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Tektronix ASG 100 Serviceanleitung
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Tektronix ASG 100 Serviceanleitung

Tektronix ASG 100 Serviceanleitung

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Service Manual
ASG 100
Audio Signal Generator
070-8546-03
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.

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Verwandte Anleitungen für Tektronix ASG 100

Inhaltszusammenfassung für Tektronix ASG 100

  • Seite 1 Service Manual ASG 100 Audio Signal Generator 070-8546-03 Warning The servicing instructions are for use by qualified personnel only. To avoid personal injury, do not perform any servicing unless you are qualified to do so. Refer to all safety summaries prior to...
  • Seite 3 WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.
  • Seite 7 Check Amplitude Flatness (+0.05/0.2 dB, 10 Hz to 20 kHz) ....4–3 Check Channel-to-Channel Level Difference ( 0.2 dB at +14 dBu) ... . .4–4 Check Total Harmonic Distortion + Noise (<...
  • Seite 8 Digital-to-Analog Converter (Diagrams 3 and 3a) ........5-5...
  • Seite 17 RTS and CTS are not used in the ASG 100. Pins 4, 6, and 9 of the connector are not to be connected to the terminal interconnec- tion cable. Those pins are used for contact closure remote control. 0.2 dB, 10 Hz to 20 kHz* Typ.
  • Seite 18 < 0.01% (–80 dB), 20 Hz to 18 kHz*; < 0.005% at 1 kHz at full output, measured < 0.0.25% (–72 dB), 18 kHz to 20 kHz*; over a 22 KHz bandwidth (see typical curve in Figure 1–1). This typical specification <...
  • Seite 19 0.008 %THD + Noise (measured over 22 kHz bandwidth) Noise limited +4.6 +14.6 –5.4 below –5.4 dB...
  • Seite 21 Introduction & Specifications Table : Certifications and compliances Category Standards or description EC Declaration of Conformity – Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility. Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Union: EN 50081-1 Emissions: EN 55022 Class B Radiated and Conducted Emissions...
  • Seite 22 Introduction & Specifications Table : Certifications and compliances (cont.) Category Standards or description Pollution Degree 1 No pollution or only dry, nonconductive pollution occurs. Products in this category are generally encapsulated, hermetically sealed, or located in clean rooms. Pollution Degree 2 Normally only dry, nonconductive pollution occurs.
  • Seite 57 CHECK AMPLITUDE FLATNESS (+0.05/–0.2 DB, 10 HZ TO 20 KHZ)
  • Seite 58 d. Check that the amplitude is flat within +0.05/–0.2 dB at each test frequency with respect to the 1000 Hz 14 dBu amplitude noted in part a. The amplitude accuracy specification permits the 14 dBu amplitude at 1000 Hz to be 3.7938 to 3.9726 V, and the flatness has to be calculated using the measured voltage to check the actual flatness over frequency.
  • Seite 59 Check Total Harmonic Distortion + Noise (< 0.015%, 20 Hz to 19 kHz; < 0.056%, > 19 kHz to 20 kHz) d. Check for a THD + N of less than 0.015% for each of the frequencies listed in Table 4–4. (Other frequencies may be used if considered necessary.
  • Seite 60 Select the AUDIO BAND PASS filter.
  • Seite 71 (Diagrams 3 and 3a) The feedback circuit that sets the loop gain of the DAC and the current-to-voltage converter is formed by resistors R24 (an adjustable potentiometer) and R23.
  • Seite 72 The signal voltage from U20 is applied to FL3, an 11-pole, low-pass filter with a 23 kHz cutoff. The upper output signal frequency is 20 kHz, but a 23 kHz low-pass filter is used to move the ripple effect of the filter above 20 kHz.
  • Seite 80 B031760 671–1758–08 B031761 B039999 CIRCUIT BD ASSY:MAIN 80009 671–1758–08 671–1758–09 B040000 CIRCUIT BD ASSY:MAIN 80009 671–1758–09 307–0793–00...
  • Seite 81 B031760 671–1758–08 B031761 B039999 CIRCUIT BD ASSY:MAIN 80009 671–1758–08 671–1758–09 B040000 CIRCUIT BD ASSY:MAIN 80009 671–1758–09...
  • Seite 84 A2C137 281–0775–02 CAP,FXD,CER:MLC;0.1UF,20%,50V,X7R,0.265 04222 SA205C104MAA 0.100;AXIAL,T&R A2C138 281–0775–02 671–1758–04 CAP,FXD,CER:MLC;0.1UF,20%,50V,X7R,0.265 04222 SA205C104MAA 0.100;AXIAL,T&R...
  • Seite 85 A2FL2 119–4080–00 671–1758–00 671–1758–08 FILTER,LOWPASS 80009 119–4080–00 A2FL2 671–4081–00 671–1758–09 FILTER,LOWPASS 80009 671–4081–00 A2FL3 119–4080–00 671–1758–00 671–1758–08 FILTER,LOWPASS 80009 119–4080–00 A2FL3 671–4081–00 671–1758–09 FILTER,LOWPASS 80009 671–4081–00...
  • Seite 87 671–1758–00 671–1758–08 671–1758–00 671–1758–08 A2R20 322–3222–07 671–1758–00 671–1758–08 RES,FXD,FILM:2K OHM,0.1%,0.2W TC=T9 80009 322–3222–07 A2R20 322–3176–00 671–1758–09 RES,FXD,FILM:665 OHM,0.1%,0.2W TC=T0MI 80009 322–3176–00 A2R21 322–3222–07 RES,FXD,FILM:2K OHM,0.1%,0.2W TC=T9 80009 322–3222–07 A2R22 322–3222–07 671–1758–00 671–1758–08 RES,FXD,FILM:2K OHM,0.1%,0.2W TC=T9 80009 322–3222–07 A2R22 322–3176–00 671–1758–09 RES,FXD,FILM:665 OHM,0.1%,0.2W TC=T0MI 80009 322–3176–00...
  • Seite 91 671–1758–00 671–1758–07 A2U1 156–6157–01 671–1758–08 DSP56001 ON ADAPTER...
  • Seite 94 C135 283–0067–00 B040000 CAP,FXD,CER D1:0.001UF,10%,200V 51046 283–0067–00 C136 283–0067–00 B010100 B010409 CAP,FXD,CER D1:0.001UF,10%,200V 51046 283–0067–00 C136 283–0067–00 B040000 CAP,FXD,CER D1:0.001UF,10%,200V 51046 283–0067–00 C200 283–0067–00 B010410 CAP,FXD,CER D1:0.001UF,10%,200V 51046 283–0067–00 E200 276–0647–00 B010410 B039999 CORE,EM:TOROID,FERRITE 78488 57–0126...
  • Seite 99 AGC Right D/A Low-Pass Attenuator Out right Converter Filter <3>DIGITAL TO Audio <6>MICROPHONE <4> CH 1 AND CH 2 ANALOG CONVERTER In Right PREAMP GAIN/ATTENUATOR REAR PANEL SIGNAL LINE CONTROL LINE SCHEMATIC DIAGRAM ASG 100 Block Diagram NUMBER <n>...
  • Seite 100 ASG 100 A2 MAIN BOARD Static Sensitive Devices See Maintenance Section 671-1758-04 & UP Schematic Diagram <1> Component Locator Chart Main Board, Assembly A2. Partial Assembly A2 also shown on Diagrams 2, 3, 4, 5, and 6. C115 R177 U40E...
  • Seite 101 FRONT PANEL PROCESSOR SWITCH FRONT PANEL INTERFACE BATTERY BACKUP RS232 PORT EPROM...
  • Seite 102 ASG 100 A2 MAIN BOARD Back of board. Static Sensitive Devices 671-1758-00 – 03 See Maintenance Section Schematic Diagram <2> Component Locator Chart Assembly A2. Partial Assembly A2 also shown on Diagrams 1, 3, 4, 5, and 6. J31B R159...

  • Seite 103: Digital Signal Processor

    EPROM CONTROL REGISTER CODEC BATTERY BACKUP ASG 100 DIGITAL SIGNAL PROCESSOR...
  • Seite 104 – ASG 100 Schematic Diagram <3> Component Locator Chart Main Board, Assembly A2. Partial Assembly A2 also shown on Dia- grams 1, 2, 4, 5, and 6. R66 * R160 C116 R161 C117 C118 C119 C120 U13A C121 U13B U66A...
  • Seite 105 LEFT D/A CONVERTER LEFT LOW PASS FILTER DATA FORMATTER/SYNCHRONIZER RIGHT D/A CONVERTER RIGHT LOW PASS FILTER ASG 100 DIGITAL TO ANALOG CONVERTER...
  • Seite 106 ASG 100 Schematic Diagram <3a> Component Locator Chart Main Board, Assembly A2. Partial Assembly A2 also shown on Dia- grams 1, 2, 4, 5, and 6. R66 * C116 R160 R161 C117 C118 C119 C120 C121 U13A U13B U66A U66B *See parts list for earlier values and serial number ranges.
  • Seite 107 LEFT D/A CONVERTER LEFT LOW PASS FILTER DATA FORMATTER/SYNCHRONIZER RIGHT D/A CONVERTER RIGHT LOW PASS FILTER ASG 100 DIGITAL TO ANALOG CONVERTER...
  • Seite 108 ASG 100 Schematic Diagram <4> Component Locator Chart Main Board, Assembly A2. Partial Assembly A2 also shown on Diagrams 1, 2, 3, 5, and 6. FL11 * R167A R167B R167C R167D R167E R167F R167G R167H C126 * R168 C127 *...
  • Seite 109 LEFT STEP LEFT OUTPUT BUFFER ATTENUATOR RIGHT STEP RIGHT OUTPUT BUFFER ATTENUATOR CHANNEL 1 AND CHANNEL 2 GAIN / ATTENUATOR ASG 100...
  • Seite 110 ASG 100 Schematic Diagram <5> Component Locator Chart Main Board, Assembly A2. Partial Assembly A2 also shown on Dia- grams 1, 2, 3, 4, and 6. R119 R120 R121 R122 R123 R124 R126 R127 R128 R129 R130 C100 C101 R132...
  • Seite 111 HEADPHONE AMPLIFIER ASG 100 HEADPHONE AMPLIFIER...
  • Seite 112 ASG 100 Schematic Diagram <6> Component Locator Chart Main Board, Assembly A2. Partial Assembly A2 also shown on Dia- grams 1, 2, 3, 4, and 5. C102 C105 C106 C108 C112 C113 C124 C125 C134 C137 C142 * R134 R135...
  • Seite 113 PREAMP AND AGC POWER DISTRIBUTION AND DECOUPLING ASG 100 MICROPHONE PREAMP AND POWER DISTRIBUTION...
  • Seite 114 ASG 100 A1 FRONT PANEL BOARD Static Sensitive Devices See Maintenance Section Schematic Diagram <7> Component Locator Chart Front Panel Board, Assembly A1 *See parts list for earlier values and serial number ranges.

  • Seite 115: Front Panel

    VOLUME CONTROL MICROPHONE LEDS DISPLAY BUTTONS ASG 100 FRONT PANEL...
  • Seite 116 ASG 100 Static Sensitive Devices See Maintenance Section A4 SERIAL FILTER BOARD Schematic Diagram <8> Component Locator Chart Serial Filter Board, Assembly A2A1 *See parts list for earlier values and serial number ranges.
  • Seite 117 ASG 100 SERIAL FILTER BOARD...
  • Seite 124 B010100 B032105 –23 211–0722–00 SCREW,MACHINE:6–32 X 0.250,PNH,STL,CDPL B032106 214–3903–01 SCREW,JACK:4–40 X 0.312 EXT THD, 4–40 INT THD, 0.188 HEX,STEEL,CAD PLATE B010100 B031903 –27 200–3869–01 B031904 B032105 COVER,BOTTOM,ALUMINUM,ASG100 80009 200–3869–01 –27 200–3869–02 B032106 COVER,BOTTOM,ALUMINUM,ASG100 80009 200–3869–02...
  • Seite 125 070–8152–0X 070–8152–0X 070–8546–0X 070–8546–0X...