Ir Format - Zektor HDS4x2 User Manual

IR format

The default IR codes used by the HDS4x2 are 32 bits long, based on the NEC transmission protocol and use a
carrier frequency of 38KHz.
Typical IR Code. Example Code = 807D08F7 (hex):
Leader Data Bits
8 0 7 D
A magnified view of the Leader and first three data bits:
A magnified view of the Repeat Code (sent when key is held down):
HDS4x2 User Guide, Rev 1.1, 08-31-07
Stop Bit
0 8 F 7
108 mS
9 mS
9 mS
IR Jack, IR Format and IR Codes
Repeat Code
108 mS
4.5 mS
0.56 mS
2.25 mS
1 Bit 0 Bit
0.56 mS
2.25 mS 1.125 mS
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