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Command and Response Table for SIS Commands
Command Function
Video mute
Mute output video only
Mute output video and sync
Unmute video and sync
View mute status
X!
KEY:
= Video mute
Audio mute — Digital Output or Analog Audio Out
Enable audio mute
Example:
Disable audio mute
Example:
View audio mute status
NOTE:
To view audio mute status, digital audio status and analog audio status must be viewed individually.
X@
KEY:
= Audio output
X#
= Audio mute status
X3#
= View audio output
Information requests
View firmware version
View full firmware version
View part number
View Extron serial number
View updated FPGA version
View input video status
View input audio status
View LinkLicense
View input HDCP status
View output HDCP status
If a non‑HDCP compliant display is connected, the
NOTE:
X$
= Input video signal status
KEY:
X%
= Input audio status
X^
= Input HDCP status
X&
= Output HDCP status
SIS Command
Response
(Host to Unit)
(Unit to Host)
1B
Vmt1
2B
Vmt2
0B
Vmt0
X!]
B
Verbose mode 2/3:
Vmt
0
1
= Unmute (default)
= Mute video only
X@
*1Z
Amt
1*1Z
Amt1*1
X@
*0Z
Amt
3*0Z
Amt3*0
X3#
X#]
Z
1
= Digital out (Rx HDMI Out),
3
= All outputs (digital and analog)
0
= Unmute (default)
1
= Digital
Q/q
x.xx
Verbose mode 2/3:
Ver 01*x.xx
*Q/q
x.xx.xxxx
Verbose mode 2/3:
Bld x.xx.xxxx
N/n
60‑xxxx‑xx
Verbose mode 2/3:
Pno 60‑xxxx‑xx
19I/i
Serial number
Verbose mode 2/3:
Inf19*Serial number
35Q/q
x.xx
Verbose mode 2/3:
Ver 35*x.xx
4S/s
X$]
Verbose mode 2/3:
Sts04*
5S/s
X%]
Verbose mode 2/3:
Sts05*
E
}
LELIC
FOX3 Uncompressed Video, 79-2560-01
E
}
X^]
IHDCP
Verbose mode 2/3:
HdcpI
E
}
X&]
OHDCP
Verbose mode 2/3:
HdcpO
HDCP
O response is always
0
= Not detected
0
= Not detected
0
= No source detected
2
= Source with no HDCP present
0
= No active sink detected
2
= Sink detected, output signal not encrypted
FOX3 SR 201 Scaling Receiver • SIS Configuration and Control
Additional description
]
]
]
Default
X!]
2
= Mute video and sync
X@
]
*1
]
Digital audio (embedded on HDMI output)
is muted; analog audio is unaffected.
X@
]
*0
]
Default. Both audio outputs are
unmuted.
2
= Analog (Rx Analog Output)
1
= Mute
2
= Analog
]
]
]
]
]
]
]
]
]
]
X$]
X%]
If LinkLicense is not installed, returns
X^]
X&]
2
.
1
= Detected
1
= Detected
1
= Source with HDCP detected (default)
1
= Sink detected, output signal encrypted
]]
]]
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