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4-3MediaLink Switchers • Serial Communication
Using the command/response tables
The command/response tables on the next page list valid command ASCII codes, the
MLS’s responses to the host, and a description of the command’s function or the
results of executing the command. Upper and lower case characters may be used
interchangeably in the command field.
The ASCII to HEX conversion
table at left is for use with the
command/response tables.
ASCII to HEX Conversion Table
•
ASCII to Hex conversion table
X8
= Input to be adjusted (1 – 7)
1 = input 1
2 = input 2
3 = input 3
...
6 = input 6
7 = Aux/Mix audio input
(MLS 506 MA, MLS 506 SA only)
X9
= Adjustment range (0 – 14) (-14dB – +14dB in 2dB
steps)
0 = -14dB
1 = -12dB
2 = -10dB
3 = -8dB
4 = -6dB
5 = -4dB
6 = -2dB
7 = 0dB
8 = 2dB
9 = 4dB
10 = 6dB
11 = 8dB
12 = 10dB
13 = 12dB
14 = 14dB
X10
= Volume adjustment range (0% – 100%)
X11
= Switcher firmware version (listed to
two decimal places e.g.: x.xx)
Symbol definitions
= CR/LF (carriage return/line feed) (hex 0D 0A)
• = Space
Esc
= Escape key
X1
= Specific input number (0 – 7 maximum)
0 = no connection
1 = input 1 & Aux/Mix, 2 = input 2 & Aux/Mix,...,
6 = input 6 & Aux/Mix,
7 = Aux/Mix only
X2
= Maximum number of input channels (1 – 6 max.)
X3
= Video type (can be set for inputs 1 – 3 of the
MLS 506 series only)
0 = YUV (component video)
1 = Vid (composite video, S-video)
X4
= Audio gain
(0 to 9 for MLS 306/MLS 506 only; 0dB through
+9dB in 1dB steps)
(0 to 100 steps of gain/attenuation for MLS 506MA/
MLS 506SA only)
X5
= Audio attenuation (0 to 15 for MLS 306/MLS 506 only;
0dB through -15dB in 1dB steps)
X6
= Balance (0 to 40 steps)
0 = attenuate the left audio channel 100% (mute left)
...
20 = 0dB attenuation for both channels
...
40 = attenuate the right channel 100% (mute the right)
X7
= On/off status
0 = off/disable
1 = on/enable
Command/response table for SIS commands
Command ASCII Command Response Additional description
(host to switcher) (switcher to host)
Input selection
Select an input (audio and video).
X1
! Chn
X1
Select input
X1
(audio and video).
Example: 6! Chn6 Example: select input 6.
Select an audio input.
X1
$ Aud
X1
Select input
X1
audio only.
Select a video input.
X1
& Vid
X1
Select input
X1
video only.