IN1804 Seamless Scaling Switchers • SIS Configuration and Control 71
Command ASCII Command
(Host to Switcher)
Response
(Switcher to Host)
Additional Description
Audio Configuration
Audio Input Format
Set input audio format
E
I
X!
*
X5@
AFMT
}
AfmtI
X!
*
X5@]
Set the audio format for input
X!
to
X5@
.
View audio input format
E
I
X!
AFMT
} X5@]
View audio input format
X5@
for input
X!
.
NOTE: Digital auto modes 4 and 5 detect and use embedded digital audio when present. If digital audio is not detected,
analog audio is used.
KEY:
X!
= Input selection
1 = DisplayPort input 1 (all models)
2 = HDMI or DVI input 2 (all models)
3 = HDMI or DVI input 3 (all models)
4 = HDMI or DVI (standard and DO models)
TP (IN1804 DI and DI/DO)
X5@
= Audio input format
0 = None (input muted)
1 = Analog input — Configures input EDID with no audio support.
Analog audio from the 5-pole captive screw input is passed to the
5-pole captive screw analog output and embedded into the HDMI
output.)
2 = LPCM-2Ch — Configures input EDID for LPCM-2Ch support.
Passes all digital audio input signals to the HDMI outputs. If
LPCM-2Ch audio is present it is also de-embedded to the 5-pole
captive screw analog output.
3 = Multi-Ch — Configures input EDID for Multi-Ch support. Passes
all digital audio input signals to the HDMI outputs. If LPCM-2Ch
audio is present it is also de-embedded to the 5-pole captive
screw analog output.
4 = LPCM-2Ch Auto (default) — Configures input EDID for LPCM-2Ch
support. Passes all digital audio input signals to the HDMI outputs.
If LPCM-2Ch audio is present it is also de-embedded to the analog
5-pole captive screw output. If no embedded audio is present on
the input the IN1804 passes analog audio from the 5-pole captive
screw input.*
5 = Multi-Ch Auto — Configures input EDID for Multi-Ch support.
Passes all digital audio input signals to the HDMI outputs. If
LPCM-2Ch audio is present it is also de-embedded to the analog
5-pole captive screw output. If no embedded audio is present on
the input, the IN1804 passes analog audio from the 5-pole captive
screw input.
*On Input 4 of the IN1804 DI and DI/DO, when set to DTP mode
the switcher uses the analog audio source connected to the DTP Tx
instead of the IN1804 DI or DI/DO rear panel captive screw input. When
Input 4 is set for XTP mode, analog and auto audio modes are not
available.
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