Ir Command Protocol - Planar UR7551-MX User Manual

IR Command Protocol

IR Command Protocol
The Planar UltraRes displays accept commands in the form of IR signals that conform
to the NEC protocol. Each Planar UltraRes remote control has an NEC control code
associated with it. You can use these codes to program a third-party "universal"
remote control to work with the Planar UltraRes displays. These third-party products
usually come with a computer software application for this purpose. For more
information, consult the documentation provided with the remote control.
The IR control codes have the following characteristics:
For example, below is the NEC control code for the ON button of the Planar UltraRes
remote control (assuming the default address is used).
Function
The following example shows the pulse train for this command.
Leader Pulse
9 ms
13.5 ms
30
• Each code consists of the following:
• A leader pulse (a modulated pulse of 9 ms followed by a non-modulated
pulse of 4.5 ms)
• 16 address bits. The default address is 1785 (0x06F9, binary 00000110
11111001)
• 16 data bits: eight (8) bits for the command followed by the logical inverse
of the command
• An end pulse (a modulated pulse of 0.56 ms, similar to the modulated
pulse in the '0' and '1' bits). The end of the modulated pulse constitutes the
end of the data transmission.
• The carrier frequency is 38 kHz, with the modulated pulses having a 33% duty
cycle.
• Commands are sent at a maximum rate of 9 Hz.
Hex 06
00000110
Binary
Address Byte 1 Address Byte 2
Address Byt e 1
4.5 ms 0 0 0 0 0 1 1
Planar UltraRes Series User Manual
F9
11111001
Command
Address Byte 2
0 1 1 1 1 1 0 0 1
27 ms
01
00000001 11111110
Command (Logical
Inverse)
Command Byte Command Byte (logical inverse)
0 0 0 0 0 0 0 1 1 1 1
27 ms
FE
1 1 1 1 0