1.1 INTRODUCTION ...1-1 1.2 SAFETY PRECAUTIONS...1-1 1.3 CAUTION AND WARNING STATEMENTS...1-1 1.4 SYMBOLS ...1-1 2 CHARACTERISTICS 21 2.1 VERTICAL ...2-2 2.1.1 Channels...2-2 2.1.2 Deflection Modes (Analog Only)...2-2 2.1.3 Bandwidth ...2-3 2.1.4 Attenuator ...2-3 2.1.5 Input Characteristics...2-4 2.1.6 Coupling ...2-4 2.1.7 Dynamic Range...2-4 2.1.8 Position Range ...2-4 2.1.9 Trace Separation...2-4 2.1.10 Input Voltage Limits...2-5 2.1.11 Step Response ...2-5 2.1.12 Signal Delay ...2-6 2.1.13 Vertical Accuracies ...2-6 2.2 TIMEBASE...2-7 2.2.1 Timebase (modes) ...2-7 2.2.2 Timebase Settings (Analog Mode Only)...2-7 2.2.3 DTB Delay (Analog Mode Only) ...2-7 2.2.4 Timebase Settings (Digital Mode Only)...2-8 2.2.5 Timebase Delay (Digital Mode Only)...2-9 2.2.6 DTB Delay (Digital Mode Only)...2-9 2.2.7 Analog Timebase Accuracies...2-9 2.2.8 Delaytime Accuracy (Analog Mode) ...2-9 2.2.9 DTB Jitter In Starts (Analog Mode)...2-10 2.2.10 Timebase Accuraries (Digital Mode)...2-10 2.2.11 DTB Jitter In Starts (Digital Mode)...2-10 2.2.12 External Horizontal Deflection...2-10 2.2.13 Horizontal Display Accuracy...2-10 2.3 TRIGGERING...2-11 2.3.1 Source...2-11 2.3.2 Modes...2-11 2.3.3 TV Systems...2-11 2.3.4 Coupling ...2-11 2.3.5 Sensitivity ...2-12 2.3.6 Slope...2-13 2.3.7 Level ...2-13 2.3.8 Logic Triggering Timing (Digital Mode Only)...2-14 2.3.9 Trigger Accuracies ...2-14 2.4 EVENT Counter 2-15 2.5 HOLD-OFF...2-15 2.6 PROCESSING ...2-16 2.6.1 Preprocessing...2-16 2.6.2 Register Processing (Digital Mode)...2-16 2.7 TRACE MEASUREMENTS (DIGITAL MODE)...2-17 2.8 CURSORS...2-17 2.8.1 Cursor Control...2-17 2.8.2 Cursor Readouts...2-18 2.8.3 Cursor Accuracies ( Analog Mode)...2-18 2.8.4 Cursor Accuracies (Digital Mode)...2-18 2.9 DIGITAL ACQUISITION...2-19 2.9.1 Modes...2-19 2.9.2 Sample Rate...2-19 2.9.3 Multiplexed Channels ...2-19 2.9.4 Trace Memory...2-19 2.9.5 Acquisition Time ...2-20 2.9.6 Resolution...2-20 2.9.7 Registers...2-21 2.9.8 Register Manipulations ...2-21 2.9.9 Digital Acquisition Accuracies...2-21 2.10 FRONT PANEL MEMORY...2-21 2.11 BLANKING OR Z-AXIS (ONLY FOR ANALOG TRACE)...2-22 2.12 DISPLAY ...2-22 2.12.1 CRT...2-22 2.12.2 Modes...2-22 2.12.3 Vertical Display Manipulations (Digital Mode)...2-23 2.12.4 Horizontal Display Manipulations (Digital Mode)...2-23 2.13 EXTERNAL Interface 2-24 2.13.1 Calibrator 2-24 2.13.2 Standard external Interface 2-24 2.13.3 Optional external Interface 2-25 2.13.4 Printers and plotters support...2-25 2.13.5 Real Time Clock ...2-26 2.14 AUTO SET & CALIBRATION...2-26 2.14.1 Auto Set ...2-26 2.14.2 Calibration...2-26 2.15 Power Supply AND BATTERY BACKUP...2-26 2.15.1 Power Supply 2-26 2.15.2 Battery Backup ...2-27 2.16 MECHANICAL CHARACTERISTICS...2-27 2.17 ENVIRONMENTAL CHARACTERISTICS...2-28 2.17.1 General...2-28 2.17.2 Environmental...2-28 2.17.3 EMI ...2-29 2.18 SAFETY...2-30 2.19 Accessories 2-30 2.20 OPTIONS & OPTIONAL VERSIONS...2-30 2.20.1 Options Line cord ...2-30 2.20.2 Options digital versions...2-30 2.20.3 Options analog ...2-31 2.20.4 Specification optional outputs...2-31 2.20.5 Specification External trigger option ...2-31 2.20.6 Specification IEEE-OPTION ...2-32 2.20.7 Extended memory...2-33 3 DESCRIPTIONS 35 3.1 GENERAL DESCRIPTION...3-5 3.1.1 Introduction to Oscilloscope family...3-5 3.1.2 Introduction to descriptions...3-5 3.1.3 Explanation of signal names...3-6 3.1.4 Voltage values in the circuit diagrams...3-6 3.2 BLOCK DIAGRAM DESCRIPTION ...3-7 3.2.1 Introduction...3-7 3.2.2 Vertical channels...3-8 3.2.3 Triggering and time bases...3-9 3.2.4 Final Amplifier 3-10 3.2.5 Front unit and microprocessor...3-11 3.2.6 Power supply...3-11 3.2.7 Digitizer...3-12 4 PARTS ...4-1 4.1 UNITS...4-1 4.2 INTERCONNECTION CABLES...4-2 4.3 MECHANICAL PARTS...4-4 5 UNIT DESCRIPTIONS... 5.1-1 5.1 SIGNAL UNIT A1 ... 5.1-1 5.1.1 Description A1... 5.1-1 5.1.2 Signal name list... 5.1-14 5.1.3 Unit lay-outs ... 5.1-21 5.1.4 Location list Signal Unit A1 ... 5.1-25 5.1.5 Circuit diagrams ... 5.1-35 5.1.6 Parts list ... 5.1-61 5.2 FINAL XYZ Amplifier A2 ... 5.2-1 5.2.1 Description of A2-200 MHz version... 5.2-1 5.2.2 Signal name list A2-200 MHz version... 5.2-5 5.2.3 Unit lay-outs A2-200 MHz version... 5.2-7 5.2.4 Location list A2-200 MHz version ... 5.2-9 5.2.5 Circuit diagramsA2-200 MHz version ... 5.2-13 5.2.6 Parts list A2-200 MHz version... 5.2-19 5.2.7 Description of A2-100 MHz version... 5.2-35 5.2.8 Signal name list A2-100 MHz version... 5.2-39 5.2.9 Unit lay-outs A2-100 MHz version... 5.2-41 5.2.10 Location List A2-100 MHz version... 5.2-43 5.2.11 Circuit diagrams A2-100 MHz version... 5.2-47 5.2.12 Parts list A2-100 MHz version... 5.2-53 5.3 MICROPROCESSOR A3...5.3-1 5.3.1 Description A3...5.3-1 5.3.2 Signal name list A3...5.3-2 5.3.3 Location list...5.3-4 5.3.4 Unit lay-outs ...5.3-5 5.3.5 Circuit diagrams ...5.3-7 5.3.6 Parts list ...5.3-13 5.4 FRONT UNIT A4 ... 5.4-1 5.4.1 Description ...5.4-1 5.4.2 Signal name list A4...5.4-1 5.4.3 Key switches...5.4-2 5.4.4 Unit lay-outs ...5.4-5 5.4.5 Circuit diagrams ...5.4-7 5.4.6 Parts list ...5.4-9 5.5 CRT CONTROLS UNIT A5 ... 5.5-1 5.5.1 Description ...5.5-1 5.5.2 Unit Lay-outs...5.5-2 5.5.3 Circiuit diagram...5.5-3 5.5.4 Parts list ...5.5-4 5.6 Power Supply A6... 5.6-1 5.6.1 Description A6... 5.6-1 5.6.2 Signal name list A6... 5.6-5 5.6.3 Unit lay-outs ... 5.6-7 5.6.4 Circuit diagram ... 5.6-9 5.6.5 Parts list ... 5.6-13 5.7 RESERVED FOR FUTURE EXTENSIONS... 5.7-1 5.8 DIGITIZER A8 ... 5.8-1 5.8.1 Descriptions ... 5.8-1 5.8.2 Signal name list digitizer A8 ... 5.8-23 5.8.3 Unit lay-outs ... 5.8-29 5.8.4 Location list... 5.8-31 5.8.5 Circuit diagrams ... 5.8-37 5.8.6 Parst list ... 5.8-55 5.9 RESERVED FOR FUTURE EXTENSIONS... 5.9-1 5.10 CONNECTOR BOARD A10... 5.10-1 5.10.1 Unit lay-out ... 5.10-1 5.10.2 Circuit diagram ... 5.10-3 5.10.3 Parts list ... 5.10-5 5.11 FACTORY INSTALLED OPTIONS...5.11-1 5.11.1 IEEE-OPTION...5.11-1 5.11.2 AUXILIARY OUTPUTS OPTION...5.11-1 5.11.3 EXTERNAL TRIGGER OPTION...5.11-7 6 PERFORMANCE TEST...6 1 6.1 GENERAL INFORMATION ...6-1 6.2 RECOMMENDED TEST EQUIPMENT ...6-2 6.3 TEST PROCEDURE ...6-3 6.3.1 Preliminary settings...6-3 6.3.2 Power supply...6-3 6.3.3 Auto set...6-4 6.3.4 Orthogonality...6-5 6.3.5 Trace distortion ...6-6 6.3.6 Vertical deflection; deflection coefficients...6-6 6.3.7 Vertical deflection; variable gain control range (continuation of 4.3.6) ...6-8 6.3.8 Vertical deflection; input coupling (continuation of 4.3.7) ...6-8 6.3.9 Vertical cursor accuracy (continuation of 4.3.8.)...6-9 6.3.10 Vertical deflection; high-frequency response ...6-9 6.3.11 Vertical deflection; low-frequency response ...6-10 6.3.12 Vertical deflection; dynamic range at 15/25/50 MHz...6-11 6.3.13 Vertical deflection; dynamic range at 60/100/200 MHz (continuation of 4.3.12) 6-11 6.3.14 Vertical deflection; position range...6-12 6.3.15 Vertical deflection; crosstalk between channels at 60/100/200 MHz ...6-12 6.3.16 Vertical deflection; common mode rejection ratio at 1 MHz ...6-13 6.3.17 Vertical deflection; common mode rejection ratio at 50 MHz (continuation of 4.3.16)...6-14 6.3.18 Vertical deflection; LF linearity ...6-15 6.3.19 Vertical deflection; visual signal delay...6-15 6.3.20 Vertical deflection; base line instability...6-17 6.3.21 Delay difference between vertical channels ...6-17 6.3.22 Horizontal deflection; display modes and trace separation...6-19 6.3.23 Horizontal deflection; X deflection...6-20 6.3.24 Horizontal deflection; MAIN TB deflection coefficients ...6-21 6.3.25 Horizontal deflection; VARiable mode accuracy MAIN TB...6-22 6.3.26 Time cursor accuracy (continuation of 4.3.25) ...6-23 6.3.27 Horizontal deflection; DELAYED TIME BASE deflection coefficients...6-24 6.3.28 Horizontal deflection; delay time multiplier ...6-25 6.3.29 Horizontal deflection; delayed timebase jitter ...6-26 6.3.30 Horizontal deflection; X deflection coefficient via CH1 ...6-26 6.3.31 Horizontal deflection; X deflection coefficient via ’line’ ...6-27 6.3.32 Horizontal deflection; high frequency response ...6-28 6.3.33 Maximum phase shift between horizontal and vertical deflection...6-28 6.3.34 MAIN TB triggering PM3390A 3392A/3394A; trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT) ...6-30 6.3.35 MAIN TB triggering PM3370A 3380A/3382A/3384A; trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT)...6-31 6.3.36 MAIN TB/DEL’D TB triggering; trigger sensitivity TVL-TVF ...6-32 6.3.37 DEL’D TB triggering PM3390A 92A/94A; trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT) ...6-32 6.3.38 DEL’D TB triggering PM3370A 80A/82A/84A; trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT)...6-34 6.3.39 Trigger sensitivity in logic mode PM3392A 3394A ...6-35 6.3.40 Trigger sensitivity in logic mode PM3382A 3384A ...6-36 6.3.41 Z-MOD sensitivity ...6-37 6.3.42 Probe Adjust signal; frequency and output voltage...6-38 6.3.43 Auto range functions...6-39 7 CALIBRATION ADJUSTMENT PROCEDURE...7-1 7.1 INTRODUCTION ...7-1 7.2 DARK LEVEL OF CRT...7-1 7.3 TRACE ROTATION...7-2 7.4 HORIZONTAL (X) GAIN AND OFFSET (CRT)...7-2 7.5 TEXT STABILITY AND X-OFFSET (CRT)...7-2 7.6 VERTICAL (Y) GAIN AND OFFSET (CRT)...7-2 7.7 HORIZONTAL GAIN AND OFFSET (VECTOR)...7-3 7.8 VERTICAL GAIN AND OFFSET (VECTOR) ...7-3 7.9 ASTIGMATISM...7-3 7.10 AUTOCAL PROCEDURE...7-3 7.11 LF SQUARE-WAVE RESPONSE CH1...7-4 7.12 LF SQUARE-WAVE RESPONSE CH2 ...7-5 7.13 LF SQUARE-WAVE RESPONSE CH3 ...7-5 7.14 LF SQUARE-WAVE RESPONSE CH4 and EXT TRIG ...7-6 7.15 HF SQUARE-WAVE RESPONSE FINAL Y Amplifier 7-7 7.16 HF RESPONSE DSO MODE...7-8 7.17 TRIGGER DELAY ADJUSTMENT...7-9 7.18 SAVING THE CALIBRATION DATA...7-10 7.19 TESTING THE INSTRUMENT’S PERFORMANCE...7-10 8 CORRECTIVE MAINTENANCE PROCEDURES 8 1 8.1 DISMANTLING THE INSTRUMENT ...8-1 8.1.1 General information...8-1 8.1.2 Removing the cabinet and carrying handle...8-1 8.2 REPLACEMENTS ...8-1 8.2.1 Standard parts...8-2 8.2.2 Special parts...8-2 8.2.3 Transistors and Integrated Circuits...8-2 8.3 STATIC SENSITIVE COMPONENTS ...8-2 8.4 SOLDERING TECHNIQUES ...8-3 8.4.1 General soldering techniques...8-3 8.4.2 Soldering micro-miniature semi-conductors ...8-3 8.5 REMOVING THE UNITS, MECHANICAL PARTS AND CRT ...8-4 8.5.1 Removing the rotary knobs...8-4 8.5.2 Detachment of ribbon cables...8-4 8.5.3 Removal of signal unit A1 ...8-5 8.5.4 Removal of Final XYZ Amplifier unit A2...8-6 8.5.5 Removal of unit at socket of CRT...8-7 8.5.6 Removal of Cathode Ray Tube (CRT) ...8-7 8.5.7 Removal of microprocessor unit A3 ...8-7 8.5.8 Removal of the units in the front frame (A4, A5)...8-8 8.5.9 Removal of the Power Supply unit A6...8-8 8.5.10 Removal of digitizer unit A8...8-9 8.6 INSTRUMENT REPACKING ...8-9 8.7 TROUBLESHOOTING TECHNIQUES...8-9 8.8 TROUBLESHOOTING THE POWER SUPPLY...8-10 8.9 SPECIAL TOOLS...8-11 8.9.1 Extension board ...8-11 8.9.2 Flash-ROM loader program...8-11 8.10 RECALIBRATION AFTER REPAIR...8-11 8.11 TESTS BUILT INTO THE INSTRUMENT...8-12 8.11.1 Power-up test...8-12 8.11.2 Introduction to diagnostic tests...8-12 8.11.3 SELFTESTS...8-15 8.11.4 Repair tools...8-17 9 SAFETY INSPECTION AND TESTS AFTER REPAIR AND MAINTENANCE IN THE PRIMARY CIRCUIT...9-1 9.1 GENERAL DIRECTIONS...9-1 9.2 SAFETY COMPONENTS...9-1 9.3 CHECKING PROTECTIVE GROUND...9-1 9.4 CHECKING INSULATION RESISTANCE ...9-1 9.5 CHECKING LEAKAGE CURRENT ...9-1 9.6 VOLTAGE TEST ...9-1