User guide

821116: AMP2 -1 6 V S e r i e s U se r Guide
© 2 014 Wo h l e r Te c h n o l o g ies , In c. A l l r ights re se rve d.
106
Chap ter 5 M enu L ist
Do lb y Decod er C onf ig urat io n M en u
program that appears on the AUX (pair 5) output of the Dolby
decoder. Rotating this control shows you which programs are
contained in the bitstream. If you select a program that does not
exist, it defaults to Program 1 . Usually, however, the stream
contains only one or two programs, so the setting should be either
Program 1 or Program 2 .
• CRC Error Reporting: A CRC (Cyclic Redundancy Check) error is
a momentary flaw in the Dolby bitstream. This can occur for a
variety of reasons, including transmission errors or a brief
interruption of the bitstream. If this happens, the Dolby decoder
will mute the audio for a very short period (perhaps 32 ms) and
then will continue normally.
The occasional CRC error may be nothing to worry about, but
multiple errors indicate of a signal problem. CRC errors are flagged
and counted on the Main Screen of the AMP2-16V. When a CRC
error is detected, a red flag appears at the top of the screen as shown
in Figure 5–14 below.
Figure 5–14 CRC Error Count
After a few seconds, the red bar turns yellow and will remain until
you reset it. Note that when a CRC error first appears, the Menu
button becomes the Reset CRCs button.
• Decode: Either rotating or pressing this knob selects the Dolby
stream to decode. The available options include: All Formats ,
Dolby D Only , or Dolby E Only . This is especially useful for
signals that often switch between PCM and E or D. There will be a 1-
frame burst of noise for every switch between PCM and D or E,
-28.1 LKFS
SwapVideo/Data
Meta
+0
Dolby
Zoom
Pair 6
Recall
MyMix
Anlg
1
Dolby
5.1
AES 1
Down
Mix
Status
Reset CRCs
-60
0
-60
-50
-40
-30
-10
-20
-10
-20
-30
-40
-50
F F
-60
0
D
o
l
b
y
5
.
1
D
o
w
n
M
i
x
A
E
S
1
A
E
S
2
A
n
l
g
1
A
n
l
g
2
Anlg
2
Dolby CRCs: 27
CRC Error Count
Reset CRCs