thru AES IN 4 are to be
used as inputs, the respective DIP switch
must be set to the default INPUT mode
position.
See Installing the 9301 Into a Frame Slot
(p. 2-1) in Chapter 2,“Installation and
Setup” for more information.
• Upmixer inadvertently
enabled (Upmixer Licensed
Feature Only)
• Make certain upmixer is set to Bypass if not
intended for use.
Note: When manually enabled or set for automatic
enable with appropriate signal levels, upmixer
overwrites selected channels with new data;
same-channel output will no longer represent
same-channel inputs for selected channels.
Table 3-3 Troubleshooting Processing Errors by Symptom — continued
Symptom Error/Condition Corrective Action