Extron IR 801 User manual

Brand: Extron

Model: IR 801

Type: User manual

User’s Guide

68-1323-01

Rev. A

10 06

IR Remote Control

Hex Codes and Signal Timing

Guide to Hex Codes and Signal Timing for

Extron IR Remote Controls

System Remote

VSC Remote

PRESETS

INPUTS

ZOOM

STORE

432

Hex codes

IR Remote Control Hex Codes and Signal Timing • Hex Codes

Looking up the Hex Code

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).

N Your remote control will not have all the buttons shown.

Figure 1 below covers the button combinations of all

available Extron IR remote models.

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.

Figure 1 — IR Remote buttons and corresponding

transmitted hex codes

1 2 3

10 11 12 13

14 15 16 17

18 19 20 21

22 23 24 25

26 27 28 29

30 31 32 33

34 35 36 37

38 39 40 41

42 43 44 45

5 7

Hex Code Table

(See left for button position)

Button # Hex Code

1 00

2 01

3 02

4 03

5 04

6 05

7 06

8 07

9 08

10 09

11 0A

12 0B

13 0C

14 0D

15 0E

16 0F

17 10

18 11

19 12

20 13

21 14

22 15

23 16

24 17

Button # Hex Code

25 18

26 19

27 1A

28 1B

29 1C

30 1D

31 1E

32 1F

33 40

34 41

35 42

36 43

37 44

38 45

39 46

40 47

41 48

42 49

43 4A

44 4B

45 4C

Signal Timing

IR Remote Control Hex Codes and Signal Timing • Signal Timing

Carrier Frequency = 38 KHz

(50% duty cycle)

9 ms

4.5 ms

Carrier On

Carrier Off

Carrier Off Carrier On Carrier Off

9 ms

0.56 ms

2.5 ms

Tf = 108 ms Tf = 108 ms

Lead Code

1st Frame

Repeat Code

0.56 ms

Lead Code

Repeat Code

Bytes 1-4

Bit “0”

1.125 ms

0.56 ms

Bit “1”

2.25 ms

Bit Description

0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7

Code

Inverse Code

Device Address

Byte 1

Byte 2

General Signal Timing with Code Positions

9 ms

4.5 ms

Lead Code

Code

Inverse Code

1st Frame

0 0 0 0 1 1 1 0

1 1 1 1 0 0 0 1

Device Address

Byte 1

Byte 4

Byte 3

Byte 2

Data Bits Transmitted

Hex Code Equivalent

0 0 0 0 0 0 0 0

1 1 1 1 1 1 1 1

Example

The ﬁgure below shows the transmitted signal to represent a

single press of button #15.

Extron Electronics, USA

1230 South Lewis Street

Anaheim, CA 92805

USA

714.491.1500

Fax 714.491.1517

Extron Electronics, Europe

Beeldschermweg 6C

3821 AH Amersfoort

The Netherlands

+31.33.453.4040

Fax +31.33.453.4050

Extron Electronics, Asia

135 Joo Seng Road, #04-01

PM Industrial Building

Singapore 368363

+65.6383.4400

Fax +65.6383.4664

Extron Electronics, Japan

Kyodo Building

16 Ichibancho

Chiyoda-ku, Tokyo 102-0082 Japan

+81.3.3511.7655

Fax +81.3.3511.7656

www.extron.com

Extron IR 801 User manual

Extron IR 801 User manual

Related papers

Other documents