2465A/2455A/2445A

TEK OPERATORS
rwwwt
R
070-6014-00
Product Group 38
2465A/2455A/2445A
OSCILLOSCOPES
and OPTIONS
Please Check for
CHANGE INFORMATION
at the Rear of This Manual
-
I*”
C
C
First Printing JUN 1986
Revised NOV 1986
lkktmnixi
oouuTMnJ-
- .
<
. .
-m.-..
.--..e
.
.TEK .INTER-OFFICE COMlvllJNlCATlON
.
TO
FWW
M3KC.T
Sohn Martin
94-540
Juno
3:. ’ t
25,
1991
Frank Gray, SO-PAT
GIDEP permit
request
In response to the request to grant permission to the
Government Industry Exchange Pro ram (GPDEP) to reproduce
service and Pnstruction
manuals,
Tektronix
operator,
Tektronix,
Inc. hereby grant6 such permission
for distribution
of such documents to any GTDEP user that
is a full
participant
in the Metrology
Data Interchange
Data Base of GIDEP provided
that all copies of the original
work include the entire
copyright
notice and ownership statement
exactly
a-& it appears
in the original,
together
with the Legend "Reproduded with
pemieeion,a
This
permission
Committee
aeon%
has been approved
of
Tektronix
1[ded to GIDEP to grovide’the
and
by the Intellectual
a
copy
requested
of
this
memo
permission.
geG&dy
Group Patent
Pat&t C&nsal
Counsel v
may
Copyright
@ 1986 Tektronix,
Inc. All rights reserved.
Contents of this publication 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 foreign patents and/or pending patents.
TEKTRONIX, TEK, SCOPE-MOBILE,
and
are
registered trademarks of Tektronix, Inc. TELEQUIPMENT
is a registered trademark of Tektronix U.K. Limited.
Printed in U.S.A. Specification
are reserved.
INSTRUMENT
and price change privileges
SERIAL NUMBERS
Each instrument has a serial number on a panel insert, tag,
or stamped on the chassis. The first number or letter
designates the country of manufacture. The last five digits
of the serial number are assigned sequentially and are
unique to each instrument.
Those manufactured
in the
United States have six unique digits. The country of
manufacture is identified as follows:
BOO0000
100000
Tektronix,
200000
Tektronix United Kingdom,
Sony/Tektronix, Japan
300000
700000
Tektronix
Inc., Beaver-ton, Oregon, USA
Guernsey,
Ltd., Channel Islands
Ltd., London
Tektronix Holland, NV, Heerenveen,
The Netherlands
NOTICE to the user/operator:
The German Postal Service requires that Systems assembled by the
operator/user of this instrument must also comply with Postal
Regulation, Vfg. 1046/1964, Par. 2, Sect. 1.
HINWEIS fur den Benutzer/Betreiber:
Die vom Betreiber zusammengestellte Anlage, innerhalb derer dies
Gerat eingesetzt wird, muA ebenfalls den Voraussetzungen nach Par. 2,
Ziff. 1 der Vfg. 104611984 genugen.
I
I
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. 1046/l 984, Par. 2, Sect. 1.7.1 are complied with.
HINWEIS fir den Benutzer/Betreiber:
Dies Gerat darf in MeRaufbauten nur betrieben werden, wenn die
Voraussetzungen des Par. 2, Ziff. 1.7.1 der Vg. 1046/l 984 eingehalten
werden.
Certificate
of the Manufacturer/Importer
We hereby certify that the
AND
ALL
2465A,
2455A,
INSTALLED
complies with the RF Interference
AmtsbL-Vfg 1046/1984.
2445A
OSCILLOSCOPES
OPTIONS
Suppression
requirements
of
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 Herstellersllmporteurs
Hermit wird bescheinigt, daA der/die/das
OSCILLOSCOPES
AND
ALL
2465A,
INSTALLED
2455A,
2445A
OPTIONS
in Ubereinstimmung mit den Bestimmungen der Amtsblatt-Verfugiing
1046/l 984 funkentstijrt ist.
Der Deutschen Bundespost wurde das lnverkehrbringen dieses Gerates
angezeigt und die Berechtigung zur Uberprufiing der Serie auf Einhalten
der Bestimmungen eingeraumt.
TEKTRONIX
L
.-
Contents
Page
illustrations .................................................................................................. iv
Tables .......................................................................................................... V
Operators Safety Summary.. ...................................................................... vi
The 2465A, 2455A, 2445A ......................................................................... ix
1
General Information
2
Operation
Preparation for Use.. ................................................................................... l-l
Safety.. ................................................................................................... l-l
Line Voltage Selection ........................................................................... l-l
Line Fuse ............................................................................................... l-l
Power Cord ............................................................................................ l-3
Instrument Cooling ................................................................................. l-4
Start-up. ................................................................................................. l-4
Repackaging For Shipment. ........................................................................ l-5
Fundamentals.. .......................................................................................... 2-l
Getting a Display ...................................................................................... 2-1
Vertical ...................................................................................................... 2-2
Horizontal.. ................................................................................................ 2-4
Trigger Controls ........................................................................................ 2-4
Video Triggering ........................................................................................ 2-6
Readout.. ................................................................................................... 2-6
Measurements with Cursors .................................................................... 2-l 6
Display Operation ..................................................................................... 2-l 2
Signal Connections ................................................................................... 2-12
Magnify Waveform Details with Delayed-Sweep.. ................................... 2-13
B-Trigger Operation .................................................................................. 2-14
Delta-Delay-Time ....................................................................................... 2-15
Single-Delay-Time Measurements.. .......................................................... 2-l 6
Precision Timing ........................................................................................ 2-17
Triggered Delta-Delay-Time Measurements ............................................ 2-18
Time Interval Resolution ........................................................................... 2-20
Measurement Updating ............................................................................ 2-20
Frequency, Period, and Totalize Counting.. ............................................. 2-22
Delay Sweeps by Event Counts.. ............................................................. 2-23
Logic Triggering ........................................................................................ 2-28
Word Recognizer Operation ..................................................................... 2-30
The Word Out Signal.. .............................................................................. 2-31
DMM ......................................................................................................... 2-31
Save and Recall Operation ....................................................................... 2-32
2465AI2455Al2445A
Operators
i
3
4
Applications
Peak-to-Peak
Voltage ............................................................................
Absolute
Voltages..
................................................................................
Noise Immunity..
.....................................................................................
“Quick
and Dirty” DC Voltage
Measurement..
......................................
Amplitude
Modulation.
...........................................................................
Frequency
Modulation
...........................................................................
Measuring
Video Signals
in IRE Units.. ................................................
Avoiding
False Displays
with Multi-Mode
Signals ................................
Algebraic
Addition
to Detect Coincidence
or Cancel
Interference
........
Observing
Coincidence
of Digital Signals .............................................
Measuring
Off-Ground
Signals
And Cancelling
Interference..
..............
Period and Frequency
............................................................................
Rise Time and Fall Time .............. ..........................................................
Propagation
Delay .................................................................................
Setup and Hold Times ...........................................
................................
Slew Rate ...... .........................................................................................
Time Ratio.. ...........................................................................................
Phase Difference
Between
Two Signals..
.............................................
Checks
and Adjustments
Introduction
........ ....................................................................................
Initial Setup. ...........................................................................................
Trace Rotation
and Adjustment..
..........................................................
Astigmatism
Adjustment
........................................................................
Auto DC Balance
Routine.. ........... .........................................................
Probe Compensation
.............................................................................
Matching
Channel
2 Delay .....................................................................
Amplitude
Check. ...................................................................................
Timing Check ...................................
......................................................
5
Controls,
3-l
3-1
3-2
3-2
3-2
3-3
3-4
3-4
3-4
3-5
3-5
3-6
3-7
58
3-8
3-9
3-10
3-l 1
Connectors,
4-l
4-1
4-1
4-2
4-2
4-3
4-4
4-5
4-5
and Indicators
Introduction..
... .......................................................................................
Power And Display
................................................................................
Setup and Vertical ..................................................................................
Horizontal
........ .......................................................................................
Delay and Delta Controls..
........... . .........................................................
Rear Panel.. .......................................
.....................................................
DMM.. ................................
.....................................................................
DMM Displays
.....................................................................................
Display-Mode
Interactions..
................................................................
5-1
5-l
5-4
5-l 1
5-14
5-25
5-27
5-31
5-31
ii
2465Ai2455Ai2445A
Operators
Contents
6
Performance Characteristics
7
Options and Accessories
Performance Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. .. . . 6-l
Introduction ............................................................................................ 7-l
Option 11 ................................................................................................ 7-1
Option 1 R.. ............................................................................................. 7-l
Power Cord Options .............................................................................. 7-2
Standard Accessories.. .......................................................................... 7-3
Optional Accessories ............................................................................. 7-4
A
Appendix A
B
Appendix 6
C
Appendix C
Extended Functions with Diagnostic Exercisers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-l
Sequence Programming and Operation . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .. . B-l
Executing Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . B-3
Power Up Tests.. ......................................................................................... C-l
Kernel Test ............................................................................................. C-l
Confidence Tests ................................................................................... C-l
D
D Appendix
Delta-Time
and Delta-Delay-Time Accuracy under Noted
Conditions for the C/TiT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-l
Delay-Time Accuracy under Noted Conditions for the
C/T/T Option . .. . . . . . . .. . . . .. . .. .. . . . . . . . . . . . . .. . . . .. . .. . . . . . . . . . . . . . . .. . . . .. . .. . . . . . . . . . . . . . . .. .. . . . . . D-2
2465AI2455Al2445A
Operators
iii
Illustrations
Figure
P8ge
l-l
Line selector
2-1
Readout
3-1
3-2
3-3
3-4
3-5
3-6
3-7
................................................................................
Instantaneous
voltages..
Eliminating
common-mode
signals
................................................................
Measuring
rise times.. ....................................................................................
Time between
two pulses (cursor
method)
...................................................
Time ratio (duty factor). ..................................................................................
Phase difference
between
two signals..
........................................................
Small-angle
phase difference..
.......................................................................
3-1
3-6
3-7
3-9
3-10
3-l 1
3-l 1
4-l
Probe
4-3
5-l
5-2
5-3
5-4
5-5
5-6
5-7
5-a
Power and display
controls
...........................................................................
SETUP
and MODE
buttons,
and CH 1 and CH 2 POSITION
controls..
Channel
1 and Channel
2 controls
and connectors..
....................................
CH 3 and CH 4 controls
and connectors
and CALIBRATOR
output..
Horizontal
and delta measurement
controls..
................................................
Trigger
controls
and indicators..
....................................................................
............................................................
Rear panel controls
and connectors..
DMM controls
and connectors
......................................................................
6-l
Dimensional
iv
switch,
display
line fuse,
locations..
low-frequency
drawing
and detachable
power
cord..
.......................
l-3
............................................................................
compensation
2-9
..............................................................
......................................................................................
2465Al2455Al2445A
.....
........
5-3
5-5
5-7
5-9
5-l 1
5-18
5-26
5-28
6-35
Operators
Contents
Tables
Table
IWP
CD
Page
l-l
Power Cord and Voltage Data ...................................................................... l-2
2-1
2-2
2-3
2-4
Resolution Selections.. ................................................................................... 2-21
Auto Resolution.. ............................................................................................ 2-21
Delay-by-Events Combinations.. .................................................................... 2-24
Sweep Triggering ........................................................................................... 2-29
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-6
2465Al2455Ai2445A
Electrical Characteristics ............................................
Option 01 (DMM) Electrical Characteristics.. ................................................
Option 05 (TV) Electrical Characteristics.. .....................................................
Option 06 ((X/T) Electrical Characteristics.. ................................................
Option 09 (WR) Electrical Characteristics .....................................................
Option 10 (GPIB) Electrical Characteristics.. .................................................
Mechanical Characteristics ............................................................................
Environmental Requirements.. .......................................................................
C-l
Confidence Test Numbers and Affected Functions.. ..................................... C-2
2465Al2455Al2445A
Operators
6-6
6-15
6-22
6-24
6-31
6-33
6-34
6-36
V
Operators
Safety Summary
The general safety information in this part of the summary is for both operating
servicing personnel. Specific warnings and cautions wilt be found
throughout the manual where they apply and do not appear in this summary.
and
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
personal injury or loss of life.
As Marked on Equipment
CAUTION indicates a personal injury hazard not immediately accessible as one
reads the markings, or a hazard to property, including the equipment itself.
DANGER indicates a personal injury hazard immediately accessible as one
reads the marking.
Symbols
In This Manual
A !
This symbol indicates where applicable cautionary or other
information is to be found. For maximum input voltage see Table 6-1.
As Marked on Equipment
DANGER-High
vi
voltage.
0f
Protective ground (earth) terminal.
A!
ATTENTION--Refer
to manual.
2465Al2455Al2445A
Operators
-
Operators
Ssfety Summ8ty
Power Source
This product is intended to operate from a power source that does not apply more
than 250 volts rms between the supply conductors or between either supply
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
connecting to the product input or output terminals. A protective ground
connection by way of the grounding conductor in the power cord is essential for
safe operation.
Danger Arising From 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 render an
electric shock.
Use the Proper Power Cord
Use only the power cord and connector specified for your product.
Use only a power cord that is in good condition.
For detailed information on power cords and connectors see Table l-l.
Use the Proper Fuse
To avoid fire hazard, use only a fuse of the correct type, voltage rating and current
rating as specified in the parts list for your product.
Do Not Operate
in Explosive
Atmospheres
To avoid explosion, do not operate this product in an explosive atmosphere unless
it has been specifically certified for such operation.
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 properly installed.
2465A/2455A/2445A
Operators
vii
The 2465A, 2455A, and 244544
The TEKTRONIX 2465A, 2455A, and 2445A portable oscilloscopes have four
vertical channels with DC to 350 MHz, 250 MHz, and 150 MHz bandwidths.
Deflection factors run from 2 mV to 5 V per division, in a l-2-5 sequence, with either
1 Mg or 50 Q input resistance, in channels 1 and 2. Either AC or DC input coupling is
available at 1 Mg. Channels 3 and 4 give 0.1 V or 0.5 V per division, with 1 MQ input
resistance, and DC coupling. With the standard 10X probes, channels 1 and 2 display
20 mV to 50 V/division and channels 3 and 4 display 1 V or 5 V/division.
The trigger systems work automatically for most signals. They operate in various
modes, from any channel, with couplings for a wide range of signals. The 2445A
triggers from DC to 250 MHz. The 2455A and 2465A trigger from DC to 500 MHz.
Sweep speeds range from 1.5 s to 1 ns per division on the 2445A and 2455A and
to 500 ps per division on the 2465A, including the effects of the X10 magnifier and the
calibrated variable between l-2-5 steps. Horizontal displays include A-Sweep, BSweep (delayed), A alternated with 6, and CH 1 (for X/Y displays).
The SETUP features, AUTO, SAVE, and RECALL, save time and prevent errors,
whether you are a novice operator or a master. AUTO Setup works with almost any
signal. For repeating measurements, the Save and Recall functions record and restore
as many as 30 instrument setups, including the extended-function options. Setups can
be recalled either immediately or sequentially.
Digital readouts of time, voltage, scale factors, trigger levels, and auxiliary
information also save time and reduce errors.
With the available Counter/Timer/Trigger
(Crr), Option 06 or Option 09,
measurements require even less effort and give better accuracy. The Cm increases
trigger selectivity, especially in digital systems. Option 09 includes the 07 and a
17-bit Word Recognizer (WR). The available Television/Video (N) enhancement,
Option 05, can trigger at any desired point in a frame and it can reduce the effects of
ac coupling and hum in a video signal. The available Digital Multimeter (DMM)
measures dc voltage, dc current, ac rms voltage, ac rms current, resistance, and
temperature with floating inputs.
Instruments with 07 include MENU in the Trigger Mode selection. The WR adds a
Word Recognizer Probe connector on the rear panel. The Nenhancement
adds
LINES, FLDl, and FLD2 Trigger Coupling.
The available GPIB interface accesses all controls and digital readings. The
interface adds GPIB status indicators, just above the CRT. See the 24X5A/2467 GPB
(Option
10) Instrument
Interfacing
Guide for information on integrating the instrument
into a GPIB system.
The 2465A CT includes CTT and W/? (Option 09) and GPIB (Option 10). The
2465A DM adds DMM (Option 01) and also includes 07 and WR (Option 09) and
GPIB (Option 10). The 2465A DV adds TV (Option 05) to the features of the 2465A
DM.
Illustrations at the back of the manual show the instrument front and rear panels.
2465Al2455Al2445A
Operators
ix
SECTION
1
General Information
2465N2455N2445A
Operators
General
Preparation
Information
for Use
Safety
Before connecting
the oscilloscope
to a power
source,
read entirely
both this
section
and the Safety
Summary
at the front of this manual.
Be sure you have the
training
required
to safely connect
the instrument
inputs to the signals you will be
measuring.
Refer to the Safety Summary
for power
source,
grounding,
and other
safety considerations
pertaining
to the use of the instrument.
This instrument
may be damaged
if operated
SELECTOR
switch
set for the wrong
applied
the wrong line fuse is installed.
with the LINE
VOLTAGE
ac input-source
voltage
or if
Line Voltage Selection
The oscilloscope
operates
from either a 115-V or a 230-V nominal
ac power-line
with any frequency
from 48 Hz to 440 Hz. Before connecting
the power cord to a
power
source,
verify that the LINE VOLTAGE
SELECTOR
switch,
located
on the
rear panel (see Figure l-l),
is set correctly
(see Table l-l) and that the line fuse is
correct.
To convert
the instrument
for operation
on the other line-voltage
range,
move the LINE VOLTAGE
SELECTOR
switch
to the correct
nominal ac sourcevoltage
setting.
The detachable
power cord may have to be replaced
to match the
particular
power source.
Line Fuse
To verify
1.
2.
the instrument
Press the fuse-holder
rotation.
Pull the cap
power-input
cap and release
(with the attached
Verify that the fuse is of the
Then install the proper
fuse
two types of fuses listed are
different
types of fuse caps.
fuse holder cap for use with
2465Al2455Al2445A
Operators
fuse
rating,
do the following
steps:
it with a slight counterclockwise
fuse inside) out of the fuse
type listed
and reinstall
not directly
Included
in
1.6 A, 250
holder.
on the back of the instrument.
the proper
fuse-holder
cap. The
interchangeable;
they require
the accessory
pouch is a 5x20 mm
V, 5x20 mm (IEC 127) fuses.
l-l