Extron electronic 68-1323-01 Hex codes, Looking up the Hex Code, Explanation of Signal Timing

Hex codes

Looking up the Hex Code

1

4

5

1011

1415

1819

2223

2627

3031

3435

3839

4243

2

8

9

To find the hex codes for your individual Extron IR remote control, match your button positions with those in figure 1, then look up the corresponding button number in the hex code table (e.g., button #15 [arrowed] has the hex code 0E).

NYour remote control will not have all the buttons shown. Figure 1 below covers the button combinations of all available Extron IR remote models.

				Hex Code Table
3			(See left for button position)
			Button #	Hex Code	Button #	Hex Code
6			1	00	25	18
		2		01	26	19
7			3	02	27	1A
			4	03	28	1B
12	13	5		04	29	1C
		6		05	30	1D
		7		06	31	1E
16	17	8		07	32	1F
		9		08	33	40
20	21		10	09	34	41
			11	0A	35	42
24	25	12		0B	36	43
		13		0C	37	44
		14		0D	38	45
28	29		15	0E	39	46
		16		0F	40	47
32	33		17	10	41	48
		18		11	42	49
36	37	19		12	43	4A
		20		13	44	4B
40	41	21		14	45	4C
44	45	22		15
			23	16
			24	17

Figure 1 — IR Remote buttons and corresponding transmitted hex codes

Explanation of Signal Timing

A complete command signal is made of a lead pulse, followed by 32 bits (4 bytes) of data, and a repeat pulse as long for as the button is held. The first two bytes contain the Extron device address (which is 00H FFH), the third byte contains the hex coded data (see the table above), and the fourth byte is the inverse of the third byte. The repeat pulse is sent to allow the receiver to know that the button is still being held.

1IR Remote Control Hex Codes and Signal Timing • Hex Codes