1. Manuals
  2. Brands
  3. Frye Manuals
  4. Test Equipment
  5. FONIX 8000
  6. Maintenance manual

Frye FONIX 8000 Maintenance Manual

Hearing aid test system
Hide thumbs
Table of Contents

Advertisement

Quick Links

FONIX® 8000
MAINTENANCE MANUAL
June 13, 2012
Copyright © 2012 Frye Electronics, Inc.
All Rights Reserved. Rev. June 13, 2012

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the FONIX 8000 and is the answer not in the manual?

Questions and answers

Related Manuals for Frye FONIX 8000

Summary of Contents for Frye FONIX 8000

  • Page 1 FONIX® 8000 MAINTENANCE MANUAL June 13, 2012 Copyright © 2012 Frye Electronics, Inc. All Rights Reserved. Rev. June 13, 2012...

  • Page 3: Table Of Contents

    Contents Chapter 1: Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1.1 Signal Generation Overview .
  • Page 4 4.1.6 The Printer Interface Board has: ........... . 13 4.1.7 The Daughter Board has:.
  • Page 5 6.2 Electronics Module ...............38 6.2.1 Removal and Replacement of the Wrap-around .

  • Page 7: Chapter 1: Overview

    Chapter 1: Overview This FONIX 8000 Hearing Aid Test System is designed to test hearing aids. There are two major types of hearing aid tests: coupler and real-ear. Coupler measurements are performed in a sound chamber using a coupler or artifi- cial ear that directs the sound to a measurement microphone.

  • Page 8: Signal Generation Overview

    1.1 Signal Generation Overview 1.1.1 Digital Basis of the Composite Signal The composite signal is generated by reading 256 16-bit data words in RAM sequential- ly and doing it over and over again. The program is able to adjust the individual am- plitude of each signal component in the series so that it provides a correct amplitude of drive at the test point in the chamber for each test frequency.

  • Page 9: Special Distortion Measurements

    a series of spikes with very little in between, or an impulse drive. The disadvantage with this type of drive is that it makes very heavy demands on the dynamic range of the hearing aid under test. Hearing aids are not known for their large dynamic ranges, so this type of waveform must be avoided.
  • Page 10 1.2.1.2 Aliasing A further requirement is that the bandwidth of the measured signal be controlled so that its frequency does not exceed a value of 1/2 the sampling rate. This fre- quency amplitude control is done with an aliasing filter. A conservative design stops the analysis well before the frequency limit is reached.

  • Page 11: Chapter 2: Specifications

    Chapter 2: Specifications ACOUSTICAL OUTPUTS Frequencies: 200-8000 Hz in 100 Hz intervals (user interface) 200-8000 Hz in 50 Hz intervals (RS232) Frequency Accuracy: Amplitudes: 40-100 dB in 5 dB intervals coupler, 40-90 dB in 5 dB intervals real-ear (user interface) 40-100 dB in 0.01 dB intervals coupler, 40-90 dB in 0.01 dB intervals real-ear (RS232) Accuracy...

  • Page 12: Digital Readout Of Sound Pressure Level

    DIGITAL READOUT OF SOUND PRESSURE LEVEL Frequency Range: 200-8000 Hz Amplitude Range: 0-150 dB SPL Resolution: 0.1 dB Accuracy: Coupler mic: ±1.0 dB ±1 digit, 300-5000 Hz, ±2 dB ± 1 digit all other frequencies Probe mic: ± 2.5 dB ± 1 digit, 250-8000 Hz Ref mic: ±...

  • Page 13: Electronics Module

    Frequency Range: 50-60 Hz. Power Requirement: 0.6 A. Fuse: T 630mAL, 0.63A / 250 V~, Type T, IEC 60127-2 Sheet III (Slo-Blo Type, Glass, 5mm x 20mm). Qty 2. ELECTRONICS MODULE Size: 17.3"W x 10.8"D x 6.5"H (43.9 x 27.4 x 16.5 cm). Weight: 14.3 lbs.(6.49 kg).

  • Page 14: Environmental Conditions

    Usable headphone impedance: 32 ohms to 600 ohms (intended for Walkman style headphones) 2.14 GUARANTEE The FONIX 8000 and its accessories are guaranteed to be free from manufacturing defects which would prevent the products from meeting these specifications for a period of one year from date of purchase. Maintenance Manual...

  • Page 15: Chapter 3: Specification Test Procedure

    Chapter 3: Specification Test Procedure 3.1 Source Frequency Accuracy Instrument required: Frequency counter accurate to 0.1 percent and capable of mea- suring 1000 Hz. Setup: Enter the Coupler screen. From the menu, set the static tone to single, and the output transducer to Telewand. Exit the menu. Set the amplitude to 100 mA/M and the frequency to 1000Hz.

  • Page 16: Source Output Amplitude Accuracy

    Measurements: Measure the voltage on the voltmeter and set the dB relative to show 0dB at the 100mA/M setting. Reduce the output level on the 8000 to the 56.2mA/M setting and note that the meter reading goes down 5 dB (+/- .5 dB) plus the tolerance of the voltmeter.

  • Page 17: Battery Simulator Voltage Accuracy

    0.444 mA 10 mA/M 0.790 mA 17.8 mA/M 1.404 mA 31.6 mA/M 2.485 mA 56.2 mA/M 4.44 mA 100 mA/M For example, if the telecoil amplitude is set to 10 mA/M, the meter should read .444 mA within tolerance. 3.6 Battery Simulator Voltage Accuracy Instrument required: Precision D.C.

  • Page 19: Chapter 4: Circuit Description

    Chapter 4: Circuit Description 4.1 General Description 4.1.1 The following boards are used in the 8000 Main Module: a. Single Board Computer b. Daughter Board c. Connector Board d. Parallel Interface e. Printer Interface f. Offline Power Supply g. Front Panel Keyboard 4.1.2 The following boards are used in the 8050 and 8120 Sound Chambers: a.

  • Page 20: The Daughter Board Has

    The interface to the Daughterboard. Two channel source attenuators, power amps, and relays directing to module 1 or 2. The Frye Peripheral Interface(FPI) connectors to Module 1 and 2. Four channel differential measurement microphone signal receivers. The Line input and Voice Microphone inputs.

  • Page 21: The Breakout Board Has

    4.1.12 The Breakout Board has: The connector from the Chamber Board. The Battery Pill, the White LED, the Speaker and both Telecoil jacks. The Power/Status LED. 4.1.13 The Probe Board has: The FPI connector from the Connector Board. An RS232 interface between the FPI and the microcontroller. A microcontroller that interfaces between the SBC and the circuits on this board.

  • Page 22: 8000 With 8120 Chamber System Block Diagram

    8000 Circuit Description 4.2.2 8000 with 8120 Chamber System Block Diagram 2010-10-27 8000 with Probe and 8120 Chamber System Block Diagram: Main Module Probe Module Connector Board Probe Board SF Speaker A SF Speaker B Probe Mic A Probe Mic B Host (X2) Headset...

  • Page 23: Circuit Block Diagrams

    4.3 Circuit Block Diagrams 8000 Circuit Description 4.3.1 Daughter Board Block Diagram 2010-10-27 Daughter Board Block Diagram CPU JTAG CPU U1 Connector Shift Register 8 outputs UART RS232 PC104 Buss Resistor dividers for Connector Interface +/-15V, +12V, +/-10V, ADC2-9 +/-8V, and +5V supplies CPLD Dual Key Matrix...

  • Page 24: Connector Board Block Diagram

    8000 Circuit Description 4.3.2 Connector Board Block Diagram 2010-10-27 Connector Board Block Diagram Connector to Daughter Board J5 RS232 Chan ChanA ChanA Source Power Source A Atten Relay Module 1 ChanA&B Amp U4 MIC 1A&1B Q1, K1 connector Instrumentation Amps U7, U8, U9, U10 Chan ChanB...

  • Page 25: Chamber Board Block Diagram

    8000 Circuit Description 4.3.3 Chamber Board Block Diagram 2010-10-27 Chamber Board Block Diagram CPU U1 Conn J2 JTAG RS232 Speaker 7020 Connector RS232 SRC_AB Interface Relay Chamber Q2, K1 Connector RS232 PowStat PowStat Tcoil & LED D1 Twand Driver Switches U2, U3, MIC_AB Connector...

  • Page 26: Probe Board Block Diagram

    8000 Circuit Description 2010-10-27 4.3.4 Probe Board Block Diagram Probe Board Block Diagram Speaker Speaker JTAG Conn J2 Relays Connector Connector Q2, Q3, J5A, J5B SRC_AB K1, K2 RS232 RS232 Interface RS232 PowStat ER3 and PowStat Headphone Jack LED D1 Driver Switches U2, U3, U4,...

  • Page 27: Breakout Board Block Diagram

    4.3.6 Breakout Board Block Diagram 4.4 Circuits Detailed Description All the circuits on each board are described here. The Chamber and Connector boards can be configured more than one way. On these boards, some of the circuits are left off in each configuration. 4.4.1 Source Circuits Signal Flow 4.4.1.1 SBC: The source signal originates at the CODEC on the SBC.
  • Page 28 and R72 which are then amplified and named ADC12 and ADC13. The return currents finally arrive at system Mecca J9. Page 6: ADC12 and ADC13 arrive at U1 pins 9 and 10. 4.4.1.3 Connectorboard schematic (061-x172-0x) OUTGOING SIGNAL: Page 3: SOURCE_A and SOURCE_B arrive on pins 6 and 7 of J5. The SPI Buss from the Daughterboard arrives on J5 pins 15, 16, and 17 (SPIMOSI, SPICLK, SPICSL).
  • Page 29 to either the Telecoil or the Telewand. The Telewand signal is connected to J4 pin 1. If this is a “Remote Chamber Module”, then the Telecoil signal is connected to J3 pin 4. Q2 buffers the SPK_A/B signal from U1-A on page 1. The COIL_A/B and LOOP/WAND signals that control U3-A and U2-A and U4-A come from U1-A on page 1.

  • Page 30: Measurement Microphone Circuits Signal Flow

    Page 2: SRC_A is then connected to K1, which is used to direct it to either speaker A at J5-A pin T4, or toward the ER3(U2-A pin 8) and the Headphone(U4-A pin 8). SRC_B is then connected to K2, which is used to direct it to either speaker B at J5-B pin T2, or toward the ER3(U2-A pin 2) and the Headphone(U4-A pin 2).
  • Page 31 4.4.2.2 Probeboard schematic (061-0177-0x) Page 3: The Left Reference Microphone signal arrives at J7 pin 1. U6 and associ- ated components re-reference the microphone ground from chassis to the local Analog Ground. The Left Probe Microphone signal arrives at J7 pin 3.

  • Page 32: Sbc To Microcontroller Digital Communication Interface

    4.4.2.4 Daughterboard schematic (061-0171-0x) Page 3: MIC_1A, MIC_1B, MIC_2A and MIC_2B arrive on J5 pins 1, 2, 3 and 4. Page 4: MIC_1A, MIC_1B, MIC_2A and MIC_2B are all connected to U7-A and U7-B. This part connects one of the microphone signals to ChanA, and another one to ChanB.

  • Page 33: Power Supply And Voltage Regulators

    Boot Mode pins (28, 15) so that when the TTL DTR goes low, the reset input goes low briefly, and the Boot Mode pin is held low. This puts the microcontroller into boot mode so that the SBC can then make it jump to the Firmware, or update the Firmware in the microcontroller.
  • Page 34 fused by F2 and then used on the Daughterboard. U24 is the +12V regu- lator. U25 is the +10V regulator. U23 is the +8V regulator. U20 is the +3.3D regulator. L1, R123 and C82 filter the +3.3D so it can be used as the +3.3A supply.

  • Page 35: Keyboard Interface Circuits

    4.4.5 Keyboard Interface Circuits 4.4.5.1 Keyboard Schematic (061-0166-XX) The cathode of each LED is connected to ground. The anodes are connected to pins 9, 10 and 11 of J1. The Reset key connects to ground and to pin 19 of J1. The rest of the keys are wired into an x-y matrix with 5 columns KC0-KC4 and 5 rows KR0-KR4.

  • Page 36: Turntable Circuits

    4.4.7 Turntable Circuits 4.4.7.1 Chamberboard schematic (061-x178-0x) Page 1: The Turntable control signals originate on U1-A pins 23-26, 37 and 38. They are then sent to the Turntable Board via J11. The shaft encoder sig- nals arrive on J11 pins 12 and 14 and then connect to U1-A pins 29 and 30.

  • Page 37: Battery Simulator Circuits

    4.4.8.3 Breakout Board schematic (061-0179-00) Page 1: The Power/Status LED signal arrives on J1 pin 13 and then connects to D1 anode. The white LED signal arrives on J1 pin 9 and then connects to J6 pin 1. 4.4.9 Battery Simulator Circuits 4.4.9.1 Chamber Board Schematic (061-x178-0x) Page 4: U1 pin 9 outputs a voltage of from 0 to 2.5V.

  • Page 38: Misc Circuits

    4.4.10.2 Printer Interface Board (061-1300-00) This board is Fujitsu model FTP-622DCL001. The parallel interface printer data ar- rives at CN1. The power comes in CN10. The printer head plugs into CN8. The head up and paper out switches plug into CN3. The stepper motor plugs into CN13. Note: There is no schematic for this board.

  • Page 39: Chapter 5: Calibration

    Place the M1958E in a sound level cali- brator. Position the cursor with the left/right key till the selected level matches the calibrator level. Press the Start key to make the calibration. There are three possible microphones on the FONIX 8000 analyzer: • Coupler microphone (M1950E or M1958E) • Probe microphone • Reference microphone...

  • Page 40: Calibrating The Coupler Microphone

    • Rectangular reference microphone adapter (rectangular reference micro- phone on integrated probe microphone) Sound calibrator(QC-10) 14 mm-to-1 inch microphone adapter Probe microphone adapter Figure 5.1: Calibration equipment Rectangular reference microphone adapter 5.1.1 Calibrating the Coupler Microphone This procedure describes how to calibrate the coupler microphone. 1. From the Opening Screen, press [MENU] to enter the Setup Menu.

  • Page 41: Calibrating The Rectangular Reference Microphone

    5. Attach a new probe tube to the probe microphone. 6. Thread the probe microphone through the edged side of the probe micro- phone adapter so that the probe tube sticks out a coupler of millimeters from the other side of the adapter. 7.

  • Page 43: Chapter 6: Service And Repair

    Chapter 6: Service and Repair 6.1 Fuse Replacement If a fuse is blown for some reason, replace it with a like kind and voltage rating. Warning: Use of fuses with a different type or rating could result in fire and/or electric shock hazards.

  • Page 44: Electronics Module

    6.2 Electronics Module 6.2.1 Removal and Replacement of the Wrap-around Wrap-around Removal The electronics module can be serviced by first removing the wrap-around. Turn off the power to the 8000 and remove the line cord. Remove the nine screws securing wrap-around, located at the back (qty 5) and sides (qty 4) of the instrument.

  • Page 45: Removal Of Bezel

    6.2.2.2 Removal and Installation of Connector Board Disconnect the Dual USB Host cable that may be there, the Serial Cable, and cable to Daughter Board. Remove screws (2) at rear panel securing the amplifier brackets. Remove nuts on Line Input and Mic Input jacks on the rear panel. The Connector Board is now ready to be removed.

  • Page 46: Replacement Of Keyboard

    Reassembly of the bezel should be done in reverse order, taking care not to over- tighten screws. 6.2.4 Replacement of Keyboard The keyboard may be removed with or without removing bezel. 6.2.4.1 Removal of Keyboard when removing the bezel. Remove front bezel (see 6.2.3). Remove 7 nuts securing keyboard to bezel. Do not remove 2 nuts recessed in bezel, they secure the keyboard assembly together.

  • Page 47: Replacement Of Switching Power Supply

    USB ports. By default, the FONIX 8000 uses the USB port for the connection. You will need to configure the BIOS setting of the system in order to use the serial port instead.
  • Page 48 Setup screen, and reboot the analyzer. Your new setting will now be in place. Note: To connect the FONIX 8000 to a computer using the serial port, you must use a null modem cable instead of a standard RS232 cable.

  • Page 49: Chapter 7: Maintenance

    Chapter 7: MAINTENANCE For your safety, disconnect the 8000 from main power while cleaning. Wipe the 8000 with a slightly moist cloth. Use plain water or water with mild dish- washing detergent. Wipe away any detergent with a moist cloth, then dry the 8000. Never allow fluid to enter: • The 8000 Enclosure • The 8000 switched power entry module.
  • Page 50 Maintenance Manual...

  • Page 51: Chapter 8: Safety Information

    Chapter 8: Safety Information 8.1 Rear Panel Safety Markings Symbol Meaning “For continued protection against fire and electrical shock, replace only with same type and rating fuse.” The fuse specifications indicated on the 8000 Rear Panel are as follows: Marking: T 630mAL Type: Time lag...

  • Page 52: Safety Classification For Iec 60601-1

    The allowable leakage currents of IEC 60601-1: 2005 must not be exceeded. IEC 60601-1: 2005 should be consulted when assembling such a system. The FONIX 8000 Test System is equipped with USB and RS232 connections that will allow you to connect to a personal computer and exchange data. You will also need a software program, such as WinCHAP, on your Windows computer that can communicate with the analyzer.

  • Page 53: Electromagnetic Compatibility

    FRYERS protocol. See www.frye.com for details. Failure of the hardware connection or software program could result in incorrect transfer of data. Connecting the 8000 to other equipment could result in previously unidentified risks to patients, operators of third parties. The installer should identify, analyze and control these risks.

  • Page 55: Chapter 9: Electromagnetic Compatibility

    Shielded USB RS232 9 Conductor Shielded Accessories with which the 8000 complies with IEC 60601-1-2 Description Manufacturer Model/Part Number Sound Chamber Frye Electronics, Inc. 8120, 8050 Coupler Microphone Frye Electronics, Inc. M1958E LCD VGA monitor Telewand Frye Electronics, Inc. 043-1053-00...
  • Page 56 Warning: The 8000 should not be used adjacent to or stacked with other equipment. If ad- jacent or stacked use is necessary, the 8000 should be observed for normal operation in the configuration in which it will be used. Guidance and manufacturer’s declaration – electromagnetic emissions The 8000 is intended for use in the electromagnetic environment specified below.
  • Page 57 Guidance and manufacturer’s declaration – electromagnetic immunity The 8000 is intended for use in the electromagnetic environment specified below. The customer or the user of the 8000 should assure that it is used in such an environment. Immunity test IEC 60601 test level Compliance level Electromagnetic envi- ronment—guidance...
  • Page 58 Guidance and manufacturer’s declaration – electromagnetic immunity The 8000 is intended for use in the electromagnetic environment specified below. The customer or the user of the 8000 should assure that it is used in such an environment. Immunity test IEC 60601 test level Compliance Electromagnetic environment level...
  • Page 59 Recommended separation distances between portable and mobile RF communications equipment and the 8000 The 8000 is intended for use in an electromagnetic environment in which radiated RF distur- bances are controlled. The customer or the user of the 8000 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF commu- nications equipment (transmitters) and the 8000 as recommended below, according to the maximum output power of the communications equipment.

Table of Contents