User Guide User guide
Command/response table for Transmitter SIS commands (continued)
FOX II DP Transmitter and Receiver • Remote Control
23
Command SIS Command 
(host to unit)
Response 
(unit to host)
Additional description
Status requests
View link 1 (Tx-to-Rx) status
1S
X1#]
View link 2 (Rx-to-Tx) status
2S
X1#]
View input video status
3S
X1#]
View input audio status
4S
X1#]
View all signal status
5S
SigI
X1#
•SigO
X1#
•HDCPI
X1$
•HDCPO
X1%]
Report the status of the DisplayPort input, 
DisplayPort output, HDCP encoding on the input, 
and HDCP encoding on the output.
View DisplayPort signal 
status
6S
SigI
X1#
•SigO
X1#]
Report the status of the DisplayPort input and 
DisplayPort output.
View HDCP status
7S
HDCPI
X1$
•HDCPO
X1%]
Report the status of the HDCP encoding on the 
input and HDCP encoding on the output.
View temperature
20S
X1^
F•
X1^
C
]
Show temperature in degrees Fahrenheit and 
Celsius.
Information requests
Information request
I
1Lnk
X1#
•2Lnk
X1#
•Vid
X1#
•Aud
X1#
•
X1&
•Tx
]
The unit responds with the current status 
(signal detected) of optical link 1, optical link 2, 
the video input, and the audio link; the fiber optic 
transmission mode (singlemode or multimode); 
and the device type (
Tx).
Show firmware version
Q
X1*]
Example:
Q
1.23
]
The factory-installed firmware version is 1.23 
(sample value only).
Request part number
N
60–
nnnn–nn
]
See the Extron website, www.extron.com, for 
part numbers.
Input sync detection
E
1LS
} X1(
horizontal
, 
X1(
vertical
]
Shows horizontal frequency in kHz and vertical 
frequency in Hz. 000.0,000.0 if no signal is 
detected.
Request SFP status
40S
X2)
•
X2!
Tx
•
X2!
Rx
•
X2@]
Request switch position
E
STAT
}
EdidMdr
X2#]
Resets
Reset audio
E
ZA
}
Zpa
]
Reset audio setting to default levels (0 dB gain).
System reset
E
ZXXX
}
Zpx
]
Reset all settings to factory defaults.
KEY:  X1# = Link status  0 = light or signal input not detected 
  1 = light or signal detected 
X1$ = Input HDCP signal  0 = no source detected 
  1 = source detected with HDCP 
  2 = source detected but no HDCP present 
X1% = Loop-through display  0 = no sink device connected 
  1 = sink device detected and HDCP compliant 
  2 = sink device detected, but not HDCP compliant 
X1^ = Temperature  nnn 
X1& = Transmission mode  SM = singlemode  MM = multimode 
X1* = Firmware version  v.vv 
X1( = Sync frequency  xxx.x (frequency in kHz [H] or Hz [V]) 
X2)
 = Optical module manufacturer  Up to 16 alphanumeric characters 
X2!
 = Tx or Rx power  xx.x dBm 
X2@
 = Operating temp of module  nnn.n
X2# = EDID switch position  00 (0 hex) through 15 (F hex) (see item 10 and the table on page 9)










