Fluke CombiScope PM3370B User manual

I
PM3370B - PM3380B - PM3390B
PM3384B - PM3394B
Autoranging CombiScopeInstrument
Service Manual
4822 872 05372
3/1-Dec-00
Warning: These servicing instructions are for use by qualified personnel only. To reduce the risc
of electric shock do not perform any servicing other than that contained in the operating
instructions unless you are fully qualified to do so.
®
ST7352
9312
TRACE
INTENSITY
TEXT
INTENSITY
TRACE
ROTATION
FOCUS
POWER ON
OFF
AUTO SET
STATUS
CAL SETUPS UTILITY
TEXT OFF
Probe Adjust
600mV
2kHz
POS
TRIG1
POS
ALT/CHOP
TRIG2
POS
TRIG3
POS
TRIG4
AMPLmV
V
VAR
AUTO
RANGE
ON
CH1+CH2
AC DC
GND
AMPLmV
V
VAR
AUTO
RANGE
ON
INV
AC DC
GND
mV
V
VAR
AUTO
RANGE
AMPL
ON AC DC
GND
CH3+CH4
mV
V
VAR
mV
V
VAR
mV
V
VAR
AMPL AUTO
RANGE
ON AC DC
GND
INV
ALL INPUTS MAX 5Vrms at 50Ω/MAX 400Vpk at 1MΩ
LOCAL
GRATICULE
ILLUMINATION
1234
1MΩ25pF
1MΩ25pF
1MΩ25pF
1MΩ25pF
CURSORS
TRACK
DTB TIME/DIV
sns
∆
DELAY
HOLD OFF
TRIGGER
POSITION
VAR
sns
TIME/DIV
TRIGGER
RUN/STOP
TB MODE
MAGNIFY
SINGLE_ARM’D
XPOS
TRIGGER
LEVEL
AUTO
RANGE
ANALOG ACQUIRE SAVE RECALL MEASURE MATH DISPLAY HARD COPY
VERT MENU
DELAYED TIME BASE

II
IMPORTANT
In correspondence concerning this instrument please give the model number and serial number as located on
the type plate on the rear of the instrument.
For your reference:
Model number: PM 33XXB/YY
Serial number: DM .
Note: The design of this instrument is subject to continuous development and improvement. Consequently,
this instrument may incorporate minor changes in detail from the information provided in this manual.
Copyright 1997, 1998, 2000 Fluke Corporation
All rights reserved. No part of this publication may be reproduced by any means or in any form without written
permission of the copyright owner.
Printed in The Netherlands

CONTENTS III
TABLE OF CONTENTS Page
1 SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.2.10 Timebase Accuraries (Digital Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.3.5 Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
2.3.6 Slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
2.3.7 Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.3.8 Logic Triggering Timing (Digital Mode Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.3.9 Trigger Accuracies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
2.4 EVENT COUNTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

IV CONTENTS
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2.9.5 Acquisition Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
2.9.6 Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
2.9.7 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
2.9.8 Register Manipulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.9.9 Digital Acquisition Accuracies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.10 FRONT PANEL MEMORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.11 BLANKING OR Z-AXIS (ONLY FOR ANALOG TRACE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.12 DISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
2.12.1 CRT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
2.12.2 Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
2.12.3 Vertical Display Manipulations (Digital Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
2.12.4 Horizontal Display Manipulations (Digital Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
2.13 EXTERNAL INTERFACES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
2.13.1 Calibrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
2.13.2 Standard external interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
2.13.3 Optional external interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
2.13.4 Printers and plotters support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
2.15.1 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
2.15.2 Battery Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
2.16 MECHANICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

CONTENTS V
2.19 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.20 OPTIONS & OPTIONAL VERSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.20.1 Options Line cord. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.20.2 Options digital versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.20.3 Options analog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
2.20.4 Specification optional outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
2.20.5 Specification External trigger option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
2.20.6 Specification IEEE-OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
3 DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
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 amplifiers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-59
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 diagrams A2-200 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

VI CONTENTS
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 diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 Parts 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 diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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

CONTENTS VII
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 Preliminar3y 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6.3.7 Vertical deflection; variable gain control range (continuation of 6.3.6) . . . . . . . . . . . . 6-8
6.3.8 Vertical deflection; input coupling (continuation of 6.3.7). . . . . . . . . . . . . . . . . . . . . . . 6-8
6.3.9 Vertical cursor accuracy (continuation of 6.3.8.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 6.3.12) . . . . 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 6.3.16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 6.3.25). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 PM3390B/3394B;
trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT) . . . . . . . . . . . . . . . . . . . . . . . 6-30
6.3.35 MAIN TB triggering PM3370B/3380B/3384B;
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 PM3390B/94B;
trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT) . . . . . . . . . . . . . . . . . . . . . . . 6-32
6.3.38 DEL’D TB triggering PM3370B/80B/84B;
trigger sensitivity via CH1, CH2, CH3 and CH4 (EXT). . . . . . . . . . . . . . . . . . . . . . . . 6-34
6.3.39 Trigger sensitivity in logic mode PM3394B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-35
6.3.40 Trigger sensitivity in logic mode PM3384B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
6.3.44 Testing the optional auxiliary outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40

VIII CONTENTS
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

CONTENTS IX
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

XCONTENTS
DECLARATION OF CONFORMITY
for
Autoranging CombiScopeInstrument
PM3370B, PM3380B, PM3390B
PM3384B, PM3394B
Manufacturer
Fluke Industrial B.V.
Lelyweg 1
7602 EA Almelo
The Netherlands
Statement of Conformity
Based on test results using appropriate standards, the product is in conformity with
Electromagnetic Compatibility Directive 89/336/EEC
Low Voltage Directive 73/23/EEC
Sample tests
Standards used:
IEC 348 (1978)
Safety Requirements for Electronic Measuring Apparatus
EN 50081-1 (1992)
Electromagnetic Compatibility. Generic Emission Standard:
EN55022 and EN60555-2
EN 50082-1 (1992)
Electromagnetic Compatibility. Generic Immunity Standard:
IEC801 -2, -3, -4, -5
The tests have been performed in a typical configuration.
This Conformity is indicated by the symbol , i.e. "Conformité européenne".
®

SAFETY INSTRUCTIONS 1 - 1
1 SAFETY INSTRUCTIONS
Read these pages carefully before installation and use of the instrument.
1.1 INTRODUCTION
The following paragraphs contain information, cautions and warnings which must be followed to
ensure safe operation and to keep the instrument in a safe condition.
WARNING: Servicing described in this manual is to be done only by qualified service
personnel. To avoid electric shock, do not service the instrument unless you are
qualified to do so.
1.2 SAFETY PRECAUTIONS
For the correct and safe use of this instrument it is essential that both operating and servicing
personnel follow generally accepted safety procedures in addition to the safety precautions specified
in this manual.
Specific warning and caution statements, where they apply, will be found throughout the manual.
Where necessary, the warning and caution statements and/or symbols are marked on the apparatus.
1.3 CAUTION AND WARNING STATEMENTS
CAUTION: Is used to indicate correct operating or maintentance procedures in order to
prevent damage to or destruction of the equipment or other property.
WARNING: Calls attention to a potential danger that requires correct procedures or
practices in order to prevent personal injury.
1.4 SYMBOLS
Live part (black/yellow)
High voltage terminal ≥1000 V (red)
Attention refer to the manual:
This symbol is to indicate that information about usage of a feature is contained in
the manual.
Protective ground terminal (black)
Static sensitive components (black/yellow)

1 - 2 SAFETY INSTRUCTIONS
1.5 IMPAIRED SAFETY-PROTECTION
Whenever it is likely that safety has been impaired, the instrument must be turned off and
disconnected from line power. The matter should then be referred to qualified technicians. Safety
protection is likely to be impaired if, for example, the instrument fails to perform the intended
measurements or shows visible damage.
1.6 GENERAL SAFETY INFORMATION
WARNING: Removing the instrument cover or removing parts, except those to which
access can be gained by hand, is likely to expose live parts and accessible
terminals which can be dangerous to live.
The instrument shall be disconnected from all voltage sources before it is opened.
Capacitors inside the instrument can hold their charge even if the instrument has been separated
from all voltage sources.
WARNING: Any interruption of the protective ground conductor inside or outside the
instrument, or disconnection of the protective ground terminal, is likely to make
the instrument dangerous. Intentional interruption is prohibited.
Components which are important for the safety of the instrument may only be replaced by
components obtained through your local FLUKE organisation. (See also section 9).
After repair and maintenance in the primary circuit, safety inspection and tests, as mentioned in
section 9 have to be performed.

CHARACTERISTICS 2 - 1
2 CHARACTERISTICS
A. Performance Characteristics
- Properties expressed in numerical values with tolerances, ranges, or limits stated, are
guaranteed by the manufacturer.
- Properties expressed in numerical values without tolerances, ranges, or limits stated, represent
the characteristics of an average instrument.
- This specification is valid if the temperature has not changed more than + or - 5 °C since the last
AUTO CAL, the probe is of the same type as delivered with the instrument, and if the average
factor is 8.
- For definitions of terms, reference is made to IEC Publication 351-1, 359.
B. Safety Characteristics
This instrument has been designed and tested in accordance with IEC Publication 348, Safety
Requirements for Electronic Measuring Apparatus, and has been supplied in a safe condition. This
manual contains information and warnings which must be followed by the user to ensure safe
operation and to keep the instrument in safe condition. The instrument has been designed for indoor
use. It may occasionally be subjected to temperatures between +5 °C and 10 °C without degradation
of its safety.
C. General Characteristics
•Overall dimensions:
•Height (without feet) : 139 mm ( 5.5 in)
•Width (without handle) : 341 mm (13.5 in)
•Length (without handle and front cover): 481 mm (19 in)
Weight 9.5 kg (19.7 lb)
Operating positions:
a) Horizontally on bottom feet
b) Vertically on rear feet
c) On the carrying handle in three sloping positions
Note: All items that refer specifically to only one mode (analog or digital) are identified in the
leftmost column with an ’A’ or a ’D’.
ST7354
9312
TRACE
INTENSITY
TEXT
INTENSITY
TRACE
ROTATION
FOCUS
POWER ON
OFF
AUTO SET
STATUS
CAL SETUPS UTILITY
TEXT OFF
Probe Adjust
600mV
2kHz
POS
TRIG1
POS
ALT/CHOP
TRIG2
POS
TRIG3
POS
TRIG4
AMPLmV
V
VAR
AUTO
RANGE
ON
CH1+CH2
AC DC
GND
AMPLmV
V
VAR
AUTO
RANGE
ON
INV
AC DC
GND
mV
V
VAR
AUTO
RANGE
AMPL
ON AC DC
GND
CH3+CH4
mV
V
VAR
mV
V
VAR
mV
V
VAR
AMPL AUTO
RANGE
ON AC DC
GND
INV
ALL INPUTS MAX 5Vrms at 50Ω/MAX 400Vpk at 1MΩ
LOCAL
GRATICULE
ILLUMINATION
1234
1MΩ25pF
1MΩ25pF
1MΩ25pF
1MΩ25pF
CURSORS
TRACK
DTB TIME/DIV
sns
∆
DELAY
HOLD OFF
TRIGGER
POSITION
VAR
sns
TIME/DIV
TB MODE
RUN/STOP
TB MODE
MAGNIFY
SINGLE_ARM’D
XPOS
TRIGGER
LEVEL
AUTO
RANGE
ANALOG ACQUIRE SAVE RECALL MEASURE MATH DISPLAY HARD COPY
VERT MENU
DELAYED TIME BASE
481 mm
341 mm
139 mm
Figure 2.1 Dimensions

2 - 2 CHARACTERISTICS
CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS
2.1 VERTICAL
2.1.1 Channels
CHANNELS CH1; CH2; Form a channel set
CH3; CH4 Form a channel set
See Note 1
Note 1: CH1 and CH2 for PM3370B, PM3380B and PM3390B.
2.1.2 Deflection Modes (Analog Only)
MODES CH1, CH2, CH3, CH4 See Note 1
CH2 and CH4 can be
inverted to allow
-CH2 or -CH4
CH1 + CH2 CH2 can be inverted to allow
CH1 - CH2
CH3 + CH4 CH4 can be inverted to allow
CH3 - CH4
Automode:
Auto attenuator CH1, CH2 All models
CH3, CH4 PM3384B/94B
Windows ON See Note 2
CH1, CH2 All models
CH3, CH4 PM3384B/94B
Alternate
Chopped
Chopped mode:
Chopped freq. 1 MHz
Note 1: CH1 and CH2 for PM3370B, PM3380B and PM3390B.
Note 2: If more than one channel ON.

CHARACTERISTICS 2 - 3
CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS
2.1.3 Bandwidth
FREQUENCY RESPONSE At BNC
Lower transition point of bandwidth
input coupling in AC pos <10 Hz
PM3394B/90B
Upper transition point of bandwidth
(Ambient 5 to 40 °C) >200 MHz See Note 1
(Ambient 0 to 50 °C) >175 MHz See Note 1
PM3384B/80B
Upper transition point of bandwidth
(Ambient 5 to 40 °C) >100 MHz With external 50Ω
(Ambient 0 to 50 °C) >90 MHz With external 50Ω
PM3370B
Upper transition point of bandwidth
(Ambient 5 to 40 °C) >60 MHz With external 50Ω
(Ambient 0 to 50 °C) >55 MHz With external 50Ω
BANDWIDTH LIMITER
Upper transition
point of bandwidth 20 MHz
Note 1: PM3394B CH1 through CH4 in 50Ωposition at BNC.
PM3390B CH1 and CH2 in 50Ωposition at BNC.
2.1.4 Attenuator
PM3394B/PM3384B
CH1 to CH4 steps 2 mV/div to 5V/div In 1-2-5 sequence
PM3390B/PM3380B/PM3370B
CH1 and CH2 steps 2 mV/div to 5V/div In 1-2-5 sequence
EXT TRIG steps 0.1V/div and 1V/div
Variable gain mode 2 mV/div to Continuously
12.5V/div variable
Auto Attenuator 2<div<6.4 1-2-5 steps precision
(min. 50 mV/div)
Auto Attenuator 1<div<3.2 1-2-5 steps precision
(Windows ON) (min. 50 mV/div)

2 - 4 CHARACTERISTICS
CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS
2.1.5 Input Characteristics
INPUT CONNECTOR BNC See Note 1
INPUT IMPEDANCE Measured at freq.
(in 1 MΩpos.) <1MHz
R parallel-value 1 MΩ
- tolerance ±1 %
C parallel-value 25 pF
- tolerance ±2 pF
INPUT INPEDANCE PM3390B on CH1 and CH2
(in 50Ωpos.) PM3394B all channels
R parallel value 50Ω
- tolerance ±1 %
VSWR (typical) 1.5:1 See Note 2
Note 1: BNC with Probe Readout pin which causes the instrument to change V/div indication, input
impedance, and attenuator setting according to the probe (when equiped with a probe
indicator).
Note 2: Measured up to 200 MHz input frequency; in dc and ac coupling of input.
2.1.6 Coupling
COUPLING dc, ac, ground See Note 1
Note 1: In GND position: channel disconnected from input, and connected to ground, BNC open
(when not in 50Ωposition). The GND coupling is available for all channels except
EXTTRIG.
2.1.7 Dynamic Range
PM3390B/PM3394B
Up to 50 MHz ±12 div Symmetrical
Up to 200 MHz ±4 div Symmetrical
PM3380B/PM3384B
Up to 25 MHz ±12 div Symmetrical
Up to 100 MHz ±4 div Symmetrical
PM3370B
Up to 15 MHz ±12 div Symmetrical
Up to 60 MHz ±4 div Symmetrical
2.1.8 Position Range
POSITION RANGE + or - ≥8 div Symmetrical
2.1.9 Trace Separation
TRACE SEPARATION MTB and DTB
Min. range + or - ≥4 div MTB fixed, DTB shifts

CHARACTERISTICS 2 - 5
CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS
2.1.10 Input Voltage Limits
INPUT VOLTAGE LIMITS See Note 1
In high Z position ±400V See Note 2
(dc + ac peak)
In 50Ωposition
dc ±5V
ac rms 5V See Note 3
ac peak ±50V See Note 3
Note 1: The instrument should be properly grounded through the protective ground conductor of the
power cord.
Note 2: Up to 10 KHz; >10 kHz see figure 1.1
Note 3: Maximum of 50 mJ during any 100 ms interval.
2.1.11 Step Response
5 Divisions Pulse In 50ΩInput Impedance
STEP RESPONSE See Note 1
Note 1: Calculated from the formula: Rise time = 0.35 / Bandwidth and is measured over the central
5 divisions (vertical)
1k 10k 100k 1M 10M 100M
10
20
50
100
200
400
MAX. INPUT
VOLTAGE (Vpk)
FREQUENCY (Hz)
ST6063
Figure 2.2 Max. input voltage versus frequency

2 - 6 CHARACTERISTICS
CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS
2.1.12 Signal Delay
A: VISUAL SIGNAL DELAY 15 ns PM3390B94B
13 ns PM3370B/80B/84B
DELAY BETWEEN CHANNELS
CH1 and CH2 <250 ps PM3370B/80B/90B
CH1.... CH4 <250 ps PM3384B/94B
2.1.13 Vertical Accuracies
ACCURACY
deflection factor
A: Gain error (dc) ±1.3 % Over central 6 divisions
See Note 1
D: Additional gain error (dc) ±0.7%
Gain error TrigView ±3 %
A: Nonlinearity ≤2 % See Note 2
D: Digital non linearity ≤4.5 % See Note 2
MAX. BASELINE
INSTABILITY
Jump (all between 0.2 div or 1 mV Whichever is greater
steps, var, and N/I) (after autocal)
Drift 0.1 div/h
Temperature coefficient 0.03 div/K
CHANNEL ISOLATION
Of deselected
channels at 10 MHz 100:1 See Note 3
Of deselected
channels at upper
transition point 50:1 See Note 4
Between selected channels 50:1 See Note 5
CMRR See Note 6
at 2 MHz 100:1
at 50 MHz 25:1
Note 1: Add 1.5% for variable gain mode.
Note 2: 2 division center screen signal with a frequency of 50 kHz, shifted within central 6 divisions.
Note 3: At 10 MHz; input to deselected channel equivalent to 8 divisions or less.
Note 4: Channels with equal V/div; input to deselected channels equivalent to 6 divisions.
Note 5: Channels with equal V/division settings; input to either channel 6 div. PM3390B/94B; max.
input amplitude 3Vpp
Note 6: Between any two input channels at same attenuator setting; VAR of V/div setting adjusted
for best CMRR; measured with max. 8 div.

CHARACTERISTICS 2 - 7
CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS
2.2 TIMEBASE
2.2.1 Timebase (modes)
TIMEBASE MODES MTB only MTB= Main Timebase
MTB and DTB Alternating TB-mode
DTB only DTB = Delayed Timebase
Variable TB
Auto TB
MTB trigger modes AUTO Free run after 100 ms
TRIGGERED
SINGLE SHOT
SINGLE SCAN
DTB trigger modes DTB starts Starts after delay time
DTB triggered Starts on first trigger
after delay time
2.2.2 Timebase Settings (Analog Mode Only)
MTB PM3390B/PM3394B
Settings 0.5s/div to 20 ns/div See Note 1
Variable Time/div range 1.25s/div to 20 ns/div MTB continuously variable
MTB PM3370B/PM3380B/PM3384B
Settings 0.5s/div to 50 ns/div See Note 1
Variable Time/div range 1.25s/div to 50 ns/div MTB continuously variable
DTB PM3390B/PM3394B
Settings 0.5s/div to 20 ns/div See Note 1, See Note 3
DTB PM3370B/PM3380B/PM3384B
Settings 0.5s/div to 50 ns/div See Note 1, See Note 3
TIMEBASE
MAGNIFICATION 10x See Note 2
Note 1: In a 1-2-5 sequence. By means of the timebase magnifier (x10) the range is extended to 2
ns/div (PM3390B/94B) or 5ns/div (PM3370B/80B/84B).
Note 2: Expands the normal time/div by 10 times (MTB and DTB)
Note 3: The DTB sweep speed is higher or equal to MTB time/div setting.
2.2.3 DTB Delay (Analog Mode Only)
DELAY TIME 2 ns to 4.9s
Position range 0.1 div to 9.9 div
Resolution 1: 40000

2 - 8 CHARACTERISTICS
CHARACTERISTICS ADDITIONAL INFORMATIONSPECIFICATIONS
2.2.4 Timebase Settings (Digital Mode Only)
MTB Settings
REAL TIME SAMPLING 200s/div to 250 ns/div See Note 1 and 4
ROLL 200s/div to 200 ms/div See Note 2
RANDOM SAMPLING
PM3390B/94B 200 ns/div to 2 ns/div See Note 2
PM3370B/80B/84B 200 ns/div to 5 ns/div See Note 2
Variable Timebase 2 nsec ...1 µsec/div 1-2-5 sequence steps
1 µsec ... 500 µsec/div 1 µsec step size
500 µsec ... 200 sec/div equals analog step size
Auto Timebase
Capture Range DC up to full bandwidth
Dynamic Range 2 nsec ... 200 msec/div
DTB Settings (STARTS/TRIGGERED) See Note 5
REAL TIME SAMPLING 0.5 ms/div to 250 ns/div or Whichever is greater
0.5 ms/div to 0.001x
MTB setting See Note 1 and 3
RANDOM SAMPLING 200 ns/div to 20 ns/div or Whichever is greater
200 µs/div to 2 ns/div 200 ns/div to
only for MTB 0.001x MTB setting See Note 2 and 3
Note 1: In a 1-2-5 sequence and 250 ns.
Note 2: In a 1-2-5 sequence.
Note 3: The DTB sweep speed is higher or equal to MTB time/div. setting.
Note 4: When DTBis on: 500 ms/div to ....
Note 5: DTB is only possible with normal acquisition length. Triggered DTB is not possible in
combination with tv, logic or event delay trigger mode.
2.2.5 Timebase Delay (Digital Mode Only)
TIME DELAY
TRIGGER POSITION
Acquisition length
normal -10 to 0 div pretrigger
Acquisition length max.
PM3384B/94B -640 to 0 div pretrigger
PM3370B/80B/90B -160 to 0 div pretrigger, note 1
DELAY 0 to 1000 div posttrigger
Resolution steps of 0.02 div sample distance
EVENTS DELAY
Range 1 to 16384 See event counter
Note 1: When extended memory option is installed Time delay of trigger position at max. acquisition
length is -640 to 0 div. pretrigger.