HP-237R - Nicht kategorisiert ROLAND - Kostenlose Bedienungsanleitung

Produkttyp	Digitalpiano / MIDI-Keyboard
Abmessungen (Breite x Tiefe x Höhe)	ca. 1350 x 350 x 800 mm
Gewicht	ca. 40 kg
Stromversorgung	Netzteil (DC 12 V)
Tastatur	88 Tasten, gewichtet
Polyphonie	64 Stimmen (typisch)
Klänge	10 Einzelklänge, 40 Kombinationen (Dual/Split)
Effekte	Hall, Chorus, Resonanz
MIDI	MIDI In/Out, Kanal 1-16, System Exclusive
Stimmung	Master Fine Tuning (RPN #1), verschiedene Temperamente
Bedienelemente	Lautstärke, Klangwahl, Effekte, Transponierung
Anschlüsse	Kopfhörer, MIDI, Pedal, Line Out (vermutlich)
Zubehör	Notenpult, Netzteil, Bedienungsanleitung
Reinigung	Mit weichem, trockenem Tuch; keine Lösungsmittel
Sicherheit	Nicht in Feuchtigkeit verwenden, nur vom Fachmann reparieren lassen

Häufig gestellte Fragen - HP-237R ROLAND

Wie kann ich die Lautstärke am HP-237R einstellen?

Welche MIDI-Controller werden vom HP-237R unterstützt?

Wie kann ich die Stimmung des HP-237R ändern?

Wie schalte ich zwischen verschiedenen Klängen um?

Wie aktiviere ich den Dual- oder Split-Modus?

Was bedeutet die 'Reset All Controllers'-Funktion?

Kann ich externe Effekte wie Hall und Chorus steuern?

Wie sende ich ein System-Exklusiv-Update für den Hall?

Welche Temperamente sind verfügbar?

Wie überprüfe ich die Softwareversion?

BEDIENUNGSANLEITUNG HP-237R ROLAND

1. Receive Data

■Channel Voice Messages

- Note off

Status 2nd byte 3rd byte ____

8nH kkH vvH

9nH kkH (10H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

kk = note number: 00H-7FH (0-127)

vv = note off velocity : 00H-7FH (0-127)

* The velocity values of Note Off messages are ignored.

- Note on

Status 2nd byte 3rd byte ____

9nII kkII vvII

n = MIDI channel number : 0H-FH (ch.1-ch.16)

kk = note number: 00H-7FH (0-127)

vv = note on velocity: 01H-7FH (1-127)

* Note numbers outside the range of 15-113 are transposed to the nearest octave within this range.
* Transpose function does not affect the recognized note numbers.

•Control Change

* The value specified by a Control Change message will not be reset even by a Program Change, etc.

○Data Entry (Controller number 6, 38)

Status 2nd byte 3rd byte ____

BnH 06H mmH

BnH 26H III

n = MIDI channel number : 0H-FH (ch.1-ch.16) mm, ll = the value of the parameter specified by RPN

○Volume (Controller number 7)

Status 2nd byte 3rd byte ____

BnH 07H vvH

n = MIDI channel number : 0H-FH (ch.1-ch.16) vv = Volume: 00H-7FH (0-127), Initial Value = 7FH (127)

* Received volume messages affect received note event levels, and cannot affect internal keyboard notes.

○Expression (Controller number 11)

Status 2nd byte 3rd byte ____

BnH 0BH vvH

n = MIDI channel number : 0H-FH (ch.1-ch.16) vv = Expression : 00H-7FH (0-127), Initial Value = 7FH (127)

* These message can affect only MIDI notes.

○Hold 1 (Controller number 64)

Status 2nd byte 3rd byte

BnH 40H vvH

n = MIDI channel number : 011-F11 (ch.1-ch.16) vv = Control value : 00H-7FH (0-127) 0-63 = OFF, 64-127 = ON

* These message can affect only MIDI notes.

○Sostenuto (Controller number 66)

Status 2nd byte 3rd byte ____

BnH 42H vvH

* These message can affect only MIDI notes.

n=MIDI channel number: 0H-FH (ch.1-ch.16) vv=Control value: 00H-7FH (0-127) 0-63 = OFF 64-127 = ON

* These message can affect only MIDI notes.

○Soft (Controller number 67)

Status 2nd byte 3rd byte ____

BnH 43H vvH

n=MIDI channel number: 0H-FH (ch.1-ch.16) vv=Control value: 00I1-7FII (0-127) 0-63 = OFF 64-127 = ON

* These message can affect only MIDI notes.

○Effect 1 (Reverb Send Level) (Controller number 91)

Status 2nd byte 3rd byte ____

BnH 5BH vvH

n=MIDI channel number: 011-FH (ch.1-ch.16) vv=Control value: 00H-7FH (0-127) 0-63 = OFF 64-127 = ON

○Effect 3 (Chorus Send Level) (Controller number 93)

Status 2nd byte 3rd byte ____

BnH 5DH vvH

n=MIDI channel number: 0H - FH (ch.1 - ch.16) vv=Control value: 00I1 - 7FII (0 - 127) 0-63=OFF 64-127=ON

○RPN MSB/LSB (Controller number 100, 101)

Status 2nd byte 3rd byte ____

BnH 65H mmH

BnH 64H 11H

n = MIDI channel number: 0H-FH (ch.1-ch.16) mm = upper byte of parameter number specified by RPN ll = lower byte of parameter number specified by RPN

* The value specified by RPN will not be reset even by messages such as Program Change or Reset All Controller.

\*\*RPN\*\*

The RPN (Registered Parameter Number) messages are expanded control changes, and each function of an RPN is described by the MIDI Standard. To use these messages, you must first use RPN MSB and RPN LSB messages to specify the parameter to be controlled, and then use Data Entry messages to specify the value of the specified parameter. Once an RPN parameter has been specified, all Data Entry messages received on that channel will modify the value of that parameter. To prevent accidents, it is recommended that you set RPN Null (RPN Number = 7FII/7FII) when you have finished setting the value of the desired parameter.

On the HP-237, RPN can be used to modify the following parameters.

RPN Data entry

MSB LSB MSB LSB Explanation 00H 01H mmH IIH Master Fine Tuning

mm, ll: 00 0011 - 40 0011 - 7F 7F11

(-100) - 0 - +99.99 cents),

Initial Value = 40 00H (±0 cent)

7FH 7FH --- — RPN null

Set condition where RPN and NRPN are unspecified. The data entry messages after set RPN null will be ignored. (No Data entry messages are required after RPN null). Settings already made will not change. mm, ll: ignored

- Program Change

Status 2nd byte

CnII pplI

n = MIDI channel number: 0H-FH (ch.1-ch.16)

pp = Program number: 00H..2CH (prog.1..prog.45)

Received program change message are assigned as follows.

prog. tone

1 Piano 1

2 Piano 2

3---

4 Harpsichord

5 Vibraphone

6 Electric Piano 1

7 Electric Piano 2

8 Pipe Organ

9 Strings

10 Piano1 + Piano2

11 Piano1 + Harpsichord

12 Piano1 + Vibraphone

13 Piano + Electric Piano

14 Piano1 + Electric Piano2

15 Piano1 + Pipe Organ

16 Piano1 + Strings

17 Piano2 + Harpsichord

18 Piano2 + Vibraphone

19 Piano2 + Electric Piano1

20 Piano2 + Electric Piano2

21 Piano2 + Pipe Organ

22 Piano2 + Strings

23 Harpsichord + Vibraphone

24 Harpsichord + Electric Piano1

25 Harpsichord + Electric Piano2

26 Harpsichord + Pipe Organ

27 Harpsichord + Strings

28 Vibraphone + Electric Piano1

29 Vibraphone + Electric Piano2

30 Vibraphone + Pipe Organ

31 Vibraphone + Strings

32 Electric Piano1 + Electric Piano2

33 Electric Piano1 + Pipe Organ

34 Electric Piano1 + Strings

35 Electric Piano2 + Pipe Organ

36 Electric Piano2 + Strings

37 Pipe Organ + Strings

38 Piano1 + Acoustic Bass

39 Piano2 + Acoustic Bass

40 Harpsichord + Strings

41 Vibraphone + Acoustic Bass

42 Electric Piano1 + Acoustic Bass

43 Electric Piano2 + Acoustic Bass

44 Harpsichord + Pipe Organ

45 Piano1 + Strings

* 10-37 are in Dual Play mode.

* 38-45 are in Split Play mode.

* Any Program Number other than those listed above that are received by the HP-237 are ignored.

* After a Program Change message is received, the sound will change beginning with the next Note-on. Voices already sounding when the Program Change message was received will not be affected.

■Channel Mode Messages

- Reset All Controllers (Controller number 121)

Status 2nd byte 3rd byte

Bn1179110011

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* When this message is received, the following controllers will be set to their reset values.

Controller Reset value

Expression 127 (max)

Hold 10 (off)

Sostenuto 0(off)

Soft 0(off)

- Local Control

Status 2nd byte 3rd byte

BnH 7BH 00H

BnI17AII vvII

n=MIDI channel number: 0H - FH (ch.1 - ch.16)

vv=Value: 00H, 7FH (0, 127) 0=OFF 127=ON

• All Notes Off (Controller number 123)

Status 2nd byte 3rd byte

Bn117B110011

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* When All Notes Off is received, all notes on the corresponding channel will be turned off. However if Hold 1 or Sostenuto is ON, the sound will be continued until these are turned off.

• OMNI OFF (Controller number 124)

Status 2nd byte 3rd byte

BnH 7CH 00H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* The instrument will behave in the same way as it does when an "All Notes Off" message is received. The mode will be OMNI OFF, POLY (Mode 3).

• OMNI ON (Controller number 125)

Status 2nd byte 3rd byte

BnH 7DH 00H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* The instrument will behave in the same way as it does when an "All Notes Off" message is received. The mode will be OMNI ON, POLY (Mode 1).

•MONO (Controller number 126)

Status 2nd byte 3rd byte

BnH 7EH mmH

n = MIDI channel number : 0H-FH (ch.1-ch.16)

mm = mono number: 00H-10H (0-16)

* The same processing will be carried out as when All Notes Off is received.

•POLY (Controller number 127)

Status 2nd byte 3rd byte

BnH 7F H (OH)

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* The same processing will be carried out as when All Notes Off is received.

■System Realtime Message

•Active Sensing

Status FEI1

* When Active Sensing is received, the unit will begin monitoring the intervals of all further messages. While monitoring, if the interval between messages exceeds 360 msec, the same processing will be carried out as when All Notes Off and Reset All Controllers are received, and message interval monitoring will be halted.

■System Exclusive Message

Status Data byte Status

FOH iii1, dd11, .....,ee1 F7H

FOH: System Exclusive Message status

ii = ID number: an ID number (manufacturer ID) to indicate the manufacturer whose Exclusive message this is. Roland's manufacturer ID is 41H. ID numbers 7EII and 7FII are extensions of the MIDI standard; Universal Non-realtime Messages (7EH) and Universal Realtime Messages (7FH).

dd,...,ee = data: 00H-7FH (0-127)

F7H: EOX (End Of Exclusive)

The System Exclusive Messages received by the HIP-237 are; Universal Non-realtime System Exclusive messages, and Data Set (DT1).

- Universal Non-realtime System Exclusive Messages

○Identity Request Message

Status Data byte Status

F0H 7FH, dev, 06H, 01H F7H

Byte Explanation

FOH Exclusive status

7FH ID number (universal non-realtime message)

dev Device ID (dev: UNIT#-1)

06H Sub ID#1 (General Information)

01H Sub ID#2 (Identity Request)

F7H EOX (End Of Exclusive)

* When Identity Request is received, Identity Reply message will be transmitted.

* Even if the Device ID is 7FII(Broadcast), Identity Reply message will be transmitted.

* The "dev" is own device number (UNIT#-1) or 7FH (Broadcast).

* UNIT# is always the same as the current MIDI Tx/Rx channel.

•Data transmission

HP-237 can transmit and receive the various parameters using System Exclusive messages. The exclusive message of HP-237 data has a model ID of 1AH, and device ID is defined by MIDI UNIT NUMBER.

UNIT NUMBER is always the same as the current MIDI Tx/Rx channel.

○Data set 1 DT1

This is the message that actually performs data transmission, and is used when you wish to transmit the data.

Status Data byte Status

F0H 41H, dev, 1AH, 12H, aaH, bbH, ddH, sum F7H

Byte Explanation

FOH Exclusive status

41H ID number (Roland)

dev Device ID (dev: UNIT#-1)

1AH Model ID (HP-237)

12H Command ID (DT1)

aaH Address MSB: upper byte of the starting address of the transmitted data

bbH Address LSB: lower byte of the starting address of the transmitted data

ddH Data: the actual data to be transmitted.

sum Checksum

F7H EOX (End Of Exclusive)

* If "Data Set 1" is transmitted successively, there must be an interval of at least 40 msec between packets.

* Regarding the address please refer to section 3 (Parameter Address Map).

* Regarding the checksum please refer to section 4 (Supplementary material).

2. Transmit Data

■Channel Voice Messages

- Note off

Status 2nd byte

3rd byte

8nH kkH 40H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

kk = note number: 0FH-71H (15-113)

- Note on

Status 2nd byte

3rd byte

9nH kkH vvH

n = MIDI channel number : 0H-FH (ch.1-ch.16)

kk = note number: 0FH-71H (15-113)

vv = note on velocity : 01H-7FII (1-127)

* Note number's range can be changed with Key Transpose and Octave Shift.

- Control Change

* The value specified by a Control Change message will not be reset even by a Program Change, etc.

○Data Entry (Controller number 6, 38)

Status 2nd byte

3rd byte

BnH

06H mmH

BnH

26H11H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

mm, ll = the value of the parameter specified by RPN

* Data Entry is sent through the basic channel.

○Hold 1 (Controller number 64)

Status 2nd byte

3rd byte

BnH

40H vvH

n = MIDI channel number : 0H-FH (ch.1-ch.16)

vv = Control value : 00H,7FH (0, 127) 0 = OFF, 127 = ON

○Sostenuto (Controller number 66)

Status 2nd byte

3rd byte

BnH

42H vvH

n = MIDI channel number : 0I I-FH (ch.1-ch.16)

vv = Control value : 00H,7FH (0, 127) 0 = OFF, 127 = ON

○Soft (Controller number 67)

Status 2nd byte

3rd byte

BnH

43H vvH

n=MIDI channel number : 0H-FH (ch.1 - ch.16)

vv=Control value: 00H,7FH (0, 127) 0 = OFF, 127 = ON

○Effect 1 (Reverb Send Level) (Controller number 91)

Status 2nd byte

3rd byte

BnH

5BH vvH

n=MlDI channel number : 0H - FH (ch.1 - ch.16)

vv=Control value: 00H,7FH (0, 127) 0 = OFF, 127 = ON

○RPN MSB/LSB (Controller number 100, 101)

Status 2nd byte

3rd byte

BnI1

65H mmH

BnH

64H 11H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

mm = upper byte of parameter number specified by RPN

ll = lower byte of parameter number specified by RPN

* RPN is sent through the basic channel.

**RPN**

HP-237 can transmit Master fine tuning (RPN #1) and RPN null. After sending the master fine tune, immediately the RPN Null shall be sent.

RPN Data entry

MSB LSB MSB LSB Explanation

00H 01H mmH IIH Master Fine Tuning

mm, ll: 00 00H - 40 00H - 7F 7FH

(-100 - 0 - +99.9 cents)

7FH 7FH --- RPN null

- Program Change

Status 2nd byte

CnH ppH

n = MIDI channel number : (IH-FH (ch.1-ch.16)

pp = Program number: 00H..2CH (prog.1..prog.45)

* For the correspondence between Program Change numbers and Tones, please refer to "Program Change" in "1. Receive Data."

■System Realtime Message

•Active sensing

Status

FEH

* This will be transmitted constantly at intervals of approximately 210 msec.

■System exclusive messages

"Identity Reply" and "Data Set 1 (DT1)" are the only System Exclusive messages transmitted by HIP-237.

The exclusive message of HP-237 data has a model ID of 1AH, and device ID is defined by MIDI UNIT NUMBER.

UNIT NUMBER is always the same as the current MIDI Tx/Rx channel.

•Universal Non-realtime System Exclusive Messages

○Identity Reply

Status Data byte Status

F0H 7EH, dev, 06H, 02H, 41H, 1AH, 00H, 03H, 02H, 00H, 01H, 00H, 00H, F7H

Byte Explanation

FOH Exclusive status

7EH ID number (universal non-realtime message)

dev Device ID (dev: UNIT#-1)

06H Sub ID#1 (General Information)

02H Sub ID#2 (Identity Reply)

41H ID number (Roland)

1AH Device family code (LSB)

0011 Device family code (MSB)

03H Device family number code (LSB)

02H Device family number code (MSB)

00H 01H 00H 00H Software revision level

F7H FOX (End of Exclusive)

* When Identity Request is received, Identity Reply message will be transmitted.

- Data transmission

○Data set 1 DT1

Status Data byte	Status
F0H	41H, dev, 1AH, 12H, aaH, bbH, ddH, sum	F7H

Byte Explanation

FOH Exclusive status

4111 ID number (Roland)

dev Device ID (dev: UNIT#-1)

1AH Model ID (HP-237)

12H Command ID (DT1)

aaH Address MSB: upper byte of the starting address of the data to be sent

bbII Address LSB: lower byte of the starting address of the data to be sent.

ddH Data: the actual data to be sent.

sum Checksum

F7H1 EOX (End Of Exclusive)

* Regarding the address please refer to section 3 (Parameter Address Map).

* Regarding the checksum please refer to section 4 (Supplementary material).

3. Parameter Address Map (Model ID = 1AH)

All the numbers of address, size, Data, and Default Value are indicated in 7-bit Hexadecimal-form.

address (H)	data (H)	Description
00 05	0ttt kkkk	Temperament Select (*1)ttt (OH - 7A), kkkk (OH - BH)
01 01	00-7F	Chorus Type00H - 0FH : Type 110H - 1FH : Type 220H - 2FH : Type 330H - 3FH : Type 440H - 4FH : Type 550H - 5FH : Type 660H - 6FH : Type 770H - 7FH : Type 8
01 03	00-7F	Reverb Type00H - 0FH : Type 110H - 1FH : Type 220H - 2FH : Type 330H - 3FH : Type 440H - 4FH : Type 550H - 5FH : Type 660H - 6FH : Type 770H - 7FH : Type 8
01 06	00-7F	Resonance Type00H - 0FH : OFF10H - 1FH : Type 120H - 2FH : Type 230H - 3FH : Type 340H - 4FH : Type 450H - 5FH : Type 560H - 6FH : Type 670H - 7FH : Type 7
01 0A	00,01	Stretch Tune00H : OFF01H : ON

(*1) Temperament Select

ttt 0H-6H: temperament select

kkkk 011 - B11 : key signature

Temperament change value are assigned as follows:

* When EQUAL temperament tuning is selected, the key signature change is ignored.

	key signature (kkkk)
temperament select(ttt)	C(0)	C#(1)	D(2)	D#(3)	E(4)	F(5)	F#(6)	G(7)	G#(8)	A(9)	A#(A)	B(B)
EQUAL(0)	00	01	02	03	04	05	06	07	08	09	0A	0B
JUST (major)(1)	10	11	12	13	14	15	16	17	18	19	1A	1B
JUST (minor)(2)	20	21	22	23	24	25	26	27	28	29	2A	2B
MEAN TONE(3)	30	31	32	33	34	35	36	37	38	39	3A	3B
WERCKMEISTER(4)	40	41	42	43	44	45	46	47	48	49	4A	4B
KIRNBERGER(5)	50	51	52	53	54	55	56	57	58	59	5A	5B
PYTHAGOREAN(6)	60	61	62	63	64	65	66	67	68	69	6A	6B

(numbers are hexa_decimal)

4. Supplementary material

- Decimal and Hexadecimal table

In MIDI documentation, data values and addresses/sizes of exclusive messages etc. are expressed as hexadecimal values for each 7 bits.

The following table shows how these correspond to decimal numbers.

Dec.	Hex.	Dec.	Hex.	Dec.	Hex.	Dec.	Hex.
0	00H	32	20H	64	40H	96	60H
1	01H	33	21H	65	41H	97	61H
2	02H	34	22H	66	42H	98	62H
3	03H	35	23H	67	43H	99	63H
4	04H	36	24H	68	44H	100	64H
5	05H	37	25H	69	45H	101	65H
6	06H	38	26H	70	46H	102	66H
7	07H	39	27H	71	47H	103	67H
8	08H	40	28H	72	48H	104	68H
9	09H	41	29H	73	49H	105	69H
10	0AH	42	2AH	74	4AH	106	6AH
11	0BH	43	2BH	75	4BH	107	6BH
12	0CH	44	2CH	76	4CH	108	6CH
13	0CH	45	2DH	77	4DH	109	6DH
14	0EH	46	2EH	78	4EH	110	6EH
15	0FH	47	2FH	79	4FH	111	6FH
16	10H	48	30H	80	50H	112	70H
17	11H	49	31H	81	51H	113	71H
18	12H	50	32H	82	52H	114	72H
19	13H	51	33H	83	53H	115	73H
20	14H	52	34H	84	54H	116	74H
21	15H	53	35H	85	55H	117	75H
22	16H	54	36H	86	56H	118	76H
23	17H	55	37H	87	57H	119	77H
24	18H	56	38H	88	58H	120	78H
25	19H	57	39H	89	59H	121	79H
26	1AH	58	3AH	90	5AH	122	7AH
27	1BH	59	3BH	91	5BH	123	7BH
28	1CH	60	3CH	92	5CH	124	7CH
29	1DH	61	3DH	93	5DH	125	7DH
30	1EH	62	3EH	94	5EH	126	7EH
31	1FH	63	3FH	95	5FH	127	7FH

* Decimal values such as MIDI channel and program change are listed as one (1) greater than the values given in the above table.
* A 7-bit byte can express data in the range of 128 steps. For data where greater precision is required, we must use two or more bytes. For example, two hexadecimal numbers aa bbH expressing two 7-bit bytes would indicate a value of aa x 128 + bb.
What is the decimal expression of 5AH? From the preceding table, 5AII = 90
What is the decimal expression of the value 12 34H given as hexadecimal for each 7 bits?
From the preceding table, since 12H = 18 and 34H = 52 18 × 128 + 52 = 2356

•Examples of actual MIDI messages

92 3E 5F

9n is the Note-on status, and n is the MIDI channel number. Since 2H = 2, 3E11 = 62, and 5FH = 95, this is a Note-on message with MIDI CH = 3, note number 62 (note name is D4), and velocity 95.

CE 08

CnI I is the Program Change status, and n is the MIDI channel number. Since EII = 14 and 08H = 08, this is a Program Change message with MIDI CH = 15, program number 08 (Strings in HP-237).

B3 64 00 65 01 06 40 26 00 64 7F 65 7F

BnH is the Control Change status, and n is the MIDI channel number. For Control Changes, the 2nd byte is the control number, and the 3rd byte is the value. In a case in which two or more messages consecutive messages have the same status, MIDI has a provision called "running status" which allows the status byte of the second and following messages to be omitted. Thus, the above messages have the following meaning.

B3 6400 MIDI ch.4, lower byte of RPN parameter number: 00H

(B3) 65 01 (MIDI ch.4) upper byte of RPN parameter number: 01H

(B3) 06 40 (MIDI ch.4) upper byte of parameter value: 40H

(B3) 26 00 (MIDI ch.4) lower byte of parameter value: 0011

(B3) 647F (MIDI ch.4) lower byte of RPN parameter number: 7FH

(B3) 65 7F (MIDI ch.4) upper byte of RPN parameter number: 7FH

In other words, the above messages specify a value of 40 00H for RPN parameter number 00 01II (Master Fine Tuning) on MIDI channel 4, and then set the RPN parameter number to 7F 7PH (RPN null).

Once the parameter number has been specified for RPN, all Data Entry messages transmitted on that same channel will be valid, so after the desired value has been transmitted, it is a good idea to set the parameter number to 7F 7FH to prevent accidents. This is the reason for the (B3) 64 7F (B3) 65 7F at the end.

- Example of an Exclusive message and calculating a Checksum

Roland Exclusive messages (DT1) are transmitted with a checksum at the end (before F7) to make sure that the message was correctly received. The value of the checksum is determined by the address and data of the transmitted exclusive message.

○How to calculate the checksum (hexadecimal numbers are indicated by 'H')

The checksum is a value derived by adding the address, size and checksum itself and inverting the lower 7 bits. Here's an example of how the checksum is calculated. We will assume that in the exclusive message we are transmitting, the address is aa bb and the data or size is ccH.

aa + bb + cc = sum

sum / 128 = quotient ... remainder

128 - remainder = checksum

Set "Reverb Type" to "Type 4"

According to the Parameter Address Map, the Address of Reverb Type is 01 03H, and the Value corresponding to Type 4 is 30H.

So, the message should be :

F0 41 00 1A 12 01 03 30 ?? F7

(1) (2) (3) (4) (5) address data checksum (6)

(1) Exclusive Status, (2) ID (Roland), (3) Device ID (UNIT#-1), (4) Model ID (HP-237),

(5) Command ID (DT1), (6) End of Exclusive

* UNIT NUMBER is always the same as the current MIDI Tx/Rx channel. In this example, the MIDI Tx/Rx channel is 1.

Next we calculate the checksum.

01H + 03H + 30H = 1 + 3 + 48 = 52 (sum)

52 (sum) ÷ 128 = 0 (quotient) ... 52 (remainder)

checksum = 128 - 52 (remainder) = 76 = 4CH

Therefore, the message to send is : F0 41 00 1A 12 01 03 30 4C F7

- About tuning

HP-237 is tuned by sending RPN #1 (Master Fine Tuning) to the appropriate MIDI Rx channel.

RPN #1 allows tuning to be specified in steps of approximately 0.012 cents (to be precise, 100/8192 cent). One cent is 1/100th of a semi-tone.

Frequently used tuning values are given in the following table for your reference.

Values are in hexadecimal (decimal in parentheses).

Hz at A4	cent	RPN #1
445.0	+19.56	4C 42 (+1603)
444.0	+15.67	4A 03 (+1283)
443.0	+11.76	47 44 (+ 964)
442.0	+ 7.85	45 03 (+ 643)
441.0	+ 3.93	42 42 (+ 322)
440.0	0	40 00 ( 0 )
439.0	- 3.94	3D 3D (- 323)
438.0	- 7.89	3A 7A (- 646)

Set the tuning of HP-237 to A4 = 442.0 Hz

Send RPN#1 to basic channel. From the above table, the value is 45 03H.

If the MIDI Tx/Rx channel is set to ch.1, below is the message we transmit.

B0 64 00 MIDI ch.1, lower byte of RPN parameter number: 00H

(B0) 65 01 (MIDI ch.1) upper byte of RPN parameter number: 01H

(B0) 06 45 (MIDI ch.1) upper byte of parameter value: 45H

(B0) 26 03 (MIDI ch.1) lower byte of parameter value: 03H

(B0) 64 7F (MIDI ch.1) lower byte of RPN parameter number: 7FH

(B0) 65 7F (MIDI ch.1) upper byte of RPN parameter number: 7FH