Roland 420981A Digital Piano with Bluetooth User Manual Roland GOPIANO88 Manual G05 181019 ai

Roland Corporation Digital Piano with Bluetooth Roland GOPIANO88 Manual G05 181019 ai

user manual

CMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   1   2018-10-19   16:54:34Roland_GOPIANO88_Manual_G05_181019.ai   1   2018-10-19   16:54:34
02Before using this unit, carefully read “USING THE UNIT SAFELY” and “IMPORTANT NOTES” (the leaflet “USING THE UNITSAFELY”). After reading, keep the document(s) where it will be available for immediate reference.Copyright © 2017 ROLAND CORPORATIONIntellectual Property Right          It is forbidden by law to make an audio recording, video recording, copy or revision of a third party’s copyrighted work           (musical work, video work, broadcast, live performance, or other work), whether in whole or in part, and distribute,           sell, lease, perform, or broadcast it without the permission of the copyright owner.          Do not use this product for purposes that could infringe on a copyright held by a third party. We assume no responsi          bility whatsoever with regard to any infringements of third-party copyrights arising through your use of this product.          The copyright of content in this product (the sound waveform data, style data, accompaniment patterns, phrase data,           audio loops and image data) is reserved by Roland Corporation.          Purchasers of this product are permitted to utilize said content (except song data such as Demo Songs) for the           creating, performing, recording and distributing original musical works.          Purchasers of this product are NOT permitted to extract said content in original or modified form, for the purpose of           distributing recorded medium of said content or making them available on a computer network.          Roland is an either registered trademark or trademark of Roland Corporation in the United States and/or other           countries.          Company names and product names appearing in this document are registered trademarks or trademarks of their           respective owners.CMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   2   2018-10-19   16:54:37Roland_GOPIANO88_Manual_G05_181019.ai   2   2018-10-19   16:54:37
03Table of ContentsPanel DescriptionFront Panel.................................................................................................................................................................4Rear Panel..................................................................................................................................................................5SetupPower Supply..............................................................................................................................................................5Setting the Music Rest................................................................................................................................................5ConnectionsConnecting a Pair of Headphones..............................................................................................................................6Connecting an Audio Equipment................................................................................................................................6Connecting a Pedal.....................................................................................................................................................6Connecting a Computer..............................................................................................................................................6Adjusting the Master Volume..................................................................................................................................7Playing Demo Songs................................................................................................................................................7TonesSelecting a Tone.........................................................................................................................................................8Layering Two Tones....................................................................................................................................................8Key Touch...................................................................................................................................................................8Reverb.......................................................................................................................................................................9Metronome...............................................................................................................................................................9Tempo......................................................................................................................................................................10Transpose................................................................................................................................................................10Master Tuning.........................................................................................................................................................10Twin Piano...............................................................................................................................................................11Bluetooth.................................................................................................................................................................11MIDI Out...................................................................................................................................................................11Auto Power Off.......................................................................................................................................................12Troubleshooting.....................................................................................................................................................12Specifications........................................................................................................................................................13AppendicesTone List...................................................................................................................................................................13Demo List.................................................................................................................................................................13List of Operations (Button + Key)..............................................................................................................................14MIDI Implementation Chart.......................................................................................................................................15CMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   3   2018-10-19   16:54:37Roland_GOPIANO88_Manual_G05_181019.ai   3   2018-10-19   16:54:37
Panel DescriptionFront Panel1. [POWER] Switch    Turn the power on or off.2. [VOLUME] Knob    Adjust the master volume.3. [FUNCTION] Button    Press and hold it to access secondary functions of     other keys.4. [METRONOME] Button    Press it to turn the metronome on or off.    Press [METRONOME] and [TWIN PIANO] at the     same time to enter Demo mode.5. [TWIN PIANO] Button    Press it to turn the Twin Piano function on or off.    Press [METRONOME] and [TWIN PIANO] at the     same time to enter Demo mode.6. [TONE] Buttons    Press one of these buttons to select a preset tone.7. [Bluetooth] Keys    Press and hold [FUNCTION], then press one of these     keys to disable the related Bluetooth connection.8. [1~9~0] Keys    Press and hold [METRONOME], then press these     keys to enter a tempo value.    Press and hold [METRONOME] and [TWIN PIANO]     at the same time, then press one of these keys to     select a demo song.9. [VOLUME] Keys    Press and hold [FUNCTION] or [METRONOME],     then press one of these keys to adjust the metronome     volume.10. [BEAT] Keys      Press and hold [FUNCTION] or [METRONOME],      then press one of these keys to set the metronome       time signature.11. [TEMPO] Keys      Press and hold [FUNCTION] or [METRONOME],       then press one of these keys to edit the tempo value.12. [Reverb] Keys      Press and hold [FUNCTION], then press one of       these keys to adjust the reverb level.13. [Key Touch] Keys      Press and hold [FUNCTION], then press one of       these keys to select an appropriate touch level.14. [Tuning] Keys      Press and hold [FUNCTION], then press one of       these keys to adjust the current tuning.15. [Transpose] Keys      Press and hold [FUNCTION], then press one of       these keys to adjust the transpose value.04152 43687910 12 13 14 1511CMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   4   2018-10-19   16:54:37Roland_GOPIANO88_Manual_G05_181019.ai   4   2018-10-19   16:54:37
Panel DescriptionSetupRear Panel16. DC IN Jack      Connect the specified power adaptor.17. PHONES/OUTPUT Jack      Connect a pair of stereo headphones or       external audio equipment.18. SUSTAIN Jack      Connect an optional pedal.19. USB Jack      Connect to a computer.Power Supply 1. Before connecting the power supply, please set the [POWER] switch to      “OFF” and set the master volume level to minimum.2. Connect the power adaptor to the DC IN jack on the rear panel.3. Plug the power adaptor into an appropriate AC outlet.4. Press the [POWER] switch. The button LED will light up, indicating the      instrument is powered on.5. When you are ready to turn the instrument off, press and hold the      [POWER] switch for a second. The button LED will turn off.Note:1. In order to save energy, the instrument will automatically shut down after     30 minutes when not in use. (See Auto Power Off).2. For your safety, please unplug the instrument when it is not in use or     during a thunderstorm. Setting the Music RestA music rest is supplied with the instrument. You can easily attach it to the instrument by inserting it into the slots at the rear of the panel. 0516 17 18 19CMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   5   2018-10-19   16:54:38Roland_GOPIANO88_Manual_G05_181019.ai   5   2018-10-19   16:54:38
ConnectionsConnecting a Pair of HeadphonesPlug a pair of standard stereo headphones in the PHONES/OUTPUT jack.Turn on the Phones Sense.Press and hold [FUNCTION], then press the [F7] key to turn on the Phone Sense function. When headphones are connected, the internal speakers system will be muted. Sound can only be heard from the headphones.Turn off the Phone Sense.Press and hold [FUNCTION], then press the [F#7] key to disable the Phone Sense function. When headphones are connected, the sound can be heard from the headphones and speakers.Note: To avoid the risk of hearing loss, do not use headphones at high volume levels for a long period of time. Connecting an Audio Equipment                      The PHONES/OUTPUT jack delivers the output of the instrument to external audio equipment such as a keyboard amplifier, stereo sound system, mixing console, or recording interface.Use an audio cable to connect the PHONES/OUTPUT jack of the instrument to the INPUT jack of the external audio equipment.Notes:                                    1. Turn off the power to all devices before connecting or disconnecting     external equipment. 2. To avoid damaging the speakers, set the master volume level to     minimum before turning on the power.Connecting a PedalAn optional pedal can be plugged into the SUSTAIN jack. When you step on the pedal, the notes you play on the keyboard will have a longer sustain. Connecting a ComputerUse a standard USB cable to connect the USB jack of the instrument to the USB port of a computer. With USB, you can save a keyboard performance to the computer or use the instrument to play back music played on the computer.Note:Do not set the USB MIDI device to be both input and output simultane-ously when configuring the software on your computer. Otherwise, the sound will be overlapped when playing the keyboard.06CMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   6   2018-10-19   16:54:38Roland_GOPIANO88_Manual_G05_181019.ai   6   2018-10-19   16:54:38
Playing Demo SongsThis instrument features 10 wonderful demo songs. Please refer to Demo List for details.Play the demo songs.Press the [METRONOME] and [TWIN PIANO] buttons at the same time to enter Demo mode and start playing the demo songs in a continuous loop. Select a demo song.Press and hold the [METRONOME] and [TWIN PIANO] buttons at the same time, then press one of the keys marked [1~9~0] to select a desired demo song.Stop playing the demo song. Press the [METRONOME] and [TWIN PIANO] buttons at the same time to stop the demo and exit Demo mode.Rotate the [VOLUME] knob clockwise to increase the master volume or counter-clockwise to decrease it. Adjust to set the desired volume level.Note:If the speakers do not produce sound, please check if the mastervolume is set too low. Then check if the speakers are muted because headphones are plugged into the PHONES jack and the Phones Sense function is in use.07Adjusting the Master VolumeCMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   7   2018-10-19   16:54:38Roland_GOPIANO88_Manual_G05_181019.ai   7   2018-10-19   16:54:38
08TonesSelecting a ToneThe instrument features 4 tones. Please refer to Tone List for details.Press one of the [TONE] buttons to select a desired tone. The button LED of the selected tone will be lit.Layering Two TonesThe Dual mode allows two different tones to be layered together, creating a more full and rich sound.Press two [TONE] buttons to enter Dual mode. The first [TONE] button you press will be set as the upper tone (tone 1), and the second [TONE] button you press will be set as the dual tone (tone 2).In Dual mode, if you play the keyboard, you will hear two different tones playing together, just like two different instruments being played at the same time.Key TouchThe Key Touch feature allows you to expressively control the voice level based on your playing dynamics.Press and hold [FUNCTION], then press one of the [Key Touch] keys to select an appropriate touch level. There are 3 types of touch settings (Fix, 1~3). The default setting is “2”. Selecting “Fix” will result in a fixed volume level, no matter how hard or how softly you play the keys.ParameterFix123DescriptionFixedLightMediumHeavyCMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   8   2018-10-19   16:54:38Roland_GOPIANO88_Manual_G05_181019.ai   8   2018-10-19   16:54:38
Press and hold [FUNCTION], then press one of the [Reverb] keys to set the reverb level range from 0 to 10.Press and hold [FUNCTION], then press the black key in the [Reverb] keys to restore the default setting. When the reverb level is set to "0", there will be no reverb effect.Reverb09The metronome provides a steady beat to help you practice at a preset tempo.Turn the metronome on or off.Press the [METRONOME] button to turn the function on or off. When the metronome is in use, the button indicator will flash in sync with the current tempo.Change the metronome beat.The instrument provides 6 beat types: 0, 2~6.Press and hold [FUNCTION] or [METRONOME], then press one of the [BEAT] keys to set the metronome beat.Press and hold [FUNCTION] or [METRONOME], then press the black key in the [BEAT] keys to restore the default setting.Press and hold [METRONOME], then press a key [A0] ~ [D1] to select a beat type. Please refer to List of Operations (Button + Key) for details.Adjust the metronome volume.Press and hold [FUNCTION] or [METRONOME], then press one of the [VOLUME] keys to set the volume range from 1 to 10.Press and hold [FUNCTION] or [METRONOME], then press the black key in the [VOLUME] keys to restore the default setting.MetronomeororCMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   9   2018-10-19   16:54:38Roland_GOPIANO88_Manual_G05_181019.ai   9   2018-10-19   16:54:38
You can set the tempo in the following ways:Press and hold [FUNCTION] or [METRONOME], then press one of the [TEMPO] keys to set the desired tempo.Press and hold [METRONOME], then press the keys marked [1~9~0] to set the tempo value. For example, press [0], [6], [4] in sequence to enter a tempo value of 64.This function adjusts the pitch of the instrument in 0.1Hz increment over a range of 415.3Hz ~ 466.2Hz.Press and hold [FUNCTION], then press one of the [Tuning] keys to adjust the pitch of the keyboard.For example, if you press and hold [FUNCTION], then press the key marked [440], it will set the tuning to 440Hz.Master TuningTempo10The transpose function allows the overall pitch of the instrument to be transposed up or down in semitone steps, over a range of -6 ~ +5.Press and hold [FUNCTION], then press one of the [Transpose] keys to set the transpose value. For example, set the transpose value to -5, you will hear “G” pitch when playing the “C” keys.Press and hold [FUNCTION], then press the black key in the [Transpose] keys to restore the default setting.TransposeParameter+1-1DescriptionTo raise the overall pitch by 1 semitone.To lower the overall pitch by 1 semitone.Parameter+0.1Hz-0.1HzDescriptionTo raise the pitch by 0.1Hz.To lower the pitch by 0.1Hz.orCMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   10   2018-10-19   16:54:39Roland_GOPIANO88_Manual_G05_181019.ai   10   2018-10-19   16:54:39
Bluetooth PairingThe Bluetooth function is turned on by default. You can pair the instru-ment with an external Bluetooth device. The instrument’s Bluetooth Audio name: GO:PIANO88.The instrument’s Bluetooth MIDI name: GO:PIANO88.Disable Bluetooth ConnectionPress and hold [FUNCTION], then press the key marked [AUDIO] to disconnect Bluetooth Audio.Press and hold [FUNCTION], then press the key marked [MIDI] to disconnect Bluetooth MIDI.When Bluetooth connection is disabled, you can enable Bluetooth connection again by pairing.Bluetooth11The Twin Piano function splits the keyboard into two areas with the same pitch and tone, for the convenience of playing together with a friend or instructor. 1. Press the [TWIN PIANO] button to turn on the function. The button      LED will be lit. The default split point is E3 (32).2. The upper tone selected before entering Twin Piano will become      the default tone for both areas. You can press one of the [TONE]      buttons to select a desired tone.3. Press the [TWIN PIANO] button again to turn off the function. The      button LED will turn off.Notes: 1. Twin Piano function is not available in Demo mode.2. Dual mode is not available when Twin Piano is in use.Twin PianoPress and hold [FUNCTION], then press a key [C2] ~ [D#3] to assign the MIDI Out channel. Please refer to List of Operations (Button + Key) for details.MIDI Out CMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   11   2018-10-19   16:54:39Roland_GOPIANO88_Manual_G05_181019.ai   11   2018-10-19   16:54:39
ProblemThe speakers produce a pop sound whenever the power is turned ON/OFF.Speakers do not produce sound when the keyboard is played.There is noise when I use a mobile phone.When connecting to computer, the instrument cannot be recognized.The pedal does not respond.It shuts down after a period of time.Possible Cause and SolutionThis is normal and no cause for alarm.1. Check if the master volume is set too low.2. Check if headphones are plugged into the PHONES jack.Using a mobile phone in close proximity to the instrument may produce interference. To prevent this, turn off the mobile phone or use it farther away from the instrument.Check if the USB cable is firmly connected. Try connecting anotherUSB port on the computer. This instrument is plug and play and should work without installing a driver.Check if the pedal cable is firmly connected.The auto power off function will turn off the instrument after a preset period of time when the instrument is not in use. You can configure the Auto Power Off function, please refer to Auto Power Off in this manual.Troubleshooting12The instrument will automatically shut down after 30 minutes of inactivity. You can disable this function or change the time setting. 1. To disable this function: press and hold [FUNCTION], then press the      key [C8] (the first key to right side of the keyboard).2. To set the time to 240 minutes: press and hold [FUNCTION], then      press the key [B7].3. To set the time to 30 minutes: press and hold [FUNCTION], then press      the key [A#7].4. To set the time to 10 minutes: press and hold [FUNCTION], then press      the key [A7].Auto Power OffCMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   12   2018-10-19   16:54:39Roland_GOPIANO88_Manual_G05_181019.ai   12   2018-10-19   16:54:39
Appendices13SpecificationsDemo ListKeyboard    Keyboard    Touch ResponseTones    Polyphony (max.)    Tones    Layer    Twin PianoEffects    ReverbSong     Demo Pitch Adjustment    Transpose    TuningOther Functions    Metronome    Tempo    Other controlConnections   Interaction & Expansion    Phones/Output    Pedal    USBPower Supply    Power    Power Off ProtectionAmplifiers &  Speakers    Amplifiers    SpeakersDimensions & Weight    Dimensions LWH (mm)    Weight (kg) 88 Keys with Touch Response         3 types, Off 1284 panel YesYes  1 type, 0 - 10 levels 10 presets  -6 - +5 415.3Hz - 466.2Hz Metronome beat: 0, 2 - 6;Metronome volume: 1 - 1030 - 280MIDI Out channel,Bluetooth audio,Bluetooth MIDIUSB MIDI, BluetoothStandard stereoSustainUSB MIDI  DC12V / 2AYes 10W x 2[15cm x 6cm] x 2 1283 x 292 x 877.0 No.1234Tone NameAcoustic Grand PianoElectric PianoChurch OrganString EnsemblesNo.12345678910Song NameValse OP.34 NO.1Sonate Nr.16 C DurLiebesträume Nr.3Fantaisie-Impromptu1ère GymnopédieRadetzky MarschTräumereiFrühlingsliedFür EliseMenuett G Dur BWV Anh.114* Specifications and descriptions herein are for information only and are subject to change without prior notice.Tone ListCMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   13   2018-10-19   16:54:39Roland_GOPIANO88_Manual_G05_181019.ai   13   2018-10-19   16:54:39
1. [Audio Disconnect] Key    Press to disable Bluetooth Audio connection.    [MIDI Disconnect] Key    Press to disable Bluetooth MIDI connection.2. [MIDI Channel 1 ~16] Keys    Press to select the MIDI output channel.3. [Metro. Volume] Keys    Press to adjust the metronome volume.1. [Metro. Beat] Keys    Press to select a beat type.2. [Tempo] Keys    Press to enter a tempo value.3. [Metro. Volume] Keys    Press to adjust the metronome volume.1. [Song Number] Keys    Press to select a demo song.4. [Metro. Beat] Keys    Press to set the metronome time signature.5. [Tempo] Keys    Press to edit the tempo value.4. [Metro. Beat] Keys    Press to set the metronome     time signature.5. [Tempo] Keys    Press to edit the tempo value.6. [Reverb] Keys    Press to set the reverb level.7. [Key Touch] Keys    Press to select a touch level.8. [Tuning] Keys    Press to adjust the current tuning.9. [Transpose] Keys    Press to adjust the transpose value.10. [Phones Sense] Keys      Press to turn the Phones Sense       function on or off.11. [Auto Power Off] Keys      Press to change the Auto Power       Off setting.Appendices14List of Operations (Button + Key)[FUNCTION] + Key[METRONOME] + Key[METRONOME] + [TWIN PIANO] + KeyA01356121315-1+1-1+1OFFMedium-0.1Hz+0.1Hz-1+1On10 min.240 min.OFF-1+1-1+18102479111416(Default)4/4 (Default)(Default)-10Tempo = 106+10LightHeavy440.0Hz(Default)442Hz0 (Default)Off30 min. (Default)C1 C2 C3 C4 C5 C6 C7 C8B0 B1C1 D1 E1 F1 G1 C2 D2 E2 F2 G2A1 B2 C3 D3 E3A2 F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6 D6 E6 F6 G6 A6 B6 C7 D7 E7 F7 G7 A7 B7 C81Bluetooth 2MIDI Channel 3Metro. Volume 4Metro. Beat 5Tempo 6Reverb 7Key Touch 8Tuning 9Transpose 10Phones Sense 11Auto Power OffAudio  DisconnectMIDI  DisconnectC1 C2 C3 C4 C5 C6 C7 C8C1 C2 C3 C4 C5 C6 C7 C8A00364  (Default)1356-1-1+1-1+1+180225479(Default)4/4 (Default)-10Tempo = 106+10B0 B1C1 D1 E1 F1 G1 C2 D2 E2 F2 G2A1 B2 C3 D3 E3A2 F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6 D6 E6 F6 G6 A6 B6 C7 D7 E7 F7 G7 A7 B7 C81Metro. Beat 3Metro. Volume 4Metro. Beat 5Tempo2TempoA013568102479B0 B1C1 D1 E1 F1 G1 C2 D2 E2 F2 G2A1 B2 C3 D3 E3A2 F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6 D6 E6 F6 G6 A6 B6 C7 D7 E7 F7 G7 A7 B7 C81Song NumberCMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   14   2018-10-19   16:54:39Roland_GOPIANO88_Manual_G05_181019.ai   14   2018-10-19   16:54:39
Appendices15MIDI Implementation ChartTrueCMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   15   2018-10-19   16:54:39Roland_GOPIANO88_Manual_G05_181019.ai   15   2018-10-19   16:54:39
GO PIANO88_G05CMYCMMYCYCMYKRoland_GOPIANO88_Manual_G05_181019.ai   16   2018-10-19   16:54:40Roland_GOPIANO88_Manual_G05_181019.ai   16   2018-10-19   16:54:40
NCC警語(臺灣)第十二條經型式認證合格之低功率射頻電機,非經許可,公司、商號或使用者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。第十四條低功率射頻電機之使用不得影響飛航安全及干擾合法通信;經發現有干擾現象時,應立即停用,並改善至無干擾時方得繼續使用。前項合法通信,指依電信法規定作業之無線電通信。低功率射頻電機須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。The NCC Statement on Low Power Radio-frequency Devices (Taiwan) Article 12Without permission granted by the NCC, any company, enterprise, or user is not allowed to change frequency, enhance transmitting power or alter original characteristic as well as performance to an approved low power radio-frequency devices.Article 14The low power radio-frequency devices shall not influence aircraft security and interfere legal communications; If found, the user shall cease operating immediately until no interference is achieved. The said legal communications means radio commu-nications is operated in compliance with the Telecommunications Act. The low power radio-frequency devices must be suscep-tible with the interference from legal communications or ISM radio wave radiated devices.FCC Warning (the USA)Changes or Modifications not expressly approved by the party responsible could void the user’s authority to operate this device.This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:-- Reorient or relocate the receiving antenna.-- Increase the separation between the equipment and receiver.-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.-- Consult the dealer or an experienced radio/TV technician for help.IC Warning (Canada)This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:1. This device may not cause interference.2. This device must accept any interference, including interference that may cause undesired operation of the device. L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes :1. L’appareil ne doit pas produire de brouillage;2. L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.

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