CatonCaster HD422 User Manual
output level can be set in increments of 0.5 dBu from -10 dBu to +4 dBu referenced to a -20 dBFS digital
input level. When you are setting the output levels it is suggested that an AC-3 stereo tone (2.0) be used as
the source. Do not use a Dolby AC-3 5.1 tone source as your test signal. The five channels will down mix to
a different level structure than a stereo signal depending on the down mix setting.
Downmix Reference Table
The following table is applicable for MPEG Audio (Mono and Stereo), Dolby Digital (Mono, Stereo and 5.1),
Dolby Digital Plus (Mono, Stereo and 5.1) and AAC (Mono, Stereo and 5.1).
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Incoming audio PID —->
Downmix Option
—-> Output e
ff
ect
Stereo
Lo/Ro
OUT = IN
Stereo
Lt/Rt (DS)
OUT = IN
Stereo
Lt/Rt (Auto)
OUT = IN
Stereo
Dual mono
OUT = IN
Stereo
Dual left
OUT L = OUT R = IN L
Stereo
Dual right
OUT L = OUT R = IN R
Mono
Lo/Ro
OUT L = OUT R = IN
Mono
Lt/Rt (DS)
OUT L = OUT R = IN
Mono
Lt/Rt (Auto)
OUT L = OUT R = IN
Mono
Dual mono
OUT L = OUT R = IN
Mono
Dual left
OUT L = OUT R = IN
Mono
Dual right
OUT L = OUT R = IN
5.1
Lo/Ro
OUT L = L + C + Ls
OUT R = R +C + Rs
(per ATSC A52)
5.1
Lt/Rt (DS)
OUT L = L + C - Ls -Rs
OUT R = R +C + Ls + Rs
(per ATSC A52)
5.1
Lt/Rt (Auto)
Lo/Ro or Lt/Rt depending on
Dolby metadata
5.1
Dual mono
OUT L = Front Left
OUT R = Front Right
5.1
Dual left
OUT L = OUT R = IN Lo
5.1
Dual right
OUT L = OUT R = IN Ro
