Quark Brushless Systems

Quark Brushless Systems Instructin Manual fr Quark 22A/33A Universal Versin 2 Speed cntrller needs t be cmpletely checked after a mdel crash. Never use a damaged ESC. The heat sink n the ESC must be used fr maximum cling and perfrmance Never allw separate heat sinks t tuch each ther r any expsed cnductive surface. This may cause a shrt circuit, damage ESC, and VOID WARRANTY. Precautins: WARNING! High-pwered brushless systems can be very dangerus as high currents can heat and/r melt wires and batteries, causing fire, prperty damage, and serius bdily injury (including death). Fllw the Instructin Manual carefully. Only perate in a sanctined area. Quark ESC is equipped with a safety-arming feature, but users shuld still use cautin when cnnecting the battery. The Quark Electrnic Speed Cntrller cmplies with FCC and CE regulatins. CE apprval is yur guarantee the unit meets all the relevant interference emissin and rejectin regulatins when in peratin. The battery wires must be cnnected with crrect plarity. Quark ESC may be damaged if the plarity is incrrect and it will VOID the WARRANTY. Quark Electrnic Speed Cntrllers (ESC) are designed fr peratin exclusively with R/C batteries. DO NOT use ESCs in cnjunctin with a pwer supply. Energy reversal may ccur which can damage/destry the pwer supply and/r ESC and will VOID WARRANTY. When Mtr and Battery are cnnected t the ESC, handle the R/C with extreme care! Keep clear f mving/rtating parts when the battery pack is cnnected. D nt exceed the specified vltages as it may cause an verlad, damage the ESC, and VOID WARRANTY. D nt use Schttky Dides r Cndensers with Brushless Mtrs. Ni-MH and Ni-CD may be used in place f each ther, but never in place f Li-Ply Exercise Cautin during and after use as the mtr, battery, cntrller and all cnnecting wires may becme ht. Cntact with yur skin may cause a burn r serius bdily injury. The pwer ON/OFF switch n the Quark ESC des nt discnnect the battery frm the ESC. A lw residual current flws even if the Pwer switch is OFF and can cause deep under lading, especially with Li-Ply Cells. Cnnect the battery t the ESC shrtly befre peratin and discnnect shrtly after use. Never discnnect the battery pack while the mtr is running, as this culd cause damage n the speed cntrller and/r mtr. Safeguard the Quark frm excessive mechanical lads, vibratin, dirt, r misture. Shuld the ESC becme wet, nly reuse after air-drying fr an extended perid. If malfunctin ensues, it may be sent t manufacturer fr repair. Allwing water, lubricants, misture r ther freign materials inside the ESC will VOID WARRANTY. Expsure t CA glue r its fumes can cause the ESC damage and it may malfunctin; this will VOID WARRANTY. 1.0 Installatin f Quark Cntrller Mtr wires can be cnnected t the Quark ESC in any rder. If the mtr rtates in the ppsite directin, swap any tw f the three mtr wires t reverse the mtr rtatin. Please cnnect the Serv Plug t the prper channel f the receiver. Use high quality cnnectrs fr Battery and Mtr wires. Cnnectrs with lw cnductivity may cause erratic mtr rtatins r ther unexpected mvements. Fr the battery, use cnnectrs that cannt be plugged in backwards t prevent incrrect plarizatin. Cmply with the allwed vltage capacity f the cnnectrs. When pssible, direct sldering is recmmended fr best cnductivity. D nt munt the Mtr in the R/C befre all wires are prperly sldered and/r cnnected. Munt the Mtr nly after everything has been cnnected and is wrking prperly. When cnnecting the Quark t the battery pack, ensure that multiple tuches f the cnnectrs are nt made. Check the mtr manufacturer s instructin manual fr screw munting length. Munting lnger screws can damage mtr and/r shrt-circuit the ESC and/r mtr and VOID WARRANTY. Wires cnnecting the ESC t the mtr and the battery shuld be kept as shrt as pssible, preferably less than 20 cm. 2.0 Initial Setup Reset all the functins f the thrttle channels f the transmitter. The Fail Safe systems f PCM transmitters/receivers must be turned ff. Duble check the plarity f the battery wires. Warning!! The mtr shuld nt be cnnected t mving parts during prgramming because the vehicle may mve and may result in prperty damage and/r persnal injury. The default battery settings are Li-Ply Nrmal. When using a Ni-MH r Ni-Cd battery, please change the settings t prevent damage t the battery. 1

3.0 Quark Prgramming Instructins There are three steps t Quark ESC prgramming. 1. Neutral/Maximum Thrttle Psitin Prgramming (sectin 3.1) 2. Basic Prgramming (sectin 3.2) Includes: 1. Mde Selectin 4. Manual Cut-ff Vltage Selectin 2. Selectin 3. Battery Type Selectin 6) Mve the thrttle stick until yu will hear a recgnitin beep ( ). The red LED light will blink twice at this time. 7) Mve the thrttle stick t the desired Maximum/Full Thrttle Psitin and press the Prgram buttn and release. 8) Yu will hear tw recgnitin beeps ( ) signaling that the Maximum/Full Thrttle psitin has been saved. 9) Turn Off the external Quark pwer switch. Nte: If yu have crrectly fllwed the steps abve and are unsuccessful at prperly prgramming the Neutral and Full Thrttle Settings, please reverse the Thrttle Channel n the transmitter. 3. Advanced Prgramming (sectin 3.3) Includes: 1. Mtr Type Selectin 2. Drag On/Off Selectin & Heli Mde Slw Start On/Off Selectin 3. Race/Safe Mde Selectin 4. Nise Cancel Selectin 5. Trque Selectin 6. Neutral Range Selectin 7. Drag Amunt Selectin & Gvernr Respnse Selectin 3.1 Neutral/Max Thrttle Psitin Prgramming This is the starting pint fr all prgramming. It allws the user t set Neutral and Maximum thrttle psitins. All transmitters emit their wn transmitter signals and have varying Neutral and Maximum thrttle psitins and thus, it is the necessary first step in the verall prgramming f the Quark ESC. 1) Turn ON yur Transmitter. 2) Press and hld the Prgram buttn and then turn ON the external pwer switch n Quark. 3) Release the Prgram buttn apprximately after 2-3 secnds. 4) Mve the thrttle stick until yu hear a recgnitin beep ( ). The red LED will blink nce at this time. 5) Mve the thrttle stick t the desired Neutral thrttle psitin and press the Prgram buttn and release. Yu will hear anther recgnitin beep ( ) signaling that the Neutral psitin has been saved. 3.2 Basic Prgramming Basic Prgramming includes 4 settings: 1. Mde Selectin 4. Li-Ply Cut-ff Vltage Selectin 2. Selectin 3. Battery Type Selectin 3.2.1 Entering Basic Prgramming 1. Turn ON yur Transmitter. 2. Mve the thrttle stick t the Maximum/Full Psitin; Hld until step 4. 3. Turn On the Quark Pwer Switch ( ) transmitter recgnitin beep ( ). 4. Press and hld the Prgram buttn and then mve the thrttle stick t the Minimum psitin ( ). 5. Release the Prgram buttn after apprximately 2-3 secnds 6. Mve the thrttle stick until yu hear recgnitin beep ( ). Yu have entered Basic Prgramming*. * Yu will knw that yu have successfully entered basic prgramming when yu ntice the LED clr changes when the thrttle stick is mved up and dwn. 3.2.2 T chse any selectin 1. Mve the thrttle stick t enter setting (r mve t the next setting). 2. Mve the thrttle t the psitin that illuminates the desired LED pattern** and hld. 3. Press the Prgram buttn n the Quark. 4. Repeat step 1-3 until all settings 1 thrugh 5 are cmpleted*. 5. Pwer OFF the Quark t stre selected settings. *User may set desired selectins, starting frm Mde Selectin until desired settings are stred. User may then Pwer OFF the Quark t avid resetting remaining selectins (Example: User may set selectins f Air 3-D Mde and N s, then Pwer OFF the Quark. Thse tw selectins will be saved and the previus settings fr selectins 3-4 will remain saved. 2

**Use Tables 3.2-1 thugh 3.2-4 t set Basic Settings *Nte- Settings highlighted in blue are the Factry default settings* Table 3.2-1 Mde Selectin Mde Red Green Yellw Red Descriptin Heli Mde with 2 adjustable gvernr rpm Heli 3 settings. *When using tw gvernr rpms, nn-cllective pitch must be used. Heli 2 Heli Mde with 1 Gvernr functin. Heli 1 Heli Mde with n Gvernr functin. Car Mde with reverse. Reverse is Car-Reverse activated nly when the thrttle stick is at Full, returned t Neutral, and then reverse is applied. Car Car Mde with Frward/Braking Only. N Reverse. Air-3D Frward and Reverse Air Mde. Air Frward Only Air Mde. N Reverse. Table 3.2-2 Selectin Red Green Yellw Red Descriptin 100% Braking at any thrttle psitin belw 100% neutral Duble Hard Prprtinal Braking. Nrmal Standard Prprtinal Braking. Sft Sft Prprtinal Braking. 0% N Braking. Table 3.2-3 Battery Selectin Red Green Yellw Red Descriptin User can manually set the cut-ff vltage in Manual Li-Ply Cut-ff Selectin in Table 3.2-5. Warning! Damage t the battery may result if the cut-ff vltage is set t lw. Li-Ply High Select when the Battery is cmpatible with the vltage in use. Faster thrttle respnse time and increased trque cmpared t when Li-Ply Nrmal is selected. Select when the Battery capacity and Li-Ply discharge rate are lwer than vltage in Nrmal use. Slwer thrttle respnse and lwer trque than when Li-Ply High is selected. Select when the Battery is cmpatible with Ni-MH High the vltage in use. Faster thrttle respnse time and increased trque cmpared t when Ni-MH Nrmal is selected. Ni-MH Select when the Battery capacity and discharge rate are lwer than vltage in Nrmal use. Slwer thrttle respnse and lwer trque than when Ni-MH High is selected. Nte: Li-Ply High, r Ni-MH High shuld be selected when using a very high capacity battery. **Disregard Table 3.2-4 unless the Manual Battery Selectin was made** **T d s, Just Pwer OFF Quark ESC after cmpleting Battery Selectins** Table 3.2-4 Li-Ply Cut-Off Vltage Selectin Cut-ff Red Green Yellw Red Descriptin Vltage 3.0V Cut-ff vltage is set t 3.0V per cell. 2.9V Cut-ff vltage is set t 2.9V per cell. 2.8V Cut-ff vltage is set t 2.8V per cell. 2.7V Cut-ff vltage is set t 2.7V per cell. 2.6V Cut-ff vltage is set t 2.6V per cell. 2.5V Cut-ff vltage is set t 2.5V per cell. 2.4V Cut-ff vltage is set t 2.4V per cell. 2.2V Cut-ff vltage is set t 2.2V per cell. * Default battery setting is Ni-MH Nrmal. When using a Li-Ply battery, please change the settings t prevent any damage t the battery. * Selectin f Li-Ply High r Ni-MH High shuld nly be selected when the discharge capacity f the battery exceeds the actual current used in extreme running cnditins by at least by 150% (When the discharge capacity is insufficient t handle the actual current usage in such instances, driving feel may be affected and/r battery damage may result). * Exercise Cautin when setting the cut-ff vltages. When the vltage per cell falls belw a certain level, a Li-Ply battery may be permanently damaged making it un-rechargeable. In extreme cases, it may cause fire. * The Manual cut-ff vltage applies t nly Li-Ply batteries. * Once yu have selected Manual frm table 3.2-4 and set the cut-ff vltage manually, switching the battery type t an autmatic cut-ff will nt autmatically change the cutff vltage. (Fr example: If yu have selected Manual and a cut-ff vltage f 2.2V, any attempts t change the battery selectin t Li-Ply Nrmal r Li-Ply High will maintain the cut-ff vltage f 2.2V and thus, the cut-ff vltage must be reprgrammed). 3.3 Advanced Prgramming Advanced prgramming allws the user t chse frm a wider variety f features fr mre cntrl and perfrmance: 1. Mtr Type Selectin 2. Drag On/Off Selectin & Heli Mde Slw Start On/Off Selectin 3. Race/Safe Mde Selectin 4. Nise Cancel On/Off Selectin 3

5. Trque Selectin 6. Neutral Range Selectin 7. Drag Amunt Selectin & Gvernr Respnse Selectin Nte: Please select Out-runner type if an In-runner has 6 ples r abve. Als, please select In-runner when using an ut-runner with less than 600kv. 3.3.1 Enter Advanced Prgramming 1. Turn ON yur Transmitter. 2. Mve the thrttle stick t the Minimum Psitin; Hld until step 4. 3. Turn On the Pwer Switch ( ) transmitter recgnitin beep ( ) and ( ) signaling the Quark is ready. 4. Press and hld the Prgram buttn and then mve the thrttle stick t the Maximum psitin ( ). 5. Release the Prgram buttn after apprximately 2-3 secnds 6. Mve the thrttle stick until yu hear a recgnitin beep ( ). Yu have entered Advanced Prgramming*. * Yu will knw that yu have successfully entered Advanced prgramming when the LED clr sequence changes when the thrttle is mved up and dwn. Drag On Drag Off Table 3.3-2 Drag On/Off & Heli Mde Start On/Off Selectin Mde Red Green Yellw Red Descriptin Drag is Heli applied in the Slw neutral range at the Start amunt set in table On 3.3-7. Heli Slw Start Off N brake is applied in the neutral range Slw start is applied in the Heli Mde Nrmal start is applied in the Heli Mde *2 different settings are simultaneusly prgrammed. Hwever, drag brake is nly applied when car mde is selected frm 3.3-1. When Heli mde is selected frm 3.3-1, then Heli slw start is prgrammed. 3.3.2 T chse any selectin: 1. Mve the thrttle stick t enter setting (r mve t the next setting). 2. Mve the thrttle t the psitin that illuminates the desired led pattern** and hld. 3. Press the Prgram buttn n the Quark. 4. Repeat step 1-3 until all settings 1 thrugh 7 are cmpleted*. 5. Pwer OFF the Quark t stre selected settings. *User may set desired selectins, starting frm Mtr Type until desired settings are stred. User may then, Pwer OFF the Quark t avid resetting remaining selectins (Example: User may set selectins f Inrunner Mtr Type, Drag ON, and Race Mde, then pwer OFF the Quark. Thse three selectins will be saved and the previus settings fr selectins 4-7 will remain saved. **Use Tables 3.3-1 thugh 3.3-7 t set Basic Settings **Nte. Settings highlighted in blue are the factry default settings** Table 3.3-1 Mtr Type Selectin Mtr Type Red Green Yellw Red Descriptin Select when using an utrunner type Outrunner brushless mtr. Select when using a nrmal type brushless Inrunner mtr. Table 3.3-3 Race/Safe Mde Selectin Mde Red Green Yellw Red Descriptin Cmpetitin Mde. Race Mde Transmitter recgnizes nly the User s TX. Safe Mde Fail-safe system is activated. *When Safe Mde is selected, the fail-safe shut dwn functin may cause shut dwns in an envirnment when there are several interferences. Table 3.3-4 Nise Cancel On/Off Selectin Mde Red Green Yellw Red Descriptin Nise Cancel On Filters ut shrt interference nises. The Quark may nt respnd t very fine thrttle adjustments. The Quark respnds t the slightest thrttle adjustments. Nise Cancel Off *Nise Cancel On is recmmended nly fr driving envirnments with heavy interference. Table 3.3-5 Trque Selectin Trque Red Green Yellw Red Descriptin 4

Dynamic Dynamic initial trque Nrmal 2 Nrmal 1 Sft Smth initial trque *Prprtinal trque is applied regardless f trque selected (The trque crrespnds with the amunt f thrttle applied). WARNING!! REMOVE ROTOR BLADES FROM MAIN ROTOR HEAD DURING GOVERNOR RPM PROGRAMMING!!! IT MAY CAUSE SERIOUS INJURY WITH THE ROTOR BLADES ATTACHED!!! 1. Heli-1 Mde is NOT equipped with the Gvernr RPM feature. 2. Heli-2 Mde is equipped with ONE RPM setting. 3. Heli-3 Mde is equipped with TWO RPM settings. Table 3.3-6 Neutral Range Selectin Neutral Red Green Yellw Red Descriptin Range Wide Widest Neutral range Nrmal 2 Nrmal 1 Narrw Very Narrw Neutral range *Use the narrw selectin if lw speed cntrl is needed. The wide selectin shuld be used if cgging ccurs. Table 3.3-7 Delayed Amunt and Gvernr Respnse Selectin Mde Descriptin Amunt Gvernr Red Green Yellw Red Amunt f Drag f Drag Respnse Gvernr Respnse Hard Fast Hard in the Fast Gvernr Neutral Range Respnse Sft Slw Sft in the Slw Gvernr Neutral Range Respnse *2 different settings are simultaneusly prgrammed. Hwever, drag brake is nly applied when Car Mde is selected. When Heli Mde 1, 2, r 3 is selected frm 3.3-1, drag brake is nt applied and the gvernr respnse selectin is prgrammed. 4.0 Instructins fr Setting the Gvernr RPM in Heli Mde Setting the Gvernr RPM can be dne ONLY in Heli 2 and 3 Mdes. Heli-2 Mde is recmmended fr intermediate/advanced users. Heli-3 Mde is recmmended nly fr prfessinal Users. Prperly setting the Gvernr RPM requires practice and trial and errr is expected during actual flight. 4.1 Heli-2 mde: Setting Gvernr One RPM: 1. Prepare tachmeter. 2. DO NOT ATTACH ROTOR BLADES OR PLEASE DETACH AT THIS TIME. 3. Select Heli-2 mde. (Refer t Table 3.2-1) 4. Turn n yur Transmitter. The thrttle stick shuld be in the MINIMUM psitin. ( ) 5. Increase thrttle slwly and the mtr will start rtating. 6. At desired RPM. press the Prgram buttn n the Quark. (MOTOR will STOP) 7. At this time the RED LED will blink ONCE in ne secnd intervals. 8. Lwer thrttle belw the minimum psitin and gradually increase t start running the mtr again. 9. Mve the thrttle stick t the desired RPM again, check Rtr Head RPM with tachmeter. 10. Press the prgram buttn at the desired RPM. (Mtr will STOP at this time) 11. Gvernr ONE RPM setting is cmplete. 4.2 Heli-3 mde: Setting Gvernr Tw RPM: 1. Prepare tachmeter. 2. DO NOT ATTACH ROTOR BLADES OR PLEASE DETACH AT THIS TIME. 3. Select Heli-3 mde. (Refer t Table 3.2-1) 4. Turn ON yur transmitter. The thrttle stick shuld be in the MINIMUM psitin. ( ) 5. Increase thrttle slwly and the mtr will start rtating. 6. At desired RPM, press the Prgram buttn n the Quark. (MOTOR will STOP) 7. At this time the RED LED will blink ONCE in ne secnd intervals. 8. Lwer thrttle belw the minimum psitin and gradually increase t start running the mtr again. 9. Mve the thrttle stick t the desired RPM again, check Rtr Head RPM with tachmeter. 10. Press the prgram buttn at the desired RPM. (Mtr will STOP at this time) Gvernr One RPM setting finished. 11. Mve the thrttle stick up and dwn. ( ) 5

12. At this time the RED LED will blink TWICE in ne secnd intervals. 13. Increase thrttle until the GREEN LED turns ON (Quark s Green LED will autmatically light up when the user sets the thrttle psitin abve the FIRST RPM setting.) 14. Press Prgram buttn. ( ) Gvernr 2 thrttle stick psitin setting finished. 15. Lwer thrttle stick belw the minimum psitin and gradually increase t start running the mtr again. 16. Check the Main Rtr Head RPM with tachmeter, mve the thrttle t the desired 2 nd RPM speed. 17. Press the Prgram buttn (Mtr will stp) => RPM 2 setting is finished. TIP: After prgramming there are tw ways t start running the mtr: 1. Turn pwer OFF n the Quark and turn it back ON. 2. Turn pwer OFF n the Transmitter and turn it back ON (withut pwering OFF the Quark.) 5.0 Prgramming Tips Please visit ur website fr mre detailed prgramming tips. www.sky-technlgy.net a. Prgramming Sunds The Quark generates a recgnitin sund in the fllwing situatins: Quark Pwer ON: Transmitter ON: Minimum Thrttle Psitin: Prgram Data Saved: Fr example, when the transmitter is turned n and the thrttle stick is at the minimum psitin the fllwing successive sunds will be generated when the Quark s pwer switch is turned On: ~ ~ b. Truble Shting When the Quark Pwer ON sund is nt generated: Check the battery cnnectin and if the pwer switch is On. When the Transmitter ON sund is nt generated: Check the transmitter and receiver crystals and that the Receiver wires are prperly cnnected. When the Minimum Thrttle Psitin sund is nt generated: refer t sectin 3.1 and reprgram the neutral/maximum thrttle psitin settings. Yu may als adjust the Transmitter s thrttle EPAs and Trims. 5.0 OPTO Mdificatin 6.0 Prduct Warranty * OPTO Mdificatin must be applied when using batteries abve Ni-MH 10cell Li-Ply 4 Cell. When dne user must use a digital BEC r a Receiver battery. Sky & Technlgy C., LTD warrants prducts t be free frm defects in materials r wrkmanship fr a perid f 180 days frm the riginal date f purchase (needs t be verified with a dated sales receipt). This warranty des nt cver the fllwing: incrrect r errneus installatin, any cmpnent parts damaged by use r mdificatin, damage r tampering t case and/r any expsed circuit bards, verlading specified vltage, shrt circuiting frm spliced r damaged wiring and/r mtr (i.e. incrrect screw lengths), reverse battery plarizatin, verheating slder tabs, damage frm imprper installatin f FET serv r receiver battery pack, using a Schttky dide, splices t wires (i.e. ON/OFF switch) causing a shrt circuit, damage frm frce when using Prgramming buttn, tampering with the internal circuit cmpnents and/r disassembling case, water, misture r any ther freign bjects t enter ESC r get nt the PC bard, permitting expsed wiring r slder tabs t shrt-circuit, fitting cnnectrs which are incapable f handling the specified current lads and/r cnnectrs that prvide pr electrical current and causes cntrller t functin and perate defectively and/r incnsistently r any damage caused by a crash, r flding. Sky & Technlgy C., LTD reserves the right t change r mdify this warranty withut ntice. Warranty Prcedures Prir t sending in yur unit fr service, please duble check the instructin manual and system setup as the cntrller may nt wrk due t a malfunctin r failure in the system. If yur unit develps a prblem and/r needs repair, please return it t Sky & Technlgy C., LTD r t the Imprter. A detailed descriptin f the prblem r will help speed up time in replacing and/r repairing (Infrmatin shuld include: Battery vltage and capacity, mtr manufacturer and type, radi system, serv, gears and prgrammed functins). We recmmend dwnlading and filling ut the Prduct Service/Repair frm n ur website at www.sky-technlgy.net. If a frm cannt be dwnladed, please call r fax Sky & Technlgy C., LTD r Imprter. Fr service and repairs under warranty, please send in dated Invice/Sales receipt alng with infrmatin n where (dealer, address, phne number and cuntry) the unit was purchased. (Please keep a cpy f Prduct Service/Repair frm and riginal invice) Nte: Discnnect r remve the red wire frm the middle pin f the scket. If yu cme acrss prblems perating the Quark cntrller, please nte that many prblems are due t incmpatible cmbinatins f receiving system cmpnents r an incrrect installatin f the mdel. 6

Nte: Nte: After testing and if the unit is perating crrectly, even if the unit is under Warranty, a Labr Charge will be charged. Damages caused by the users wn negligence is nt cvered under the warranty and any replacement and shipping csts will be brne by the requesting party. Limitatin f Liability Sky & Technlgy C., LTD has n cntrl ver the prper installatin and peratin, as well as the Speed Cntrller s usage and maintenance. Due t this reasn, n liability fr lss, damage r csts resulting frm the use f the prduct and any ther means shuld be assumed r accepted. Any claims arising frm the peratin, failure, malfunctins r etc., will be disclaimed. Every Quark cntrller is carefully tested befre leaving facility and is, therefre, deemed peratinal. By the act f cnnecting and/r perating speed cntrller, user accepts all resulting liability. Sky & Technlgy C., LTD assumes n liability fr persnal injury, prperty damage r cnsequential damages resulting frm ur delivery r ur wrkmanship. In n case shall ur liability exceed the prducts riginal invice value. Sky & Technlgy C., LTD reserves the right t change r mdify this warranty withut ntice. 7.0 Cntact Infrmatin Fr any questins, technical supprt, r any kind f infrmatin, please cntact us at: Sky & Technlgy USA Sky & Technlgy C., LTD 500 E. Carsn Plaza Drive, Suite 222 10 th Flr Trapalace #1059, S-Nae Dng Carsn, CA 90746 Bun Dang Gu, Kyung Ki D, 463-825 Krea Tel: 310-527-0002 Tel: 82-31-716-6851 / 2 Fax: 310-527-0004 Fax: 82-31-716-6875 e-mail: inf@sky-technlgy.net e-mail: inf@sky-technlgy.c.kr website: www.sky-technlgy.net website: www.sky-technlgy.c.kr 7