Page | 14
IP-SDI 4i Product Manual 042020
General Protocol Specifications
Command strings sent to the IP-SDI 4i begin with the ASCII > (greater than symbol) as an ‘Attention’ character and end with a carriage return
(ASCII CR, Hex $0D, or keyboard Enter) as an ‘End of command’ character.
Responses from the IP-SDI 4i begin with the ASCII < (less than symbol) as an ‘Attention’ character and end with a carriage return followed by
a line feed (ASCII LF, Hex $0A) as an ‘End of command’ character.
A carriage return is required at the end of each command and is assumed in all examples.
Command String Structure
[Attention]
[Command] (Parameters) [Return]
Attention
Single character (>) starts the string
Command
A two-character command
Parameters
Added attributes to some commands
Return
A carriage return ends the command string (ASCII CR, Hex $0D, or keyboard Enter) may be used in programming. For
simplicity, the programming examples in the manual will not show the ‘CR’.
Command and Status Response
Commands can be sent back-to-back at any time without any delay. To allow for rapid, multiple commands, status responses are
intentionally delayed by about 125mS, sending the most current status in response to control commands or user actions.
String Example
The example below is a command for a channel change to 6-2 followed by the response string.
>TC=6-2
<1TU006Uxx1002x0
The status of a setting may be queried by omitting the = (equals symbol).
>VL
<VL=62
Control Commands
Code
Function
Operation
Front Panel
P1
Power On
Brings unit out of standby
P0
Power Off
Places unit in standby, mutes audio and video
PT
Power Toggle
Toggles standby mode
S4=
Set Front Panel Lockout Mode
0=None
5=Setup
1=Ch+Menu
6=Menu
2=Vol+Menu
7=All
3=Ch+Vol+Menu
8=Setup+Menu
4=Power
9=Power+Setup+Menu
Press
Select
and
Right
key to unlock temporarily
Q5=
Set IR Receive Mode
0=IR receive disabled
1=IR receive enabled
M0=
LCD Backlight
Sets LCD display backlight brightness 1-10
M8=
LCDC Contrast
Sets LCD display contrast 1-10
