3G-AM Mini-Converter v1.0
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as Dolby) bits are detected, the sample rate converter is bypassed (it would corrupt the
compressed data).
• On - Pass all input AES audio through the sample rate converter before embedding (for
example, for use with PCM audio). AES inputs are sample rate converted to a 48KHz rate
synchronous to the video input.
• Off - Do not pass any input AES audio through the sample rate converter before
embedding (for example, for use with Dolby® Digital from a synchronous source).
NOTE:
For proper operation with SRC Off, the AES input timing must be externally synchronized to
the input SDI.
About SRC Settings
48KHz synchronous ancillary packets are disembedded and passed unaltered to the AES
outputs regardless of the SRC setting. With the SRC setting Off, data packets are passed
from the AES inputs to embedded ancillary packets un-altered, according to SMPTE
337M. All AES3-2003 defined channel status bits are passed through unaltered in both
the embed and dis-embed directions—except for the sample rate field, which is always
set to 48KHz. The channel status CRC is re-calculated and inserted into the bitstream. This
ability, along with a very small audio embed/disembed latency, ensures 100 percent
compatibility with Dolby® bitstreams.
Update Tab Screen
Use this Update screen to view the software version currently installed on the converter
or install new software.
Figure 9. MiniConfig, Update Screen
NOTE:
When discussing Mini-Converters, “Firmware” is software that will be stored in the Mini-
Converter’s non-volatile memory and used when it is powered up. This is something different
than the MiniConfig application software. The version numbers shown in the Update screen
refer only to the firmware.
The following fields and control are present in this screen:
