Tektronix 11801C Oscyloskop
Producent:
Model:
11801C
Data:
0
Kategoria:
Grupa:
Opis:
Digital Sampling Oscilloscope

Informacja

The Tektronix 11801C is a high-resolution digital sampling Oscilloscope accommodating up to eight input channels through the dual-channel sampling heads. With the SD-24 TDR/Sampling Head, eight channels of singleended TDR or four channels of differential TDR are available as well. Features include the following: ■ sweep rates ranging from 5 ms/division to 1 ps/div ■ autoset to provide a suitably adjusted display for viewing and further manual adjustment ■ windows for viewing expanded sections of a trace ■ self-tests to assure continuous accuracy of waveform data and measurements ■ digital waveform storage and display ■ on-board measurement capabilities ■ menu-driven touch-screen operation ■ RS-232-C, GPIB, and PRINTER interfaces This section has two main sub sections:

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Instrukcja serwisowa
Typ ręczny:
Instrukcja serwisowa
Strony:
286
Rozmiar:
2.33 Mbytes (2442693 Bytes)
Język:
english
Rewizja:
Ręczny ID:
070-9972-02
Data:
Jakość:
Dokument elektroniczny, bez skanowania, bardzo dobrze czytelne.
Data przesłania:
2014 11 23
MD5:
eb5031e188be02a3ef10b98a041f19cc
Pobrane:
685

Informacja

Contacting Tektronix ... i General Safety Summary ... xvii Service Safety Summary ... xix Specifications Operating Information Sampling Head Installation and Removal ... 2-2 Power Information ... 2-4 Power Cord Information ... 2-5 Memory Backup Power ... 2-6 Operating Environment ... 2-6 Operating Temperature ... 2-6 Ventilation Requirements ... 2-6 Packaging for Shipment ... 2-7 Theory of Operation System Functional Overview ... 3-3 Acquisition System Block ... 3-3 Strobe Distribution Block ... 3-3 Time Base/Controller Block ... 3-3 Trigger Select Block ... 3-3 Executive Processor Block ... 3-4 Memory Management Unit Block ... 3-4 Waveform Memory Block ... 3-4 Front Panel Controls ... 3-5 I/O Block ... 3-5 Waveform Compressor and Display Control Block ... 3-5 Power Supply ... 3-6 Typical Waveform Processing Cycle ... 3-6 Block Diagram Descriptions ... 3-7 A1 M/F Strobe Drive Board ... 3-7 Data Buffers ... 3-7 Address Latch ... 3-7 Function Decoder ... 3-7 Internal Clock Rate Generator ... 3-7 Control Buffer ... 3-8 A3 M/F Power Connect Board ... 3-8 A4 Regulator Board ... 3-8 Voltage Fault Detect ... 3-8 A5 Time Base/Controller Board ... 3-9 Microprocessor ... 3-9 RAM/ROM Memory ... 3-9 Trigger ... 3-9 Time Base ... 3-11 Acquisition System Interface ... 3-11 Memory Management (MMU) Interface ... 3-11 A7 CRT Socket Board ... 3-12 Red, Green, and Blue Video Amplifiers ... 3-12 Red, Green, and Blue Adjustments ... 3-12 Convergence Adjustment ... 3-12 A8 CRT Driver Board ... 3-13 Horizontal Sweep ... 3-13 Vertical Sweep ... 3-13 High Voltage and Grid Voltage Generator ... 3-13 Degauss ... 3-14 Beam Current Limit ... 3-14 Grid Bias ... 3-14 A9, A10, and A11 Front Panel Boards ... 3-14 Touch Panel, Major Menu Keys, and Menu Status LEDs ... 3-14 A9 Touch Panel Assembly ... 3-14 A10 Front Panel Control Board ... 3-15 A11 Front Panel Button Board ... 3-15 A12 Rear Panel Assembly ... 3-15 GPIB Data and Address Bus ... 3-16 Standard RS-232-C Controller ... 3-16 Printer Port ... 3-17 A13 Mother Board ... 3-17 A14 Input/Output (I/O) Board ... 3-18 I/O Data Buffer ... 3-18 I/O Delayed Data Buffer ... 3-18 Timer Configuration ... 3-19 Real Time Clock ... 3-19 Serial Data Interface (SDI) ... 3-19 Tone Generator ... 3-19 Temp/Tone Readback Buffer ... 3-19 A15 Memory Management (MMU) Board ... 3-20 MMU IC ... 3-20 Waveform RAM ... 3-20 Display Interface ... 3-20 Time Base/Controller Interface ... 3-21 Executive Processor (EXP) Interface ... 3-21 Display IC ... 3-21 Microprocessor ... 3-21 Bit Map RAM ... 3-21 Waveform Display RAM ... 3-22 Video Digital-to-Analog Convertor (DAC) ... 3-22 A17 Executive Processor Board ... 3-22 Executive Processor (EXP) ... 3-22 Numeric Coprocessor ... 3-23 Bus Controller ... 3-23 Reset ... 3-23 Wait State ... 3-23 Interrupt Controllers ... 3-23 DMA Controller ... 3-23 A18 Memory Board ... 3-24 Address Latches ... 3-24 Address Decode and Memory Select ... 3-24 EPROMs, SRAM, and NVRAM ... 3-25 Memory Data Buffers ... 3-25 Wait State Generator ... 3-25 Wait State Diagnostics ... 3-25 Memory Configuration Readback ... 3-25 Battery Backup ... 3-25 A19 Strobe/TDR Buffer Board ... 3-26 Strobe Sense Select ... 3-26 Strobe Deskew ... 3-26 TDR Buffer and Level Shift ... 3-26 A20-23 Head Interconnect Boards ... 3-26 A26 M/F Acquisition Interconnect Board ... 3-27 A24/A27 & A25/A28 Acquisition System Boards ... 3-27 Programmable Gain Amplifiers ... 3-27 A/D Convertors ... 3-28 Measurement Hardware ... 3-28 Timing and Sampling Head Control ... 3-28 Shared RAM ... 3-29 Time Base/Controller Interface ... 3-29 Microprocessor ... 3-29 11801C Service Test Equipment ... 4-3 Test Record ... 4-6 Using These Procedures ... 4-11 Conventions in this Manual ... 4-11 Menu Selections and Measurement Techniques ... 4-11 User Manual ... 4-11 Performance Tests ... 4-13 Power-On Diagnostics ... 4-14 Setup to Invoke Power-On Diagnostics ... 4-14 Procedure to Invoke Power-On Diagnostics ... 4-14 Diagnostics ... 4-15 Self-Test Diagnostics ... 4-15 Power-On Diagnostics Complete ... 4-16 Sampling Heads ... 4-17 Setup to Calibrate a Sampling Head ... 4-17 Procedure to Calibrate a Sampling Head ... 4-17 Extended Diagnostics ... 4-19 Setup to Invoke Extended Diagnostics ... 4-19 Procedure to Invoke Extended Diagnostics ... 4-19 Vertical Reference Voltage ... 4-21 Specifications ... 4-21 Setup to Check Vertical Reference Voltage ... 4-21 Procedure to Check Vertical Reference Voltage ... 4-21 Horizontal Reference Clock ... 4-23 Specifications ... 4-23 Setup to Check Horizontal Reference Clock ... 4-23 Procedure to Check Horizontal Reference Clock ... 4-23 Vertical Accuracy ... 4-25 Setup to Check Vertical Gain ... 4-25 Procedure to Check Vertical Gain ... 4-25 Setup to Check Offset Accuracy ... 4-28 Procedure to Check Offset Accuracy ... 4-28 System Vertical RMS Noise ... 4-31 Setup to Examine Vertical RMS Noise ... 4-31 Procedure to Examine Vertical RMS Noise ... 4-31 Sweep Rate Accuracy ... 4-34 Setup to Examine Sweep Rate Accuracy ... 4-34 Procedure to Examine Sweep Rate Accuracy ... 4-34 Sweep Rate Accuracy 2 ns/div ... 4-35 Sweep Rate Accuracy 1 ns/div ... 4-36 Sweep Rate Accuracy 100 ps/div ... 4-36 Sweep Rate Accuracy 10 ps/div ... 4-36 Sweep Rate Accuracy 1 ps/div ... 4-37 Triggering, External Direct ... 4-39 Specifications ... 4-39 Setup to Check Triggering ... 4-39 Procedure to Check Triggering ... 4-39 Prescaler Triggering ... 4-41 Specifications ... 4-41 Setup to Check Prescaler Triggering ... 4-41 Procedure to Check Prescaler Triggering ... 4-41 Internal Clock ... 4-43 Measurement Limits ... 4-43 Setup to Examine Internal Clock ... 4-43 Procedure to Examine Internal Clock ... 4-43 Calibrator Output ... 4-45 Measurement Limits ... 4-45 Setup to Examine Calibrator Output ... 4-45 Procedure to Examine Calibrator ... 4-45 Adjustment Test Equipment ... 5-3 Using These Procedures ... 5-6 Conventions in this Manual ... 5-6 Menu Selections and Measurement Techniques ... 5-6 User Manual ... 5-6 Power Supply ... 5-7 Measurement Limits ... 5-7 Setup to Examine Voltage Supply ... 5-7 Procedure to Examine Voltage Supply ... 5-7 Setup to Examine/Adjust Voltage Reference ... 5-9 Procedure to Examine/Adjust Voltage Reference ... 5-9 Setup to Examine/Adjust Regulator Reference ... 5-11 Procedure to Examine/Adjust Regulator Reference ... 5-11 Display ... 5-13 Measurement Limits ... 5-13 Setup to Examine/Adjust the Display ... 5-14 Procedure to Examine/Adjust the Display ... 5-14 Real Time Clock ... 5-20 Measurement Limits ... 5-20 Setup to Examine/Adjust Real Time Clock ... 5-20 Procedure to Examine/Adjust Real Time Clock ... 5-20 Preventive Maintenance ... 6-1 Removing the Cabinet Panels ... 6-1 Cleaning the Instrument ... 6-2 Exterior ... 6-2 CRT ... 6-2 Interior ... 6-3 Visual Inspection ... 6-3 Periodic Electrical Adjustment ... 6-3 Corrective Maintenance ... 6-5 Power supply Voltage Hazard ... 6-5 Ordering Parts ... 6-5 Static-Sensitive Device Classification ... 6-6 Removing and Replacing FRUs ... 6-8 Electrical Lock-on of the Front Panel ON/STANDBY Power Switch ... 6-13 Power supply Module Removal/Replacement ... 6-16 Fan Motor Removal/Replacement ... 6-19 Cathode Ray Tube (CRT) Removal/Replacement ... 6-20 Acquisition Unit Removal/Replacement ... 6-26 Battery Disposal and First Aid ... 6-27 Battery Disposal ... 6-27 Emergency and First Aid Information ... 6-28 FRU Board and Assembly Removal ... 6-29 A1 M/F Strobe Drive Board ... 6-31 A3 M/F Power Connect Board ... 6-32 A4 Regulator Board ... 6-34 A5 Time Base/Controller Board ... 6-35 A7 CRT Socket Board and A8 CRT Driver Board ... 6-37 A9 Touch Panel Assembly ... 6-40 A10 Front Panel Control Board ... 6-42 A11 Front Panel Button Board ... 6-44 A12 Rear Panel Assembly ... 6-45 A13 Mother Board ... 6-47 A14 Input/Output (I/O) Board ... 6-49 A15 Memory Management Unit (MMU) Board ... 6-51 A17 Executive Processor (EXP) Board ... 6-53 A18 Memory Board ... 6-55 A19 Strobe/TDR Buffer Board ... 6-57 A20-A23 Head Interconnect Boards ... 6-59 A26 M/F Acquisition Interconnect Board ... 6-61 A24/A27 Acquisition Analog Boards ... 6-63 A25/A28 Acquisition MPU Boards ... 6-64 FRU IC Removal ... 6-65 Serial Data Interface Integrated Circuits (“Slam-Pack” ICs) .. 6-65 Firmware Integrated Circuits (“Dual In-Line Package” ICs) .. 6-68 Firmware Upgrade Procedure ... 6-69 Cables and Connectors ... 6-75 Interconnecting Pins ... 6-75 Coaxial-type End-Lead Connectors (Peltolas & SMB) ... 6-75 Multi-Pin Connectors ... 6-75 Checks After FRU Replacement ... 6-77 Diagnostic Troubleshooting ... 6-79 Diagnostics Overview ... 6-79 Kernel Diagnostics ... 6-80 Self-Test/Extended Diagnostics ... 6-81 Extended Diagnostics Menu Structure ... 6-81 Extended Diagnostics Error Index Codes ... 6-81 Diagnostic Menus ... 6-84 Diagnostic Menu Hardcopy ... 6-85 Diagnostic Terminal Mode (RS-232-C) ... 6-86 System Mode (GPIB & RS-232-C) ... 6-87 Battery Testing ... 6-89 Clearing NVRAM ... 6-90 Field Replaceable Unit (FRU) Guide ... 6-91 FRU Name Abbreviations ... 6-92 Component and Module Name Abbreviations ... 6-93 Executive Subsystem Error Index Codes ... 6-94 Display Subsystem Error Index Codes ... 6-98 Time Base Processor Error Index Codes ... 6-100 Acquisition Processor Error Index Codes ... 6-102 Other Troubleshooting ... 6-103 Power Supply Module ... 6-103 Module Troubleshooting ... 6-103 A4 Regulator Board ... 6-103 CRT, A7 CRT Socket Board, or A8 CRT Driver Board ... 6-104 Module Troubleshooting ... 6-104 A13 Mother Board ... 6-104 Fuse Testing ... 6-105 Time Base Calibration Errors ... 6-108 Acquisition Calibration Errors ... 6-110 Options Instrument Options ... 7-1 Power Cord Information ... 7-2 11801C Service Electrical Parts ... 8-1 Diagrams Replaceable Parts List Replaceable Parts ... 10-1 Parts Ordering Information ... 10-1 Module Replacement ... 10-1 Firmware Replacement ... 10-1 Using the Replaceable Parts List ... 10-2 Item Names ... 10-2 Indentation System ... 10-2 Abbreviations ... 10-2

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