Chief Manufacturing CM2 installation instructions IR System Code

Installation Instructions CM2

NEC Protocol:

The modulated carrier is usually derived from 455kHz and is 1/12 of the frequency with 1/3 duty cycle.

When data are transmitted repeatedly, the frame cycle is 107.9ms or 186 period.

A frame consists of a syn pulse, an eight-bit custom code, an eight-bit inverted custom code, an eight-bit data code and an eight-bit inverted data code.

The timing definitions of the output code waveform are shown below.

Table 1-1: IR System Code

Switch # 1	Switch # 2	Switch # 3	Custom Code
Off	Off	Off	6E
On	Off	Off	E1
Off	On	Off	E2
On	On	Off	E3
Off	Off	On	E4
On	Off	On	E5
Off	On	On	E6
On	On	On	E7

IR code is selected by Dipswitch settings, dipswitches are located next to power inlet.

Figure 30

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