User Guide Manual
Simple Instruction Set Control
Host-to-Unit Instructions
SIS commands consist of one or more characters per field. No special characters are required 
to begin or end a command character sequence. When a command is valid, the unit 
executes the command and sends a response to the host device. All responses from the unit 
to the host end with a carriage return and a line feed (CR/LF = 
]
), which signals the end of 
the response character string. A string is one or more characters.
Symbol Definitions
]
  = CR/LF (carriage return/line feed)
}  = Carriage return (no line feed)
•    =  Space (hard) character
E  =  Escape key (hex 1B)
X!  =  Mute/auto memory status  0 = off  1 = on
X@  = Resolution  01 = 1920 x 1200  11 = 576p 
02 = 800 x 600  12 = 720p 
03 = 1024 x 768  13 = 1080i 
04 = 1280 x 768  14 = 1080p 
05 = 1280 x 1024  15 = 640 x 480 
06 = 1365 x 768  16 = 1440 x 900 
07 = 1366 x 768  17 = 1280 x 800 
08 = 1400 x 1050  18 = 1680 x 1050 
09 = 1600 x 1200  19 = 1360 x 768 
10 = 480p
X#  = Refresh rate  1 = 50 Hz  2 = 60 Hz
X$  =  Mode switch position  0 = off (down)  1 = on (up)
X%  = Output sync format  0 = RGBHV  1 = RGsB
X^  = Output sync polarity  0 = follows input  1 = force sync negative
X&  = Horizontal and vertical position  000 through 255
X*  = Horizontal start  000 through 255
X(  = Pixel phase  00 through 31
X1)  =  Total pixels  ± 255 of default value for selected resolution
X1!  =  Sync frequency  xxx.xx (frequency in kHz [H] or Hz [V])
X1@  =  Memory preset number  01 to 30
X1#  =  Audio gain adjustment range  00 to 10
X1$  =  Audio level adjustment range 
–
18 to +10 (in 1.0 dB steps)
X1%  =  Audio attenuation adjustment range  00 to 18
X1^  =  Audio output level  0 = consumer (
–
10 dBV)  1 = professional (+4 dBu)
X1&  = Test pattern  0 = none  2 = grayscale 
1 = color bars  3 = alternating pixels
X1*  =  Video shutdown interval  0 = 0 seconds (off)  4 = 1 second 
1 = 0.25 second  5 = 1.25 second 
2 = 0.5 second (default)  6 = 1.5 second 
3 = 0.75 second
X1(  = Rx link enable  0 = disable  1 = enable (default)
X2)  =  Link and input status  0 = link or input not sensed  1 link or input sensed
X2!  = Transmission mode  SM = singlemode  MM = multimode
X2@  = Transmitter or receiver  Tx = transmitter  Rx = receiver
X2#  = Firmware version  v.vv
X2$  = Internal temperature  nnnF•nnC
FOXBOX Tx/Rx • Remote Control 20










