I-33
Principle of Sensor Emission & Reception
The Key Emission sheet incorporates 12 LEDs, where each LED is assigned to a different key in the scale: from
A to G#. The Key Receive sheet incorporates 8 photoreceptors, one for each octave. The combination of LED and
photoreceptor uniquely identifies each key on the keyboard.
Emission & Reception Design
The 12 LEDs fire sequentially, from A to G#. (They do not fire simultaneously.) The receiving side detects the
octave, thereby uniquely identifying the key.
LED
Sequential
firing
1A
2A#
3B
4C
5C#
6D
7D#
8E
9F
10F# 11G 12G#
1A
2A#
3B
4C
5C#
6D
7D#
8E
9F
10F# 11G 12G#
1
13A 14A# 15B
16C 17C# 18D 19D# 20E
21F 22F# 23G 24G#
13A 14A# 15B
16C 17C# 18D 19D# 20E
21F 22F# 23G 24G#
2
25A 26A# 27B
28C 29C# 30D 31D# 32E
33F 34F# 35G 36G#
25A 26A# 27B
28C 29C# 30D 31D# 32E
33F 34F# 35G 36G#
3
37A 38A# 39B
40C 41C# 42D 43D# 44E
45F 46F# 47G 48G#
37A 38A# 39B
40C 41C# 42D 43D# 44E
45F 46F# 47G 48G#
4
49A 50A# 51B
52C 53C# 54D 55D# 56E
57F 58F# 59G 60G#
49A 50A# 51B
52C 53C# 54D 55D# 56E
57F 58F# 59G 60G#
5
61A 62A# 63B
64C 65C# 66D 67D# 68E
69F 70F# 71G 72G#
61A 62A# 63B
64C 65C# 66D 67D# 68E
69F 70F# 71G 72G#
6
73A 74A# 75B
76C 77C# 78D 79D# 80E
81F 82F# 83G 84G#
73A 74A# 75B
76C 77C# 78D 79D# 80E
81F 82F# 83G 84G#
7
85A 86A# 87B
88C
85A 86A# 87B
88C
8
Emission Sheet
Receive Sheet
Example: Detection of Key 25A
Sensor
A#
B
C
C#
D
D#
E
F
F#
G
G#
A
Содержание MX-1
Страница 1: ...HYBRID PIANO PRODUCT HANDBOOK FOR THE PIANO TECHNICIAN MHB19 00 08 CR Printed in Japan ...
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Страница 7: ...I 1 Part I Product Description ...
Страница 8: ...I 0 ...
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Страница 51: ...II 1 Part II Servicing ...
Страница 52: ...II 0 ...
Страница 68: ...II 16 Grand models The following label is attached to the inside cover of the pedal drive unit MarkII ...
Страница 105: ...II 53 ...
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