Tektronix 2465 User manual

Tektronix, Inc.
P.O. Box 500
Beaverton, Oregon 97077
070-3832-00
Product Group 38
Tektronix
COMMITTED TO EXCELLENCE
PLEASE CHECK FOR CHANGE INFORMATION
AT THE REAR OF THIS MANUAL.
2465
OSCILLOSCOPE
OPERATORS
INSTRUCTION MANUAL
Serial Number
First Printing SEP 1982
Revised JAN 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.
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 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 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:
BO00000 ‘Tektronix, Inc., Beaverton, Oregon, USA
100000 Tektronix Guernsey, Ltd., Channel Islands
200000 Tektronix United Kingdom, Ltd., London
300000 Sony/Tektronix, Japan
700000 Tektronix Holland, NV, Heerenveen,
The Netherlands

2465 Operators
TABLE OF CONTENTS
Page Page
LIST OF ILLUSTRATIONS................. i SECTION 5 OPERATOR’S CHECKS AND
LIST OF TABLES.............0.000000 005 i ADLISTMENTS
INTRODUCTION. ............ 5-1
OPERATORS SAFETY SUMMARY............ iii INITIALSETUP.............. 5-4
TRACE ROTATION
ADJUSTMENT. ...........00- 5-1
ASTIGMATISM ADJUSTMENT ... 5-2
SECTION 1 SPECIFICATION AUTO DC BALANCE
INTRODUCTION. ............ 11 ADJUSTMENT............... 5-2
PERFORMANCE CONDITIONS... 1-1 PROBE LOW-FREQUENCY
COMPENSATION............. 5-2
MATCHING CHANNEL 2 DELAY... 5-3
AMPLITUDE CHECK ........... 5-4
SECTION 2 PREPARATION FOR USE TIMING CHECK. ............. 5-4
SAFETY... 0.0.0 cece eee eee 2-1
LINE VOLTAGE SELECTION.... 2-1 SECTION 6 BASIC APPLICATIONS
LINEFUSE.............000. 24 INDEX OF PROCEDURES....... 6-1
POWERCORD............... 24 VOLTAGE MEASUREMENT ..... 6-1
INSTRUMENT COOLING ....... 3. VOLTAGE RATIO............ 6-2
START-UP. ...... 000 c eee eee 22 ALGEBRAIC ADDITION AND
REPACKAGING FOR SHIPMENT... 2-2 ELIMINATING COMMON-MODE
SIGNALS ....... 00.0 eee eee 6-3
TIME INTERVAL. ...........- 6-4
FREQUENCY ............... 6-4
TIME DIFFERENCE BETWEEN
SECTION 3 CONTROLS, CONNECTORS, TWO TIME-RELATED PULSES... 65
AND INDICATORS TIME RATIO..........-0000. 6-5
POWER AND DISPLAY......... 3-1
PHASE DIFFERENCE BETWEEN
VERTICAL... 0.0.0.0 cece eee Sa eWe TIME RELATEDEIGNAGS Lo. en
MEASUE GHENT.“ cal .. oes SMALL-ANGLE PHASE
TRIGGER. ....... 0... ce eee 3-7 BRPRBISIG Es? to etod shag ae aa
REAR PANEL.............0- 3-9 RECO ECT ORG e ie sane ot
BEAROMIL DISPLAY: 5 sn mie 7g Poy SECTION 7 OPTIONS AND ACCESSORIES
INTRODUCTION. ............ 7-1
PRION Tit ee ey ee 7-1
OPTION TA. cc bub owl ee ee 7-4
SECTION 4 OPERATING CONSIDERATIONS POWER CORD OPTIONS........ 7-1
GRATICULE..............-. 4-1 STANDARD ACCESSORIES ..... 22
TIME AND VOLTAGE OPTIONAL ACCESSORIES...... 72
MEASUREMENTS............ 4-1
GROUNDING .............0- 4-1 APPENDIX A POWER-UP TESTS
SIGNAL CONNECTIONS........ 4-2 KERNEL TESTS.............. A-1
INPUT-COUPLING CAPACITOR CONFIDENCE TESTS.......... A-1
PRECHARGING.............. 4-2
EXTERNAL TRIGGERING...... 4-2 CHANGE INFORMATION

2465 Operators
Figure
2-1
3-1
3-2
3-3
3-4
3-5
3-6
3-7
4-1
5-1
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
Table
1-1
1-2
1-3
2-1
A-1
LIST OF ILLUSTRATIONS
Page
Whe:24G5;Oscilloscoperyse.. ea kd ew we 6 6 a Mme we oo See MMR Gow w MSL and Seas wont iv
Line selector switch, line fuse, and detachable power cord...........0 000 eee ueae 2-2
Power-and display COntrols: . occu) oe haces ee eR a ee Sw bos DES Se Ee ace 3-1
Vertical controls and CH 1OR X and CH 2connectors.......... 0.000 eee eee eee 3-2
Channel 3 and Channel 4 controls and connectors and CALIBRATOR output .......... 3-3
Horizontal and delta measurement controls ..... 0.0... eee ee ee ee 3-4
Trigger controls and indicators... 2... ee eee ee eee 3-7
Rear-panel controls and connectors... 2... ee ee ee et eee ee 3-10
Readoutidisplay IOCations.. . . 5c es os Seas 6 6 wee 6 Oe OR oo Fw RS eS rele 3-11
Graticule measurement markings ...... 0.0.0.0. cc eee ee eee eee ee ee eee anne 4-1
Probe low-frequency compensation. ........ 000. eee ee ee ee eee eee eee eee 5-3
Instantaneous dc levels... ee ete eee ee eee 6-1
Voltageratios... 00... . tece el ec ce ees 6 9 wine's 0 8 UNE Soe Ewa EC a WUE S Iw oR a HRS 6-2
Eliminating common-mode'signals ..4:.. ccc a os tee eee SH ED HoT eo ee 6-3
Measuring Wise: tUMOS: acre eo «ie ew oe PR FS ewe Ae w wile eee 2 ome allay lee sice 6-4
Time difference between two time-related pulses (cursor method) ..............0008 6-5
Time ratios (duty cycles) .... ce ee ee ee eee eee ee ee ee ae 6-6
Phase difference between two time-related signals... .. 2.0... 0. eee ee ee ee eee 6-7
Small-angle phase difference .... 0... eee 6-7
Time difference between two time-related pulses (delayed-sweep method)............. 6-9
Page
Electrical Gharacteristicss. <6 4 see baie & HS lee Si aewe Be BR BAS we ws wes 1-2
EnvironmentaliGharacteristics. os sestane ooo has haters & BGS we eb ww wee © oe ww ewe wb 1-9
Mechanical: Criaractenistics: 4 as) o Sees ses ae ce See bw wwe ees oe 1-10
Voltage, Fuse, and Power-Cord Data... 1... . cc ee eens 2-3
Confidence Test Numbers and Descriptions ......... 0.0.0.0 ee eee ee eee ee eee 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
and cautions will be found throughout the manual where they apply and do not appear in this summary.
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.
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,
including the equipment itself.
DANGER indicates a personal injury hazard immediately
accessible as one reads the marking.
Symbols in This Manual
This symbol indicates where applicable
Z\ cautionary or other information is to be
found. For maximum input voltage see
Table 1-1.
Symbols as Marked on Equipment
& DANGER — High voltage.
i) Protective ground (earth) terminal.
PAN 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 grounding conductor
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 in the power cord is essential for safe operation.
Danger Arising From Loss of Ground
Upon loss of the protective-ground connection, all acces-
sible 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 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 Not Operate 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.

2465 Operators
Tektronix 2485 sos cscuscscon
The 2465 Oscilloscope.
3832-01

—
Section 1—2465 Operators
SPECIFICATION
INTRODUCTION
The TEKTRONIX 2465 Oscilloscope is a portable
300-MHz instrument having a four-channel vertical deflec-
tion system. Channel 1 and Channel 2 provide calibrated
deflection factors from 2mV per division to 5V per
division. For each of these channels, input impedance is
selectable between two values: either 1 MQ in parallel
with 15 pF, or 502 internal termination. Input-signal
coupling with 1-MQ 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 MQ in parallel with 15 pF,
with DC input-signal coupling. Trigger circuits enable stable
triggering over the full bandwidth of the vertical system.
The horizontal deflection system provides calibrated
sweep speeds from 1.5s per division to 500 ps per division.
Drive for the horizontal deflection system is obtained from
a choice of A, B delayed, A alternated with B delayed
sweeps, or CH 1 (for the X-Y display mode).
The 2465 incorporates alphanumeric crt readouts of the
vertical and horizontal scale 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-panel cover
Operators pocket reference card
we
ek
ees
as
ND
For part numbers and further information about both
standard and optional accessories, refer to “Options and
Accessories’’ (Section 7) of this manual. Your Tektronix
representative or local Tektronix Field Office can also
provide accessories information and ordering assistance.
PERFORMANCE CONDITIONS
The following electrical characteristics (Table 1-1)
are valid for the 2465 when it has been adjusted at an
ambient temperature between +20°C and +30°C, has had
a warm-up period of at least 20 minutes, and is operating
at an ambient temperature between —15°C and +55°C
(unless otherwise noted).
Items listed in the ‘Performance Requirements” column
are verifiable qualitative or quantitative limits that define
the
measurement capabilities of the instrument.
Environmental characteristics are given in Table 1-2.
The 2465 Oscilloscope meets the environmental require-
ments of MIL-T-28800C for Type III, Class 3, Style C
equipment, with the humidity and temperature require-
ments 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.
1-1

Specification—2465 Operators
Table 1-1
Electrical Characteristics
Characteristics Performance Requirements
VERTICAL DEFLECTION SYSTEM—CHANNEL 1 AND CHANNEL 2
Deflection Factor
Range 2 mV per division to 5 V per division in a 1-2-5 sequence of 11 steps.
Accuracy
+15°C to +35°C
Within +2% at any VOLTS/DIV 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 +15°C-to-+35°C specification.
AV Accuracy (using cursors over entire
graticule area)
+15°C to +35°C + (1.25% of reading + 0.03 division + signal aberration).
—15°C to +15°C and +35°C to +55°C Add 1% of reading to +15°C-to-+35°C specification.
AV Range
+ 8 times the VOLTS/DIV switch setting.
Variable Range
Continuously variable between VOLTS/DIV switch settings. Extends
deflection factor of the 5 V per division setting to at least 12.5 V
per division.
Frequency Response
Six-division reference signal from a terminated 50-Q system, with
VAR VOLTS/DIV control in calibrated detent.
—3 dB bandwidth —4.7 dB bandwidth
with standard-accessory with 50-2 external
VOLTS/DIV probe or internal termination on
setting 50-2 termination 1-MQ input
—15°C to +55°C 2mV DC to 100 MHz DC to 100 MHz
—15°C to +35°C 5 mV or greater DC to 300 MHz DC to 300 MHz
+35°C to +55°C 5 mV or greater DC to 250 MHz DC to 250 MHz
AC Coupled Lower —3 dB Point
1X Probe
10 Hz or less.
10X Probe
1 Hz or less.
Step Response
Rise Time
1.17 ns or less for VOLTS/DIV switch settings of 5 mV and up
(calculated).
3.5 ns or less for VOLTS/DIV switch setting of 2 mV (calculated).
Rise time calculated from: bandwidth x rise time = 0.35.
Common-mode Rejection Ratio (CMRR)
At least 20:1 at 50 MHz for common-mode signals of eight divisions
or less, with VAR VOLTS/DIV control adjusted for best CMRR at 50
kHz at VOLTS/DIV switch settings from 5 mV to 5 V. At least 20:1 at
20 MHz for the 2 mV switch setting.
1-2 REV JAN 1984
—~
—

Specification—2465 Operators
Table 1-1 (cont)
REV SEP 1984
~~ Characteristics Performance Requirements
VERTICAL DEFLECTION SYSTEM—CHANNEL 1 AND CHANNEL 2 (cont)
Channel Isolation 100:1 or greater attenuation of the deselected channel at 100 MHz;
50:1 or greater attenuation at 300 MHz, for an eight-division input signal
from 2 mV per division to 500 mV per division, with equal VOLTS/DIV
switch settings on both channels.
Displayed Channel 2 Signal Delay with Respect to Adjustable through a range of at least —500 ps to +500 ps.
Channel 1 Signal
Input R and C (1 MQ)
Resistance 1MQ +0.5%.
Capacitance 15 pF +2 pF.
Maximum Input Voltage J\ 400 V (dc + peak ac). 800 V p-p ac at 10 kHz or less.
Input R (50 Q)
Resistance 502 +1%.
VSWR (DC to 300 MHz) 1.3:1 or less.
Maximum Input Votlage 5 V rms; 0.5 W-seconds during any 1-s interval for instantaneous
(DC Coupling Only) 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 2 input with a 5 V
—™~ rms maximum allowable input voltage are determined from the
following:
; . 5V \2
Maximum duty factor of applied pulse = :
pulse
; . . 5V \2
Maximum duration of applied pulse = V sec.
pulse
Cascaded Operation CH 2 SIGNAL OUT into Channel 1 input; DC coupled using a 50-Q RG-
58C/U coaxial cable, terminated in 50 at the Channel 1 input.
Channel 1 and Channel 2 VOLTS/DIV switch set to 2 mV.
Bandwidth Dc to 50 MHz or greater.
Deflection Factor 400 uV per division + 10%.
VERTICAL DEFLECTION SYSTEM—CHANNEL 3 AND CHANNEL 4
Deflection
Values 0.1 V per division and 0.5 V per division.
Accuracy Within + 10%.
—~
1-3

Specification—2465 Operators
Table 1-1 (cont)
Characteristics
Performance Requirements
VERTICAL DEFLECTION SYSTEM—CHANNEL 3 AND CHANNEL 4 (cont)
Frequency Response (3-dB Bandwidth)
—15°C to +35°C
Six-division reference signal, from a terminated 50-Q system.
—3 dB Bandwidth
With standard-accessory probe
—4.7 dB Bandwidth
With external 50-02 termination
DC to 300 MHz DC to 300 MHz
+35°C to +55°C
DC to 250 MHz DC to 250 MHz
Step Response
Rise Time 1.17 ns or less (calculated from bandwidth).
Channel Isolation 50:1 or greater attenuation of the deselected channel at 100 MHz with
an eight-division input signal.
Input R and C
Resistance 1MQ +1%.
Capacitance 15 pF +3 pF.
Maximum Input Voltage Av
400 V (dc + peak ac);
800 V p-p ac at 10 kHz or less.
VERTICAL DEFLECTION SYSTEM—ALL CHANNELS
Low-frequency Linearity 0.1 division or less compression or expansion of a two-division, center-
screen signal when positioned anywhere within the graticule area.
Bandwidth Limiter Reduces upper 3-dB bandpass to limit of 13 MHz to 24 MHz.
Vertical Signal Delay At least 20 ns of the sweep is displayed before the triggering event is
displayed.
Chopped Mode Switching Rate Vertical display switches sequentially through the selected channels at
the chop switching rate. If the B SEC/DIV switch is set to sweep speeds
outside the range of 20 us per division to 2 us per division, the switching
rate is 1 MHz +0.2% (dual-channel cycle rate of 500 kHz). If the B
SEC/DIV switch is set within the range of 20 us per division to 2 ws per
division, the switching rate is 2.5 MHz +0.2% (dual-channel cycle rate
of 1.25 MHz). At all sweep speeds, the chop switching rate is
desynchronized with the sweep frequency to minimize waveform breaks
when viewing repetitive signals.
TRIGGERING
Minimum P-P Signal Amplitude for Stable
Triggering from Channel 1 or Channel 2 Source
DC Coupled
0.35 division from de 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 division from 60 Hz to 50 MHz, increasing to 1 division at300 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
Performance Requirements
TRIGGERING (cont)
HF REJ Coupled
0.5 division from de to 30 kHz.
LF REJ Coupled
0.5 division from 80 kHz to 50 MHz, increasing to 1 division at 300 MHz,
1.5 divisions at 500 MHz in ADD MODE.
Minimum P-P Signal Amplitude for Stable
Triggering from Channel 3 or Channel 4 Source
Amplitudes are one-half of Channel 1 or Channel 2 source specification.
Minimum P-P_ Signal
Triggering from Composite,
Source in ALT Vertical Mode
Amplitude for Stable
Multiple Channel
Add 1 division to single-channel source specifications.
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 VOLTS/DIV switch settings of 10 mV 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 SEC/DIV switch set to 5 ns,
X10 MAG on, and divisions of amplitude.
LEVEL Control Range
Channel 1 or Channel 2 Source
- \
+ 18 times the VOLTS/DIV switch setting.
Channel 3 or Channel 4 Source
+ 9 times the VOLTS/DIV 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 +35°C
Within + [38% 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°C to +35°C)
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 Coupled specification.
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)].
SLOPE Selection
Conforms to trigger-source waveform or ac power-source waveform.
AUTO LVL Mode Maximum Triggering Signal
Period
A SEC/DIV Switch Setting Less than 10 ms
At least 20 ms.
A SEC/DIV Switch Setting
from 10 ms to 50 ms
At least four times the A SEC/DIV switch setting.
‘ A SEC/DIV Switch Setting
from 100 ms to 500 ms
At least 200 ms.
REV SEP 1984
1-5

Specification—2465 Operators
Table 1-1 (cont)
Characteristics
Performance Requirements
_ TRIGGERING (cont)
AUTO Mode Maximum Triggering Signal Period
A SEC/DIV Switch Setting Less than 10 ms
At least 80 ms.
A SEC/DIV Switch Setting from 10 ms to 50 ms At least 16 times the A SEC/DIV switch setting.
A SEC/DIV Switch Setting
from 100 ms to 500 ms
At least 800 ms.
AUTO LVL Mode Trigger Acquisition Time Eight to 100 times the AUTO LVL Mode maximum triggering-signal
period, depending on the triggering-signal period and waveform.
HORIZONTAL DEFLECTION SYSTEM
A Sweep Time Base Range
B Sweep Time Base Range
SEC/DIV VAR Control
0.5 s per division to 5 ns per division in a 1-2-5 sequence of 25 steps.
X10 MAG feature extends maximum sweep speed to 0.5 ns per division.
50 ms per division to 5 ns per division in a 1-2-5 sequence of 22 steps.
X10 MAG feature extends maximum sweep speed to 0.5 ns per division.
Continuously variable and calibrated between settings of the SEC/DIV
switch. Extends slowest A Sweep speed to 1.5 s per division. Operates
in conjunction with the A SEC/DIV switch when A and B are locked
together; operates in conjunction with the B SEC/DIV switch when A
and are not locked together.
Timing Accuracy (+15°C to +35°C, SEC/DIV
switch set to 0.1 s per division or less)
A and B Sweep Accuracy, Time Intervals
Measured at Vertical Center with SEC/DIV
VAR Control in Detent
Unmagnified Magnified
+(0.7% of time interval
+0.6% of full scale).
+(1.2% of time interval
+0.6% of full scale).
0.6% of full scale is 0.06 division.
At Accuracy, Time Intervals Measured with
Cursors, Anywhere on the Graticule
(A Sweep Only)
Unmagnified Magnified
+(0.5% of time interval
+0.3% of full scale).
+(1% of time interval
+0.3% of full scale).
At Accuracy, Time Intervals Measured with
Delayed B Sweep with Both Delays Set at 1%
or More of Full Scale from Minimum Delay
(no ? displayed in readout)
+ (0.3% of time interval +0.1% of full scale).
Delay Accuracy, A Sweep Trigger Point to Start
of B Sweep
+ (0.3% of delay setting + 0.6% of full scale) —25 ns.
Timing Accuracy (A SEC/DIV switch set to 0.5 s or
0.2 s per division)
Add +0.5% of time interval to accuracy specifications.
Timing Accuracy (SEC/DIV VAR control out of
detent)
Add 2% of time interval to the A and B Sweep Accuracy specification.
REV SEP 1984
a
\

Specification—2465 Operators
Table 1-1 (cont)
Characteristics Performance Requirements
HORIZONTAL DEFLECTION SYSTEM (cont)
Timing Accuracy (—15°C to +15°C and +35°C
to +55°C)
Add +0.2% of time interval to all At and delay specifications. Add
+0.5% of time interval to A and B Sweep accuracy specifications.
At Readout Resolution Greater of either 10 ps or 0.025% of full scale.
At Range
+ 10 times the A SEC/DIV switch setting.
Delay Pickoff Jitter
Within 0.004% (one part or less in 25,000) of the maximum available
delay, plus 100 ps.
Delay Time Position Range 0 to 9.95 times the A SEC/DIV switch setting. Main sweep triggering
event is observable on delayed sweep with zero delay setting.
X-Y Operation
X-Axis Deflection Factor
Range
Same as Channel 1.
Accuracy
Same as Channel 1.
Variable Range
Same as Channel 1.
X-Axis Bandwidth Dc to 3 MHz.
Input R and C Same as Channel 1.
Phase Difference Between X and Y with Normal
Bandwidth
1° or less from de to 1 MHz;
3° or less from 1 MHz to 2 MHz.
X-Axis Low-Frequency Linearity 0.2 division or less compression or expansion of two-division, center-
screen signal when positioned within the display area.
CURSOR AND FRONT-PANEL DISPLAY
Cursor Position Range
Delta Volts (AV)
At least the 7.6 vertical divisions.
Delta Time (At)
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 Positive voltage decreases intensity. From dc to 2 MHz, +2 V blanks a
maximum-intensity trace; from 2 MHz to 20 MHz, +2 V modulates a
normal-intensity trace.
Input Resistance
9kQ +10%.
Maximum Input Voltage ZN
REV SEP 1984
+25 V peak; 25 V p-p ac at 10 kHz or less.
1-7

Specification—2465 Operators
Table 1-1 (cont)
Characteristics
Performance Requirements
SIGNAL OUTPUTS
CALIBRATOR
Output Voltage and Current 0.4V +1% into a 1-MQ load, 0.2 V +1.5% into a 50-0 load, or 8 mA
+1.5% into a short circuit, with the A SEC/DIV switch set to 1 ms per
division.
Repetition Period
Accuracy
Two times the A SEC/DIV switch setting within the range of 200 ns to
200 ms.
+0.1%, measured with SGL SEQ A TRIGGER MODE selected.
Symmetry Duration of high portion of output cycle is 50% of output period
+ (lesser of 500 ns or 25% of period).
Jitter of Pulse Period or Pulse Width
CH 2 SIGNAL OUT
Output Voltage
10 ns or less. =
20 mV per division + 10% into 1 MQ;
10 mV per division + 10% into 50 Q.
Offset
A GATE OUT and B GATE OUT
Output Voltage
+10 mV into 50 2, when dc balance has been performed within +5°C
of the operating temperature.
2.4 V to 5 V positive-going pulse, starting at 0 V to 0.4 V.
Output Drive Will supply 400 A during HI state; will sink 2 mA during LO state.
CRT
Display 80 mm x 100 mm.
Standard Phosphor P31.
Nominal Accelerating Potential 16 kV.
AC POWER SOURCE
Source Voltage
Ranges
115 V 90 V to 132 V.
230 V 180 V to 250 V.
Source Frequency
Fuse Rating
Power Consumption
Typical
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).
Maximum
Primary Circuit Dielectric Voltage Withstand Test
Primary Grounding
1-8
120 W (180 VA).
1500 V rms, 60 Hz for 10 s without breakdown.
Type test to 0.1 2 maximum. Routine test to check grounding continuity
between chassis ground and protective earth ground.
REV SEP 1984

Specification—2465 Operators
Table 1-2
Environmental Characteristics
Characteristics
Performance Requirements
Temperature
Operating
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.
—15°C to +55°C.
Nonoperating (storage)
Altitude
Operating
—62°C to +85°C.
To 15,000 ft. Maximum operating temperature decreases 1°C for each
1,000 ft above 5,000 ft.
Nonoperating (storage)
Humidity (operating and nonoperating)
Vibration (operating)
Shock (operating and nonoperating)
Transit Drop (not in shipping package)
To 50,000 ft.
Stored at 95% relative humidity for five cycles (120 hours) from 30°C to
60°C, with operational performance checks at 30°C and 55°C.
15 minutes along each of three axes at a total displacement of 0.025
inch p-p (4g at 55 Hz), with frequency varied from 10 Hz 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).
50 g, half-sine, 11-ms duration, three shocks on each face, for a total of
18 shocks.
12-inch drop on each corner and each face (MIL-T-28800C, para 3.9.5.2
and 4.5.5.4.2).
Bench Handling (with and without cabinet installed) MIL-STD-810C, Method 516.2, Procedure V (MIL-T-28800C, para
4.5.5.4.3).
EMI (electromagnetic interference)
Topple (operating with cabinet installed)
Meets MIL-T-28800C; MIL-STD-461B, part 4 (CE-03 and 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 B; Part 15 of FCC Rules and Regulations,
Subpart J, Class A; and Tektronix Standard 062-2866-00.
Set on rear feet and allowed to topple over onto each of four adjacent
faces (Tektronix Standard 062-2858-00).
Packaged Transportation Drop
Packaged Transportation Vibration
REV SEP 1984
Meets the limits of the National Safe Transit Association test procedure
1A-B-2; 10 drops of 36 inches (Tektronix Standard 062-2858-00).
Meets the limits of the National Safe Transit Association test procedure
1A-B-1; excursion of 1 inch p-p at 4.63 Hz (1.1) for 30 minutes
(Tektronix Standard 062-2858-00).
1-9

Specification—2465 Operators
Table 1-3
Mechanical Characteristics
Characteristics
Description
Weight
With Accessories and Pouch
10.2 kg (22.4 Ib).
Without Accessories and Pouch
9.3 kg (20.5 Ib).
Domestic Shipping Weight 12.8 kg (28.2 Ib).
Height
With Feet and Accessories Pouch 190 mm (7.5 in).
Without Accessories Pouch 160 mm (6.3 in).
Width (with handle) 330 mm (13.0 in).
Depth
With Front-Panel Cover 434 mm (17.1 in).
With Handle Extended
505 mm (19.9 in).
Cooling
Forced-air circulation.
Finish Tektronix Blue vinyl-clad material on aluminum cabinet.
Construction
Aluminum-alloy chassis (sheet metal). Die-cast aluminum front
panel. Glass-laminate circuit boards.
1-10

—
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. Before con-
necting the oscilloscope to a power source, read entirely
both this section and the Safety Summary.
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
(see Figure 2-1), is set for the correct nominal ac input-
source voltage. To convert the instrument for operation
from one line-voltage range to the other, move the LINE
VOLTAGE SELECTOR switch to the correct nominal
ac source-voltage setting (see Table 2-1). The detachable
power cord may have to be changed to match the particular
power-source output.
LINE FUSE
To verify that the instrument power-input fuse is of
proper value for the nominal ac source voltage selected,
perform the following procedure:
1. Press in the fuse-holder cap and release it with a
slight counterclockwise rotation.
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-wire power 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-securing clamp. 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-source outlet that has
a properly grounded protective-ground contact.
Instruments are shipped with the required power cord
as ordered by the customer. Available power-cord informa-
tion is presented in Table 2-1, and part numbers are listed
in “Options and Accessories’ (Section 7). Contact your
Tektronix representative or local Tektronix Field Office
for additional power-cord information.
INSTRUMENT COOLING
To prevent instrument damage from overheated com-
ponents, adequate internal airflow must be maintained at
all times. Before turning on the power, first verify that both
the air-intake holes on the bottom of the cabinet and the
fan-exhaust holes in the rear panel are free of any obstruc-
tion to airflow.
2-1

Preparation for Use—2465 Operators
LINE FUSE
CAUTION
TO AVOID ELECTRIC SHOCK THE POWER CORD
PROTECTIVE GROUNDING CONDUCTOR MUST BE
CONNECTED TO GROUND.
00 NOT REMOVE COVERS. REFER SERVICING TO
QUALIFIED PERSONNEL.
DISCONNECT INPUT POWER BEFORE REPLACING FUSE.
FOR CONTINUED FIRE PROTECTION REPLACE ONLY
WITH SPECIFIED TYPE AND RATED FUSE.
UL 198.6(3AG)] TEC 127
4X14 250V_15X20mm 250V.
2A FAST 1.6A (F)
LINE VOLTAGE:
SELECTION RANGE
Tisv__| 90-132
230V 180-250V
POWER MAX WATTS 120
MAX VA 180
FREQ 48-440Hz
TEKTRONIX INC. BEAVERTON, OREGON, US.A.
LINE VOLTAGE
SELECTOR SWITCH
DETACHABLE POWER
CORD RECEPTACLE
CH 2 SIGNAL OUT A GATE OUT B GATE OUT
1OmV/DIV INTO 502 Tm A TH A
EXT Z AXIS IN (<25Vpk)
TTL 2 BLANKS
3832-03
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 TRIG‘D indicator on the instrument front 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. If the 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.
2-2
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 shipped to you should be saved
and used for this purpose.
If the original packaging is unfit for use or is not avail-
able, repackage the 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.

3. Wrap the instrument with polyethylene sheeting or
equivalent to protect the outside finish and prevent
entry of packing materials into the instrument.
4. Cushion the instrument on all sides by tightly packing
dunnage or urethane foam between the carton and
the instrument, allowing three inches on each side.
Table 2-1
Preparation for Use—2465 Operators
5. Seal the carton with shipping tape or with an indus-
trial stapler.
6. Mark the address of the Tekronix Service Center and
your return address on the carton in one or more
prominent locations.
Voltage, Fuse, and Power-Cord Data
Line Factory
Plug
Cateao
ee
on
Voltage
petal
Installed
alae
Reference
Configuration gory Plug Type Selector (AC) Instrument Ca Standards”
9 "YP Setting Fuse P
6, as. 2A, 250V ANSI C73.11
Domestic 120V 115V yon AoC. AGG7SAG NEMA 5-15
Standard 15A ast-blow IEC 83
(UL 198.6) UL 198.6
EURO ising eo CEE(7), Il, IV, VII
Option A1 240V 230V to Ree an 5x20 mm_ IEC 83
10-16A 250V Slow-blow IEC 127
(IEC 127)
a 1.6A, 250V
° . ae 180V to 5x20 mm ES ieee
be Option A2 230V 250V Slow-blow 5x20 mm IEC 83
6A x IEC 127
(IEC 127)
: 1.6A, 250V
Australian :
. 180V to 5x20 mm AS C112
Option A3 “On 230V 250V Slow-blow 5x20 mm IEC 127
(1EC 127)
North 2A, 250V ANSI C73.20
: American 180V to AGC/3AG NEMA 6-15-P
Option
Aa
240V
ney
250V
Slow-blow
|
AGC/3AG
|
Ec
g3
15A (UL 198.6) UL 198.6
Switzerland ea ey
. 180V to 5x20 mm SEV
MpHOn xe a aa0y 250V Slow-blow 5%20 mm IEC 127
(IEC 127)
> Reference Standards Abbreviations:
ANSI—American National Standards Institute
AS—Standards Association of Australia
BS—British Standards Institution
CEE—International Commission on Rules for
the Approval of Electrical Equipment
1EC—International Electrotechnical Commission
* A 6A, Type C fuse is also installed inside the plug of the Option A2 power cord.
NEMA—National Electrical Manufacturer's Association
SEV—Schweizevischer Elektrotechischer Verein
UL—Underwriters Laboratories Inc.
3832-02A
REV OCT 1984