Technical Manual Canta 770-D/470-D & 270/270-D (including 770-D & 470-D Open BTE features) GN ReSound as Global Technical Operations gto.gnresound.com Lautrupbjerg 9 DK-2750 Ballerup Denmark Phone: + 45 45 75 23 16 E-Mail: Service@gnresound.dk
Table of contents Description...3 770-D & 470-D Open Fitting Considerations...4 Typical performance data IEC 118-7/ANSI... 5-9 Part lists... 10-13 Accessories for FlexVent...14 Diagram...15 Amplifi er with DC test points...16 Programming cable...17 Microphone complete...18 Receiver complete...19 Amplifi er transducer solder points...20 Coating instructions - amplifi er...21 Instrument complete in housing...22 Battery door assembling...23 Housing screws and battery door w/colour marker...24 Replacement of the hook filter stick...25 Service tools...26 Service & Repair notes...27 Page 2 of 27
Description Key Features 770-D: Adaptive Digital Feedback Suppression (DFS). Adaptive Directionality. Active Microphone matching. 14-band Fast-Syllabic Noise Reduction. 14-band Cochlea Dynamics compression. In-Situ Loudness scaling. Up to 4 environmental programmes. easily accessed by push-button. 64-band Spectral Enhancement. Key Features 470-D: Fast Adaptive Digita Feedback Suppression (DFS). Fixed Directionality. Active Microphone Matching. 14-band Fast-Syllabic Noise (one setting only). 14-band Cochlea Dynamics compression. In-Situ Loudness scaling. Up to 3 environmental programmes, easily accessed by push-button. Key Features 270: Cochlea Dynamics sound processing. 6-band full dynamic range compression. 1 programme and an additional comfort mode. Audiogram + fitting rule. Feedback manager. Key Features 770-D Open: Software based digital signal procesor. Key Features 470-D Open: Dual microphone. Software based digital signal procesor. Digital Dynamic Directionality: Dual microphone. - Fast acting Adaptive Directionality. ComforTec Open Fitting Technology ComforTec Open Fitting Technology - WarpOpen Wide Dynamic Range Compression - WarpOpen Wide Dynamic Range for open fitting. Compression for open fi tting. - Fast Acting Noise reduction with low level expansion. - Fast Acting Noise reduction with low - Super fast signal processing to avoid echoing effect. level expansion. - Stabilizer DFS, Digital Feedback Suppression - Super fast signal processing to avoid for open fitting. echoing effect. - Stabilizer DFS, Digital Feedback Suppression for open fi tting. Key Features 270-D: Cochlea Dynamics sound processing. 6-band full dynamic range compression. Slow adaptive DFS Audiogram + fitting rule. Programmable multi-memory Test software for Fonix system: Make sure that Fonix II Canta 5.2.1 or higher is installed as this software has all models included. Typical Battery Life Up to 257 hours. Page 3 of 27
770-D Open Fitting Considerations As a new feature Canta 770-D & 470-D can be fi tted as an open fi tting. This option is applied by installing the ComforTec TM algorithm into a standard Canta 770-D or 470-D. This new algorithm is optimized to enable Hearing Instruments with less occlusion and feedback. The ComforTec TM package can only be installed with Aventa fi tting software, NOT by any version of Fonix II Final Device Test software. When installed it will replace the traditional software in Canta 770-D & 470-D. By testing a Canta 770-D or 470-D on a Final Device Test system, FONIX or DSA 5000, the original software package will be re-installed regardless if a ComforTec package previously has been installed. A ComforTec TM fi tting will be stored and can be re-installed during a repair of a Canta 770-D or 470-D by reading the user settings with Aventa and re-program the instrument after the fi nal device test. Canta Open and ComforTec TM technology requires Aventa 2.0 or higher. It is advisable to use a Fonix II Canta ver. 5.2.1 or higher. Page 4 of 27
Typical performance data - IEC 60118-7, 2cc coupler - 270/270-D Data in accordance with IEC 60118-7. Supply by Voltage 1.3V. Unless otherwise is stated, all measurements made without Directionality, Noise Reduction, Spectral Enhancement or DFS active. Tolerance Unit Max. output (90 db SPL input) 123 ± 4 db SPL Max. output (90 db SPL input) at 1600 Hz 114 ± 4 db SPL Full-on gain (Input 50 db SPL ) 47 ± 5 db Full-on gain (Input 50 db SPL ) at 1600 Hz 38 ± 5 db Telecoil sensitivity (1 ma/m ) 77 ± 5 db Telecoil sensitivity (10 ma/m) 97 ± 6 db Reference test gain 1600 Hz (60 db SPL input) 31 ± 6 db Total harmonic distortion at 800 Hz 1.0 max. 5.0 % at 1600 Hz 1.0 max. 5.0 % Equivalent input noise 26 max. 32 db SPL Current drain 1.1 max. 1.8 ma Note: The above data is measured on the basis of C 2.0 amp. If the C 1.5 amp is mounted the current drain is a bit higher. G[80] G[50] 270/270-D: Full-on Gain Parameter Settings 250 26 500 28 1000 32 2000 32 4000 32 6000 29 36 38 42 42 42 39 Page 5 of 27
Typical performance data - ANSI 2cc coupler - 270/270-D Data in accordance with ANSI S3.22-1996. Supply by Voltage 1.3V. Unless otherwise is stated, all measurements made without Directionality, Noise Reduction, Spectral Enhancement or DFS active. Tolerance Unit Max. output (90 db SPL input) 123 ± 4 db SPL HFA SSPL 90 117 ± 4 db SPL Full-on gain (Input 50 db SPL ) 47 ± 5 db HFA Full-on gain 41 ± 5 db Full-on telecoil sensitivity (1 ma/m ) 77 ± 6 db Full-on telecoil sensitivity (10 ma/m ) 97 ± 6 db Reference test gain HFA 34 ± 6 db Total harmonic distortion at 500 Hz 0.5 max. 5.0 % at 800 Hz 1.0 max. 5.0 % at 1600 Hz 1.0 Max. 5.0 % Equivalent input noise 26 max. 31 db SPL Current drain 1.2 max. 1.8 ma Note: The above data is measured on the basis of C 2.0 amp. If the C 1.5 amp is mounted the current drain is a bit higher. G[80] G[50] 270/270-D: Full-on Gain Parameter Settings 250 26 500 28 1000 32 2000 32 4000 32 6000 29 36 38 42 42 42 39 Page 6 of 27
Typical performance data - IEC 60118-7, 2cc coupler - 770-D/470-D Data in accordance with IEC 60118-7. Supply by Voltage 1.3V. Unless otherwise is stated, all measurements made without Directionality, Noise Reduction, Spectral Enhancement or DFS active. Tolerance Unit Max. output (90 db SPL input) 124 ± 4 db SPL Max. output (90 db SPL input) at 1600 Hz 114 ± 4 db SPL Full-on gain (Input 50 db SPL ) 50 ± 5 db Full-on gain (Input 50 db SPL ) at 1600 Hz 40 ± 5 db Telecoil sensitivity (1 ma/m ) 80 ± 5 db Telecoil sensitivity (10 ma/m) 100 ± 6 db Reference test gain 1600 Hz (60 db SPL input) 30 ± 6 db Total harmonic distortion at 800 Hz 0.7 max. 5.0 % at 1600 Hz 0.8 max. 5.0 % Equivalent input noise 27 max. 32 db SPL Current drain 1.1 max. 1.8 ma Note: The above data is measured on the basis of C 2.0 amp. If the C 1.5 amp is mounted the current drain is a bit higher. G[80] G[50] 770-D/470-D: Full-on Gain Parameter Settings 250 26 500 28 1000 32 2000 32 4000 32 6000 29 36 38 42 42 42 39 Page 7 of 27
Typical performance data - ANSI, 2cc coupler - 770-D/470-D Data in accordance with ANSI S3.22-1996. Supply by Voltage 1.3V. Unless otherwise is stated, all measurements made without Directionality, Noise Reduction, Spectral Enhancement or DFS active. Tolerance Unit Max. output (90 db SPL input) 123 ± 4 db SPL HFA SSPL 90 117 ± 4 db SPL Full-on gain (Input 50 db SPL ) 50 ± 5 db HFA Full-on gain 42 ± 5 db Full-on telecoil sensitivity (1 ma/m ) 80 ± 6 db Full-on telecoil sensitivity (10 ma/m ) 100 ± 6 db Reference test gain HFA 34 ± 6 db Total harmonic distortion at 500 Hz at 800 Hz 0.6 1.0 max. 5.0 max. 5.0 % % at 1600 Hz 1.0 max. 5.0 % Equivalent input noise 26 max. 31 db SPL Current drain 1.5 max. 1.8 ma Note: The above data is measured on the basis of C 2.0 amp. If the C 1.5 amp is mounted the current drain is a bit higher. G[80] G[50] 770-D/470-D: Full-on Gain Parameter Settings 250 26 500 28 1000 32 2000 32 4000 32 6000 29 36 38 42 42 42 39 Page 8 of 27
Typical performance data 2cc coupler 140 130 120 110 100 90 Max. output (OSPL90) 60 50 40 30 20 10 Full-on gain Input 50dB SPL and reference test gain input 60 db SPL Full-on gain 50 db SPL input Reference test gain 60 db SPL input 80 100 0 1000 10000 100 1000 10000 Page 9 of 27
Part list Item Part No. Item Part No. Screw, self-cutting 1x6 mm 0009-069 Colour marker, red 25 pcs 15086300 Screw, self-cutting 1x4 mm 0009-009 Colour marker, blue 25 pcs 15086301 Screw sleeve 0011-099 Silicone coating KR112, 10ml 9500-719 Screw 1x3 mm 0001-129 Coating EGC-1700, 100ml 15290401 Hook filter stick ( 4 pcs) 0414-469 Coating Molykote 1908-209 Screen receiver 15054600 Wire, ESW, 7x32μ, green 12mm 15129812 Foam rubber pad 0424-389 Wire, ESW, 7x32μ, amber 12mm 15129712 Foam rubber pad small 0424-619 Wire, ESW, 7x32μ, red 13mm 15129613 Axle, ON/OFF 0300-089 Wire, ESW, 7x32μ, green 9mm 15129809 Contact spring for ON/OFF button 0304-039 Wire, ESW, 7x32μ, amber 10mm 15129710 Locking pin, ON/OFF 0300-119 Wire, ESW, 7x32μ, red 9mm 15129609 Receiver 23x97/ED6453 15050800 Wire, ESW, 7x32μ, green 13mm 15129813 Nipple receiver 0432-279 Wire, ESW, 7x32μ, red 14mm 15129614 Suspension receiver 0424-979 Programming cable (R) 10123001 Receiver complete (incl. nipple + wires) 15065400 Programming cable (L) 10123002 Microphone 9667GX1 / EM4368-C54 10131601 Flex-strip, 4 terminal (package of 10 ) 10120502 Nipple microphone (front) 0432-299 Flex-strip, 4 terminal (package of 25 ) 10120503 Nipple microphone (rear) 15050700 Kit, progr. cable w/flex (R) 10127301 Tube silicone (feet), uncut 12295-000 Kit, progr. cable w/flex (L) 10127302 Front microphone complete (incl. nipple + wires) 15065500 Soldering material/tin Sn62 ø 0.32mm 1903-239 Rear microphone complete (incl. nipple + wires) 15065600 Soldering material/tin Sn62 ø 0.46mm 1903-249 Glue, Loctite 420 LOC 02MF1 Service tool, Amplifier 15071800 Rubber glue 1901-061 Service tool, HI 15071900 Primer, Loctite 770 1901-359 Ventplate, 40 pcs red & 40 pcs blue 15247100 Amplifier complete C2.0 15115800 FlexVent box (complete kit in box) 15224900 Switch with flange PB 95, pre-cut 15070000 Insert vent, large 40 pcs 15246900 Telecoil, Y07-32-FFN, 6 mm wires 15065200 Insert vent, medium 40 pcs 15247000 PCB - contact board, asm. 15373300 Flex tool 5 pcs 15246800 PCB - contact compl (w/pb and contact module) 15051400 Tube ø3 x ø2, bended 80 o (PVC) 40 pcs 15247200 Contact module 15050900 FlexVent kit package 15247300 CH-74 75925350 Page 10 of 27
Part list colours/housings for CANTA 770-D Item Part No. Item Part No. Platinum: Housing complete w/serial No. 15065800 Dark brown: Housing complete w/serial No. 15065804 Hook 1636-409 Hook 1636-449 Battery door w/serial No.# 15065700 Battery door w/serial No.# 15065704 Battery door blank 15052300 Battery door blank 15052304 Button ON/OFF 15373400 Button ON/OFF 15373404 Microphone filter 0406-369 Microphone filter 0406-409 Cover push-button 15072800 Cover push-button 15072804 Light blonde: Housing complete w/serial No. 15065801 Anthracite: Housing complete w/serial No. 15065806 Hook 1636-419 Hook 1636-469 Battery door w/serial No.# 15065701 Battery door w/serial No.# 15065706 Battery door blank 15052301 Battery door blank 15052306 Button ON/OFF 15373401 Button ON/OFF 15373406 Microphone filter 0406-379 Microphone filter 0406-429 Cover push-button 15072801 Cover push-button 15072806 Medium blonde: Housing complete w/serial No. 15065802 Marble grey:: Housing complete w/serial No. 15065807 Hook 1636-429 Hook 1636-479 Battery door w/serial No.# 15065702 Battery door w/serial No.# 15065707 Battery door blank 15052302 Battery door blank 15052307 Button ON/OFF 15373402 Button ON/OFF 15373407 Microphone filter 0406-389 Microphone filter 0406-439 Cover push-button 15072802 Cover push-button 15072807 Dark blonde: Housing complete w/serial No. 15065803 Hook 1636-439 Battery door w/serial No.# 15065703 Battery door blank 15052303 Button ON/OFF 15373403 Microphone filter Cover push-button 0406-399 15072803 Housing complete includes: Hook, Battery door, cover for push-button, pads, receiver screen. Page 11 of 27
Part list colours/housings for CANTA 470-D Item Part No. Item Part No. Light blonde: Housing complete w/serial No. 15067001 Dark brown: Housing complete w/serial No. 15067004 Hook 1636-419 Hook 1636-449 Battery door w/serial No.# 15065701 Battery door w/serial No.# 15065704 Battery door blank 15052301 Battery door blank 15052304 Button ON/OFF 15373401 Button ON/OFF 15373404 Microphone filter 0406-379 Microphone filter 0406-409 Cover push-button 15072801 Cover push-button 15072804 Medium blonde: Housing complete w/serial No. 15067002 Marble grey: Housing complete w/serial No. 15067007 Hook 1636-429 Hook 1636-479 Battery door w/serial No.# 15065702 Battery door w/serial No.# 15065707 Battery door blank 15052302 Battery door blank 15052307 Button ON/OFF 15373402 Button ON/OFF 15373407 Microphone filter 0406-389 Microphone filter 0406-439 Cover push-button 15072802 Cover push-button 15072807 Housing complete includes: Hook, Battery door, cover for push-button, pads, receiver screen. Part list colours/housings for CANTA 270 & 270-D Item Part No. Item Part No. Medium blonde: 270: Housing compl. w/serial No. 15139402 Dark brown: 270: Housing compl. w/serial No 15139404 270-D:Housing compl.w/serial No. 15330402 270-D: Housing compl. w/serial No 15330404 Hook 1636-429 Hook 1636-449 Battery door w/serial No.# 15065702 Battery door w/serial No.# 15065704 Battery door blank 15052302 Battery door blank 15052304 Button ON/OFF 15373402 Button ON/OFF 15373404 Microphone filter 0406-379 Microphone filter 0406-409 Cover push-button 15072802 Cover push-button 15072804 Housing complete includes: Hook, Battery door, cover for push-button, pads, receiver screen. Page 12 of 27
Part list hearing instrument complete and replica Replica HI compl 770-D*, all colours Item Part No. Platinum 15069900 Light blonde 15069901 Medium blonde 15069902 Dark blonde 15069903 Dark brown 15069904 Anthracite 15069906 Marble grey 15069907 HI compl 770-D, all colours Item Part No. Platinum 15051900 Light blonde 15051901 Medium blonde 15051902 Dark blonde 15051903 Dark brown 15051904 Anthracite 15051906 Marble grey 15051907 HI compl 470-D, all colours Item Part No. Light blonde 15066701 Medium blonde 15066702 Dark brown 15066704 Marble grey 15066707 HI compl 270, all colours Item Part No. Medium blonde 15126202 Dark brown 15126204 HI compl 270-D, all colours Item Part No. Medium blonde 15284402 Dark brown 15284404 Page 13 of 27
Accessories for FlexVent The flexvent system should only be used with Canta 770-D or 470-D configured as an open canal product using Aventa ver. 1.4 or higher fitting software. See also our Marketing Product Information for more details. Flex tool, 5 pcs p/n 15246800 Vent plates, 40 pcs red and 40 pcs blue p/n 15247100 PVC tube, bended, 40pcs p/n 15247200 Insert vent, large 40 pcs p/n 15246900 Insert vent, medium 40 pcs p/n 15247000 FlexVent box (complete kit) p/n 15224900 FlexVent kit package p/n 15247300 Page 14 of 27
Diagram - 2 mic version DC voltages are measured relative to the negative battery spring Page 15 of 27
Amplifier with DC test points DC voltages are measured relative to the negative battery spring. Page 16 of 27
Programming cables Programming cable with fl ex strip. Insert the programming cable with the fl ex strip contacts turned towards the push-button. Page 17 of 27
Microphones complete Rear microphone complete for Canta 770-D/470-D, 770/470 Open p/n 15065600 Green wire, 13 mm p/n 15129813 Amber wire, 10 mm p/n 15129710 Red wire, 13 mm p/n 15129613 Nipple p/n 15050700 Add Primer 770 round the nipple before gluing with Loctite 420. Rear mic wire lengths used on hearing instrument complete with amp C 2.0 received from stock: Green wire, 9 mm p/n 15129809 Amber wire, 10 mm p/n 15129710 Red wire, 9 mm p/n 15129609 see also page 27 Service & Repair Notes Add EGC-1700 coating onto the soldering points after soldering - let dry for 15 Sec - add another layer of EGC-1700. Nipple p/n 0432-299 Front microphone complete for all models - p/n 15065500 Add CH-74 on Mic to avoid shorting between Mic and wires. Amber wire, 18 mm p/n 15129718 Red wire, 13 mm p/n 15129613 Green wire, 12 mm p/n 15129812 Add Primer 770 to the nipple before gluing with Loctite 420. Silicone tube p/n 12295-000 uncut (kept on stock in feet: 30.5cm/foot) The tube is cut to 1 mm. Front mic wire lengths used on hearing instrument complete with amp C 2.0 received from stock: Green wire, 12 mm p/n 15129812 Amber wire, 12 mm p/n 15129712 Red wire, 13 mm p/n 15129613 see also page 27 Service & Repair Notes Page 18 of 27
Receiver complete Green wire, 13 mm p/n 15129813 Nipple p/n 0432-279 Add Primer 770 to the nipple before gluing with Loctite 420. Add EGC-1700 coating onto the soldering points after soldering. Be sure to keep the coating onto the soldering points only. Let dry for 15 Sec. and add another layer of EGC-1700. Red wire, 14 mm p/n 15129614 Rubber glue p/n 1901-061 to keep the wires in place. Suspension p/n 0424-979 Make sure to fi t the receiver tube correctly to the hook (no glue). The receiver must not be twisted. 1. Insert receiver with hook using the screw sleeve as fixture (here shown in a 770-D/470-D housing). 2. Fit the suspension to the pin. Make sure that the receiver is not touching the pads and the screen. Page 19 of 27
Amplifier with transducer solder points Green - telecoil Red - telecoil Green - rear mic Red - front mic Red - rear mic Green line Amber, front mic Green, front mic Amber - rear mic Placement of the transducer wires, 770-D/470-D Green - rec Red - rec Canta 270 Placement of the mics and the telecoil Note: Regarding lengths of mic wires please also see page 27 Service & Repair Notes. The telecoil is placed parallel to the front mic. chamber and the green line on the amplifier. It is kept in place by the subsequent coating with KR112 Page 20 of 27
Coating instructions - amplifier 1 2 3 Add Molykote to the contact module by using a syringe. 4 5 The Molykote must fill up the space between contact module and board. Turn around the amplifier and fill from this side. 6 The indicated areas are covered with coating KR112. The indicated area is covered with Molykote. Cover the corner in the opposite side. Cover the corner where the contact module is fitted. Remove any excess Molykote as shown in the picture. Carefully clean the pins. There must be Molykote left in the area between the yellow arrows. Page 21 of 27
Instrument complete in housing Picture 1 Picture 2 Cover for push-button - p/n 15072802 - must be placed correctly as shown in pictures 1 and 2. The 2 locking pins p/n 0300-119, must be turned differently. The 2 locking pins p/n 0300-119, must be turned differently. See picture 3. Picture 3 Page 22 of 27
Battery door assembling Contact spring Axle ON/OFF ON/OFF button Contact spring p/n 0304-039 Axle ON/OFF p/n 0300-089 ON/OFF button p/n 1630-1x9 Attach the contact spring to the ON/OFF button. Make sure it is placed correctly. Push ON/OFF button and the battery door together and mount the axle to keep the parts fi xed. Make sure the axle is pressed down to the bottom. Battery door complete assembled with ON/OFF button, contact spring. Page 23 of 27
Housing screws and battery door w/ colour marker Colour markers (25 pcs in a bag): Red p/n 15086300 Blue p/n 15086301 Screw p/n 0001-129 Colour markers red (Right),or blue (Left) are to be inserted into the slot in the battery door. Screw p/n 0009-009 Screw p/n 0009-069 Page 24 of 27
Replacement of the hook filter stick 3 2 1 1. Replacement of the filter: Place the hook wth filterstick into the hole. Press until a small click sound appears and slide the HI towards the new filters until the used filter is off. 2. Mount the new filter: Press the HI over a new filter. Pull the instrument straight up and a new filter will be placed into the hook. 3. Fit the filter: Press the hook with the new filter firmly down in the hole to ensure that the filter is securely fitted into the hook. The hook filter sticks are delivered with 4 pcs. in a frame - p/n No. 0414-469. Page 25 of 27
Service Tools Tool for amp p/n 15071800 Amp is fixed in the tool for replacement of the push-button and other work The service tools must always be used when working on either amp or HI as the tools are working as a heat sink. Tool for HI p/n 15071900 HI is fixed when working on it Holes to fix the mic and rec Page 26 of 27
Service & Repair Notes Amplifier complete C2.0 : Mic complete : On this new layout the soldering points for mics have changed. The points for front mic are placed more appropriate as they are no longer underneath the telecoil. Install the Fonix II Canta test software ver. 4.1.0 as this software have all models included. Old version spare amplifier can be used up and should only be replaced in a repair situation if any faults is found. Canta 270 will be mounted with C2.0 amplifier on introduction. When ordering the mics complete they will be mounted with wires with suitable lengths for both amplifier C1.5 and C2.0. It means that some of the lengths are a bit longer on mic complete than on the hearing instrument complete C2.0 when receiving a new on stock. On page mic complete all lengths are mentioned. Amplifi er C 1.5 Amplifier C 2.0 Page 27 of 27