Roland GI-20 owner manual Data set 1 DT1 12H

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Chapter 5 Appendices

*The size of the requested data does not indicate the number of bytes that will make up a DT1 message, but represents the address fields where the requested data resides.

*Some models are subject to limitations in data format used for a single transaction. Requested data, for example, may have a limit in length or must be divided into predetermined address fields before it is exchanged across the interface.

*The same number of bytes comprises address and size data, which, however, vary with the Model ID.

*The error-checking process uses a checksum that provides a bit pattern where the last 7 bits are zero when values for an address, size, and that checksum are summed.

•Data set 1: DT1 (12H)

This message corresponds to the actual data transfer process.

Because every byte in the data is assigned a unique address, a DT1 message can convey the starting address of one or more bits of data as well as a series of data formatted in an address-dependent order.

The MIDI standards inhibit non real-time messages from interrupting an Exclusive one. This fact is inconvenient for devices that support a “soft-thru” function. To maintain compatibility with such devices, Roland has limited the DT1 to 256 bytes so that an excessively long message is sent out in separate ‘segments’.

Byte

Description

F0H

Exclusive Status

41H

Manufacturer ID (Roland)

DEV

Device ID

MDL

Model ID

12H

Command ID

aaH

Address MSB

 

LSB

ddH

Data MSB

 

LSB

sum

Check sum

F7H

End of exclusive

 

 

*A DT1 message is capable of providing only the valid data among those specified by an RQ1 message.

*Some models are subject to limitations in data format used for a single transaction. Requested data, for example, may have a limit in length or must be divided into predetermined address fields before it is exchanged across the interface.

*The number of bytes comprising address data varies from one Model ID to another.

*The error-checking process uses a checksum that provides a bit pattern where the last 7 bits are zero when values for an address, size, and that checksum are summed.

•Example of Message Transactions

•Device A sending data to Device B

Transfer of a DT1 message is all that takes place.

Device A

[Data set 1] * More than 20m sec time interval.

[Data set 1]

[Data set 1]

Device B

•Device B requesting data from Device A

Device B sends an RQ1 message to Device A.

Checking the message, Device A sends a DT1 message back to Device B.

Device A

[Data set 1] * More than 20m sec time interval.

[Data set 1]

Device B

[Request data]

[Data set 1]

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Contents Using the Unit Safely page 2-3 and Important Notes Main FeaturesPage For the U.K Additional Precautions Power SupplyPlacement MaintenanceContents Front Panel Rear Panel Signal Flow Guitars That Cannot Be Used with the GK-2A/GK-2B Installing the Divided Pickup on the Guitar or BassItems to Have On Hand About MidiConnection Examples Selecting the Guitar or BassPreparations to Make Before Performing Playing Sounds from a Sound Module Turning On the PowerAdjusting the Input Sensitivity Turning Off the PowerSystem Parameters What is a Patch?Selecting Patches System Parameters and Patch ParametersPatch Parameters How to Switch PatchesWhen Not Switching Patches About the DisplayWhen in Poly Mode Setting the Midi ChannelSetting the Transmission Mode MONO/POLY Setting the Midi Transmit Channel Basic CHSetting the Control Channel CTL CH Control ChangePress PATCH/VALUE to select the Basic channel number Performing on the Guitar Program ChangePress PATCH/VALUE to select the Control channel number Signal Paths That Can Be Selected With Connecting to a ComputerSetting the Midi Port Setting the Midi Data PathSetting the Feeling of the Performance Play Feel Calling Up the Input Sensitivity SettingsSetting the Pedal and Switch Functions Assign Pu Patch Up Functions That Can Be Selected WithController Function 31, 64-95 Midi Control Change CC#1-31, CC#64-95Od Octave Down Pd Patch DownPt Patch Up/Down Ou Octave UpB1 Pitch Bend U4 Glide Up 4/d4 Glide DownU5-u8 Glide Up 5-8/d5-d8 Glide Down V1-V4 VibratoShifting the Pitch of the Sound Transpose Setting the Range in Which Pitches Are Changed Bend RangeSetting the Bend Range Settings That Can Be Selected WithSwitching Sounds on External Devices PRG Change Press PATCH/VALUE to select the save-destination patch Storing the Settings WriteMuting Specific Strings Press WriteConfirm that the GI-20 is set to Play Mode Copying PatchesPress PATCH/VALUE to select the copy-destination patch Tuning Tuner Convenient Functions Featured by the GI-20Off Convenient Functions Featured by the GI-20Receiving Saved Data Using Midi Bulk Load Midi Use a USB cable to connect the computer and the GI-20 Turn the power offReceive Saved Data Through USB Bulk Load USB Bend Data Thin FunctionPress PATCH/VALUE to select 12 or Reducing the Amount of Control Change Data TransmittedLimiting the Extent of the Bend Range Bend Range MAX Receive Control Change Data Thin FunctionSelecting the Type of USB Driver Press PATCH/VALUE to select SP or GE Turn the power offAttaching the Rubber Feet Reset to Default Factory Settings Factory ResetInstalling the Rack Mount Adaptor Turn off the power to the GI-20Pitch doesn’t change smoothly TroubleshootingVolume fluctuates from one string to another Sound doesn’t vary when the settings are changedProblems occur after switching GI-20 patches Pitch is wrong out of tune with the guitar/bassIs Midi Bend Range the same for both sending and receiving? Error Messages ReasonAction Address-mapped Data Transfer One-way Transfer ProcedureRoland Exclusive Messages Data Format for Exclusive MessagesData set 1 DT1 12H Control Change Midi ImplementationChannel Voice Messages System Exclusive MessageChannel Mode Message Appendices Transmit DataSystem Realtime Message Appendices Exclusive Communications Data Set 1 DT1 12HDecimal and Hexadecimal table Midi Implementation Chart GI-20 GK-MIDI Interface SpecificationsGI-20 ComputerClick the Hardware tab, and then click Driver Signing Driver InstallationWith the GI-20 disconnected, start up Windows Open the System Properties dialog boxConnect the GI-20 to your computer Installing & Setting Up the Driver WindowsSwitch on the GI-20’s power switch Prepare the CD-ROMIf What action do you want Windows to take? is set to Block If What action do you want Windows to take? is set to WarnClick Yes Click OKIf you changed What action do you want Windows to take? Next, you need to make the driver settings. pFig.d13 Make sure that File signature verification is set to IgnoreFig.d16 Click Yes Continue the installation If File signature verification is set to WarnIf File signature verification is set to Block Restart Windows If you changed File signature verificationClick the Hardware tab, and then click Driver signature \Win98Me\Setupinf.exe SetupInf dialog box, click OK Settings Open Control PanelWindows XP Set Midi output Windows 98 usersOpen the Multimedia Properties dialog box Click the Midi tabUse either OMS or FreeMIDI as the Midi driver Installing the driverClick Restart to restart your Macintosh Setting the driverInstalling & Setting Up the Driver Macintosh Verify the Install Location, and click InstallOMS Driver Search dialog box will appear. Click Search Create a New Studio setup dialog box will appear. Click OKAfter you have finished the above check, exit OMS Setup My Studio Setup Window, click the keyboard iconFig.d43 About Quick Setup dialog box will appear. Click ContinuePage Find new hardware wizard does not execute automatically Problems related to the USB driverCannot install the driver correctly GI-20 is not detected when making OMS or FreeMIDI settingsTroubleshooting Does your computer meet the USB specifications?Deleting incorrect device information Did you make Driver Signing Options? Can’t install/delete/use the driver in Windows XP/2000Deleting the driver Windows XP/2000 usersMacintosh users Windows Me/98 usersIndex Tuner String SEL IndexAvis Information

GI-20 specifications

The Roland GI-20 is a groundbreaking MIDI guitar converter that allows electric guitarists to explore the vast world of MIDI technology. Designed to bridge the gap between traditional guitar playing and digital music production, the GI-20 transforms standard guitar signals into MIDI data, giving players access to a wide array of synthesized sounds and virtual instruments.

One of the main features of the GI-20 is its ability to track the guitar’s pitch with high accuracy. Utilizing Roland’s advanced technology, the device boasts rapid response times and minimal latency, ensuring that every note plucked or strummed is translated into MIDI in real-time. This precision is crucial for guitarists who wish to maintain their playing style while experimenting with synthesizers and sampled instruments.

In terms of connectivity, the Roland GI-20 is equipped with a 13-pin connector, allowing it to interface seamlessly with compatible Roland synths, sound modules, and other MIDI devices. Additionally, standard MIDI outputs enable connection to MIDI controllers and computers, providing an expansive toolkit for music creation.

The user interface is designed with simplicity in mind. A large LCD display allows for easy navigation of settings, while intuitive controls help players adjust parameters on the fly. Guitarists can also customize their performance by altering the sensitivity levels, enabling them to fine-tune how the device responds to their playing style.

The GI-20 offers an array of built-in sounds that mirror the capabilities of traditional synthesizers. These sounds can be layered or split into different tones based on the player’s preferences, offering a variety of sonic textures to enhance compositions. Furthermore, the ability to save and recall user settings allows for quick access to preferred configurations during live performances.

Another significant characteristic of the GI-20 is its compatibility with a wide range of guitars, including both electric and bass guitars. As long as the instrument is equipped with the appropriate pickup system, the GI-20 can effectively convert its output into MIDI signals.

In summary, the Roland GI-20 is a versatile and innovative tool for guitarists seeking to expand their creative horizons. With its accurate tracking, extensive connectivity, user-friendly interface, and a wealth of sounds, it unlocks the potential for guitarists to dive into the realms of electronic music and MIDI composition. Whether in the studio or on stage, the GI-20 opens up a world of possibilities for musicians looking to blend traditional guitar playing with modern technology.