HE4000 Encoding System
Using the Front Panel
Front Panel Menu Summary
Command
Function
Options/Response Format
Determines how often the
HE4000 samples the analog
waveform during the audio
analog to digital conversion
process.
Sample Rate
Additional Information: Selecting
a high audio sample rate will
produce a high-quality audio
signal at the output audio device;
however, a high audio sample
rate reduces the total transport
stream bit rate available for the
video signal. An audio sample
rate should be selected that
meets the audio requirements
while allowing sufficient
bandwidth to meet the video
requirements.
● 48 Ksps (default)
● 32 Ksps
● 44.1 Ksps
Output
Resolution
Query-only; displays the number
of bits per audio sample.
● 20 bit (default)
● 16-bit
● 24-bit
Language
Sets the audio language
descriptor for the selected
service.
● Undetermined (default) – This mode will
accept all languages
● English, Chinese, Danish, Dutch, French,
German, Italian, Japanese, Korean, Portuguese,
Russian, and Spanish.
Delay
Sets the compressed audio bit
stream buffer delay, which
controls the time delay between
the audio and video.
-60 to 200 milliseconds
default: zero (0) msec
● Positive numbers cause the decoder to delay
the audio output with respect to the video (i.e.
lag).
● Negative numbers cause the decoder to
advance the audio output with respect to the
video (i.e. lead).
● Zero (0) represents nominal alignment between
video and audio output from the decoder (i.e. lip
sync). In addition, a zero lip sync value
assumes that the video and audio has lip sync
at the input of the encoder.
Packet/PES
Read only
Default = 1
Copyright
On (default) /Off
Original
On (default)/Off
Sample Format
Sets the audio compression
format which determines how the
left and right channels of the
audio input source are
● Stereo – left and right audio channels are
compressed separately into two output
waveforms. Stereo uses more bandwidth than
mono; however, if the input audio source is
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01-0951-404 Rev B
