Tektronix 71310 User manual

7eI~ronbc
Tektronix, Inc .
P
.O .
Box 500
Beaverton, Oregon

97077

Serial Number
COMMITTED TO EXCELLENCE
PLEASE CHECK
FOR CHANGE INFORMATION
ATTHE REAR OF THIS
MANUAL .
71310
TIME BASE
OPERATORS
INSTRUCTION MANUAL
070-2317-00

First Printing SEP 1978
Product Group 42

Revised OCT 1983

Copyright ©
1978
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 numberon 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 :
13000000

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

TABLE OF CONTENTS
PAGE
LIST OF
ILLUSTRATIONS
....................... . . . . . . . . . . . ii
LIST OFTABLES ......................... . . . . . . ...... . . . . . ii
OPERATORS SAFETY SUMMARY .................. . . . . . . .
. iii
SECTION 1 GENERAL
INFORMATION
INTRODUCTION . . ....................................
1-1
OPERATORS MANUAL .............................
1-1
INSTRUCTION MANUAL .......................... . .
1-1
INSTALLATION ... . . . . . . .............................. 1-1
INSTRUMENTPACKAGING ............................ 1-1
SPECIFICATION . . ... . . . . . . ........................... 1-2
STANDARD
ACCESSORIES ........................... 1-4
SECTION 2 OPERATING INSTRUCTIONS
CONTROLS, CONNECTORS AND INDICATORS .......... 2-1
OPERATORS CHECKOUT ............................. 2-1
SETUP
PROCEDURE
...............................
2-1
SWEEP FUNCTIONS .......................... . . . . . 2-1
TRIGGERING
FUNCTIONS ..........................
2-4
DETAILED OPERATINGINFORMATION
............ . . . . . 2-4
TRIGGERING SWITCH LOGIC
..................... . . 2-4
TRIGGERING MODE ....................... . . . . . . . . 2-4
TRIGGERING COUPLING ......................... . . 2-5
TRIGGERING SOURCE ........................... . . 2-5
TRIGGERING SLOPE ....................... . . . . . . . . 2-7
TRIGGERINGLEVEL ............................. . . 2-7
HORIZONTAL SWEEP RATES ..................... . . 2-7
TIME MEASUREMENTS .................... . . . . . . . . 2-7
SWEEP MAGNIFICATION ................... . . . . . . . . 2-8
VARIABLE HOLD OFF
............................ . . 2-8
MAINFRAME OPERATING MODES ................ . . 2-8
APPLICATIONS
............................ . . . . . . . . . . . 2-8
TIME-INTERVAL MEASUREMENTS ............ . . . . . . . .
2-8
PERIOD AND FREQUENCY MEASUREMENTS ...... . . 2-8
RISE-TIME AND FALL-TIME MEASUREMENTS ..... . . 2-9
PULSE WIDTH MEASUREMENTS ................. . 2-10
DELAYED-SWEEP MEASUREMENTS ................. . 2-11
SECTION 3 INSTRUMENT OPTIONS
CHANGE INFORMATION

713110 Operators
LIST
OF ILLUSTRATIONS
FIGURE
NO .

PAGE
Frontis-
piece

71310 Features ................................. . .
iv
1-1

Location of release latch ........................
1-1
1-2

71310 dimensional drawing .....................
1-4
2-1

Front-panel controls, connectors, and
indicators . . . ... . . . . . . ........................ .
2-2
2-2

Effect
of LEVEL control and SLOPE switch on
crt
display
.........
. . . ... . . . . . . . . . .............
2-6
2-3

Area of graticule
used for most accurate time
measurements ........ . . . . . . ...... . . . . . . . . . .... 2-7
2-4

Operation of sweep
magnifier . . . . . . . . . . . . ....... 2-8
2-5

Measuring the period and determing
the
frequency of a displayed waveform
. . . . . . . . . . .... 2-9
2-6

Measuring the rise time and fall time
of a
displayed waveform ...... . . . . . . . . . . . . ...... . . .
2-10
2-7

Measuring the pulse width of a displayed
waveform ........................ . . . . . . ..
. ... 2-10
LIST
OF TABLES
TABLE
NO .
PAGE
1-1 Electrical Characteristics .......................
1-2
1-2
Environmental Characteristics . .................
1-4
1-3 Physical Characteristics ... . . . . . . . . . . . . . . . . .....
1-4

OPERATORS
SAFETY SUMMARY
The following general safety information applies to all operators and service personnel .
Specific warnings and cautions
will be found throughout the manual where they apply and should be followed in each instance .
WARNING statements identify conditions or practices which
could result in personal injury or loss of life .
CAUTION statements identify conditions or practices which could result in damage
to the equipment or other property .
GROUND THE INSTRUMENT
DO NOT REMOVE INSTRUMENT
COVERS
WARNING
7B10
Operators
To reduce
electrical-shock
hazard, the mainframe (oscilloscope)
chassis must be properly grounded . Refer to
the mainframe manual for grounding
information .
To avoid electric-shock hazard, operating
personnel must not remove the protective instrument covers .
Component replacement and internal adjustments
must be made by qualified service personnel only .
DO NOT OPERATE
IN
EXPLOSIVE ATMOSPHERE
To avoid explosion, do not operate
this instrument in an explosive atmosphere
unless it has been certified for
such operation .
PREVENT INSTRUMENT DAMAGE
Plug-in units should not be installed or removed without first turning the instrument power off,
to
prevent
instrument damage .

71310 Operators
71310 Features
2416-1
The 71310 Time-Base unit
provides calibrated sweep rates from
.2 seconds to 2
nanoseconds and triggering to 1
gigahertz for 7100-, 7700-, 7800-,
and
7900-series oscilloscopes .
A
X10
Magnifier increases each sweep rate by a
factor of 10 and a
VARIABLE TIME/DIV control provides continuously variable sweep rates between calibrated steps .
Variable hold off and
alpha-numeric readout are provided . Also, when operating in the
AUTO
TRIGGERING MODE, a
bright baseline trace is
displayed in the absence of a trigger signal . The 71310 can be operated as an independent time
base or as a
delayed-sweep unit with a companion delaying time-base unit .

INTRODUCTION
OPERATORS MANUAL
GENERAL INFORMATION
The Operators Manual contains information
necessary to
effectively operate the 71310 Time Base and is divided
into three sections : Section 1 provides a basic description
of the 71310 with instrument specifications and
accessories, section
2 contains operating information for
the instrument, Instrument Option
information is located
in section 3 of the manual .
INSTRUCTION MANUAL
The Instruction Manual
provides both operating and
servicing information for the 71310
Time Base . The
Instruction Manual is divided into
nine sections .
Operating information is covered in the first
two sections ;
servicing information for use by qualified
service
personnel is contained in the remaining
seven sections
of the manual . Schematic diagrams are located
at the
rear of the manual and can be unfolded for reference
while reading other parts of the manual . The reference
designators and
symbols used on the schematics are
defined on the first page
of the Diagrams and Circuit
Board Illustrations section . All
abbreviations used in this
manual, with the exception of the
parts list and
schematic diagrams, comply with the American
National
Institute Y1 .1-1972 publication . The
parts lists are
computer printouts and use computer-supplied
abbreviations . Instrument Option information is located
in section
6 of the Instruction Manual .
INSTALLATION
The time-base unit is designed to
operate in the
horizontal plug-in compartment of the mainframe . This
instrument can also be installed in a vertical plug-in
compartment to provide a vertical sweep on the
crt .
However,
when
used in this manner, there are no
internal triggering or retrace blanking provisions, and the
unit may not meet specifications .
To install the unit in a plug-in compartment, push
it
in
until it fits firmly into the compartment . The front panel
of the unit should be flush with the front panel of the
mainframe .
Even
though the gain of the mainframe is
standardized, the
sweep
calibration of the unit should be
checked
when installed . The
procedure for checking the
unit is given under Sweep Functions in
the Operators
Checkout procedure in section 2 .
Section 1-71310 Operators
To remove the unit, pull the release
latch (see Fig . 1-1 ) to
disengage the unit from the mainframe,
and pull it out of
the plug-in compartment .
INSTRUMENTPACKAGING
If this instrument
is to be shipped for long distances by
commercial means of transportation,
it is recommended
that it be repackaged in the original
manner for
maximum
protection . The original shipping
carton can be
saved and used for
this purpose . If more information
is
needed, contact your
local Tektronix Field Office or
representative .
Fig . 1-1 . Location of release latch .

General
Information-71310 Operators
This instrument will meet the electrical characteristics listed in Table 1-1, following complete adjustment . The following
electrical characteristics are
valid
over the stated environmental range for instruments calibrated at an ambient
temperature of +20° to +30° C, and after a twenty-minute warmup unless otherwise noted .
SPECIFICATION
TABLE 1-1
Electrical Characteristics
Characteristics

I

Performance
Requirement
SWEEP GENERATOR
'Some
mainframes limit fastest calibrated sweep rate .
2 200 ps/div is measured over any 5 divisions within the center 8 divisions .
REV MAY 1981
Sweep
Rates
Calibrated Range 0 .2 s/div to 2 ns/div in 25 steps .
X10 Magnifier extends
fastest calibrated sweep rate to 0 .2 ns/div .
Variable
Range Continuously variable uncalibrated sweep rate to at
least 2 .5 times the calibrated sweep rate setting .
Sweep
Accuracy' with 7104, 7900 and Measured over center 8 displayed
divisions
. 2 SWP CAL
7800 Series Mainframes is adjusted at 1 ms/div
within the +20
°
to +30 ° C range .
+15° to +35°
C UNMAG MAG X10
0 .2
s/div to 10 ns/div 2% 3%
5
ns/div and 2 ns/div 3% 4% 2
0°
to +50° C Derate +15° to +35° C accuracy by
additional 1% .
Excluded Portions of Sweep
7104 None .
7800, 7900 Series
First
5 ns .
Sweep Length
At least 10 .2 div .
MAG Registration
0 .5 div or less from graticule center when changing
from MAG X10 to MAG X1 .
Position Range
POSITION
Controls fully cw Start of sweep must be to
right
of
graticule center at
1 ms/div .
POSITION Controls fully ccw End of
sweep
must be
left
of
graticule center at 1 ms/div .

REV MAY
1981
Characteristic
TABLE 1-1 (CONT .)
Electrical Characteristics
TRIGGERING
General Information-7B10 Operators
Performance Requirement
'The triggering frequency ranges given here are limited to the -3 dB frequency of the
oscilloscope
vertical
system when operating in the Internal
mode .
"Will not trigger on sine waves at or below 60 Hz when amplitudes are less than 8 divisions Internal or 3 volts External .
5 The
triggering frequency range for DC COUPLING
applies to frequencies above 30 Hzwhen operating in the AUTO TRIGGERING MODE .
Trigger Sensitivity for Repetitive Signals Triggering Frequency Minimum Triggering
Range 3 Signal Required
Coupling Internal External
AC 30 Hz to 250 MHz 0 .5 div 50 mV
250 MHz to 1 GHz 1 .5 div 150 mV
AC LF REJ ° 50 kHz to 250 MHz 0 .5 div 50 mV
250 MHz to 1 GHz 1 .5 div 150 mV
AC
HF REJ
30 Hz to 30 kHz 0 .5 div 50 mV
DC 5 DC to 250 MHz 0 .5 div 50 mV
250 MHz
to
1 GHz
1 .5
div
150 mV
Single Sweep Same as for Repetitive Triggering
.
Internal Trigger Jitter 30 ps or less at 1 GHz .
Operating in HF SYNC MODE
AC, AC LF REJ, or DC 250 MHz to 1 GHz-0
.3 div . Internal
75 mV External .
External Trigger Input
LEVEL RANGE
At least ±3 .5 V
(checked on 1 kHz sine wave) .
Maximum Safe
Input
1-Megohm Input 250 V (dc plus peak ac) .
50-Ohm Input 1 Watt average .
Input R and C
1-Megohm Input
1
Mfg within 5%, 20 pF within 10% .
50-Ohm 50 0 within 2% .
Trigger Holdoff Time
Minimum Holdoff Setting
0
.2 s/div
to 50 ms/div 40
ms, or less
20
ms/div to 2 ps/div
2 times TIME/DIV setting, or less
1 ps/div to 2 ns/div 2 .0 ps, or less
Maximum Holdoff Setting
0 .2 s/div to 50 ms/div
400 ms, or greater
20 ms/div to 2 ps/div 20
times TIME/DIV setting, or greater
1 ps/div to 0 .5
ps/div 20
.0 ps, or greater
0 .2
ps/div to 2 ns/div 6
.0 /is, or greater

General Information-7B10 Operators
Net Weight
TABLE 1-2
Environmental
Characteristics
Refer
to the Specification section of the
associated mainframe manual .
TABLE 1-3
Physical Characteristics
Characteristic

I

Information
Approximately 2 .6 pounds (1 .2 kilogram) .
Dimensions

See Figure 1-2, dimensional drawing .
STANDARD ACCESSORIES
1 ea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..... . .
. . . . Operators Manual
1 ea . . . . . . . . . . . . .... . . . .
. . . . . .. .
.
.. .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instruction Manual
a o 0
000
a R0
0 t]
5.0
(12 .7)
NOTE :

TOPFIGURES IN INCHES
LOWER FIGURES IN CENTIMETERS
OVERALL DIMENSIONS
(MEASURED
AT MAXIMUM POINTS)
1 .2
~
(3 .0)

(31 .7)
14 .5
(36 .9)
(2 .21
r
F
C 1985-5
Fig . 1-2 . 71310
dimensional drawing .