Tektronix 2465 User manual

Tektronix, Inc.
P.O. Box 500
Beaverton, Oregon 97077
070-3832-00
Product Group 38
COMMITTED TO EXCELLENCE
PLEASE CHECK FOR CHANGE INFORMATION
AT THE REAR OF THIS MANUAL.
OSCILLOSCOPE
OPERATORS
INSTRUCTION MANUAL
Serial Number
First Printing SEP 1982
Revised AUG 1985

Copyright @ 1982 Tektronix, Inc. All rights reserved.
Contents of this publication may not be reproduced in any
form without the written permission of Tektronix, Inc.
Productsof 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, Ins. TELEQU
l PMENT
is a registeredtrademark of Tektronix U.K. Limited.
Printed in U.S.A. Specificationand price change privileges
are reserved.
INSTRUMENT SERIAL NUMBERS
Each instrumenthas 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
manufactureis identified as follows:
BOO0000 Tektronix, Inc., Beaverton, Oregon, USA
1 00000 Tektronix Guernsey, Ltd., Channel Islands
200000 Tektronix United Kingdom, Ltd., London
300000 SonyITektronix, Japan
700000 Tektronix Holland,
NV, Heerenveen,
The Netherlands

Certificateof the Manufacturer/lmporter
We hereby certify that the
2465 OSCILLOSCOPE
AND ALL INSTALLEDOPTIONS
complies with the RF Interference Suppression requirements of Amtsbl.-Vfg 104611984.
The German Postal Service was notifiedthat the equipment is being marketed.
The German Postal Service has the right to re-test the series and to verify that it complies.
TEKTRONIX
Bescheinigungdes Herstellersllmporteurs
Hiermit wird bescheinigt, daA derldieldas
2465 OSCILLOSCOPE
AND ALL INSTALLEDOPTIONS
in ~bereinstimmungmit den Bestimmungender Amtsblatt-Verfugiing lO46Il984 funkentstort ist.
Der Deutschen Bundespost wurde das lnverkehrbringen dieses Gerates angezeigt und die
Berechtigung zur ijberprufung der Serie auf Einhaltender Bestimmungeneingeraumt.
TEKTRONIX
NOTICE to the userloperator:
The German Postal Service requires that Systems assembled by the operatorluser of this
instrument must also comply with Postal Regulation, Vfg. 104611984,Par.
2, Sect. 1.
HlNWElS fijr den BenutzerIBetreiber:
Die vom Betreiber zusammengestellte Anlage, innerhalb derer dies Gerat eingesazt wird, mu8
ebenfalls den Voraussetzungen nach Par. 2, Ziff. 1 der Vfg. 104611984 genugen.
NOTICE to the userloperator:
The German Postal Service requires that this equipment, when used in a test setup, may only be
operated if the requirementsof Postal Regulation,Vfg. 104611984, Par. 2, Sect. 1.7.1 are complied
with.
HlNWElS fijr den BenutzerIBetreiber:
Dies Gerat darf in MerSaufbauten nur betrieben werden, wenn die Voraussetzungen des Par.
2,
Ziff. 1.7.1 der Vfg. 104611984 eingehalten werden.

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2465 Operators
TABLE OF CONTENTS
Page Page
.................
LISTOF ILLUSTRATIONS ii SECTION 5 OPERATOR'S CHECKS AND
........................
LIST OF TABLES ii
...
............
OPERATORS SAFETY SUMMARY 111
SECTION 1 SPECIFICATION
INTRODUCTION ............. 1-1
PERFORMANCE CONDITIONS
... 1-1
SECTION 2
SECTION
3
SECTION 4
PREPARATION FOR USE
SAFETY ................... 2-1
LINE VOLTAGE SELECTION
.... 2-1
LINE FUSE
................. 2-1
POWER CORD
............... 2-1
INSTRUMENTCOOLING
....... 2-1
START.UP
.................. 2-2
REPACKAGING FORSHIPMENT
.. 2-2
CONTROLS. CONNECTORS.
AND INDICATORS
POWER AND DISPLAY ......... 3-1
VERTICAL
................. 3-2
HORIZONTAL AND DELTA
MEASUREMENT
............. 3-4
..................
TRIGGER 3-7
REARPANEL
............... 3-9
.......... READOUT DISPLAY 3-11
OPERATING CONSIDERATIONS
GRATICULE ................ 4-1
TIME AND VOLTAGE
............ MEASUREMENTS 4-1
............... GROUNDING 4-1
........ SIGNAL CONNECTIONS 4-2
INPUT-COUPLINGCAPACITOR
PRECHARGING
.............. 4-2
......
EXTERNALTRIGGERING 4-2
ADJUSTMENTS
............. INTRODUCTION 5-1
..............
INITIALSETUP 5-1
TRACE ROTATION
............... ADJUSTMENT 5-1
...
ASTIGMATISM ADJUSTMENT 5-2
AUTO DC BALANCE
............... ADJUSTMENT 5-2
PROBE LOW-FREQUENCY
.............
COMPENSATION 5-2
MATCHINGCHPrNNEL2DELAY
.. 5-3
.......... AMPLITUDE CHECK 5-4
..............
TIMINGCHECK 5-4
SECTION 6 BASICAPPLICATIONS
INDEX OF PROCEDURES ....... 6-1
..... VOLTAGE MEASUREMENT 6-1
VOLTAGE RATIO
............ 6-2
ALGEBRAIC ADDITION AND
ELIMINATING COMMON-MODE
SIGNALS
.................. 6-3
TIME INTERVAL
............. 6-4
FREOUENCY
............... 6-4
TlME DIFFERENCE BETWEEN
TWO TIME-RELATED PULSES
... 6-5
TIME RATIO
................ 6-5
PHASE DIFFERENCE BETWEEN
TWOTIME-RELATEDSIGNALS
. . 6-6
SMALL-ANGLEPHASE
DIFFERENCE
............... 6-6
DELAYED-SWEEPOPERATION
... 6-7
SECTION 7 OPTIONS AND ACCESSORIES
............. INTRODUCTION 7-1
................. OPTION 11 7-1
................. OPTION 1R 7-1
POWER CORD OPTIONS
........ 7-1
..... STANDARDACCESSORIES 7-2
OPTIONAL ACCESSORIES
...... 7-2
APPENDIX A POWER-UP TESTS
KERNELTESTS .............. A-I
CONFIDENCETESTS
.......... A-I
CHANGE INFORMATION

2465 Operators
LIST OF ILLUSTRATIONS
Figure Page
...............................................
The 2465 Oscilloscope iv
2-1 Line selector switch. line fuse. and detachablepower cord
........................ 2-2
............................................
3-1 Power and display controls 3-1
..........................
3-2 Vertical controls and CH 1OR
X and CH 2 connectors 3-2
3-3 Channel
3 and Channel 4 controls and connectorsand CALIBRATOR output ..........
3-3
.................................
3-4 Horizontal and delta measurementcontrols 3-4
..........................................
3-5 Trigger controls and indicators 3-7
.......................................
3-6 Rear-panelcontrols and connectors 3-10
.............................................
3-7 Readout display locations 3-11
........................................
4-1 Graticule measurement markings 4-1
.......................................
5- 1 Probe low-frequency compensation 5-3
Table
...............................................
Instantaneousdc levels 6-1
.....................................................
Voltage ratios 6-2
.......................................
Eliminating common-modesignals 6-3
.................................................
Measuringrise times 6-4
..................
Time difference betweentwo time-related pulses (cursormethod) 6-5
.............................................
Time ratios (dutycycles) 6-6
.............................
Phase difference betweentwo time-related signals 6-7
...........................................
Small-angle phase difference 6-7
Time difference betweentwo time-related pulses (delayed-sweepmethod)
............. 6-9
LIST OF TABLES
Page
..............................................
Electrical Characteristics 1-2
Environmental Characteristics
.......................................... 1-9
MechanicalCharacteristics
............................................. 1-10
Voltage. Fuse. and Power-Cord Data
......................................
2-3
Confidence Test Numbers and Descriptions
.................................
A-1

2465 Operators
OPERATORS SAFETY SUMMARY
The general safety information in this part of the summary is for both operating and servicing personnel. Specific warnings
andcautions willbe found throughout themanual wherethey apply and do not appear in thissummary.
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 inpersonal injury or loss of life.
Terms as Marked on Equipment
CAUTION indicates a personal injury hazard not imme-
diately accessible
as one reads the markings, or a hazard to
property, includingthe equipment itself.
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 1-1.
Symbols as Marked on Equipment
DANGER - High voltage.
@ Protectiveground (earth)terminal.
A ATTENTION - Refer to manual.
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 groundingconductor
of the power cord. To avoid electrical shock, plug the
power cord into
a properly wired receptable before con-
necting to the product input or output terminals. A
protective ground connection by way of the grounding
conductor inthe power cord
is essential for safe operation.
Danger Arising From Loss of Ground
Upon loss of the protective-groundconnection, all acces-
sible conductive parts (including knobs and controls that
may appear to be insulating)can render an electricshock.
Use the Proper Power Cord
Use only the power cord and connector specified for
your product.
Use only
a power cord that is ingood condition.
For detailed information on power cords and connectors
see Table
2-1.
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 NotOperate in Explosive Atmospheres
To avoid explosion, do not operate this product in an
explosive atmosphere unless
it has been specifically cer-
tified 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.
iii

2465 Operators
The 2465 Oscilloscope.
@

Section 1-2645 Operators
SPECIFICATION
INTRODUCTION
The TEKTRONIX 2465 Oscilloscope is a portable 300-
MHz instrument having a four-channel vertical deflection
system. Channel 1 and Channel 2 provide calibrated
deflectionfactors from 2 mV per division to 5 V per division.
For each of these channels, input impedance is selectable
between two values: either 1 MR in parallel with 15 pF, or
50R internal termination. Input-signal coupling with 1-MR
impedance can be selected as either AC or DC. Channel 3
and Channel 4 have deflection factors of either 0.1 V or
0.5 V per division. Each of these channels has an input
impedance of 1 MR in parallel with 15pF, with DC input-
signalcoupling.Trigger circuitsenable stable triggeringover
the full bandwidthof the vertical system.
The horizontal deflection system provides calibrated
sweepspeeds from 1.5 s per divisionto 500 ps per division.
Drivefor the horizontaldeflection system is obtained from a
choiceof A,
B delayed, A alternatedwith Bdelayed sweeps,
or CH 1 (for the X-Y display mode).
The 2465 incorporates alphanumeric crt readoutsof the
verticaland horizontalscale factors, the trigger levels, time-
difference measurement values, voltage-difference
measurement values, and certain auxiliary information.
The 2465 Oscilloscope is shipped with the following
standard accessories:
Probe packages
Snap-lock accessories pouch
Zip-lock accessories pouch
Operators manual
Power cord(installed)
2-A, 250-V fuse
Clear plastic crt filter
Blue plastic crt filter (installed)
Front-panelcover
Operators pocket referencecard
For part numbers and further information about both
standard and optional accessories, refer to the "Options
and Accessoriesnsection (Section
7) of this manual. Your
Tektronix representative, local Tektronix Field Office, or
Tektronix product catalog can also provide accessories
information.
PERFORMANCE CONDITIONS
The following electrical characteristics (Table 1-1) are
valid for the 2465 when it has been adjusted at an ambient
temperaturebetween
+ 20°C and +30°C, has hadawarm-
up period of at least 20 minutes, and is operating at an
ambient temperature between
- 15 O C and + 55 O C (unless
otherwisenoted).
Items listed in the "Performance Requirements" column
are verifiablequalitativeor quantitativelimitsthat definethe
measurement capabilities of the instrument.
Environmentalcharacteristicsare given in Table 1-2. The
2465 Oscilloscopemeetsthe environmentalrequirementsof
MIL-T-28800Cfor Type
Ill, Class 3, StyleCequipment, with
the humidity and temperature requirements defined in
paragraphs 3.9.2.2, 3.9.2.3, and 3.9.2.4.
Mechanical characteristics of the 2465 are listed in
Table 1-3.
REV AUG 1985

Specification-2465 Operators
Table 1-1
Electrical Characteristics
VERTICAL DEFLECTION SYSTEM-CHANNEL
1 AND CHANNEL 2
Characteristics
DeftectEn Factor
Range
Performance Requirements
2 mVper division to 5 V per division in a 1-2-5sequence of 11steps.
Accuracy
+I 5" c to +35O c
Within _+2% at any VOLTSIDIV setting for a 4- or 5-division signal
centered on the screen.
-15°C to +15"C and +35"C to +55"C Add 1
% to + 1 5 O C-to- + 35 O C specification.
AV Accuracy (usingcursors over entire
graticulearea)
+I 5°C to +35OC
+ (1.25%of reading + 0.03 division + signal aberration).
-1 5"
c to +I 5" c and +35" c to +55" c
Add 1 % of reading to +I 5°~-to-+350~specification.
AV Range
---
+ 8 times the VOLTSIDIV switch setting.
Variable Range Continuously variable between VOLTSIDIV switch settings. Extends
deflection factor of the 5 V per division settingtoat least 12.5 V
per division.
Frequency Response
-1 5'~to +55"~ 2 mV
I DCto 100 MHz I DCto 100 MHz
Six-division reference signal from
a terminated 504 system, with
VAR VOLTSIDIV control in calibrated detent.
VOLTSIDIV
setting
AC Coupled Lower -3 dB Point
1 X Probe
5 mV or greater
5 mV or greater
10
Hz or less.
-3 dB bandwidth
with standard-accessory
probe or internal
50-SZ termination
1OX Probe
-4.7 dB bandwidth
with 50-SZ external
termination on
1-MO input
DCto 300 MHz
DC to 250
MHz
1 Hz or less.
- - --
DC to 300 MHz
DC to 250 MHz
Step Response
Rise Time 1.17 ns or
less for VOLTSIDIV switch settings of 5 mV and up
(calculated).
3.5 ns or less for VOLTSIDIV switch setting of 2 mV (calculated).
.Risetime calculated from: bandwidth x rise time
= 0.35.
Common-modeRejection Ratio (CMRR) At least 20:1 at 50 MHz for common-mode signals of eight divisions
or less, with VAR VOLTSIDIV control adjustedfor best CMRR at 50
kHz at VOLTSIDIV switch settingsfrom 5 mV to 5 V. At least 20:1 at
20 MHz for the 2 mV switch setting.
REV JAN 1984

Specification-2465 Operators
Channel Isolation
Table 1-1 (cont)
Displayed Channel 2 Signal Delay with Respect to
Channel
1 Signal
Characteristics
lnput R and C (1 MQ)
PerformanceRequirements
Resistance
VERTICAL DEFLECTIONSYSTEM-CHANNEL 1 AND CHANNEL 2 (cont)
Capacitance
Maximum lnput Voltage
A
lnput R (50 Q)
Resistance
VSWR (DC to
300 MHz)
Maximum lnput Votlage
(DC Coupling Only)
A
Cascaded Operation
Bandwidth
Deflection Factor
100:l or greater attenuation of the deselected channel at 100 MHz;
50:1 or greater attenuation at 300 MHz, for an eight-divisioninput signal
from
2 mV per division to 500 mV per division, with equal VOLTS/DIV
switch settings on both channels.
Adjustable through a range of at least
-500 ps to +500 ps.
400 V (dc + peak ac). 800 V p-p ac at 10 kHz or less.
1.3:1 or less.
5 V rms; 0.5 W-seconds during any 1-s interval for instantaneous
voltage from
5 V to 50 V.
Maximum pulse duty factor and maximum pulse duration for a one
second interval that produce
0.5 W-seconds into 50 Q input with a 5 V
rms maximum allowable input voltage are determined from the
following:
Maximum duty factor of applied pulse
= -
( :p:l-
Maximum duration of applied pulse = (57 sec.
V,u,se
CH
2 SIGNAL OUT into Channel 1 input; DC coupled using a 504 RG-
58C/U coaxial cable, terminated in 50 Q at the Channel 1 input.
Channel
1 and Channel 2 VOLTS/DIV switch set to 2 mV.
Dc to
50 MHz or greater
400 pV per division 2 10%.
VERTICAL DEFLECTIONSYSTEM-CHANNEL 3 AND CHANNEL 4
Deflection
Values
REV SEP 1984
0.1 V per division and 0.5 V per division.
Accuracy Within
-t- 10%.

Specification-2465 Operators
Table 1-1 (cont)
VERTICAL DEFLECTIONSYSTEM-CHANNEL 3 AND CHANNEL 4 (cont)
Characteristics
Frequency Response (3-dB Bandwidth)
-15°C to +35"C
Performance Requirements
Step Response
Rise Time
Channel Isolation
lnput R and C
Resistance
Capacitance
Maximum lnput Voltage
A
Six-divisionreferencesignal, from a terminated 504system.
1.17ns or less (calculatedfrom bandwidth).
-3 dB Bandwidth
Nith standard-accessory probe
DC to 300 MHz
DC to 250 MHz
50:1 or greater attenuation of the deselected channel at 100 MHz with
-4.7 dB Bandwidth
With external
50-0 termination
DC to 300 MHz
DC to 250 MHz
an eight-division input signal.
400 V (dc
+ peak ac);
800 V
D-D ac at 10kHz or less.
VERTICAL DEFLECTION SYSTEM-ALL CHANNELS
Vertical Signal Delay
Low-frequency Linearity
Bandwidth Limiter
At least 20 ns of the sweep is displayed before the triggering event is
displayed.
0.1 division or less compression or expansion of a two-division, center-
screen signal when positionedanywherewithin the graticule area.
Reduces upper 3-dB bandpass to a limit of 13 MHz to 24 MHz.
Chopped Mode Switching Rate Vertical display switches sequentially through the selected channels at
the chop switchingrate. If the B SECIDIV switch is set to sweep speeds
outsidethe rangeof 20 ps per division to
2 ps per division, the switching
rate is 1 MHz +0.2% (dual-channel cycle rate of 500 kHz). If the
B
SECIDIV switch is set within the range of 20 ps per division to 2 ps per
division, the switching rate is 2.5 MHz +0.2% (dual-channelcycle rate
of 1.25 MHz). At all sweep speeds, the chop switching rate is
desynchronizedwith the sweepfrequency to minimize waveform breaks
when viewing repetitivesignals.
TRIGGERING
- -
Minimum P-P Signal Amplitude for Stable
Triggering from Channel 1 or Channel 2 Source
DC Coupled 0.35 division from dc to 50 MHz, increasing to 1 division at 300 MHz,
1.5 divisions at 500 MHz in ADD MODE.
NOISE REJ Coupled 1.2 divisions or less from dc to 50 MHz, increasing to 3 divisions at
300 MHz, 4.5 divisions at 500 MHz in ADD MODE.
AC Coupled 0.35 divisionfrom 60 Hz to 50 MHz, increasingto 1division at 300 MHz,
1.5 divisions at 500 MHz in ADD MODE. Attenuates signals below
60 Hz.
REV SEP 1984

Specification-2465 Operators
Table
1-1 (cont)
Characteristics
I Performance Requirements
TRIGGERING (cont)
0.5 division from dc to 30 kHz.
HF REJ Coupled
LF REJ Coupled 0.5 divisionfrom 80 kHz to50 MHz, increasingto 1 divisionat 300 MHz,
1.5 divisions at 500 MHz in ADD MODE.
Amplitudesare one-half of Channel 1 or Channel
2 source specification.
Minimum P-P Signal Amplitude for Stable
Triggering from Channel 3 or Channel4 Source
Add 1 division to single-channelsource specifications.
Minimum P-P Signal Amplitude for Stable
Triggering from Composite, Multiple Channel
Source in ALT Vertical Mode
Maximum P-P Signal Rejected by NOISE REJ
COUPLING for Signals Within the Vertical
Bandwidth
Channel 1 or Channel 2 Source 0.4 division or greater for VOLTSIDIV switch settings of 10mV and
higher.
Channel 3 or Channel
4 Source 0.2 division or greater.
Jitter Less than 50 ps at 300 MHz with A and B SECIDIV switch set to 5 ns,
XI0 MAG on, and 5 divisions of amplitude.
LEVEL Control Range
Channel
1 or Channel 2 Source
+ 18times the VOLTSIDIV switch setting.
Channel 3 or Channel
4 Source
+ 9 times the VOLTSIDIV switch setting.
LEVEL Control Readout Accuracy (for triggering
signals with transition times greater than 20 ns)
Channel 1 or Channel
2 Source
DC Coupled
+15"C to +35OC Within
+ [3% of setting + 3% of p-p signal + 0.2 division + 0.5 mV
(0.5 mV x probe attenuation factor)].
-15°C to +55"C
(excluding
+ 15°Cto +35OC) Add (1.5 mV x probe attenuation factor) to the specification listed for
+15"C to +35"C.
NOISE REJ Coupled Add
+ 0.6 division to the DC Coupledspecification.
Channel 3 or Channel
4 Source Within
+ [3% of setting + 4% of p-p signal + 0.1 division + (0.5 mV x
probe attenuation factor)].
Conforms to trigger-sourcewaveform or ac power-sourcewaveform.
SLOPE Selection
AUTO LVL Mode Maximum Triggering Signal
Period
A SECIDIV Switch Setting Less than 10ms At least 20 ms.
- -
A SECIDIV Switch Setting
from 10ms to 50 ms At least four times the A SECIDIV switch setting.
A SECIDIV Switch Setting
from 100ms to 500 ms At least 200 ms.
REV SEP 1984

Specification-2465 Operators
Table 1-1 (cont)
AUTO Mode Maximum Triggering Signal Period
Characteristics
A SECIDIV Switch Setting Less than 10ms
I At least 80 msm
Performance Requirements
TRIGGERING (cont)
A SECIDIV Switch Setting
from 100ms to 500 ms
A SECIDIV Switch Settingfrom 10msto50 ms
At least 800 ms.
At least 16 times the A SECIDIV switch setting.
I
AUTO LVL ModeTrigger Acquisition Time
I Eight to 100 times the AUTO LVL Mode maximum triggering-signal
- -
1 period, depending on the triggering-signal period and waveform.
HORIZONTAL DEFLECTIONSYSTEM
SECIDIV VAR Control
A Sweep Time Base Range
B Sweep Time Base Range
Continuously variable and calibrated between settings of the SECIDIV
switch. Extendsslowest A Sweep speed to 1.5 s per division. Operates
in conjunction with the A SECIDIV switch when A and
B are locked
together; operates in conjunction with the
B SECIDIV switch when A
and B are not locked together.
0.5 s per division to 5 ns per division in a 1-2-5 sequence of 25 steps.
XI0 MAGfeatureextendsmaximumsweepspeedto 0.5 ns perdivision.
50 ms per division to 5 ns per division in a 1-2-5 sequence of 22 steps.
XI0 MAGfeatureextendsmaximumsweepspeedto 0.5 ns perdivision.
Timing Accuracy (+15OC to +35OC, SECIDIV
switch set to 0.1 s per divisionor less)
A and
B Sweep Accuracy, Time Intervals
Unmagnified
Measuredat Vertical Center with SECIDIV
VAR Control in Detent
2 (0.7% of time interval
+0.6% of full scale).
Magnified
2 (1.2% of time interval
+0.6% of full scale).
-
0.6% of full scale is 0.06 division.
At Accuracy, Time Intervals Measuredwith
Unmagnified
Cursors, Anywhere on the Graticule
(A Sweep Only)
+ (0.5% of time interval
+0.3% of full scale).
Magnified
+ (1 % of time interval
+0.3% of full scale).
At Accuracy, Time IntervalsMeasured with
Delayed
B Sweep with Both Delays Set at 1%
or More of Full Scale from Minimum Delay
(no
? displayed in readout)
k (0.3% of time interval +0.l0/0 of full scale).
Delay Accuracy, A SweepTrigger Point to Start
of B Sweep
+ (0.3% of delay setting + 0.6% of full scale) -25 ns.
Timing Accuracy (A SECIDIV switch set to 0.5 s or
0.2 s per division)
REV SEP 1984
Add k 0.5% of time intervalto accuracy specifications.
Timing Accuracy (SECIDIV VAR control out of
detent) Add 2% of time intervalto the A and
B Sweep Accuracy specification.

Specification-2465 Operators
Table 1-1 (cont)
Timing Accuracy (-1 5°C to + l5OC and +35OC
to +55OC)
Characteristics
At Readout Resolution
Performance Requirements
At Range
HORIZONTAL DEFLECTION SYSTEM (cont)
Delay Pickoff Jitter
Delay Time Position Range
X-Y Operation
X-Axis Deflection Factor
Range
Accuracy
Variable Range
X-Axis Bandwidth
lnput R and
C
Phase DifferenceBetweenX and Y with Normal
Bandwidth
X-Axis Low-Frequency Linearity
Add
+0.2% of time interval to all At and delay specifications. Add
20.5% of time interval to A and B Sweep accuracy specifications.
Greater of either
10 ps or 0.025% of full scale.
+_ 10 times the A SECIDIV switch setting.
Within
0.004% (one part or less in 25,000) of the maximum available
delay, plus
100 ps.
0 to 9.95 times the A SECIDIV switch setting. Main sweep triggering
event is observableon delayed sweep with zero delay setting.
Same as Channel
1
Same as Channel 1.
Same as Channel 1.
Dc to 3 MHz.
Same as Channel
1.
1
O or less from dc to 1 MHz;
3" or less from 1 MHz to 2 MHz.
0.2 division or less compression or expansion of two-division, center-
screen signal when positionedwithin the display area.
CURSOR AND FRONT-PANELDISPLAY
Cursor Position Range
Delta Volts (AV) At least the
7.6 vertical divisions.
Delta Time (At)
I At least the center 9.6 horizontal divisions.
Minimum Setup Time Required to Maintain Front-
panel Settings at Power-down
10 seconds or less.
Z-AXIS INPUT
Sensitivity Positivevoltage decreases intensity. Fromdc to
2 MHz, +2 V blanks a
maximum-intensity trace; from
2 MHz to 20 MHz, +2 V modulates a
normal-intensitytrace.
Input Resistance
1 9 kR t 1O0/0.
Maximum Input Voltage A
1 k25 V peak; 25 V p-p ac at 10 kHz or less.
REV SEP 1984

Specification-2465 Operators
Table
1-1 (cont)
Characteristics
CALIBRATOR
Output Voltage and Current
Repetition Period
Accuracy
Symmetry
Jitter of Pulse Periodor Pulse Width
CH
2 SIGNAL OUT
Output Voltage
Offset
A GATE OUT and
B GATE OUT
Output Voltage
Output Drive
Performance Requirements
SIGNAL OUTPUTS
0.4 V t- 1% into a I-MQ load, 0.2 V k 1.5% into a 504 load, or 8 mA
k 1.5% into a short circuit, with the A SECIDIV switch set to I ms per
division.
Two times the A SECIDIV switch setting within the range of
200 ns to
200 ms.
t- 0.1% measuredwith SGL SEQ A TRIGGER MODE selected.
Duration of high portion of output cycle is
50% of output period
k (lesserof 500 ns or 25% of period).
10 ns or less.
20 mV per division ~t_ 10% into 1 MQ;
10 mV per division k 10% into 50Q.
k 10 mV into 50 Q, when dc balance has been performedwithin -+ 5°C
of the operatingtemperature.
2.4 V to 5 V positive-goingpulse, starting at 0 V to 0.4 V.
Will supply 400 PA during HI state; will sink 2 mA during LO state.
CRT
Source Voltage
Display
Standard Phosphor
Nominal Accelerating Potential
Ranges
80 mm x 100 mm.
P31.
16 kV.
230 V
Source Frequency
Fuse Rating
AC POWER SOURCE
Power Consumption
Typical
Maximum
Primary Circuit DielectricVoltage Withstand Test
Primary Grounding
- -- -
48 Hz to 440 Hz.
2 A; 250 V, AGC/3AG, Fast blow;
or
1.6 A, 250 V, 5 x 20 mm, Quick-acting (F).
70 W (140 VA).
120 W (I80 VA).
1500 V rms, 60 Hz for 10 s without breakdown.
Type test to
0.1 Q maximum. Routinetest to check grounding continuity
betweenchassis ground and protectiveearth ground.
REV SEP 1984

Specification-2465 Operators
Table
1-2
Environmental Characteristics
The 2465 Oscilloscope meets the environmental requirements of MIL-T-
28800C for Type Ill, Class 3, Style C equipment, with the humidity and
temperature requirements defined in paragraphs 3.9.2.2, 3.9.2.3, and
3.9.2.4.
Characteristics
Temperature
Performance Requirements
Operating
Nonoperating (storage)
I To 50,000 ft.
Nonoperating (storage)
Altitude
Operating
-62°C to +85"C.
To 15,000ft. Maximum operating temperature decreases 1"Cfor each
1,000 ft above 5,000 ft.
Vibration (operating)
Humidity (operatingand nonoperating)
15 minutes along each of three axes at a total displacement of 0.025
inch p-p (4 g at 55 Hz), with frequency varied from 10Hz to 55 Hz in
one-minute sweeps. Held 10 minutes at each major resonance, of if
none existed, held 10 minutes at 55 Hz (75 minutes total test time).
Stored at 95% relativehumidity for five cycles (120 hours)from 30°Cto
60
O C, with operational performancechecks at 30"C and 55 " C.
- -
Shock (operatingand nonoperating)
50 b, halfsine, I I-rnsduration, three shocks oneachface, for a total of
18 shocks.
Transit Drop (not in shipping package)
-- -
EM1 (electromagnetic interference)
12-inchdrop on each corner and eachface (MIL-T-28800C,para 3.9.5.2
and 4.5.5.4.2).
BenchHandling(with and without cabinet installed)
Meets MIL-T-28800C; MIL-STD-461B, part 4 (CE-03and CS-02),part 5
(CS-06 and RS-02), and part
7 (CS-01, RE-02, and RE-03-limited to
1
GHz); VDE 0871 , Catagory 8; Part 1 5 of FCC Rules and Regulations,
Sub~art
J, Class A; and Tektronix Standard 062-2866-00.
MIL-STD-81OC, Method 516.2, Procedure
V (MIL-T-28800C, para
4.5.5.4.3).
PackagedTransportation Drop
Topple (operatingwith cabinet installed)
Meetsthe limitsof the NationalSafe Transit Association test procedure
1A-B-2; 10 drops of 36 inches (Tektronix Standard 062-2858-00).
Set on rear feet and allowed to topple over onto each of four adjacent
faces (Tektronix Standard 062-2858-00).
REV SEP 1984
PackagedTransportationVibration Meets the limits of the NationalSafe Transit Association test procedure
1A-B-1; excursion of 1 inch p-p at 4.63 Hz (1.1 g) for 30 minutes
(Tektronix Standard 062-2858-00).

Specification-2465 Operators
Table 1-3
hlechanical Characteristics
Characteristics
Weight
With Accessories and Pouch
Without Accessories and Pouch
DomesticShippingWeight
Height
With Feet and Accessories Pouch
- Without Accessories Pouch
Width (withhandle)
Depth
With Front-PanelCover
With Handle Extended
Cooling
Finish
Construction
Description
10.2 kg (22.4 Ib).
9.3 kg (20.5 Ib).
- - -
190mm (7.5 in).
160 mm (6.3 in).
330 mm (13.0 in).
434 mm (17.1 in).
505 mm (19.9 in).
Forced-aircirculation.
Tektronix Bluevinyl-clad material on aluminum cabinet.
Aluminum-alloy chassis (sheet metal). Die-castaluminum front
panel. Glass-laminatecircuit boards.

Section 2-2465 Operators
PREPARATION FOR USE
SAFETY
This section tells how to prepare for and to proceed
with the initial start-up of the TEKTRONIX 2465
Oscilloscope.
Refer to the Safety Summary at the front of this manual
for power source, grounding, and other safety consider-
ations pertaining to the use of the instrument. Beforecon-
necting the oscilloscope to
a power source, read entirely
both this section and the Safety Summary.
CAUTION
D
This instrument may be damaged if operated with
the LINE VOLTAGE SELECTOR switch set for the
wrong applied ac input-source voltage or if the
wrong line fuse is installed.
LINE VOLTAGE SELECTION
The 2465 operates from either a 115-V or a 230-V
nominal ac power-input source having line frequency
ranging from 48
Hz to 440 Hz. Before connecting the
power cord to
a power-input source, verify that the LINE
VOLTAGE SELECTOR switch, located on the rear panel
2. Pull the cap (with the attached fuse inside) out of
the fuse holder.
3. Verify proper fuse value (see Table 2-1).
4. Install the proper fuse and reinstall the fuse-holder
cap.
NOTE
The two types of fuses listed are not directly inter-
changeable; they require different types of fuse caps.
POWER CORD
This instrument has a detachable, three-wirepower cord
with
a three-contact plug for connection to both the power
source and protective ground. The power cord
is secured to
the rear panel by
a cord-set-securingclamp. The protective-
ground contact on the plug connects (through the power-
cord protective grounding conductor) to the accessible
metal parts of the instrument. For electrical-shock pro-
tection, insert this plug into
a power-sourceoutlet that has
a properly grounded protective-ground contact.
(see Figure 2-I),
is set for the correct nominal ac input- Instruments are shipped with the required power cord
Source voltage. To convert the
instrument for operation as orderedby the customer.Availablepower-cord
informa-
from one line-~~Itagerange to the other, move the LINE
tion is presented in Table2-1, and part numbersare listed
VOLTAGE SELECTOR switch to the correct nominal
in uOptions and Accessories~l (Section 7). Contact your
ac source-voltage setting (see Table 2- 1). The detachable
Tektronix representative or local Tektronix Field Office
power cord may have to be changed to match the particular
for additional power-cord information.
power-source output.
LINE FUSE INSTRUMENT COOLING
To verify that the instrument power-input fuse is of To prevent instrument damage from overheated com-
proper value for the nominal ac source voltage selected, ponents, adequate internal airflow must be maintained
at
perform the following procedure: all times. Before turning on the power, first verify that both
the air-intake holes on the bottom of the cabinet and the
1. Press in the fuse-holder cap and release
it with a fan-exhaust holes in the rear panel are free of any obstruc-
slight counterclockwise rotation. tion to airflow.

Preparation for Use-2465 Operators
Figure 2-1. Line selector switch, line fuse, and detachable power cord.
START-UP
The 2465 automatically performs power-up tests each
time the instrument
is turned on. The purpose of these
tests is to provide the user with the highest possible con-
fidence level that the instrument
is fully functional. If no
faults are encountered, the power-up tests normally will be
completed in under five seconds, after which the instru-
ment will enter the normal operating mode. A failure of
any of the power-up tests will be indicated by either a
flashing TR IG'D indicator on the instrumentfront panel or
a bottom-line readout on the crt in the form: TEST XX
FAIL YY (where XX is the test number and YY is the
failure code of the failed test).
If
a failure of any power-up test occurs, the instrument
may still be usable for some applications. To put the
instrument into the operating mode after a power-up test
failure, press the A/B TRIG button. Ifthe instrument then
functions for your particular measurement requirement,
it
may be used, but refer it to a qualified service technician
for repair of the problem
at the earliest convenience.
Additional information on the power-up
tests may be
found in Appendix A
at the rear of this manual. Consult
your service department, your local Tektronix Service
Center, or nearest Tektronix representative if additional
assistance
is needed.
REPACKAGING FOR SHIPMENT
If this instrument is to be shipped by commercial
transportation,
it is recommended that it be packaged in
the original manner. The carton and packaging material in
which your instrument was shippedto you should be saved
and used for this purpose.
If the original packaging
is unfit for use or is not avail-
able, repackagethe instrument
as follows:
1. Obtain a corrugated cardboard shipping carton
having inside dimensions
at least six inches greater
than the instrument dimensions and having
a carton
test strength of at least 275 pounds.
2. If the instrument is to be shipped to a Tektronix
Service Center for service or repair, attach
a tag to
the instrument showing the following: owner of the
instrument (with address), the name of
a person at
your firm who can be contacted, complete instru-
ment type and serial number, and
a description of the
service required.