Command ASCII Command
(host to scaler)
Response
(scaler to host)

Additional Description

Audio Configuration

Audio mute (global setting)

Mute on 1Z Amt1]Mute audio output.
Mute off 0Z Amt0]Un-mute audio output.
View status ZX(] View mute status.

Audio gain and attenuation (per analog input)

Set gain/
attenuation
X3#G AudX3#] Set gain/attenuation on current input
to X3# dB.
Increment +G AudX3#] Increment audio level (up).
Decrement -G AudX3#] Decrement audio level (down).
View GX3#] View current audio level.

Audio input format

NOTES: • Selects between analog (3.5 mm TRS) or digital (embedded in HDMI input) audio sources.
• Inputs 1 and 2 X3$ can only be set to 0, 1, 2, or 3; attempting to set these inputs to a digital format yields an E14 response.
• Digital auto modes (6 or 7) detect and use embedded audio when present, or use TRS 3 if digital audio is not detected
Set None EIX!*0AFMT}AfmtIX!*0]Mutes all audio for input X!.
Set Analog TRS 1 EIX!*1AFMT}AfmtIX!*1]Select analog audio for input X!
(default for input 1).
Set Analog TRS 2 EIX!*2AFMT}AfmtIX!*2]Select analog audio for input X!
(default for input 2).
Set Analog TRS 3 EIX!*3AFMT}AfmtIX!*3]Select analog audio for input X!.
Set LPCM-2Ch EIX!*4AFMT}AfmtIX!*4]Select LPCM-2Ch audio for input X!
(default for input 3).
Set Multi-Ch EIX!*5AFMT}AfmtIX!*5]Select Multi-Ch audio for input X!.
Set LPCM-2Ch
Auto
EIX!*6AFMT}AfmtIX!*6]Select auto detect audio for input X!
(valid for input 3 only — EDID set to
LPCM-2Ch).
Set Multi-Ch Auto EIX!*7AFMT}AfmtIX!*7]Select auto detect audio for input X!
(valid for inputs 3 only — EDID set to
Multi-Ch).
View audio type EIX!AFMT}X3$] View the audio input type X3$ for
input X!.
NOTE: X! = Input selection: 1 to 3
X( = Enable or disable:
0 = Off or disable, 1 = On or enable
X3# = Audio gain and attenuation: -18 through + 12 dB, (with leading ��+” or “–“)
X3$ = Audio Input type:
0 = None, 1 = Analog TRS 1, 2 = Analog TRS 2, 3 = Analog TRS 3, 4 = LPCM-2Ch, 5 = Multi-Ch,
6 = LPCM-2Ch Auto, 7 = Multi-Ch Auto. See the command description on page 25 for variable details.
DSC 301 HD • SIS Communication and Control 32