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AT-20S    Owner’s Manual

02780045          ’03-11-3N

 

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Owner’s Manual

Copyright © 2001  ROLAND CORPORATION

All rights reserved. No part of this publication may be reproduced in any 

form without the written permission of ROLAND CORPORATION.

Before using this unit, carefully read the sections entitled:
“IMPORTANT SAFETY INSTRUCTIONS” (p. 2), “USING THE UNIT
SAFELY” (p. 3, 4), and “IMPORTANT NOTES” (p. 5, 6). These
sections provide important information concerning the proper
operation of the unit. Additionally, in order to feel assured that
you have gained a good grasp of every feature provided by your
new unit, Owner’s manual should be read in its entirety. The
manual should be saved and kept on hand as a convenient
reference. 

Summary of Contents for Music Atelier AT20s

Page 1: ...read the sections entitled IMPORTANT SAFETY INSTRUCTIONS p 2 USING THE UNIT SAFELY p 3 4 and IMPORTANT NOTES p 5 6 These sections provide important information concerning the proper operation of the u...

Page 2: ...has two blades and a third grounding prong The wide blade or the third prong are provided for your safety When the provided plug does not fit into your outlet consult an electrician for replacement o...

Page 3: ...ing in the ears you should immediately stop using the unit and consult an audiologist 011 Do not allow any objects e g flammable material coins pins or liquids of any kind water soft drinks etc to pen...

Page 4: ...of dust between the power plug and the power outlet can result in poor insulation and lead to fire 104 Try to prevent cords and cables from becoming entangled Also all cords and cables should be place...

Page 5: ...ng devices that normally are used while their light source is very close to the unit such as a piano light or powerful spotlights to shine upon the same area of the unit for extended periods of time E...

Page 6: ...k in a level position not tilted in any direction while inserting it into the drive Push it in firmly but gently Never use excessive force 608 To avoid the risk of malfunction and or damage insert onl...

Page 7: ...n to a full range of organ sounds high quality sounds such as strings and brass are also included onboard You can simply select sounds and enjoy playing the organ no need to perform complicated editin...

Page 8: ...isk styles in internal memory Although the Rhythm Disk button already contains various rhythms these can be re placed by rhythms from a music style disk Rhythms that are loaded from a music style disk...

Page 9: ...ice 24 Selecting a Voice Using the Others Button 25 Adjust the Volume Balance 26 Transpose the Pitch in Octave Units Octave Shift 27 Playing Drum Sound or Sound Effects on the Keyboard 28 Playing Drum...

Page 10: ...ng When You Switch Panel Settings 51 Assigning a Name to a Registration Set 51 Copying Only the Name of a Registration 53 Saving Registration Sets to a Floppy Disk 54 Loading Previously Saved Registra...

Page 11: ...he Wall Type 89 Sustain Effect 89 Changing the Sustain Length 89 Various Other Settings 90 Turning Initial Touch On Off Initial Touch 90 Changing the Function of the Foot Switch 90 Using the Foot Swit...

Page 12: ...ng a Computer 99 If You re Using MIDI 100 Connecting the AT 20S to a MIDI Instrument 100 Appendixes Troubleshooting 101 Display Messages 103 Voice List 105 Drum Set List 106 Rhythm List 108 Chord List...

Page 13: ...13 MEMO...

Page 14: ...er Orchestral part Level button p 26 12 Harmony Intelligence button p 40 13 Solo voice select buttons p 24 Solo part Level button p 26 Piano Strings Choir Brass Guitar Lower 1 Lower 2 Pipe Organ Beat...

Page 15: ...44 19 Rhythm select buttons p 30 Arranger On Off button p 35 Style Orchestrator buttons p 33 Tempo button p 35 Fill In To Variation button p 33 Fill In To Original button p 33 Intro Ending button p 3...

Page 16: ...een completed turn on or off power to your various devices in the order specified By turning on or off devices in the wrong order you risk causing malfunction and or damage to speakers and other devic...

Page 17: ...location of microphones relative to speakers This can be remedied by Changing the orientation of the microphone Relocating microphone at a greater distance from speakers Lowering volume levels Using H...

Page 18: ...y using refer to page 54 Even if you perform the Factory Reset operation the Rhythm Disk button will not return to the factory settings If you wish to return the Rhythm Disk button to the factory sett...

Page 19: ...disk 2 Press the Demo button the indicator will light fig 02 02 3 Press the Select and buttons to select a Demo song 4 Press the Play button When the selected demo song ends the next demo song will be...

Page 20: ...utton However if you wish to save this song press the Reset button to cancel the procedure and then save the song onto a floppy disk If you wish to save the musical data to a floppy disk refer to Savi...

Page 21: ...and Pedalboard fig 02 04 The Upper Keyboard and Lower Keyboard each have two parts Organ Orchestral You can select one voice for each part meaning that it is possible to layer up to two voic es on eac...

Page 22: ...the Low er keyboard will play Lower Organ1 Example Selecting Jazz Organ2 for the Upper Organ part and Grand Piano for the Upper Orchestral 1 Press the Upper Organ Jazz button indicator lights The nam...

Page 23: ...s the Pedal Organ button indicator lights The name of the selected voice appears in the display for several seconds fig 02 08 Now when you play the Pedalboard Organ Bass 1 will be heard Settings can b...

Page 24: ...ars in the display for a few seconds fig 02 12 Play the Upper keyboard The selected voice will sound by the highest note played It is possible to change how a Solo voice will sound Normally the Solo v...

Page 25: ...of the selected Others button will light 2 While the voice name is shown in the display screen use the Value buttons to select the desired voice The indicator of the selected Others button will blink...

Page 26: ...t 1 The volume levels of each part are adjusted using the correspond ing and buttons When you press the up button the volume increases when you press the down but ton the volume decreases The volume c...

Page 27: ...elect Octave Shift 3 Use the and Part buttons to select a performance Part to which you wish to apply an Octave Shift Part Pedal L Organ L Orch U Organ U Orch Solo fig 02 16 4 Use the Value and button...

Page 28: ...18 1 Press the Drums SFX button indicator lights Play the Lower keyboard and listen to the various drum sounds on each key The Drums SFX button will alternate between on lit and off each time it is p...

Page 29: ...ights 2 When the Drum Set name is displayed on the screen press the Value buttons to select a Drum Set or Sound Effect Set The Drums SFX button indicator will begin to blink fig 02 20 You can select f...

Page 30: ...button once again indicator lights constantly The Rhythm button s indicator will change from blinking to light The Rhythm has now been applied Using the Rhythms of the Disk Button The Disk button cont...

Page 31: ...Stop button indicator will blink To Variation or To Original button s indicator will blink Pressing the To Variation or To Original button makes the Rhythm pattern change as well 2 Press the Start St...

Page 32: ...Rhythm pattern change as well 3 Play either the Lower Keyboard or the Pedalboard A short Intro is played and the Rhythm starts Starting without an Intro 1 Press the Sync Start button the indicator li...

Page 33: ...to the foot switch located on the left side of the Expression Pedal p 90 Changing the Arrangement of the Accompaniment Style Orchestrator You can change the arrangement of the accompaniment This funct...

Page 34: ...e indicator to light 2 Press the Intro Ending button The intro plays and a countdown plays to the end of the intro When the Sync Start button is lit specifying the chord with the left hand starts the...

Page 35: ...and no Pedal bass voice is selected the Automatic Accompaniment will play the bass sound Changing the Tempo You can change the tempo of the Rhythm or Automatic Accompaniment fig 03 06 P 40 1 Press the...

Page 36: ...ntly decides on accompaniment chords the moment you play some keys specifying a chord during automatic accompaniment For more information about chord fingering refer to the Chord List p 109 1 Select a...

Page 37: ...damage the magnetic surface of the disk rendering it unusable The disk drive s indicator will light up at full brightness when the drive is busy reading or writing data Ordinarily the indicator will b...

Page 38: ...isk drive 3 Use the Select and buttons to select a disk Rhythm indicator begins to blink fig 03 15 Press the Start Stop button you can hear the Rhythm 4 After selecting a disk Rhythm press the Rhythm...

Page 39: ...t After returning the Rhythm stored in the Rhythm Disk button to the factory settings see following section re load the Rhythm from disk Restoring the Rhythm Stored in the Rhythm Disk Button to the Fa...

Page 40: ...mony Intelligence button the indicator will alternate be tween ON lit and OFF fig 04 01 Changing the Type of Harmony Intelligence There are 4 different Harmony Intelligence When you press the Harmony...

Page 41: ...types Type A Solo Upper Type B fig 04 02 The number of notes of the harmony will depend on the Harmony Intelligence type You can select the Harmony Intelligence at the Utility menu p 93 Harp type har...

Page 42: ...is lit The Rotary effect will be applied to the voice 3 Press the Rotary Sound Fast Slow button to switch between Rotary Fast LED lit and Rotary Slow LED turned off LED lit Fast The effect obtained is...

Page 43: ...djust the overall Reverb amount When you press the up button additional Reverb is applied Pressing the down but ton decreases the Reverb level When you press the Reverb buttons the Reverb level will b...

Page 44: ...he Sustain 3 Press the Part and buttons to select the desire part Select the Upper or Lower part 4 Press the Value and buttons to switch ON or OFF 5 Press the Utility button to return to the basic scr...

Page 45: ...oice will also be heard and will play the root note Now when you play C E G on the Lower keyboard the C bottom note will also play the Pedal Bass voice In this way the Pedal Bass voice will be played...

Page 46: ...able values range from A to G in semitone steps fig 06 03 By pressing the Transpose buttons simultaneously you can restore the default setting C If the pitch is transposed something other than C the i...

Page 47: ...uring the playback of recorded music data p 81 Adding Decay to the Sound Damper Pedal When you depress the Damper Sustain pedal a decay effect will be added to the voices While you continue depressing...

Page 48: ...he pitch will temporarily be lowered and will gradu ally return to normal when you release the foot switch You can also change the function assigned to the Foot Switch Please refer to Changing the Fun...

Page 49: ...that have been stored to Registration 1 4 buttons are remembered even if the power is turned off If you wish to restore the settings stored in the Registration buttons to their factory settings use th...

Page 50: ...ton for several seconds but you can change this so that the settings are recalled the instant you press the button 1 Press the Utility button located to the left of the display 2 Press the Menu and bu...

Page 51: ...the default settings while the power is turned off Assigning a Name to a Registration Set When saving Registration sets names like REGIST 01 99 will be assigned by default but you can assign a name t...

Page 52: ...t u v w x y z 0 1 2 3 4 5 6 7 8 9 You can also press the Reset button to delete a character and the Rec button to insert a space 5 When you have finished assigning the name simultaneously press the Lo...

Page 53: ...egistration that you wish to copy into the disk drive 2 Press the Registration button to make the indicator light 3 Press the Select and buttons to select the Registration whose name you wish to copy...

Page 54: ...ve to Numbers which have not been used in the Saving operation will be displayed as fig 07 10 To cancel the operation press the Registration button 4 Press the Save button 5 Press the Bwd or Fwd butto...

Page 55: ...lected in the following two ways Loading a Set of Registrations You can load a set a collection of settings for Registration buttons 1 4 from floppy disk Loading an Individual Registration You can loa...

Page 56: ...ation set that you wish to load 4 Press the Function button 5 Press the Bwd or Fwd buttons to specify the Registration button number to be loaded fig 07 14 To cancel the operation press the Function b...

Page 57: ...tration set that you wish to delete fig 07 13 4 Simultaneously press the Function button and the Save button The following display appears fig 07 17 To cancel the operation press the Reset button 5 If...

Page 58: ...y recorded performance data will be added without erasing the previously record ed data If you wish to erase all the recorded data and record new performance data use the ed iting function Erase erase...

Page 59: ...ble with the General MIDI 2 or GS formats If you wish to purchase SMF music files please contact the dealer where you purchased the AT 20S fig 08 26 1 Insert a floppy disk containing commercially avai...

Page 60: ...ress the Demo button The performance data will begin playing When the last song ends you will return to the first song 3 To stop playback press the Stop button 4 Press the eject button The floppy disk...

Page 61: ...the Play button to begin recording Also if the Sync button is lit i e if Sync Start is ON recording will begin the instant you play the Lower keyboard 5 Press the Stop button when you have completed y...

Page 62: ...rt is recorded one after another first the Rhythm part then the bass part etc If there are any previously recorded performances you can listen to them as you record additional parts 1 Select the panel...

Page 63: ...tween the Play and Stop functions p 90 You can specify whether or not the Expression Pedal will affect the playback and what you play while Atelier music data is being played back p 81 If you use the...

Page 64: ...indicator lights The part that had been muted will return to normal and will be heard Track Assignments When Playing Commercial SMF Music Files When you playback without loading p 59 the SMF music fil...

Page 65: ...tton which you wish to re recording indicator blink The song data of the specified Track with the exception of the Control Track will be erased as new song data is recorded When the indicator of a Tra...

Page 66: ...data fig 08 09 1 Press the Function and Save buttons simultaneously The following message asking you to confirm your choice will be displayed fig 08 10 To cancel the procedure press the Reset button...

Page 67: ...stored on it Carefully check any previously used disk to be sure it doesn t contain any valuable data fig 08 11 1 Make sure that the write protect tab of the floppy disk is in the Write permit positio...

Page 68: ...e following message asking you to confirm will be displayed fig 08 14 To cancel the procedure press the Reset button 8 Press the Rec button again to perform the Format While formatting is in progress...

Page 69: ...P Q R S T U V W X Y Z a b c d e f g h i j k l m n o p q r s t u v w x y z 0 1 2 3 4 5 6 7 8 9 To delete a character press the Reset button A space can be inserted by pressing the Rec button 3 To confi...

Page 70: ...er be displayed fig 08 20 fig 08 19 1 Insert a floppy disk formatted p 67 on the AT 20S into the disk drive 2 Press the Save button to save the performance 3 Press the Bwd Fwd button to select the for...

Page 71: ...it in Atelier format ORIGINAL Performance data that was saved in SMF format will be indicated by a symbol fig 08 27 2 If the following screen will appear If the floppy disk already contains performanc...

Page 72: ...button The selected performance data will be loaded into internal memory If the following screen will appear The following message below is shown when the performance song in the unit has not been sav...

Page 73: ...ton The selected music file will be loaded When SMF music files is loaded into the AT 20S it will be stored in the following tracks Rhythm The Rhythm performance channel 10 Bass The Bass performance c...

Page 74: ...or button to select Disk Utility fig 08 13 4 Press the Rec button 5 Press the Select or button to select Delete Song fig 08 29 6 Press the Rec button To cancel the procedure press the Reset button 7...

Page 75: ...u can Turn on the Function menu item Punch In Out and specify the area that you wish to re record Use the Composer to play back the recorded performance and re record just a specific portion Specify t...

Page 76: ...begin When the specified area ends recording will end and playback will resume While the song is playing back or recording the Rec button s indicator will be lit as follows While the performance is p...

Page 77: ...Enter the recording standby mode by pressing the Rec button and Rhythm button The Play button and Rhythm button indicators will blink 4 Press the Play button When you press the Play button the metrono...

Page 78: ...ss the Function or Display Exit button The number of measures for Loop Recording has now been specified Use the procedure for Loop Recording to begin recording Using Song with a Different Tempo Than T...

Page 79: ...whether or not a metronome count in 2 measures will be heard after pressing the Play button on recording The count in helps you to establish the tempo before you begin playing 1 Press the Function bu...

Page 80: ...N Human voice Japanese To return to the basic screen press the Function button or the Display Exit button This setting remains stored in memory even while power is turned off Setting the Beat This set...

Page 81: ...nts will not be recorded The previous data will remain without being erased To return to the basic screen press the Function button or the Display Exit button Function During Playback You can specify...

Page 82: ...the Display Exit button Channel mute will be defeated when you perform the following operations Press the Select and buttons to select different perfor mance data Press the Demo button to play perform...

Page 83: ...l be moved forward to fill the gap Example To delete measures bars 5 8 fig 10 01 1 Press the Function button 2 Press the Select buttons to select Edit Menu fig 10 02 3 Press the Rec button 4 Press the...

Page 84: ...xpression pedal operations Part Balance Vol ume SMF music files except for data that was saved by the ATELIER series stores the RHYTHM track in channel 10 and the remaining musical data in the ACCOMP...

Page 85: ...t the data to be erased fig 10 12 Settings ALL NOTE CONTROL EXPRESSION VOICE TEMPO 7 Press the Rec button 8 Press the Bwd Fwd buttons to select the track whose recording you wish to delete If you have...

Page 86: ...elect ALL the recording in all the tracks will be copied 7 Press the Rec button 8 Press the Bwd Fwd buttons to specify from copy start measure fig 10 18 9 Press the Rec button 10 Press the Bwd Fwd but...

Page 87: ...LOW ER UPPER SOLO If you select ALL the recording in all the tracks will be quantized 7 Press the Rec button 8 Press the Bwd Fwd buttons to specify from quantize start measure 9 Press the Rec button 1...

Page 88: ...n press the Utility or Dis play Exit button It is not possible to modify the delay time delay interval when PAN DELAY is selected Changing the Depth of the Reverb The depth of the Reverb can be set 0...

Page 89: ...1 Press the Utility button 2 Press the Menu and buttons to select Sustain 3 Press the Part and buttons to select the part whose sustain you wish to adjust Keyboard Upper Lower Pedal 4 Press the Value...

Page 90: ...porarily be lowered and will gradually return to normal when you re lease the Foot Switch LEADING BASS The Leading Bass function will operate only while you contin ue pressing the Foot Switch When the...

Page 91: ...urned off Changing the Sound of the Count Down Count Down Sound You can change the sound that is used for the count played at the end of the intro p 34 1 Press the Utility button 2 Press the Menu and...

Page 92: ...nd buttons to select Damper Pedal 3 Press the Value and buttons to change the setting for Damper Pedal to UPPER The effect is applied to the voices played on the Upper keyboard to LOWER The effect is...

Page 93: ...rning Chord Intelligence On Off Chord Intelligence Chord Intelligence is a feature that intelligently plays the correct accompaniment chords the moment you play a key specifying a chord on the Lower k...

Page 94: ...Arranger Update Arranger Settings Recall Timing You can specify how the settings related to Rhythm perfor mances and Automatic Accompaniment will be recalled when you press a Registration button 1 4...

Page 95: ...e A note The Master Tune parameter lets you adjust this basic pitch to match the pitch of any other instruments that are playing together with the AT 20S 1 Press the Utility button 2 Press the Menu an...

Page 96: ...playback and one for keyboard performance Normally data received at the MIDI In connector will control only the sound generator for SMF data playback However by changing the MIDI IN Mode setting you...

Page 97: ...lity or Dis play Exit button This setting remains stored in memory even while power is turned off Setting PC Numbers PC Number You can specify the Program Change number that will be transmitted from M...

Page 98: ...ipment with cables be sure to follow the steps shown below to make the connections By turning on or off devices in the wrong order you risk causing malfunction and or damage to speakers and other devi...

Page 99: ...speed for the computer and the software For more information refer to the documentation for the computer you are using 7 You should also make the settings for the MIDI send channel p 96 Connection Exa...

Page 100: ...MIDI instrument to play sounds or switch tones The AT 20S contains two sound generators one sound generator for its own keyboards and one GS sound generator p 113 Normally musical data transmitted fr...

Page 101: ...be dedicated to switching the Registration When the Human Voice Jazz Scat is selected playing dynamics do not change the sound The Utility menu item Initial Touch is turned OFF p 90 Rotary effect is...

Page 102: ...rb volume or adjust the Part Balance of each part p 26 The Master Volume knob has been used to raise the overall volume excessively p 16 Some keys of certain keyboard parts sound strange You ve assign...

Page 103: ...eanings No floppy disk is connected to the disk drive Insert the disk correctly and repeat the procedure E 11 fig E 11 Meanings There is not sufficient space left on the floppy disk for the data to be...

Page 104: ...thers fig ot 02 Meanings The AT 20S is warning you that its memory will soon become full to capacity so not much more recording can be done fig ot 03 Meanings To carry out the procedure you first need...

Page 105: ...tage Rhodes 2 K41 Harpsichord K42 Clavi L11 Accordion L12 Bandoneon 2 L21 Harmonica 2 M11 Nylon str Gt 2 M21 Steel str Gt 2 M22 12str Guitar 2 M23 Ac Gtr Sld 2 M31 Jazz Guitar 2 M32 Clean Guitar 2 M41...

Page 106: ...Long Low Whistle EXC2 Short Guiro EXC3 Long Guiro EXC3 Claves High Wood Block Low Wood Block Mute Cuica EXC4 Open Cuica EXC4 Mute Triangle EXC5 Open Triangle EXC5 Shaker Jingle Bell Bell Tree Castane...

Page 107: ...a 808 Mid Conga 808 Low Conga High Timbale Low Timbale High Agogo Low Agogo Cabasa 808 Maracas Short Hi Whistle EXC2 Long Low Whistle EXC2 Short Guiro EXC3 Long Guiro EXC3 808 Claves High Wood Block L...

Page 108: ...reamin PopularPiano Acoustic Pop Beach Sound Twist 50 s Pop 1 Easy Listen1 Easy Listen2 ShufflePop 1 Motown Ballad 8BeatBallad1 Sunnyfeelin Soft Ballad Ballad Love Romance Love Songs Torch Song Medium...

Page 109: ...h the Cm7 5 C C D E E F CM7 C M7 DM7 E M7 EM7 FM7 C7 C 7 D7 E 7 E7 F7 Cm C m Dm E m Em Fm Cm7 C m7 Dm7 E m7 Em7 Fm7 Cdim C dim Ddim E dim Edim Fdim Dm7 5 Em7 5 Caug C aug Daug E aug Eaug Faug Csus4 C...

Page 110: ...m A m Am B m Bm F m7 Gm7 A m7 Am7 B m7 Bm7 F dim Gdim A dim Adim B dim Bdim Gm7 5 Am7 5 Bm7 5 F aug Gaug A aug Aaug B aug Baug F sus4 Gsus4 A sus4 Asus4 B sus4 Bsus4 F 7sus4 G7sus4 A 7sus4 A7sus4 B 7s...

Page 111: ...ON OFF Rotary ON OFF button ON OFF Pedal Bass Mode Solo Mode Sustain buttons ON OFF Sustain Length Tx MIDI Channel Initial Touch ON OFF PC Number Bank LSB Bank MSB Wall Type The Voices assigned for e...

Page 112: ...rts playing the Automatic Accompaniment Inversion When the lowest note of a chord is the root the chord is said to be in root position In contrast forms of a chord in which other notes are the lowest...

Page 113: ...files bearing the General MIDI logo GS format The GS Format is Roland s set of specifications for standard izing the performance of sound generating devices In addition to including support for every...

Page 114: ...x O x O x x x x x x x x O O O O O O O O O O O O O O O O O 0 127 x x x x O O x x x x O x 1 16 1 16 1 16 1 16 1 16 1 16 Mode 3 Mode 3 4 M 1 O x 0 127 0 127 O O O O 0 127 O x x x x x O 120 126 127 O x O...

Page 115: ...trator Break Chord Intelligence One Touch Program Intro Count Down Drum SFX Sets 8 Drum Sets 1 SFX Set Master Tuning 415 3 Hz 466 2 Hz 0 1 Hz Steps Key Transpose 6 5 Half steps Playback Transpose 24 2...

Page 116: ...x 466 H mm 45 3 4 W x 22 9 16 D x 18 3 8 H inches Stand 1150 W x 510 D x 745 H mm 45 5 16 W x 20 1 8 D x 29 3 8 H inches Total 1162 W x 576 D x 1211 H mm 45 3 4 W x 22 11 16 D x 47 11 16 H inches Wei...

Page 117: ...nd the world his concerts gen erate the often heard comment we loved it because he plays our kind of music This is another of Hal s special skills a knack for knowing just what music to play on any oc...

Page 118: ...ble playing the organ piano or key board as a concert artist and product demonstrator Rosemary Bailey Rosemary Bailey began playing the piano at the age of five performing strictly classical music She...

Page 119: ...splay of Lyrics 82 Drum Set 28 Drum SFX Set 29 Drums SFX 28 E Editing 83 Eject Button 37 Ending 32 90 Erase 85 Erasing Performance Song 66 Expression Pedal 47 Function 81 F Factory Default Settings 18...

Page 120: ...ormance Song 69 Registration 51 Reverb Effect 43 Reverb Depth 88 Reverb Type 88 Wall Type 89 Rhythm 30 Ending 32 Fill In 33 Intro 31 Starting and Stopping 31 90 Rhythm List 108 Rhythm Screen 18 Rotary...

Page 121: ...121 MEMO...

Page 122: ...ARK Roland Scandinavia A S Nordhavnsvej 7 Postbox 880 DK 2100 Copenhagen DENMARK TEL 3916 6200 FRANCE Roland France SA 4 Rue Paul Henri SPAAK Parc de l Esplanade F 77 462 St Thibault Lagny Cedex FRANC...

Page 123: ...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...

Page 124: ...AT 20S Owner s Manual 02780045 03 11 3N...

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