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OSCILLA USB310 Service Manual

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ID: 1530 / ver. 205

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Summary of Contents for OSCILLA USB310

  • Page 1 ID: 1530 / ver. 205...

  • Page 2: Table Of Contents

    1. Table of content 1. TABLE OF CONTENT................................. 2 2. SCHEMATICS ..................................3 3. CIRCUIT DESCRIPTION, PCB ............................5 4. TOP ASSEMBLY DRAWING ............................. 7 5. BOTTOM ASSEMBLY DRAWING ........................... 8 6. PART LIST, PCB .................................. 9 7. HW ASSEMBLY OF AUDIOMETER AND HEADSET ....................14 8.

  • Page 3: Schematics

    2. Schematics ID: 1530 / ver. 205...
  • Page 4 ID: 1530 / ver. 205...

  • Page 5: Circuit Description, Pcb

    3. Circuit description, PCB The DA7 PCB can be used in the production of two different main product types, with or without Audio Streaming capabilities. The type without Audio Streaming capabilities are mounted without microphone components, without uSDcard components and with a smaller ARM7 MCU, which is documented in the component list.
  • Page 6 Output stages (Left channel described) The output stages are class AB push-pull stages with output capacitors. The output transistors are coupled as common emitters to allow rail-to-rail output swing. The paralleled differential current outputs from the DAC’s drive the base and emitter of the input transistor T1. This converts the balanced signal to single-ended.

  • Page 7: Top Assembly Drawing

    Top Assembly Drawing ID: 1530 / ver. 205...

  • Page 8: Bottom Assembly Drawing

    5. Bottom Assembly Drawing ID: 1530 / ver. 205...

  • Page 9: Part List, Pcb

    6. Part list, PCB Part Value Device Package Description 7474 7474 TSSOP14 Dual D type positive edge triggered FLIP FLOP, preset and clear ABM3 ABM3 ABM3 Crystal Case Type: 5 x 3.2mm SMD AT24C16B AT24C16BSOIC8 SOIC08 AT91SAM7S256 AT91SAM7S256LQFP64 LQFP64 BAS40-04 BAS40-04 SOT23 Silicon Schottky Diodes...
  • Page 10 100n C-EUC0603 C0603 CAPACITOR, European symbol 100n C-EUC0603 C0603 CAPACITOR, European symbol C-EUC0603 C0603 CAPACITOR, European symbol C-EUC0603 C0603 CAPACITOR, European symbol 100n C-EUC0603 C0603 CAPACITOR, European symbol 100n C-EUC0603 C0603 CAPACITOR, European symbol C-EUC0603 C0603 CAPACITOR, European symbol 100n C-EUC0603 C0603 CAPACITOR, European symbol...
  • Page 11 CPOL-EUSMCB SMC_B POLARIZED CAPACITOR, European symbol CPOL-EUSMCB SMC_B POLARIZED CAPACITOR, European symbol CPOL-EUSMCB SMC_B POLARIZED CAPACITOR, European symbol CPOL-EUSMCB SMC_B POLARIZED CAPACITOR, European symbol CPOL-EUSMCB SMC_B POLARIZED CAPACITOR, European symbol CPOL-EUSMCB SMC_B POLARIZED CAPACITOR, European symbol CPOL-EUSMCB SMC_B POLARIZED CAPACITOR, European symbol 220u CPOL-EUSMCC SMC_C...
  • Page 12 6.2k R-EU_R0603 R0603 RESISTOR, European symbol R-EU_R0603 R0603 RESISTOR, European symbol R-EU_R0603 R0603 RESISTOR, European symbol R-EU_R0603 R0603 RESISTOR, European symbol R-EU_R0603 R0603 RESISTOR, European symbol R-EU_R0603 R0603 RESISTOR, European symbol R-EU_R0603 R0603 RESISTOR, European symbol R-EU_R0603 R0603 RESISTOR, European symbol R-EU_R0603 R0603 RESISTOR, European symbol...
  • Page 13 R-EU_R0603 R0603 RESISTOR, European symbol R-EU_R0603 R0603 RESISTOR, European symbol 0.5A SF-0603F F0603 SWITCH TACT_SWITCH TACT_SWITCH TPS63030 S-PDSO-N10 2,5-mm × 2,5-mm QFN-10 TS5A3159A TS5A3159A SOT23-6 TS5A3159A TS5A3159A SOT23-6 TS5A3159A TS5A3159A SOT23-6 4.7uH VLF3012AT-4R7MR74 COILFP 2.8x2.6x1mm SMT Power Inductors ID: 1530 / ver. 205...

  • Page 14: Hw Assembly Of Audiometer And Headset

    7. HW Assembly of Audiometer and headset Assembly instructions for DA7 audiometers (Oscilla USB-310, 330, 350B, 350BS, 350SP). The order of operations is free, as long as assembly takes place cf. collar specified in this procedure. There is a Peltor headset (Item no.: 44173) and a cable of the type "Y cable for USB"...
  • Page 15 After this, plug pins (item no.: 44169) are soldered onto the de-insulated ends. The is a "USB Integrated" cabinet (Item no. 44710), Cables from the headset are then inserted into the two rear holes, and a USB cable (Item no.: 44237) is inserted into the front hole.
  • Page 16 The USB cable's wire is soldered on the top side of the print. Installation of USB cable wires from the outer side of the PCB towards the middle as shown in the figure: Red, white, green, black, screen. The Y cable is stripped at the end that does not fit into the headset, tinned, crimp flex applied and soldered to the underside of the printed circuit board, as shown in the pictures.
  • Page 17 The 2 pieces of flex (1.6/0.8mm) length 15 mm, are pulled over the screen as shown and crimped. cable ties must be installed The cables are then mounted on the printed circuit board, as shown in the picture. The small black cable ties [0.6”/71.1mm] (Item no.: 44714) are mounted on all three wires as relief.
  • Page 18 7. Only for USB350SP A piece of black wire (Item no.: 67014) of 9 cm is cut off, on which the insulation is stripped at both ends. The wires are stripped so that they cannot short-circuit when mounting on the response microphone (Item no: 43097) and in the printed circuit board.
  • Page 19 8. Only FOR USB350SP The other end of the cable with the microphone is soldered on the printed circuit board, on the "MIC" solder islands. ID: 1530 / ver. 205...
  • Page 20 9. Assembly of the main unit Now the printed circuit board is placed in the cabinet and fixed with two small chip screws. The top and bottom of the cabinet click together. The top of the cabinet is fastened with a screw on the back of the cabinet.
  • Page 21 10. Assembly of the headset Sound-absorbing foam is now placed at the bottom of the "Peltor" cups, and the wires are connected to the telephones. The phones are placed in the cups and the ear pads are put on. 11. After calibration. Follow the instructions from the calibration manual from the USB calibration software.

  • Page 22: Technical Specifications

    8. Technical specifications ID: 1530 / ver. 205...
  • Page 23 ID: 1530 / ver. 205...
  • Page 24 ID: 1530 / ver. 205...
  • Page 25 ID: 1530 / ver. 205...

  • Page 26: Warning And Safety Notices

    Warning and safety notices • − − ID: 1530 / ver. 205...

  • Page 27: Symbols

    Symbols − ID: 1530 / ver. 205...
  • Page 28 − ID: 1530 / ver. 205...

  • Page 29: Responsibility Of The Manufacturer

    • • • Responsibility of the manufacturer − − − ID: 1530 / ver. 205...

This manual is also suitable for:

Usb330Usb350

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