Tektronix 2252 User manual

~ rV Z \S OPERATORS 070-7837-00
I c r y MANUAL __________________Product Group 4
PORTABLE
OSCILLOSCOPE
OPERATORS.
Please Check for
CHANGE INFORMATION
a he Rear of his Manual
First Printing JULY 1990

Copyright © 1990 Tektronix, Inc. A!! rights reserved. Contents of this publi
cation may not be reproduced in any form without the written permission of
Tektronix, inc.
Products of Tektronix, Inc. and its subsidiaries are covered by U.S. and for
eign patents issued and pending.
TEKTRONIX, TEK, SCOPE-MOBILE and
of Tektronix, Inc. are registered trademarks
Printed in U.S.A. Specification and price change privileges are reserved.
INSTRUMENT SERIAL NUMBERS
Each instrument has a serial number on a panel insert, tag, or stamped on the
chassis. The first two digits designate the country of manufacture. The last
five digits of the serial number are unique to each instrument.The country of
manufacture is identified as follows:
B000000 Tektronix, Inc., Beaverton, Oregon, U.S.A.
E200000 Tektronix United Kingdom, Ltd., London
G100000 Tektronix Guernsey, Ltd., Channel Islands
HK00000 Tektronix, Inc., Hong Kong
H700000 Tektronix Holland, NV, Heerenveen, The Netherlands
Sony/Tektronix, JapanJ300000

Certificate of the Manufacturer/im orter
We hereby certify that the 2252 OSCILLOSCOPE ________
_________________________ AND ALL INSTALLED OPTIONS
complies with the RF Interference Suppression requirements of
Amtsbl.-Vfg 104 /1984.
The German Postal Service was notified that the equipment is
being marketed.
The German Postal Service has the right to re-test the series
and to verify that it complies.
TEKTRONIX
Bescheinigung des Hersteliers/l'm orteurs
Hiermit wtrd bescheinigt, daB der/die/das ______________ l __
2252 OSCILLOSCOPE AND ALL INSTALLED OPTIONS
in Ubereinstimmung mil den Bestimmungen der Amtsbiatt-
Verfugung 1048/1984 funkentstort ist.
Der Deutschen Bundespost wurde das inverkehrbringen
dieses Gerates angezeigt und die Berechtigung zur
Oberprufung der Serie auf Einhalten der Bestimmungen
eingeraumt.
TEKTRONIX

NOTICE to the user/operator:
The German Postal Service requires that systems assembled
by the operaior/user of this instrument must also comply with
Postal Regulation, Vfg. 104 /1984, Par. 2, Sect. 1.
HiNWEIS fur den Benutzer/Betreiber:
Die vom Betreiber zusammengestellte Anlage, innerhalb deter
dies Gerat eingesetzt wird, muB ebenfails den Voraussetzungen
nach Par. 2, Ziff. 1 der Vfg. 104 /1984 genugen.
NOTICE to the user/operator:
The German Postal Service requires that this equipment, when
used in a test setup, may only be operated if the requirements
of Postal Regulation, Vfg. 104 /1984, Par. 2, Sect. 1.7.1 are
complied with.
HINWEIS fur den Benutzer/Betreiber:
Dies Gerat darf in MeBaufbauten nur betrieben werden, wenn
die Voraussetzungen des Par. 2, Ziff. 1.7.1 der Vfg. 104 /1984
eingehalten werden.

TABLE OF CONTENTS
Page
LIST OF ILLUSTRATIONS ............... viii
LIST OF TABLES . ......................................... be
OPERATORS SAFETY SUMMARY ......... .. ................................... ..... X
SECTION 1-INTRODUCTION
PRODUCT OVERVIEW............................................................................................. 1-1
Description ................................................................................................................ 1-1
Standard Accessories ............................................................................................. 1-3
PREPARATION FOR USE......................................................................................... 1-4
Safety ...................................................................................................... 1-4
Line Fuse ................................................................................................................... 1-4
Line Voltage and Power Cord ................................................................................ 1-4
Instrument Cooling................................................................................................... 1-8
Start-Up ..................................................................................................................... 1-
Repackaging for Shipment ..................................................................................... 1-7
SECTION 2 -CONTROLS, CONNECTORS, AND INDICATORS
CRT, Power, and Display ......................................................................................... 2-1
Vertical......................................................................................................................... 2-3
Horizontal ................................................................................................................... 2-8
Trigger............................................................................................} ........................ 2-12
A Trigger Modes ............................................................................................... 2-15
. B Trigger Modes ............................................................................................... 2-1
Rear Panel................................................................................................................. 2-20
Menu System, Hardcopy, and GPIB Controls and Indicators ......................... 2-21
2252 Opera ors i

Page
SECTION 3“ OPERATORS FAMILIARIZATION
INTRODUCTION..........................................................................
BASIC OPERATION ..................................................................
Graticule.....................................................................................
4
Readout Display.........................................................................
Connecting Input Signals.........................................................
Grounding.............................................................................
Probes...................................................................................
Coaxial Cables ......................................................................
External Triggering .............................................................
Auto Setup .................................................................................
Minimum Setup ........................................................................
Remote Control via the Communications P o rt .....................
MENU SYSTEM OPERATION .................................................
Introduction ...............................................................................
Clearing the Menu and Cursors Display................................
Setting Measurement Channel.................................................
Recalling the Last Measurement M ode ..................................
Channel 1 and Channel 2 Voltmeter ......................................
Voltmeter Measurements Page 1 ......................................
Voltmeter Measurements Page 2, GATED Measurements
Cursor Volts Measurements.....................................................
Time Menus ...............................................................................
Counter/Timer ...........................................................................
C/T Measurement Menu Page 1 ........................................
Gated C/T Measurement Menu Page 2 ...........................
C/T Control Menu ...............................................................
Conditions for Cursors Display ........................................
Measurement Cursors.........................................................
Track Trig LvS Cursors.........................................................
Track fh Cursors..................................................................
Behavior for Horizontal Mode Changes..................................
Measurement Compatibility and Error Messages .................
Measurements in Single Sequence Mode ...........................
3-1
3-1
3-1
3-3
3-4
3-4
3-4
3-4
3-5
3-5
3-5
3-5
3-
3-
3-7
3-7
3-9
3-10
3-11
3-12
3-12
3-15
3-23
3-24
3-25
3-2
3-29
3-29
3-29
3-30
3-30
3-31
3-33
a2252 Opera ors

Page
SECTION 3-OPERATORS FAMILIARIZATION (cont)
Service Menu Features ........................... 3-33
Contigure Menu............................................................................................. 3-34
Self Cal Measurements . ........................ 3-37
Internal Settings Menu ............................................ 3-38
Store/Recall Setup Features................................................................................... 3-39
Factory Stored Setups ........................... 3-40
Recall Only Menu ............................................................................................. 3-41
Store/Recall Setup Menu ................................................................................. 3-43
Recovering A Deleted Setup ............................................................................ 3-47
Storing Setups in Sequences ............. .. .. ......................................................... 3-48
Waveform Digital Acquisition Modes ..................... 3-50
SECTION 4-OPERATOR CHECKS AND ADJUSTMENTS
Introduction .............................................. 4-1
Initial Setup............................................................. 4-1
Auto Setup Function.................................................................................................. 4-2
Trace Rotation Adjustment .................................... 4-3
Probe Low-Frequency Compensation . ............................... 4-3
Vertical Deflection Check . ........................................................................................ 4-5
Timing Checks ....................... 4-
SECTION 5 —BASIC APPLICATIONS
Introduction . .............................................................................. 5-1
CH 1/CH 2 Voltmeter Measurements ....................................................... 5-1
Peak Voltage Measurement..................................................................................... 5-2
Gated Voltage Measurement......................................................... 5-4
Voltage Measurement Cursors................................................................................. 5-
Voltage Difference ............................. 5-
Ground-Referenced Voltage .............................................................................. 5-8
2252 Opera ors Hi

Page
SECTION 5 -"BASIC APPLICATIONS (cont)
Tims Measurement Cursors..................................................................................... 5-9
Time Difference.................................................................................................. 5-10
Propagation Delay f ........................................................................................... 5-10
Rise Time Measurements ................................................................................. 5-11
Phase Measurements ....................................................................................... 5-11
Frequency and Period Measurements ........................................................... 5-14
Time Delay Measurement ..................................................................................... 5-14
Track Trigger Level Cursors................................................................................... 5-17
Setting Trigger Level......................................................................................... 5-20
Use of the Add M ode.............................................................................................. 5-22
Hardcopy O utput.................................................................................................... 5-25
SECTION - PERFORMANCE CHARACTERISTICS
Introduction ............................................................................................................... -1
Recommended Calibration Schedule.................................................................... -1
SECTION 7-PERFORMANCE CHECK PROCEDURE
Introduction .............................................................................................................. 7-1
Test Equipment Required......................................................................................... 7-1
Performance Check interval..................................................................................... 7-1
Preparation................................................................................................................. 7-1
Index to Performance Check Procedure................................................................ 7-
DISPLAY..................................................................................................................... 7-9
Trace Rotation.................................................................... 7-9
Geometry ......... ................................................................................................... 7-10
VERTICAL................................................................................................................. 7-11
Input COUPLING Functional Check................................................................ 7-11
CH 1 and CH 2 VOLTS/DIV Trace Shift ......................................................... 7-12
CH 3 and CH 4 VOLTS/DIV Trace Shift .................................. 7-13
CH 1 and CH 2 VAR VOLTS/DIV Trace Shift ................................................. 7-13
CH 1 and CH 2 Input COUPLING Trace Shift ............................................... 7-14
CH 2 INVERT Trace Shift................................................................................... 7-14
iv 2252 Opera ors

Page
SECTION 7— PERFORMANCE CHECK PROCEDURE (cont)
VERTICAL (cont)
CH 1 and CH 2 VAR VOLTS/DIV Range......................................................... 7-14
Low Frequency Linearity C heck...................................................................... 7-15
CH 1 and CH 2 Vertical Deflection Accuracy................................................. 7-1
CH 3 and CH 4 Vertical Deflection Accuracy................................................. 7-17
ADD Mode and CH 2 INVERT Deflection Accuracy .................................... 7-18
Vertical POSITION Range (all channels) ....................................................... 7-19
CH 1 to CH 2 Signal Delay Match ................................................................. 7-20
CH 1 to CH 4 Signal Delay Match ................................................................. 7-21
CH 3 to CH 4 Signal Delay Match .................................................................. 7-22
Ch 1 and CH 2 Vertical Bandwidth ............................................................... 7-22
CH 3 and CH 4 Vertical Bandwidth ................................................................. 7-23
SCOPE BW {Bandwidth Limit) Accuracy....................................................... 7-24
Common-mode Rejection Ratio .................................................................... 7-24
Channel Isolation................................................................................................ 7-25
AC-Coupled Lower -3 dB Point...................................................................... 7-2
Vertical ALT and CHOP M odes........................................................................ 7-27
BEAM FIND Functional Check ........................................................................ 7-27
A and B Trace Separation................................................................................. 7-28
TRIGGERING .......................................................................................................... 7-29
500 Hz Trigger Sensitivity ................................................................................. 7-29
500 kHz Trigger Sensitivity ............................................................................... 7-30
25 MHz Trigger Sensitivity................................................................................. 7-31
150 MHz Trigger Sensitivity.......................................................................... 7-32
Single Sweep Mode ...........................................................>. .. .. ....................... 7-34
Trigger LEVEL Control Range.......................................................................... 7-34
TV Field Trigger Sensitivity ............................................................................... 7-35
TV Line Trigger Sensitivity................................................................................. 7-3
Line Trigger Functional Check ..................................■..................................... 7-3
2252 Opera ors v

SECTION 7 —PERFORMANCE CHECK PROCEDURE (cont)
Page
HORIZONTAL ............................... 7-37
A and B Sweep Length..................................................................................... 7-37
Horizontal POSITION Range............................................................................. 7-38
VAR SEC/DIV Range.......................................................................................... 7-38
Magnifier Registration ....................................................................................... 7-39
A and B Timing Accuracy and Linearity ......................................................... 7-39
A and B Magnified Timing Accuracy and Linearity . .. ................................... 7-40
Delay Time Jitte r........... .... ................................................................................ 7-42
Delay Time Accuracy ....................................................................................... 7-43
Delay Time Position Range............................................................................... 7-44
X-Axis Gain Accuracy ....................................................................................... 7-45
X-Y Phase Difference ....................................................................................... 7-45
X-Axis Bandwidth ......................................................................................... 7-4
MEASUREMENT CURSORS ................................................................................. 7-47
SEC ->| and |+~ 1 / SEC -M Cursor Accuracy ............................................ 7-47
t+- PHASE -H Cursor Accuracy ...................................................................... 7-48
\4~ VOLTS -*[ Cursor Accuracy...................................................................... 7-48
fh VOLTS -*f Cursor Accuracy...................................................................... 7-49
Tracking Cursors Position Accuracy................................................................ 7-49
CH 1/CH 2 VOLTMETER ....................................................................................... 7-51
DC Volts Accuracy ................... :......................................................................... 7-51
DC Volts Norma! Mode Rejection Ratio .......................................................... 7-52
4- Peak, -Peak, Peak-to-Peak Volts Accuracy........................................... 7-53
25 MHz + Peak, -Peak, and Peak-to-Peak Volts Accuracy ....................... 7-54
100 MHz +Peak, -Peak, and Peak-to-Peak Volts Accuracy ..................... 7-54
Gated Volts Accuracy ................. 7-55
COUNTER/T1MER.................................................................................................... 7-5
Period ........................... 7-5
Width 7-57
Rise Time Accuracy ......................................................................................... 7-59
2252 Opera or?

Page
SECTION 7-PERFORMANCE CHECK PROCEDURE (cont)
EXTERNAL 2-AXIS AND PROBE ADJUST AND
FRONT-PANEL SETUP FUNCTIONS .................................................................. 7- 0
Check External Z-Axis Input............................................................................ 7- 0
PROBE ADJUST O utput .................................................................................. 7- 1
AUTO SETUP Functional Check...................................................................... 7- 1
Run MAKE FACTORY SETTINGS Routine ..................................................... 7- 2
OPTION 1 5 ............................................................................................................... 7- 3
Signal Output...................................................................................................... 7- 3
A GATE Output ............................................... 7- 4
SECTION 8-OPTIONS AND ACCESSORIES
Introduction ............................................................................................................... 8-1
International Power Cords ....................................................................................... 8-1
Option 15 ................................................................................................................... 8-1
Option 1R Rackmounted Instrument...................................................................... 8-2
Other Available O ptions........................................................................................... 8-2
Standard Accessories ............................................................................................. 8~3
Optional Accessories................................................................................................ 8-3
APPENDIX A - AUTO AND FACTORY SETTINGS AND SETUPS
APPENDIX B - GPIB OPERATION
2252 Opera ors vii

LIST OF ILLUSTRATIONS
Figure Page
1- 1 The 2252 Oscilloscope ................... 1~1
1 ~2 Optional power co rd s.................................................................................. 1-5
2- T CRT, power, and display controls .............................................................. 2-2
2-2 CH 1 and CH 2 vertical controls and indicators ..................................... 2-4
2-3 Vertical connectors and CH 3 and CH 4 controls ................. 2-7
2-4 Horizontal controls and indicators ............................................................. 2-9
2-5 Trigger controls and indicators................................................... 2-14
2- Rear panel................................................................................................... 2-20
2- 7 Menu controls............................................................................................. 2-22
3- 1 Graticule measurement markings ................................ 3-2
3-2 Readout display locations............................................................................ 3-3
3-3 Menu buttons ............................................................................................... 3-
3- 4 Typical Store/Recall Setup sequencing ........................................ 3-39
4- 1 Probe compensation . .. .. .. ............................................................................ 4-4
5- 1 -f PEAK voltage measurement and tracking cursors ............. 5-4
5-2 Gated voltage measurement ...................... 5-
5-3 Voltage difference measurement using cursors ..................................... 5-7
5-4 Voltage measurement.................................................................................. 5-9
5-5 Making a phase difference measurement .............................................. 5-13
5- Time difference between the two delays ............................................... 5-17
5-7 A and B Track Trig Lvl cursors........................... ............ .. ....................... 5-18
5-8 Setting a specific trigger level ..................................................... 5-21
5- 9 Eliminating common-mode signals ........................................................ 5-24
- 1 Maximum input voltage versus frequency derating curve for
the CH 1, CH 2, CH 3, and CH 4 input connectors ............................ -29
-2 Dimensional drawing, standard cabinet.................................................. -35
-3 Dimensional drawing, rackmount cabinet (2240F1R) ............................ -3
viii 2252 Opera ors

LIST OF TABLES
Table Page
2- 1 VERT Trigger SOURCE.................................................................................2-18
3- 1 Behavior for Horizontal MODE Changes....................................................3-31
5- 1 Trigger Cursor Channel ...............................................................................5-20
- 1 Electrical Characteristics................................................................................. -2
-2 Environmental Characteristics .................................................................... -28
- 3 Mechanical Characteristics.................................................. -30
7- 1 Test Equipment Required..............................................................................7-3
7-2 Signal-to-Graticule Accuracy .................................. 7-1
7-3 Settings for Timing Accuracy Checks........................................................7-41
7-4 Delay Time Accuracy .................................. 7-44
A-1 AUTO SETUP Control Settings .................................................................. A-1
A-2 M!N SETUP Control Settings ..................................................................... A-5
A-3 Factory Settings .......................................................................................... A-
r
2252 Opera ors ix

OPERATORS SAFETY SUMMARY
The safe y informa ion in his summary is for opera ing personnel. Warnings
and cau ions will also be found hroughou he manual where hey apply.
Terms in This Manual
*
CAUTION statements identify conditions or practices that could result in
damage to the equipment or other property.
WARNING statements identify conditions or practices that could result in per
sonal injury or loss of fife.
Terms as Marked on Equi ment
CAUTION indicates a personal injury hazard not immediately accessible as
one reads the markings, or a hazard to property, including the equipment it
self.
DANGER indicates a personal injury hazard immediately accessible as one
reads the marking.
Symbols in This Manual
This symbol indicates where applicable
cautionary or other information is to
be found. For maximum Input voltage
see Table -1.
Symbols as Marked on Equi ment
A
DANGER-High voltage.
Protective ground (earth) terminal.
ATTENTION - Refer to manual.
x2252 Opera ors

Power Source
This product is intended to operate from a power source that does not apply
more than 250 V rms between the supply conductors or between either sup
ply conductor and ground. A protective ground connection, by way of the
grounding conductor in the power cord, is essential for safe operation.
Grounding the Product
This product is grounded through the grounding conductor of the power
cord. To avoid electrical shock, plug the power cord into a properly wired
receptacle before making any connections to the product input or output ter
minals. A protective ground connection, by way of the grounding conductor
in the power cord, is essential for safe operation.
Danger Arising Prom Loss of Ground
Upon loss of the protective-ground connection, all accessible conductive
parts, including knobs and controls that may appear to be insulating, can ren
der an electric shock.
Use the Pro er Power Cord
Use only the power cord and connector specified for your product.
The power cord must be in good condition.
Read Section 1 for power-cord and connector information.
Use the Pro er Fuse >
To avoid fire hazard, use only a fuse of the correct type, voltage rating and
current rating as specified on the back of your product and in Table -1.
Do Not O erate in an Ex losive Atmos here
To avoid explosion, do not operate this product in an explosive atmosphere.
2252 Opera ors xi

Do Not Remove Covers or Panels
To avoid personal injury, do not remove the product covers or panels. Do not
operate the product without the covers and panels properiy installed.
xii 2252 Opera ors

SECTION 1
INTRODUCTION
2252 Opera ors

In roduc ion
PRODUCT OVERVIEW
Description
The 2252 is a 100 MHz, four-channel, dual-sweep portable oscilloscope for
general-purpose use (Figure 1-1). A microprocessor-based operating sys
tem controls most of the functions in the instrument, including a fully
integrated menu-driven voltage and time measurement system with
SmartCursors™. Acounter/timer (C/T) is integrated into the trigger system to
provide many automated counting and timing measurements with high ac
curacy. Other features include single-button automatic front-panel setup
and a menu-driven store/recall setup function. A menu-driven service mode
provides for configuring of certain menu and readout displays, internal
calibration, and servicing diagnostics. The instrument provides a hardcopy
output of the displayed waveform. The instrument is equipped with a General
Purpose interface Bus (GPIB) that allows it to be operated by the program
ming of the controller.
7837-01
Figure 1-1, The 2252 Oscillosco e.
2252 Opera ors 1-1

In roduc ion
The vertical deflection system has four input channels. Two channels have 11
basic deflection factors from 2 mV to 5 V per division, and two channels have
two basic deflection factors of 0.1 V and 0.5 V per division. Basic deflection
factors can be extended with attenuator probes. VOLTS/DIV readouts are
switched to display the correct vertical scale factors when properly coded
probes are connected to the vertical input connectors.
The horizontal deflection system provides single, dual, or delayed sweeps
from 0.5 s to 20 ns per division (delayed sweep, 5 ms to 20 ns per division).
The trigger system provides stable triggering over the fuil bandwidth of the
vertical deflection system.
Alphanumeric crt readouts of the vertical and horizontal scale factors are dis
played at the bottom of the screen. On-screen vertical and horizontal cursors
provide accurate voltage, time, frequency, and phase measurements;
measurement values are displayed at the top of the crt.
Measurement features include voltage, time, frequency, and phase, counter/
timer measurements, and risetime/falltime or propagation delay. Voltage
measurements include positive peak, negative peak, peak--to-peak, and
average dc levels, measured over the entire display or a selected portion
(gated measurements).
Counter/timer measurements include frequency, period, width, totalize,
frequency ratio, gated frequency, gated period, gated width, gated events,
delta time, one-over-delta time, phase, rise/fal! time, and propagation delay,
using an interna! or external frequency standard. Counter/timer measure
ments can be averaged to increase the number of displayed digits, and
measurement trigger points can be indicated with cursors on screen.
Positionabie cursors allow absolute voltage, voltage difference, time
difference, frequency, and phase measurements. SmartCursors® visually
track voltage measurements, trigger levels and ground and may be
selectively displayed with the waveforms. Time, frequency, and phase
measurements referenced to the trigger event or between two user-selected
events are available in ALT and B horizontal modes.
By pressing a single button (AUTO SETUP), the front-panel controls can be
set up to produce a usable waveform display based on the voltage and time
characteristics of the input signals.
The Store/Recall system lets you store and recall up to 20 different front-
panel setups. Stored setups can be arranged in sequences as required for
specific applications.
1-2 2252 Opera or,5