Tektronix 7D20 User manual

OPERATORS

PRODUCT GROUP 42
MANUAL
070-3857-01

T E K MANUAL
ORS ~70~3g57-T~IGROUP
42
First Printing JUL 1982
Revised MAY 1983
7D20
Programmable Digitizer
With Options
Serial
Number
PLEASE
CHECK FOR CHANGE
INFORMATION
AT THE REAR
OF THIS MANUAL
T~ktronoc~

L_
INST~UCTIE'?NS
Ft?R C .~?~i1Pt
:L~"~'iNG THE
SOFTWARE/FIRMYVAHL~
:PERFGR~iIANCE
RgfidRT
Please
type or print dearly
.
We
a separate
Softwnre/Firmwere Performance
Report (SFPR) for each
problem .
SECTION A
Fill in the aerial
number of the 7D20 PROGRAMtiAABt£
DIGITIZER . Preen
the 10 key on
the
7D20
and copy the entire
IMe of Version
Information,
beQinntng
with T£K17D20 .
111 .

SECTION
B
'Use your
complete company maigng
address . Please include the name and '
phone number
of the person reporting
the error . Aleo, be sure to fill in
the
name of the person
submitting the
SFPR .
IV :

SECTION-
e
Check
t#~e reason for report
end whether the error is
reproducible . We :
cannot properly evlauate
tfie Rrobiem
if
we have
difficulty in ~eproduoin~
the error :
SECTION D
Give a complete descriptiat of , the
system configuration
on which -the
~ problem occurred . Please include
relat8d Peripherals,
interlaces ; options,
and Operating system
.
Yi
.

SECTION E
Describe
the problem ,completely . include any
information which might t~elp
._
in evakrat
ng the errorvvith the SfPR . If you have
determined a procedureto
avoid
titie error condition ; please include
this procedure . If
this problem
preveftts
you f~om,aceorttptishfng any useful
work with the product, please
state this fact
. Be sure to include with the SFPR
eny information (Programs,
listings~'hard
copies, etc .) which will
help us'dupticate your problem
:
SECTION
F

'
This
seCtfon is for use by Tektronix
Lab 3cop~ Software
Maintenance
personnel . DO NOT WRITE N THIS
SPACE :
Vlll .

Mail alt Copies pf the
SoftwarelFirmware Performance
deport to :
TEKTRONiX,~ INC .
LAB 'SCOPt=S SOFTWARE
M'AINT£NANCE
P
.O :
BOX 500 DEL . STA . 39-285
SEAVERTON, OREGON 97077

7D20
PROl~AMR~A1iLir DiQ1TlilrR
$OF7WAR~1FtRMWAR~
P~RFCRMANC~
R~PQRT

TABLE
OF
CONTENTS
7D20 Operators
Page
OPERATORS SAFETY SUMMARY . . . . . . . ............................. . . . . ~~~~ ~x
DESCRIPTION ....................... . ..
. . . . . ........................... . . . . . xii
GENERAL
INFORMATION
DESCRIPTION ........................... . . . . . . ................
1-1
ORANGE COLOR USED IN THIS MANUAL . . . . ................
1-1
TECHNICAL MANUALS .................... . . . ...........~~~~~
1-1
OPERATORS MANUAL .................. . . . . . . .............
1-1
SERVICE MANUAL ..................... . . . . . . .............
1-2
INSTALLATION . . . . . . . ........................... . . . . .
. .......... 1-3
RACKMOUNT MAINFRAMES .................. . . . . . . ......-~-~
1-4
COMPATIBILITY . . . . ............................. . . . . ..........
1-4
PACKAGING FORSHIPMENT .................... . . . ..........
1-4
SPECIFICATIONS . . . . . . . . . . . . . . . ........................
. . . . . . ....... 1-6
STANDARD ACCESSORIES . . ........................... . . . ......
1-12
OPTIONAL ACCESSORIES (not included) ............... . . . . . . ...
1-12
OPERATING INSTRUCTIONS
OPERATION ..... . . . . . . . . .... . . ...........................
. . . . 2-1
CONTROLS AND CONNECTORS . . . ........................... . ~ - ~ 2-1
DISPLAY ................. . . . .
. . .
. . . . ........................
. . . . 2-1
FUNCTIONKEYS ......... . . . .
. . . . ........................... . 2-8
ERROR MESSAGES
...... . . . . . . . . ........................... .
2-8
GET-ACQUAINTED
EXERCISES
..... . . . . .......................~~~~~.
2-9
PRELIMINARY SET-UP
.......... . . . . . . . . .........................
2-9
DISPLAY
CALIBRATION ............ . . . . . .......................-
2-10
DISPLAY
ADJUSTMENT PROCEDURE ........................ 2-11
INITIALIZE ............................
. . . . . . . . .................. 2-14
OBTAINING A
WAVEFORM DISPLAY . . . . . . . . . . .................. 2-16
EXERCISES ...........................
. . . . . . . . .................. 2-17
INDEX . . . . . ..............................
. . . . . . . . .............. .
2-17
EXERCISE 1-USING THE VERTICAL CONTROLS ................
2-17
SETTING THE INPUT COUPLING ......... . . . . . ............... 2-19
HOW TO SET THE VZR (Vertical Zero Reference) ............
2-19
CHANGING THE VERTICAL SENSITIVITY
(VOLTS/DIV) ........ 2-21
USING THE VARIABLE VOLTS/DIV CONTROL . . . . ............
2-21
EXERCISE
2-USING THE AOR (ACQUIRE) MODE . . . ............
2-22
EXERCISE 3-USING THE WAVEFORM MEMORY
. . . . . . ......... 2-24
COPYING AND DISPLAYING A WAVEFORM .... . . . . . .........
2-25
A NOTE ABOUT THE DSW (Displayed
Waveform) ORDER .... 2-27
EXERCISE 4-CHANGING THEDESIGNATED
CURSOR
WAVEFORM . . . . . . . . . . . . . . ...........................
. . . . . . . . ... 2-28
REV SEPT 82

7D20 Operators
TABLE OF
CONTENTS (CONT)
Page
OPERATING
INSTRUCTIONS (CONT)
EXERCISE 5-HOLDING A WAVEFORM IN MEMORY .......... .
.2-31
EXERCISE 6-USING THE CURSORS .......................... . . 2-32
CURSOR 1 ............... . . . . . . .............................
2-32
CURSOR 2 AND THE
f
(function
shift) KEY ................. 2-34
USING THE CURSORS
INDEPendently
OR
ALIGNed ......... 2-36
EXERCISE 7-USING THE CURSOR
WAVEFORM DISPLAY
MODIFIER KEYS .............
. . . . . . ............................. 2-42
HOW TO VERTICALLY REPOSITION
THE CURSOR
WAVEFORM .............. . . . . . . . . . ..........................
2-43
HOW TO VERTICALLY
EXPAND
OR
COMPRESS THE
CURSOR WAVEFORM ....... . . . . . . ..........................
2-46
USING HMAG (HORIZONTAL
MAGNIFY) ANDCURSOR
MOVEMENT
................. . . . . . . .......................... 2-49
HMAG AND
THE REFerence WAVEFORM ................... 2-52
HOW
TO USE
HMAG ALL . . . . . . . . ..........................
2-56
USING THE VS (versus) FUNCTION . . . ....................... 2-63
USING
THE REFerence WITHVS . . . . . ....................... 2-65
VECTORS AND DOTS .......... . . . . . . .......................
2-66
EXERCISE 8-USING THE AVERAGE AND ENVELOPE
FUNCTIONS AND
SET N .............. . . . . . . .................... 2-67
EXERCISE
9-DIGITIZING MODES AND THE TIME/DIV
CONTROL ............................ . . . . . . ....................
2-72
REAL-TIME AND EXTENDED REAL TIME . ....................
2-72
ROLL MODE AND EXTernal CLOCK . . . . . . ....................
2-72
EQUIVALENT TIME MODE ............ . . . . . . .................
2-73
EXERCISE 10-SETTING THE TRIGGER POSITION
............... 2-74
EXERCISE 11-USING THE HOLD NEXT . . . . . . . .................
2-77
REAL-TIME AND EXTENDED REAL TIME
. . . .................. 2-78
EQUIVALENT TIME MODE ............. . . . . . .................
2-78
ROLL MODE AND EXTernal CLOCK .... . . . . . . . ...............
2-78
EXERCISE 12-USING THE EXTERNAL CLOCK . . . . ..............
2-79
DETAILED OPERATING INSTRUCTIONS ......... . . . . . . ..............
2-81
INTRODUCTION
........................... . . . . . .............. 2-81
POWER-UP
.................................. . . . . . . . . ........... 2-81
MENU FUNCTIONS
............................ . . . . . . ........... 2-83
MASTER
MENU SELECTIONS ............... . . . . . . ........... 2-83
1,#
STOREPANEL #
.................... . . . . . . ...........
2-83
2,# RECALL
PANEL # ...................... . . . . . ......... 2-84
3
DISPLAY CAL PATTERN .................. . . . . . . ........ 2-84
4
UTILITIES
................................
. . . . . . ........ 2-84
TEST

MENU ................................... : . . . . . .... .
2-86
PROMPTS AND WARNINGS ......................... . . . . . . ...~-
2-88
DISPLAY CALibration ............................. . . . . . . . . . . .
2-90
REV SEPT 82

7D20
Operators
TABLE OF
CONTENTS (CONT)
Page
OPERATING
INSTRUCTIONS (CONT)
READOUT DISPLAY .............................. . . .
............ 2-91
CURRENT CONTROL SETTINGS AND PROMPT FIELD .........
2-91
CURSOR
WAVEFORM PARAMETERS ............. . . . ........
.2-91
VERTICAL CONTROLS . . . ........................... ~ ~ - ~ ~ ~ ~~~~~~
2-92
SIGNAL CONNECTION ........................... . . . . . . .....~
2-92
INPUT CONNECTORS . . . . ........................... . . ~ ~ ~ ~ ~~~
2-92
VOLTS/DIV (VARIABLE) . . ........................... . . . . . ~ ~ ~ ~
2-92
POSITION ....... . . . . . . . . . . . ...........................
. . . . . . 2-93
COUPLING (INPUT) . . . . . . . . . .............................. . .
. 2-93
AOR (ACQUIRE) GAIN . . . . . . . . . ...........................
. . . 2-94
CH2 INV .............. . . . . . . . . ...........................
. . . 2-94
ACQUIRE MODE ............. . . . . . . . . ...........................
2-95
CH1 ~ 1 .................
. . . . . . . . ........................... 2-95
BOTH .................... . ..
. . . . . ........................... 2-95
ADD ~ 1 .................
. . . . . . . . . . . ........................
2-95
CH2
~
2
....................... . . . . . ....................... .
2-96
HOLD .............................
. . . . . ........................
2-96
.f
(shift function) ..................
. . . . . . . . .....................
2-96
TIME/DIV ............................
. . . . . .....................
2-96
DIGITIZING MODES ................ . . . . . . . . ..........-~~.~~~~
2-96
Extended
Real-Time Digitizing (ERD) . . . . . ..................
2-98
TRIGGERING
............................ . . . . . ..................
2-99
SOURCE
............................. . . . . . . . . ...............
2-99
COUPLING ........................... . . . . .
. . . ............. .2-100
MODE . .................................. . . . . .
.............. 2-101
+SLOPE . . . ................................. . . .
. . . . . .......... .2-103
TRIG'D . . . . . . . ..............................
. . . . . . . . . . . ....... .2-104
LEVEL ... . . . . . ................................. . . . . .
. . . ....... .2-104
a
TRIG

POS ~
. . . .................................
. . . . . . ....... 2-104
HORIZ POSITION .................................
. . . . . . . . .... .2-105
VECTOR ... . . . . . . . . . .................................
. . . . . . .... 2-105
MEMORY DISPLAY . . . ...............................
. . . . . . . . . . 2-105
COPY ........ . . . . . . ..............................
. . . . . . . . .
.2-106
CSW .... . . . . . . . . ..............................
. . . . . . . . .... .2-107
.f
CSW

REF

. .

. .

. . . . . . . .. .

.........

. .

.......

. .

....... . .

. . . . .

2-107
CURSOR WFM ..... . . . . .
. . . ............................... .
.
.
.2-108
VPUP4 AND VPDNb (Vertical
Position Up and Vertical
Position Down) ........ . . . . . . ..............................
. 2-108
VCMP
4
AND VXPD
a
(Vertical Compress and Expand) ..... .
2-109
HMAG (Horizontal
Magnify) . . . . . ............................
2-110
f,HMAG
ALL
.............
. . . . . ............................
2-110
VS
.................... . . . . . . ..............................
.2-110
REV SEPT82

III

7D20
Operators
TABLE
OF
CONTENTS
(CONT)
Page
OPERATING INSTRUCTIONS
(CONT)
CUR SO RS

........................
. . . ........................
. .2-112
CURSOR
COORDINATES . . . . . . ., .  .
 .  , .  .2_112
CURSORS
AND MAGNIFIED
WAVEFORMS .....,. , , . , , ,,,,,,
2-1
13
a 1~

. . . . . . . .
. . ...........................
. . ....
. . ........ .2-114
a2~ ...............................
. . . . . . . . ..............
.2-115
DONDO FF ......................
. . . . . ....................
.2-115
IN D E
Pendent ............
. . . . . ... .
. . .....................
. . .2-115
A LIG
N

........... .
. . . . . . . . . . . .................... .
. . . . . . . . .2-115
SET
N ......... . .
.... . . ...........................
. . .
..
. ..... .2-115
AVE
........... . . . ...........................
. . . . . .
........... .2-116
~ . AVE N ...................-...........
. . . . .................
.2-118
ENV
. . ..............................
. . . .......................
.2-118
f,
ENV N ................
. . . . . . . . . .....................
. .
. . . .2-120
f
.
TEST
.... . .
.
..... . . ..
.
. ........................
. ........ . . .2-120
RQS
(REQUEST SERVICE) .... ., . ., ., .  , .  ,...

2-121
f
ROS # . .
..............................
. .
. . . ..... .... . . . . .
. . 2-121
REMOTE
ONLY (indicator) ... ., ., ., .  , .  , . . . ., .,
.
._2_121
ID (ADDRed
Indicator) . . ., . ., .  , .  , . ., . . . ._ ., .,
.,2-121
EXT CLOCK
......... . . . . .
.... . . ....................
. . .........
2-122
EXT TRIG
..... . . . . . . . . . .
. ........................
. ........... .2-123
G PIB

(connector)
. . . . ...........................
. . . .. ........... 2-123
OPERATIONAL
THEORY
BLOCK DIAGRAM
DESCRIPTION
... ., .  , .  , .  , ., ., . ., 3-1
OVERALL
BLOCK DIAGRAM
DESCRIPTION . . ., .  , .  3_1
CHARGE
COUPLED DEVICE
(CCD) OPERATION
. . . .,.,,,...,,,,,,,
3-4
DIGITIZING
MO DES ...................
. . . . . ......................
3-4
WAVEFORM
DISPLAY .......
. . . . . . . . ...........................
3-11
GPIB
IN TR OD U
CTIO N ...............................
. . . ................

4-1
KEY

FEATU
RES ......................
. .
. ..................... .

4-1
SECTION
CONTENTS .......  ., .  , ._  .  , .  ,... ., ..
 .
4-2
G
PIB

DES CRIPTION .........
. . . . . .
. . . ........................
. . ....
.

4-2
POWER

U P .... .
. . . . . . . . . ...........................
. . .... . . .....

4-3
GPIB MODE,
TERMINATOR,
AND ADDRESS
SELECTION .....,..,
4-4
ADDRESS
SELECTION ...... ., .  ,..  . ., .,
.  , .
4-5
TERMINATOR
SELECTION .... ., ...  ,_ .  ,..
.,_ . 
4-6
MODE
SELECTION ....... .
. . . . . . . . . . ..........................
4-6
ALTERNATE
GPIB STATUS
INDICATORS ......,,,,,,,. , , , , , , , . 4_~
REMOTE AND
LOCAL OPERATION .....  .  ,..  ...  .
q_~
IN DICATO
RS . . . ..............................
. . . . . . ..............

4-8
GPIB
INTERFACE FUNCTIONS
........  , ., .  , .  ,..  . .  , ., q_g

7D20 Operators
TABLE OF
CONTENTS ~CONT)
Page
GPIB (CONT)
MESSAGES .... .
. . . . ......................... . . . . . .................
4-9
GPIB
INTERFACE MESSAGES .............. . . . . . ... .~~~~~~~~~~~~~
4-9
TALK
AND LISTEN ADDRESS (MTA, MLA)
. . . ................. 4-9
SERIAL POLL ENABLE COMMAND
(SPE) .... ................. 4-10
GROUP EXECUTETRIGGER (GET)
.......... . . . . . ............. 4-10
DEVICE CLEAR (DCL) . . . ...................... . .......~~~~~~.
4-10
SELECTED DEVICE
CLEAR (SDC) .............. . . . . . ......~~~~ 4-10
INTERFACE CLEAR (IFC) . . . ................
., ..... ...........
4-10
DEVICE-DEPENDENT MESSAGES .................... . . . . . ~~~~~~~
4-11
INTRODUCTION .......... . . . . ....................
. . . . . ...... .
4-1 1
COMMAND USAGE ....... . . . . . ...................... .
. . . ...
.4-11
QUERY USAGE .............
. . . ..................... . . . . .
.... 4-13
DATA TRANSFERS
.......... . . . . .................. .
. .
. . . . .
. . 4-16
Readout ....................
. . . ......:..............
. . . . . . 4-17
Text .........................
. . . . ......................
. . . 4-17
Waveforms .................. . . . . .........................
4-19
Waveform
Curve ............... . . . ........................
4-23
Waveform
Preamble and Curve . . ........................~
4-24
SERVICE REQUESTS
....................... . . . .....................
4-25
USING SRO . ...........................
. . ......................
4-25
Service
Request Masks .............. . . . .......-~~~~~~~~~~
4-31
EVENT QUERIES ........................
.
. ...................
4-32
Event Classification ...................... . ........~~~~~~~~
4-35
Event Codes . . . . ........................
. . . .............. .
4-36
USER-REQUEST FUNCTIONS ................ . . . . ~~~~~~~~~~~~ ~
4-37
COMMAND LIST . . . . . . . . ......................
. . . . ............ .
4-38
SAMPLE PROGRAMS . . . . . . . ......................
. ............
.4-77
INTRODUCTION ..... . . . . . . . ....................
. . . . ..........
4-77
SAMPLE PROGRAM LIST . . . ..................... . . . ..~~~~~~~ 4-77
4050-Series Operating
Programs ............... . . . . ...~~~-
4-78
4050-Series Application
Programs ................. . .......
4-89
4041 Operating
Programs . ....................... ~ ~ ~ ~ ~ ~~~
4-97
4041
Application Programs . . ..................... ~ ~ - ~ ~ ~ ~
4-108
APPLICATIONS
APPLICATION 1-MONITORING
SLOWLY CHANGING EVENTS
WITH THE 7D20 AND 7D1 1 ............. . . . . . .........~~~~~~~~~~
5-1
INSTRUMENTATION SET-UP #1 .............. .............~~~~~~~
5-2
APPLICATION 2-ULTRASONIC,
NON-DESTRUCTIVE TESTING
USING 7D20 . . . . . . .............................
. ............... .
5-3
INSTRUMENTATION SET-UP
#2 ................. . ........~~~~~~~~
5-4
APPLICATION
3-MONITORING INTERCELLULAR
NEURONAL
DISCHARGE
.......................... . . . . .......................
5-6

7D20
Operators
TABLE OF CONTENTS
(CONT)
Page
APPLICATIONS (CONT)
APPLICATION 4-MEASURING PULSE
JITTER, FREQUENCY
SHIFT, AND AMPLITUDE
VARIATIONS USING THE 7D20 .........
5-7
APPLICATION 5-AC LOADLINE
ANALYSIS USING THE
7D20 AND 7A13 .....................
. . . . . . . . ...................
5-9
INSTRUMENTATION
SET-UP #5 ....... . . . . . . . . ...........~~"""""
5-10
CALIBRATION
........................ . . .... . . ...............
5-11
OPERATION
. . ........................... . . . . . ...............
5-11
APPLICATION
6-USING THE7D20WITH THE 7854 FOR
WAVEFORM PROCESSING .................. . . . """"""""""""""""
.5-13
INSTRUMENTATION
SET-UP #6 ................ . . ... . . . .....""""
5-14
MANUAL
TRANSFER ....................... . . . . . . . . ..""""". .
5-15
COMPUTER
CONTROLLED TRANSFER ....... . . .... . . .........
5-15
VI
INSTRUMENT
OPTIONS
INDEX
CHANGE
INFORMATION
NOTE
Service Personne%~ Refer to
the 7D20 Service Manual for
information
on installation, Theory
of Operation, Maintenance, Checks
and
Adjustment, Parts List
and Diagrams .
MANUALS (Standard
Accessories)
7D20 Operators
7D20 Service
RELATED
DOCUMENT
The tabbed "ACCESSORIES"
page at the rear of the
Service Manual lists the
Tektronix part numbers
for all Standard Accessories provided
with this product .
Also, Section 1, General
Information, contains a brief
basic-content description
for
the following publications
:
REV
SEPT
82