© 2012 Harmonic Inc.
37
Electra 1000, Version 3.0, Rev M
Appendix A
Audio and Video Specifications
A.1 AIC Features
The AIC adapter accepts analog (balanced or unbalanced), discrete AES3/SPDIF digital, and
AES3 embedded in serial digital video inputs. For analog and discrete AES3 inputs, sampling
frequencies of 48 kHz, 44.1 kHz, and 32 kHz are supported. Embedded digital is supported
only for 48 kHz sampling, which must be synchronous to the video. AIC cards also support
FixedAudio Gain.
Table A-1 lists the AIC features for each coding mode, including the supported sampling
frequencies and ES bit rates.
Table A-1: AIC Adapter Features
AIC Feature
Coding Mode
Sampling
Frequency
ES Bit Rates
Supported (Kbps)
MPEG-1 Layer II
compression
Single channel (1/0)
32 kHz
44.1 kHz
48 kHz
32, 48, 56, 64, 80, 96, 112,
128, 160, 192
Dual channel (1+1)
Stereo channel (2.0)
Joint stereo channel
32 kHz
44.1 kHz
48 kHz
64, 96, 112, 128, 160, 192,
224, 256, 320, 384
MPEG-1 Layer II
compression
SPPC (separate PID
per channel)
Single channel (1/0)
32 kHz
44.1 kHz
48 kHz
32, 48, 56, 64, 80, 96, 112,
128, 160, 192
Dolby Digital (AC-3)
compression
Single channel (1/0)
32 kHz
44.1 kHz
48 kHz
56, 64, 80, 96, 112, 128,
160, 192, 224, 256, 320,
384, 448
a
, 512
a
, 576
a
,
640
a
Stereo channel (2/0)
32 kHz
44.1 kHz
48 kHz
96, 112, 128, 160, 192,
224, 256, 320, 384, 448
a
,
512
a
, 576
a
, 640
a
Dolby Digital (AC-3)
passthrough
Up to 5.1 channels
(3/2+LFE professional
16-bit mode)
32 kHz
44.1 kHz
48 kHz
56
b
, 80
b
, 96, 112, 128, 160,
192, 224, 256, 320, 384,
448
a
, 512
a
, 576
a
, 640
a
Up to 5.1 channels
(3/2+LFE professional
32-bit mode)
32 kHz
44.1 kHz
48 kHz
256, 320, 384, 448
a
, 512
a
,
576
a
, 640
a