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Table 5.16 Audio Input Parameters
Parameter Values Description
Input Format Uncompressed (LPCM), Dolby Digital, Dolby E Sets the input format used by the audio encoder.
Input Source
Off, Mute, Test Tone, Embedded 1 to 8, Input 1 -
4
Sets the source used by the audio encoder. No input is fed
to the encoder if Off is selected. Mute mutes the incoming
audio and encodes silence. Test Tone encodes an 1 kHz
test tone, Embedded 1 to 8 sets the source to an SDI
embedded audio stream. Input 1-4 are for the digital
inputs.
Output On Audio Loss No PID, Silence
Specifies the action to take when input is Lost. No PID is
for dropping the audio PID from the stream, Silence is for
encode silence.
When No PID is selected, the reference to the PID is not
removed from the Program Map Table, so a Transport
Stream analyzer will indicate a ghost PID in the output
Transport Stream.
Source Switchout
Off, Mute, Test Tone, Embedded 1 to 8, Input 1 -
4
Specifies which input to output to the reference output on
the 15-way D-type audio connector.
Downmix Parameters
Downmix Type Lo/Ro downmix, Lt/Rt downmix Specifies the downmix type.
Downmix metadata
override
Off, on. Specifies the downmix override.
Downmix metadata
reversion mode
If available, maintain last received metatdata
values, otherwise use fixed settings; Use fixed
settings.
Specifies the downmix metadata reversion mode.
Center mix level 0.707 (-3.0 dB), 0.595 (-4.5 dB), 0.500 (-6.0 dB). Specifies the center mix level.
Surround mix level 0.707 (-3.0 dB), 0.500 (-6.0 dB), 0 (-inf dB). Specifies the surround mix level.
Use preferred stereo
downmix if available.
Off, on Enables the preferred stereo downmix, if available.
Audio Status
Audio Locked No, Yes Specifies audio signal is locked.
Downmix active No, Yes Specifies the downmix is active.
Downmix active Lo/Ro downmix, Lt/Rt downmix Specifies the downmix type.
Level (L) 0 Specifies the left channel level.
Level (R) 0 Specifies the right channel level.
PCM Bypass Active No, Yes Specifies if PCM Bypass is active. Only valid for Dolby E.
Switchout Active No, Yes Specifies if switchout is active. Only valid for Dolby E.
Input Buffer Level 0 Specifies input buffer level.
Input Bit Rate 0 Specifies input bit rate (in kbps).
Dolby Digital Sample
Rate
0
Specifies Dolby Digital sample rate in (Hz). Only valid for
Dolby Digital or Dolby Digital Plus decoding.
Input Coding Mode
Read-only. Specifies the input coding mode as determined
by a Dolby Digital or Dolby Digital plus decode.
Resync Count 0 Specifies the resync count.
Bad RC Packets 0
Specifies the number of bad timing packets received by
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