SERVICE MANUAL
Contents
1. GEMINIDJ COM BPM 1 PROFESSIONAL AUTOMATIC BEAT COUNTER f 2 E LJ S CONTENT S Gemini Sound Products Corp 120 Clover Place P O Box 6928 Edison NJ 08818 6928 732 738 9003 Phone 732 738 9006 Fax Connections 1 Make sure that the POWER 13 switch is in the off position The POWER LED 14 will be off This unit comes supplied with a 15 volt AC adaptor Plug the adaptor into the rear panel power jack Then plug the adaptor into a proper power source Use the 4 stereo PHONOILINE 2 5 8 11 inputs on the rear panel to connect to the output of your sources The PH1 LN1 12 switch enables you to set the CHANNEL 1 11 input sensitivity to Phono or Line The PH2 LN2 9 switch enables you to set the CHANNEL 2 8 input sensitivity to Phono or Line The PH3 LN3 6 switch enables you to set the CHANNEL 3 5 input sensitivity to Phono or Line The PH4 LN4 3 switch enables you to set the CHANNEL 4 2 input sensitivity to Phono or Line Note When using turntables don t forget to connect the ground wire from your tuntable to the ground screw of your mixer The BPM 1 is supplied with 4 sets of OUTPUT 1 4 7 10 jacks If you are using a turntable and have the input set to phono the corresponding output must be connected to phono inputs on your mixer If you have the input set to line the corresponding output must be connected to line inputs on your mixer Use the CHANNEL 1 OUTPUT 102. a pa x WA X am jj EET o w a a IL lr n MW yet AA d X ca ipm ce th dom N X I 1 w una yu us K waza Ci Li E AINA RAY E Mi y 1 ca mo w m so 1 m n 5 2 D X n ce r jo pi ox e 1 d te 7 2 ce i loz N I ax 1 Ci D cn o sow EN i on u in z D rm D uga r uea zA m r im wa me E u x Com m Lo 2 1 1 POWER NA BE HAMDJODOK m mm In the USA If you experience problems with this unit call 1 732 738 9003 for Gemini Customer Service Do not attempt to return this equipment to your dealer Parts of the design of this product may be protected by worldwide patents Information in this manual is subject to change without notice and does not represent a commitment on the part of the vendor Gemini Sound Products Corp shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual No part of this manual may
3. LED GREEN 3 080 063 TACT SWITCH 082 041 CERAMIC RESONATOR 12 MHz 052 018 Parts Lists Main PCB ICs Item Designators Description Part 1 IC2 IC3 1C4 IC8 INTEGRATED CIRCUIT UPC324 074 011 2 IC7 INTEGRATED CIRCUIT NJM7805FA 074 074 Electrical Parts Item Designators Description D18 RECTIFIER DIODE 1N4002 1N4003 1N4004 079 027 D8 10 D12 14 SILICON DIODE 1N4148 079 003 J1 4 4P RCA JACK 161 169 SW1 4 SLIDE SWITCH 2P2C PH LN 081 027 Page 4 Main PCB 3000 CObABICHI GELIMI 810 Page 5 Meter PCB Page 6 TER PCB we sha sm IN PCB m y ow ie X m 3 ga 3 1999989 E i pO 4 KA ji 30 m T you ver ps sio on vet en WA K y
4. be reproduced stored in a retrieval system or transmitted in any form or by any means electronic electrical mechanical optical chemical including photocopying and recording for any purpose without the express written permission of Gemini Sound Products Corp It is recommended that all maintenance and service on this product is performed by Gemini Sound Products Corp or its authorized agents Gemini Sound Products Corp will not accept liability for loss or damage caused by maintenance or repair performed by unauthorized personnel Worldwide Headquarters 120 Clover Place Edison NJ 08837 USA Tel 732 738 9003 Fax 732 738 9006 France G S L France 11 Avenue Leon Harmel Z I Antony 92160 Antony France Tel 33 0 1 55 59 04 70 Fax 33 0 1 55 59 04 80 Germany Gemini Sound Products GmbH Ottostrasse 6 85757 Karlsfeld Germany Tel 08131 39171 0 Fax 08131 39171 9 UK Gemini Sound Products Unit C4 Hazleton Industrial Estate Waterlooville UK P08 9JU Tel 087 087 00880 Fax 087 087 00990 Spain Gemini Sound Products S A Rosello 516 Barcelona Spain 08026 Tel 349 3435 0814 Fax 3493 347 6961 Gemini Sound Products Corp 2002 All Rights Reserved
5. best with tracks that have clear and strong beats Specifications INPUTS PROMOS Lunettes deesse ete M LK 3 mV 3 MOhm HL e Aa Aa aa 150 mV 3 MOhm OUTPUTS Input Output Resistance lt w s wwemewamemawamwanmanamm awa lt 0 1 Ohm GENERAL BPM Rangi anser ene obe been dese s 60 180 BPM Power Adapter ina td 115V 15V AC 500 mA 230V 15V AC 500 mA Dimensions 19 w x 1 75 h x 3 d 483 x 44 x 78 mm Weight ds ved andreas 3 Ibs 1 5 kg Parts Lists Cabinet Parts and Packing Description CASE 031 032 CHASSIS 021 461 KNOB PUSH 002 571 HOLDER LED 39 6 5mm 003 732 PLATE DISPLAY SMALL 003 372 CLIP WIRE 049 190 SERIAL NO LABEL 196 061 GIFT BOX 255 131 OWNER S MANUAL 157 962 BAND HEAD TAPPING SCREW TWIN 110 166 BAND HEAD TAPPING SCREW TW E 121 003A BAND HEAD TAPPING SCREW TWIN 110 172A BAND HEAD TAPPING SCREW NUT 111 044A BAND HEAD TAPPING SCREW 111 046A NUT WASHER 131 057 Printed Circuit Boards Item Description Part 1 PRINTED CIRCUIT BOARD BPM1 1 262 239 2 PRINTED CIRCUIT BOARD BPM1 2 262 240 Page 3 Parts Lists Meter PCB ICs Item Designators Description Part 1 IC5 INTEGRATED CIRCUIT M66313FP 074 155 2 IC1 INTEGRATED CIRCUIT SC87C51CCN40 074 157 Electrical Parts Item Designators Description 1 A B LED NUMERIC DISPLAY 080 102 2 1D1 2 D6 7 LIGHT EMITTING DIODE RED 3 080 003 D20 27 D30 LIGHT EMITTING DIODE YELLOW 3 080 062
6. 2 5 seconds and digitally display the Beats Per Minute allowing you to match the beats visually BPM DISPLAY 17 reflects the Beats Per Minute of the channel assigned to the left side of the unit and BPM DISPLAY 19 reflects the Beats Per Minute of the channel assigned to the right side of the unit NOTE A reading will appear on the BPM DISPLAY if the track has unclear beats The reading will also appear if there is no signal present 4 The BEAT OFFSET INDICATORS 18 light when the tracks of the two channels assigned to the crossfader are within 11 BPMs of each other and display how aligned the beats of the two channels are When the RED LEDs light the beats are not aligned When the YELLOW LEDs light the beats are almost aligned When the GREEN LED lights the beats are aligned perfectly NOTE If the difference between the two channel s beats exceed 11 BPM the BEAT OFFSET INDICATORS will not light SUGGESTION You can use the BPM DISPLAYS to determine which tracks have similar or the same Beats Per Minute When mixing two tracks with similar Beats Per Minute you can use one source s pitch control to align the Beats Per Minute with the other source s BPM The BPM DISPLAYS and the BEAT OFFSET INDICATORS update every 2 5 seconds and will reflect the change in BPM and indicate when the beats are aligned NOTE Beat mixing is a skill that requires practice Not every track has a strong beat and beat mixing works
7. M7805FA 074 074 Electrical Parts Item Designators Description D18 RECTIFIER DIODE 1N4002 1N4003 1N4004 079 027 D8 10 D12 14 SILICON DIODE 1N4148 079 003 J1 4 4P RCA JACK 161 169 SW1 4 SLIDE SWITCH 2P2C PH LN 081 027 Page 4 GEMINIDJ COM BPM 1 PROFESSIONAL AUTOMATIC BEAT COUNTER f 2 E LJ S CONTENT S Gemini Sound Products Corp 120 Clover Place P O Box 6928 Edison NJ 08818 6928 732 738 9003 Phone 732 738 9006 Fax Connections 1 Make sure that the POWER 13 switch is in the off position The POWER LED 14 will be off This unit comes supplied with a 15 volt AC adaptor Plug the adaptor into the rear panel power jack Then plug the adaptor into a proper power source Use the 4 stereo PHONOILINE 2 5 8 11 inputs on the rear panel to connect to the output of your sources The PH1 LN1 12 switch enables you to set the CHANNEL 1 11 input sensitivity to Phono or Line The PH2 LN2 9 switch enables you to set the CHANNEL 2 8 input sensitivity to Phono or Line The PH3 LN3 6 switch enables you to set the CHANNEL 3 5 input sensitivity to Phono or Line The PH4 LN4 3 switch enables you to set the CHANNEL 4 2 input sensitivity to Phono or Line Note When using turntables don t forget to connect the ground wire from your tuntable to the ground screw of your mixer The BPM 1 is supplied with 4 sets of OUTPUT 1 4 7 10 jacks If you are using a turntable a
8. jacks to connect to the appropriate inputs on your mixer Use the CHANNEL 2 OUTPUT 7 jacks to connect to the appropriate inputs on your mixer Use the CHANNEL 3 OUTPUT 4 jacks to connect to the appropriate inputs on your mixer Use the CHANNEL 4 OUTPUT 1 jacks to connect to the appropriate inputs on your mixer 1 POWER ON Once you have made all the equipment connections press POWER 13 The power will turn on and the POWER LED 14 will glow RED When you turn on the BPM 1 the unit will run through an initialization period in which the BPM DISPLAYS 17 19 and the BEAT OFFSET INDICATORS 18 will flash When the flashing stops the unit is ready for use The ASSIGN 16 21 buttons allow you to select which channel will be displayed on each side of the BPM 1 Press the ASSIGN 16 button to select channel 1 2 3 or 4 to be displayed on the left BPM DISPLAY 17 The ASSIGN LED 15 will indicate the channel you selected Press the ASSIGN 21 button to select channel 1 2 3 or 4 to be displayed on the right BPM DISPLAY 19 The ASSIGN LED 20 will indicate the channel you selected BPM DISPLAY There are BPM DISPLAYS 17 19 for each side of the BPM 1 They update approximately every 2 5 seconds and digitally display the Beats Per Minute allowing you to match the beats visually BPM DISPLAY 17 reflects the Beats Per Minute of the channel assigned to the left side of the unit and BPM DISPLAY 19 reflects the Beats Per Mi
9. manamm awa lt 0 1 Ohm GENERAL BPM Rangi anser ene obe been dese s 60 180 BPM Power Adapter ina td 115V 15V AC 500 mA 230V 15V AC 500 mA Dimensions 19 w x 1 75 h x 3 d 483 x 44 x 78 mm Weight ds ved andreas 3 Ibs 1 5 kg Parts Lists Cabinet Parts and Packing Description CASE 031 032 CHASSIS 021 461 KNOB PUSH 002 571 HOLDER LED 39 6 5mm 003 732 PLATE DISPLAY SMALL 003 372 CLIP WIRE 049 190 SERIAL NO LABEL 196 061 GIFT BOX 255 131 OWNER S MANUAL 157 962 BAND HEAD TAPPING SCREW TWIN 110 166 BAND HEAD TAPPING SCREW TW E 121 003A BAND HEAD TAPPING SCREW TWIN 110 172A BAND HEAD TAPPING SCREW NUT 111 044A BAND HEAD TAPPING SCREW 111 046A NUT WASHER 131 057 Printed Circuit Boards Item Description Part 1 PRINTED CIRCUIT BOARD BPM1 1 262 239 2 PRINTED CIRCUIT BOARD BPM1 2 262 240 Page 3 Parts Lists Meter PCB ICs Item Designators Description Part 1 IC5 INTEGRATED CIRCUIT M66313FP 074 155 2 IC1 INTEGRATED CIRCUIT SC87C51CCN40 074 157 Electrical Parts Item Designators Description 1 A B LED NUMERIC DISPLAY 080 102 2 1D1 2 D6 7 LIGHT EMITTING DIODE RED 3 080 003 D20 27 D30 LIGHT EMITTING DIODE YELLOW 3 080 062 LED GREEN 3 080 063 TACT SWITCH 082 041 CERAMIC RESONATOR 12 MHz 052 018 Parts Lists Main PCB ICs Item Designators Description Part 1 IC2 IC3 1C4 IC8 INTEGRATED CIRCUIT UPC324 074 011 2 IC7 INTEGRATED CIRCUIT NJ
10. nd have the input set to phono the corresponding output must be connected to phono inputs on your mixer If you have the input set to line the corresponding output must be connected to line inputs on your mixer Use the CHANNEL 1 OUTPUT 10 jacks to connect to the appropriate inputs on your mixer Use the CHANNEL 2 OUTPUT 7 jacks to connect to the appropriate inputs on your mixer Use the CHANNEL 3 OUTPUT 4 jacks to connect to the appropriate inputs on your mixer Use the CHANNEL 4 OUTPUT 1 jacks to connect to the appropriate inputs on your mixer 1 POWER ON Once you have made all the equipment connections press POWER 13 The power will turn on and the POWER LED 14 will glow RED When you turn on the BPM 1 the unit will run through an initialization period in which the BPM DISPLAYS 17 19 and the BEAT OFFSET INDICATORS 18 will flash When the flashing stops the unit is ready for use The ASSIGN 16 21 buttons allow you to select which channel will be displayed on each side of the BPM 1 Press the ASSIGN 16 button to select channel 1 2 3 or 4 to be displayed on the left BPM DISPLAY 17 The ASSIGN LED 15 will indicate the channel you selected Press the ASSIGN 21 button to select channel 1 2 3 or 4 to be displayed on the right BPM DISPLAY 19 The ASSIGN LED 20 will indicate the channel you selected BPM DISPLAY There are BPM DISPLAYS 17 19 for each side of the BPM 1 They update approximately every
11. nute of the channel assigned to the right side of the unit NOTE A reading will appear on the BPM DISPLAY if the track has unclear beats The reading will also appear if there is no signal present 4 The BEAT OFFSET INDICATORS 18 light when the tracks of the two channels assigned to the crossfader are within 11 BPMs of each other and display how aligned the beats of the two channels are When the RED LEDs light the beats are not aligned When the YELLOW LEDs light the beats are almost aligned When the GREEN LED lights the beats are aligned perfectly NOTE If the difference between the two channel s beats exceed 11 BPM the BEAT OFFSET INDICATORS will not light SUGGESTION You can use the BPM DISPLAYS to determine which tracks have similar or the same Beats Per Minute When mixing two tracks with similar Beats Per Minute you can use one source s pitch control to align the Beats Per Minute with the other source s BPM The BPM DISPLAYS and the BEAT OFFSET INDICATORS update every 2 5 seconds and will reflect the change in BPM and indicate when the beats are aligned NOTE Beat mixing is a skill that requires practice Not every track has a strong beat and beat mixing works best with tracks that have clear and strong beats Specifications INPUTS PROMOS Lunettes deesse ete M LK 3 mV 3 MOhm HL e Aa Aa aa 150 mV 3 MOhm OUTPUTS Input Output Resistance lt w s wwemewamemawamwan
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