Tektronix DC503a User manual
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7~Ictronbc
INSTRUCTION
MANUAL
Tektronix,
Inc
.
P
.O
.
Box
500
Beaverton,
Oregon
97077
Serial
Number
COMMITTED
TOEXCELLENCE
PLEASE
CHECK
FOR
CHANGE
INFORMATION
AT
THE
REAR
OF
THIS
MANUAL
.
D
C
50~A
UNIVERSAL
COUNTER/TAMER
With
Options
070-2971-00
First
Printing
JUN
1980
Product
Group
75
Revised
DEC
1981
Copyright
©
1980
Tektronix,
Inc
.
All
rights
reserved
.
Copyright
©
1980
durch
Tektronix,
Inc
.
Alle
Rechte
vorbe-
Contents
of this
publication
may
not be
reproduced
in
any
halten
.
Der
Inhalt
dieser
Publikation
dart
ohne
Genehmigung
form
without the
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permission
of
Tektronix,
Inc
.
von
Tektronix,
Inc
.
nicht
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werden
.
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of
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Inc
.
and
its
subsidiaries
are
covered
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von
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Inc
.
and
seinen
Tochtergesellschaften
by
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.S
.
and
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and/or
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patents
.
sind
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Patente
abgedeckt
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.S
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.S
.A
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©
1980
TEKTRONIX
INC
.
Tous
droits
r~serv~s
.
Le contenu de
ce
manuel
ne
peut
~tre
reproduit
sous
quelque
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me
que
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soit
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.
Tous
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TEKTRONIX
sont
brevets
US
et
Etranger
et
les
logotypes
TEKTRONIX,
TEK
SCOPE
MOBILE,
sont
d~pos~s
.
©
1980
~KTR~~PjT~T
~J
I'
Ca
=l
~~f,~
Ta~~~~
TEKTRONIX,
TEK,
SCOPE-MOBILE,
ItT7
h
o=7~~f~sS~~~
z~a
Imprim~
aux
USA
.
TEKTRONIX
se
reserve
le
droit
de
modifier
:
*(~
i=
-~
~~]~I)
1f~']<j'Z
iJ1f~~~13
~
q
~a
C
~~~~f~
pract~ristiques
et
prix
daps
le
cadre
de
d~veloppements
techno-
logiques
.
o
h
:
~
h
~
~
LIST
OFTABLES
. .
.
.
.
..................,
vi
OPERATOR'S
SAFETY
SUMMARY
...........
vii
SERVICE
SAFETY
SUMMARY
...............
viii
TABLE
OF
CONTENTS
Section
1
SPECIFICATION
...........
.
...
1-1
Instrument
Description
.
......
.
.
1-1
Instrument
Options
...........
.
1-1
Standard
Accessories
..........
1-1
Performance
Conditions
........
1-1
Electrical
Characteristics
........
1-2
Miscellaneous
...............
1-7
Environmental
...............
1-7
Physical
Characteristics
........
1-8
OPERATORS
PART-ENGLISH
Introduction
.................
2-1
Installation
and
Removal
........
2-1
Controls
and
Connectors
.........
2-2
Display
and
Unit
Indicators
......
2-2
Mode
Selection
and
Control
Functions
.........
.........
2-2
Channel
A
Input
and
Level
Functions
2-4
Input
Considerations
.
.
......
.
.
2-4
Input
Sources
....
.
.......
...
2-4
Input
Coupling
......
.........
2-4
Attenuators
and
Maximum
Input
Volts
...............
.......
2-4
Sensitivity
and
Frequency
Range
. .
2-4
Slope
and
Level
.............
.
2-4
Operators
Familiarization
........
.
2-5
Preparation
.................
2-5
Display
Tests
................
2-5
Readout
Segment
Test
.......
2-5
Frequency
A
Displays
........
2-5
Period
B,
Width
B,
andTimeA
--
B
Displays
..........
.......
2-5
DC
503A
LIST
OF
ILLUSTRATIONS
.................
v
Section 2
OPERATING
INSTRUCTIONS
(cont)
Events
A
During
B
and
Ratio
A/B
Displays
...........
......
2-6
Time
Manual
Displays
. .
.
.
....
2-6
Totalize
A
Display
......
....
2-6
Channel
A
Slope
.........
. .
2-7
Channel
B
Slope
...........
2-7
Operating
Modes
.
.
.............
2-7
General
...........
.........
2-7
Frequency
A
Mode
.
....
.......
2-7
Period
Modes
.
.........
......
2-8
Time
Interval
Modes
.......
....
2-8
Events
A
During
B
Mode
.....
...
2-10
Ratio
Mode
..........
......
.
2-10
Time
Manual
Mode
.......
.....
2-11
Totalize
A
Mode
..........
....
2-12
Repackaging
for
Shipment
......
. .
2-12
Section 2
OPERATING
INSTRUCTIONS
...
...
2-1
OPERATORS
PART-FRENCH
Chapitre
2
INSTRUCTION
D'UTILISATION
I
ntroduction
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
2-1
Installation
et retrait
.....
.....
2-1
Commande~
et
prises
.
....
.....
2-2
Indicateurs d'affichage
et
d'unites
. .
2-2
Selection
du
mode
d'utilisation
et
roles
des
commander
.
.......
2-2
Entree
de
la
vole
A
et
fonctions
de
niveau
.
.
.
...............
2-4
Description
des
entrees
........
2-4
Sources
.
.................
2-4
Couplage
................
2-4
Attenuateurs
et
tensions d'entree
maximales
..............
2-4
Sensibilite
et
plage
de
fr~quence
. .
2-4
Pente
et
niveau
de
declenchement
.
2-4
Familiarisation
de
I'utilisateur
avec
I'appareil
...........
.....
2-5
Mire
en
service
.........
...
2-5
Tests
de
I'affichage
......
....
2-5
Test
des
segments
de
1'affichage
.
2-5
Affichage
de
la
mesure de
la
fr~quence
A
...
.....
. .
2-5
Affichage
des mesures
de
la
p~-
riode
B,
de
la
largeur
B
et
du
temps
A
~
B
.....
.....
2-6
DC
503A
TABLE
OF
CONTENTS
(cont)
Chapitre 2
INSTRUCTION
D'UTILISATION
(cont)
Kaptiel
2
BEDIENUNGSANLEITUNG
(cont)
Affichage
du nombre
d'~v~ne
"
ments
presents
sur
A
durant
B
et
du
rapport
A/B
......
2-6
Affichage
de
la
mesure
manuelle
de
temps
........
. .
.
.
2-6
Affichage
de
la
mesure
de
tota-
lisation
A
(TOTALIZE
A)
. .
2-6
Pente de
la
vole
A
......
....
2-7
Pente de
la
vole
B
...
....
.
2-7
Modes
d'utilisation
.......
.
. .
.
.
2-7
G~n~ralit~s
.....
. .
...
. .
....
2-7
Mode
«Mesure
de fr~quence»
du
signal
de
la
voie
A
.
.....
2-7
Mesure de
p~riode
.....
.....
2-8
Mode
«Mesure
d'intervalle
de
temps»
...
.
.
...
. .
......
2-8
Mode
«Mesure
des
t
:venements
A
durant
B»
..............
2-10
Mode
«Mesure
du
rapport»
....
2-11
Mode
«Mesure
de
temps
manuelle»
2-12
Mode
«Mesure
de
la
totalisation
A»
2-12
Instructions
de
r~emballage
pour
expedition
..........
....
2-12
OPERATORS
PART-GERMAN
Kapitel2
BEDIENUNGSANLEITUNG
Seite
Einfiihrung
.
.
......
.
.....
.
.....
.2-1
Installation
and
Auswechseln
....
. .
2-1
Bedienungselemente
and
Stecker
.
.
. .
2-2
Darstellung
and
Anzeige
der
Einheiten
...
.
.....
.
...... ...
2-2
Wahl
der
Betriebsarten
and
Steuerfunktionen
.. ......
.
...
2-2
Eingang
Kanal
A
and
Pegelfunktionen
.
.
.....
. .
....
2-4
Signaleingang
.... .....: ......
.
....
2-4
Eingangsquellen
...
. .
....
.
.....
.2-4
Eingangskoppelung
...
....
. .
....
.2-4
Teiler
and
max
.
Eingangsspannungen
.
.....
.
.2-4
Empfindlichkeit
and
Frequenzbereich
.
......
.
...... .
.2-4
Flanke
and
Pegel
...... ....... ..
.2-4
Einfiihrung
in
die
Bedienung
...... ...
2-5
Vorbereitung
... ......
.
.....
. .
. .
.2-5
B
%J
.
Uberpriifung
der
Anzeige
....
.
....
2-5
lJberpriifung
der
LED-Segmente
. .
.
......
.
....
.2-5
Frequenz-Darstellungen
A
......
2-5
Periodendauer
B,
Pulsbreite
B
and
Zeit
A
-'
B
Darstellungen
...
.
2-5
Ereignisse
A
w~hrend
B
and
Verhilltnis
A/B
-
Darstellungen
. .
2-6
Manuelle
Zeitdarstellung
....
.
.
.2-6
Darstellung
SummeA
.
......
.
. .
2-6
Flanke
Kanal
A
...... ......
.
...
2-7
Flanke
Kanal
B
...... ......
.
...
2-7
Betriebsarten
...
.
.....
.
.....
. .
...
.2-7
Allgemeines
. .
.
...... ......
.
...
.2-7
Frequenz
A-Betrieb
. .
....
. .
......
2-7
Periodendauermessungen
.
.
.....
.2-8
Zeitintervallmessungen
...
.
......
.2-8
Ereignisse
A
w~hrend
B
. .
.
......
.
2-10
Verh~ltnismessung
.....
.
......
.
.2-10
Manuelle
Zeitmessungen
.
......
. .
2-11
Summierung
A
.. ....... ....... ..
2-12
Verpackung
des
Ger~tes
...
.
...... ..
2-12
OPERATORS
PART-JAPANESE
~
2
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.
....
.
.....
.
.....
.
.......
.
..........
.
.
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.............
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..... .....
.
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....
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...........
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............
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...
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.....
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...............
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#!~1'~t_~~~z~
......
.
.....
.
.....
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.....
.
..................
.2
-
s
TABLE
OF
CONTENTS
(cont)
Page
#'fll~I~
.
.
.....
.
.
.....
.
.....
.
........................
.
.......
~zT
T
~
F
.
.....
.
....
. .
........................
.
.......
2
_
5
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t~l'><i
F
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T~
F
....
.
......
.2-5
Jal>~~A
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.
. .
....
.
.....
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.....
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. . ...........
.
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.
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...
.
.........
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5
e1tAR~~-f'~i
FA#i~11`A/B~T~
.
......
.2-6
~~a9a-3PIL~T~
........................
.
.....
.
.
2
_
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.....
.
....
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...................
.
.......
2
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.......
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.....
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.....
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..................
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....
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.....
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......
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...........
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.......
2
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......
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..........
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.............
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..
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............
.
..................
.
......
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.............
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.....
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.............
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.....
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.p_10
A/B~--F
....
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.....
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.........................
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.................
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.... . . .
2
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....
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......
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.....
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..................
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.....
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...... .
p
-
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2
WARNING
THE
FOLLOWING
SERVICING
INSTRUCTIONS
AREFOR
USE
BYQUALIFIED
PERSONNEL
ONLY
.
T
O
AVOIDPERSONAL
INJURY,
DO
NOT
PER-
FORMANYSERVICING
OTHER
THAN
THATCON-
TAINED
IN
OPERATING
INSTRUCTIONS
UNLESS
YOU
ARE
QUALIFIEDTO
DOSO
.
Section
3
THEORY
OF
OPERATION
........
3-1
BLOCK
DIAGRAM
DESCRIPTION
...
3-1
Introduction
.
................
3-1
Channel
A
and
B
Amplifiers
.....
3-1
FREQUENCY
A
(Variable
Gate)
...
3-1
PERIOD
B
(Variable
Clock)
......
3-1
PERIOD
B
(Averageable
-
100
ns
Clock)
...............
. .
....
3-1
WIDTH
B
(Variable
Clock)
. .
.
.
. .
3-1
WIDTH
B
(Averageable
-
100
ns
'
Clock)
.................
....
3-1
Section
3
THEORY
OF
OPERATION
(cont)
DC
503A
Page
TIME
A
-
B
(Variable
Clock)
....
.
3-2
TIME
A
-
B
(Averageable
-
100
ns
Clock)
. .
...................
3-2
EVENTS
A
DURING
B
(Averageable) 3-2
RATIO
A/B
(Averageable)
.......
3-2
TOTALIZE
A
................
3-2
TIME
MANUAL
(Variable
Clock)
. .
3-2
Decade
Accumulators,
6_Decade
Counter/8-Decade
Latch
...
.....
3-2
Measurement
Cycle
Timing
......
3-2
Decimal
Point
and
Annunicator
Encoder
....
.
. .
... .....
. .
3-2
Time
Base
.
.......
.........
.
3-3
Power
Supplies
.......
.......
3-3
DETAILEDCIRCUIT
DESCRIPTION
Introduction
.............
....
3-3
CH
A
and
CH
Amplifiers
~
O2
.......
. .
3-3
Introduction
to
Signal
Routing
3O
......
.....
3-4
Time
A
--
B
Generator
.
3O
...
3-4
Signal
Routin
and
Gate
Generator
3
. .
..........
3-4
N
Circuit
~
......
.
.
3-7
Measurement
Cycle Timin
.
5O
3-8
Decade
Accumulators
~
O7
3-9
ipple
Through
....
.......
...
3-9
Decimal
Poi
t
and
Annunciator
Encoder
~
..........
....
3-10
Display
O
..........
....
3-10
Switching
Logic
(FUNCTION,
AVGS/TIMING)
O
......
. .
3-10
Time
Base
10
.........
.
3-11
Power
Supplies
10
........
3-11
6-Decade
Counter
Section 4
CALIBRATION
............
.....
4-1
Performance
Check
Procedure
.
....
4-1
Introduction
. .
.
....
........
. .
4-1
Calibration
Interval
.......
.....
4-1
Services
Available
.......
.....
4-1
Test
Equipment
Required
...
....
4-1
Time
Base
Checks
........
....
4-3
DC
503A
TABLE
OF
CONTENTS
(cont)
Page
Page
Section 4
CALIBRATION
(cont)
Section 5
MAINTENANCE
(cont)
CH
A
and
CH
B
Checks
.....
...
4-3
Circuit
Board
Removal
........
.
5-5
Minimum
Pulse
Width
Checks
.
.
. .
4-7
Switch
Maintenance
.
......
....
5-5
Two
Channel
Function
Checks
...
4-10
Front Panel
Latch
Removal
.
. .
...
5-5
Trigger
Level
Checks
..........
4-11
Rear
Interface
Information
.....
...
5-6
Rear
Interface
Checks
.........
4-13
Functions
Available
at
Rear
Adjustment
Procedure
.
..........
4-15
Connector
..................
5-6
Introduction
.
.
.
....
..........
4-15
Test
Equipment
Required
.......
4-15
Section
6
OPTIONS
Preparation
.
........
...
.....
4-15
OPtion
01
.
.
................
6-1
Section
s
MAINTENANCE
............
. .
. .
5-1
General
Maintenance
Information
. . .
5-1
Static-Sensitive
Components
.....
5-1
Cleaning
...................
5-1
Obtaining
Replacement
Parts
....
5-2
Soldering
Techniques
..........
5-2
Semiconductors
..............
5-3
Interconnecting
Pins
. .
.........
5-3
Square
Pin
Assemblies
.
.
.......
5-3
Circuit
Board
Pins
and
Ferrules
...
5-3
Dual Entry
Circuit
Board
Pin
Sockets
5-4
Bottom
Entry
Circuit
Board
Pin
Sockets
............
........
5-4
Multipin
Connectors
.......
....
5-4
Section 7
REPLACEABLE
ELECTRICAL
PARTS
7-1
Section 8
DIAGRAMS
AND
ILLUSTRATIONS
Block
Diagram
Adjustment
Locations
Schematic
Diagrams
Component
Reference
Charts
(Grid
Locators)
Section
9
REPLACEABLE
MECHANICAL
PARTS
9-1
FIG
.
1
EXPLODED
VIEW
ACCESSORIES
CHANGE
INFORMATION
LIST
OF
ILLUSTRATIONS
DC
503A
Fig
.
Fig
.
No
.
Page
No
.
Page
2-1
Plug-in
installation/removal
......
....
2-1
5-1
Typical
square
pin
assembly
. .
. .
.....
5-3
2-2
Controls
and
connectors
..........
. .
2-3
5-2
Exploded view
of
circuit
board
pin
and
2-3
Triggering
circuitresponsetoimproper(A)
ferrule
..................
.
......
5-3
and
proper
(B)
level
settings
........
.
2-5
5-3
Dual
entry
circuit
board
pin socket
....
5-4
2-4
Representation
of
interval
measurements
2-9
5-4
Bottom
entry
circuit
board
pin
socket
. .
5-4
2-5
Typical
CH
A
and
CH
B
Level
Out
voltage
5-5
Orientation
and
disassembly
of
multipin
settings
for
various
time
interval
connectors
.........
.......
.....
5-4
measurements
..................
.
2-10 5-6
Rear
frame
removal
.....
......
....
5-5
2-6
Illustration
of
CH
A
events
counted
from
portion
of
CH
A
signal
pulses during
the
5-7
Circuit
board
removal
.......
...
.
.
. .
5-5
counter
gate
open
time
(controlled
by the
5-8
Pushbutton
switch
removal
.
...
.....
.
5-5
CH
B
signal)
.
.
..................
2-11
5-9
Rear
interface
connector
assignments
. .
5-7
5-10
Rear
interface
timing
for
a
display
of
3-1
Typical
DC
503A
timing
diagram
......
3-5
1079
.0674
....
................
..
5-8
4-1
Check
set-up
for
the high
frequency
sensitivity
using X1
and
X5
attenuation
. .
4-4
4-2
Check
set-up
for
lowfrequency
ac
and
do
sensitivity
.
......
.
.
...........
4-6
4-3
Check
set-up
for
minimum
pulse
width
signals
....
........
............
4-8
4-4
Check
set-up
for
two
channel
functions
.
4-10
4-5
Check
set-up
for
trigger
level
range
(±3
.5
V)
and
accuracy(±20
m
V
±0
.5%
of
reading)
4-12
NOTE
The
following
illustrations
are
found
in
the
foldout
pages
at
the
rear
of
this
manual
.
8-1
Main
Board
(A15
Assy)
Adjustment
Locations
8-2
Auxiliary
Board
(A12
Assy)
Adjustment
Locations
8-3
Auxiliary
Board
(A12
Assy)
Parts
Location
8-4
Main
Board
(A14
Assy)
Parts
Location
LIST
OF
TABLES
Table
No
.
Page
1-1
Electrical
Characteristics
........
....
1-2
1-2
Miscellaneous
..................
.
1-7
1-3
Environmental
...................
7-7
1-4
Physical
Characteristics
............
1-8
2-1
Frequency
A
Display
Check
.........
2-5
2-2
Period
B,
Time
A
-
B,
Width
B
(Timing
Mode)
Display
Check
.
.
............
2-6
2-3
Period
B,
Time
A~
B,
Width
B
(Averaging
Mode)
Display
Check
. . . .
.
.
.
.......
2-6
2-4
Ratio
A/B
and
Events
A
During
B
Display
Check
..................
. .
.....
2-6
2-5
Gate
Time
vs
Measurement
Resolution
.
.
2-8
3-1
PROM
Selection
Code
............
.
3-10
4-1
List of
Test
Equipment
Requirements
...
4-2
5-1
Relative
Susceptibility to
Static
Discharge
Damage
.
...
..................
5-1
NOTE
The
following
fables
are
found
in
the
foldoui
pages
at
the
rear of
this
manual
.
8-1
thru
Component
Reference
Charts
(Grid
8-10
Locators)
The
general
safety
information
in
this part
of
the
summary
250
volts
rms
between
the
supply
conductors
or
between
is
for
both
operating
and
servicing
personnel
.
Specific
either
supply
conductor
and ground
.
A
protective
ground
warnings
and
cautions
will
be
found
throughout
the
connection
by
way
of
the
groundingconductor
in
the
manual
where
they
apply,
but
may
not
appear
in
this
power
cord
is
essential
for
safe
operation
.
summary
.
In
This
Manual
OPERATORS
SAFETY
SUMMARY
TERMS
CAUTION
statements
identify
conditions
or
practices
that
could
result
in
damagetothe
equipment
or
other
property
.
WARNING
statements
identify
conditions
or
practices
that
could
result
in
personal
injury or
loss
of
life
.
As
Marked
on
Equipment
CAUTION
indicates
a
personal
injury
hazard
not
im-
mediately
accessible
as
one
reads
the
marking,
or
a
hazard
to
property
including
the
equipment
itself
.
DANGER
indicates
a
personal
injury
hazard
immediately
accessible
as
one
reads
the
marking
.
SYMBOLS
As
Marked
on
Equipment
DANGER
-
High
voltage
.
Protective
ground
(earth)
terminal
.
ATTENTION
-
refer
to
manual
.
Grounding
the
Product
This
product
is
grounded
through
the
grounding
conduc-
tor
of
the
power
module
power
cord
.
To
avoid
electrical
shock,
plug
the
power
cord
into
a
properly
wired
recep-
tacle
before
connecting
to the
product
input
or
output
terminals
.
A
protective
ground
connection
by
way
of
the
groundingconductor
in
the
power
module
power
cord
is
essential
for
safe
operation
.
Danger
Arising
From
Loss
of
Ground
Upon
loss
of
the
protective-ground
connection,
all
accessible
conductive
parts
(including
knobs
and
con-
trols
that
may
appear
to
be
insulating)
can
render an
electric
shock
.
Use
the
Proper
Fuse
In
This
Manual
To
avoid
fire
hazard,
use
only the
fuse
of
correct
type,
voltage
rating
and
current
rating as
specified
in
the
parts
This
symbol
indicates
where
applicable
list
for
your
product
.
I
cautionary
or
other
information
is
to
be
found
.
Refer
fuse
replacement
to
qualified
service
personnel
.
Do
Not
Operate
in
Explosive
Atmospheres
DC
503A
To
avoid
explosion,
do
not
operate
this
product
in
an
explosive
atmosphere
unless
it
has
been
specifically
certified
for
such
operation
.
Do
Not
Operate
Without
Covers
Power
Source
To
avoid
personal
injury,
do
not
operate
this
product
This
product
is
intended
to
operate
from
a
power
module
without covers
or
panels
installed
.
Do
not
apply
power
to
connected
to
a
power
source
that
will
not
apply
morethan
the
plug-in
via
a
plug-in
extender
.
DC
503A
SERVICE
SAFETY
SUMMARY
FOR
Q
UALI
FI
ED
SERVICE
PERSONNEL
ONL
Y
Refer
also to
the
preceding
Operators
Safety
Summary
.
Do
Not
Service
Alone
Disconnect
power
before
removing
protective
panels,
soldering,
or
replacing
components
.
Do
not
perform
internal
service
or
adjustment
of
this
product
unless
anotherperson capable
of
rendering
first
aid
and
resuscitation
is
present
.
This
product
is
intended
to
operate
in
a
power
module
Use
Care
When
Servicing
With
Power
On
connected
to
a
power
source
that
will
not
apply
morethan
250
volts
rms
between
the
supply
conductors
or
between
Dangerous
voltages
may
exist
at
several
points
in
this
either
supply
conductor
and
ground
.
A
protective
ground
product
.
To
avoid
personal
injury,
do
not
touch
exposed
connection
by
way
of
the groundingconductor
in
the
connections
and
components
while
power
is
on
.
power
cord
is
essential
for
safe
operation
.
Power
Source
Dane
ce
manuel
Rep~res
graves
cur
I'appareil
Dane
ce
manuel
Graves
sur
I'appareil
CONSIGNES
DE
SECURITE
Ce
rappel
des
consignee
generates
de
securite
s'adresse
~
la
Source
d'alimentation
fois
aux
utilisateurs
et
au
personnel
de
maintenance
.
Avertis-
L'appareil
est
conqu
pour
fonctionner
~
partir
dune
source
cements
et
precautions
e
respecter
sont
annotes
au
long
de
ce
d'alimentation
maximale
de
250
V
efficaces
entre
lee
conduc-
manuel
i3
chaque
fois
que
('utilisation
du
DC
503A
I'exige
.
teurs
d'alimentation
ou
entre
chaque
conducteur
d'alimenta-
II
est
~
noter
que
ceux-ci
peuvent ne
pas
figurer
dans
cette
tion
et
la
terre
.
Pour
utiliser
I'appareil
en
toute
securite,
une
rubrique
de
rappel
.
connexion
a
la
masse,
realisee
au
moyen
d'un
conducteur
prevu dans
le
cordon
d'alimentation,
est
indispensable
.
TERMES
Les
paragraphes
intitules
ATTENTION
identifient
lee
circons-
tances
ou
operations
pouvant
entrainer
la
deterioration
de
I'appareil
ou de
tout
autre
equipement
.
Les
paragraphes
intitules
AVERTISSEMENT
indiquent
lee
circonstances
dangereuses
pour
I'utilisateur
(danger
de
mort
ou
risque
de
blessure)
.
CAUTION
(ATTENTION)
:
ce
mot
identifie
lee
zones de
ris-
que non immediatement
perceptibles
ou un
risque
eventuel
de
deterioration
de
I'appareil
.
DANGER
(DANGER)
:
ce
mot
indique
lee
zones de
risque
immediat
pouvant
entrainer blessures
ou
mort
.
SYMBOLES
Ce
symbole
signifie
«se reporter
au
manuel
.
DANGER
-
Haute
tension
.
Mise
a
la
masse
de
I'appareil
DC
503A
Une
fois
installe
dans
le
chassis
d'alimentation,
I'appareil
est
relict
e
la
masse
e
('aide
d'un
conducteur
du
cordon
d'alimen-
tation
.
Pour
eviter
tout
choc
electrique,
inserer
la
prise
du
cordon
d'alimentation
dans
une
prise
de
distribution
corres-
pondante
avant
de
connecter
('entree
ou
lee
sorties
de
I'ap-
pareil
.
Pour
utiliser
I'appareil
en
toute
securite,
une
conne-
xion
e
la
masse,
realisee
au
moyen
d'un
conducteur
prevu
dans
le
cordon
d'alimentation,
est
indispensable
.
Danger
provoque
par
la
coupure de connexion de
masse
En
car
de
coupure
de
la
connexion
de
masse,
tour
les
ele-
ments
conducteurs
accessibles
(y
compris
boutons
et
commander
apparaissant
isolants)
peuvent provoquer un
choc
electrique
.
Utiliser
le
cordon
d'alimentation
appropri~
Borne
de masse de
protection
(terre)
.
N'utiliser
que
le
cordon
d'alimentation
et
la
prise
recornman-
des
pour
votre appareil
.
ATTENTION
-
se
reporter au
manuel
Utiliser
un
cordon
d'alimentation
en
parfait
etat
.
DC
503A
SICHERHEITSANGABEN
FUR
DEN
ANWENDER
Die
allgemeinen
Sicherheitsinformationen
in
diesem
Teil
an
eine
Versorgungsleitung
and
Masse
anzulegen
.
Inner-
der
Angaben
dienen
dem
Anwender-
and
Serviceperso-
halb
des
Netzanschluf3kabels
muf3
ein
Schutzleiter
vor-
nal
.
Spezielle
Warnungen
and
Hinweise
sind
iiberall
im
handen
sein,
der
mit
Ger~temasse
verbunden
ist
.
Handbuch
zu
finden,
mussen
jedoch
in
diesen
Angaben
nicht
erscheinen
.
BEGRIFFE
Dieses
Ger~t
wird
fiber
den
Schutzleiter
der Versor
In
diesem
Handbuch
gungseinheit
mit Erdpotential
verbunden
.
Zur
Vermei-
dung
von
elektrischen
Schl~gen
ist
vor der
Beschaltung
VORSICHTSHINWEISE
erl~utern
Bedingungen,
die zur
der
Ein-
and
Ausg~nge
der
Netzstecker
in
eine korrekt
Zerstdrung
des
Ger~tes
oder
anderer
Gegenstande
fuh-
verdrahtete
Steckdose
einzustecken
.
Verwenden
Sie
ren
kunnen
.
den
Schutzleiter
nicht
als
einzige
Verbindung
zwischen
zwei
oder
mehreren
Ger~ten
.
Zur Vermeidung von
elektri-
WARNUNGSHINWEISE
erl~utern
Bedingungen,
die
zu
schen
Schl~gen
sind
die
Ger~te
untereinander
mit
sepa-
Personensch~den
fuhren
ktinnen
oder
lebensgef~hrlich
raten
Leitungen
zu
verbunden
.
sind
.
Markierungen
auf
dem
Gerat
CAUTION
-
VORSICHT
weist
darauf
hin,
daf3
durch
zufalli-
ges
Beruhren
an
einer nicht
unmittelbar
zug~nglichen
Stelle
Personenschaden
entstehen
kann,
oder
Schaden
am
Ger~t
selbst
.
DANGER
-GEFAHR
weist
darauf
hin,
daf3
durch
zuf~lliges
Beruhren
an
einer
zug~nglichen
Stelle
Personenscha-
den
entstehen
kann
.
$YMBOLE
Zur
Vermeidung
von
Brandsch~den
sind
nur
Sicherun-
gen
zu
verbunden,
die
in
den
Teilelisten
dieses
Ger~tes
In
diesem
Handbuch
aufgefiihrt
sind
and
die
in
Spannungs-and
Stromwert
entsprechend
sind
.
Dieses
Symbol
zeigt
an,
wo
Vorsicht
walten
IQ
zu lassen
ist,
oder
wo
Informationen zu
Ersatz
von Sicherungen
ist
nur
von geschultem
Personal
finden
sind
.
vorzunehmen
.
Markierungen
auf
dem
Gerat
GEFAHR
-
Hochspannung
.
Schutzerdungskontakt
.
ACHTUNG
-
beziehen
Sie
sich
auf
das
Handbuch
.
4
Masseanschlu(3
des
Gerates
Gefahr
durch
fehlende
Schutzerde
Durch
eine
fehlende
Schutzerde,
kt~nnen
alle
beriihr-
baren, leitenden
Teile
(einschlief3lich
Knt~pfe
and
andere
Bedienungselemente,
die
isoliert
sind)
einen
elektri-
schen Schlag
bei
der
Beruhrung
ausltisen
.
Verwendung
einer
richtigen
Sicherung
Arbeiten
Sie
nicht
in
explosiver
Umgebung
Zur
Vermeidung
von
Explosionen
ist
die
Inbetriebnahme
dieses
Ger~tes
in
explosiver
Umgebung
zu
unterlassen,
wenn
das
Gerat
nicht
dafiir
geeignet
ist
.
Entfernen
Sie
keine
Gehauseabdeckungen
Netzspannungsversorgung
Zur
Vermeidung
von
Personensch~den
sind
keine
Die
Betriebsspannung
fur
dieses
Ger~t
darf
250 V
e
nicht
Gehauseteile
zu
entfernen
.
Auch
ist
das
Ger~t
ohne
uberschreiten
and
ist
an
die
Versorgungsleitungen
bzw
.
Geh~use
nicht
in
Betrieb
zu
nehmen
.
REV
A
FEB
1981
SICHERHEITSANGABEN
FUR
DEN
SERVICE
NUR
FURGESCHULTES
PERSONAL
Beziehen
Sie
sich
auch
auf
die
vorangehenden
Sicherheitsangaben
fur
den
Anwender
.
Fuhren
Sie
keine
Servicetatigkeiten
alleine
durch
Vor
dem
Entfernen
von
Geh~useteilen,
LSten
oder
Erset-
zen von
Bauteilen
ist
immerdie
Betriebsspannung
zu
ent
Nehmen
Sie
an
dem
Ger~t keine
Service-
oder
Einstell-
fernen
.
arbeiten
vor,
wenn
nicht
eine
andere
Person
verfiigbar
ist,
um
im
Bedarfsfall
Erste
Hilfe
oder
Wiederbelebungsver-
suche
zu
leisten
.
Lassen
Sie
besondere
Vorsicht walten,
wenn
Sie
an
einem
unter
Spannung
stehenden
Gerat
arbei-
ten
Netzspannungsversorgung
DC
503A
Die
Betriebsspannung
fur
dieses
Ger~t
dart
250
V
eff
nicht
An
verschiedenen
Stellen
im
Ger~t
liegen
hohe
and
damit
iaberschreiten
and
ist
an
die
Versorgungsleitungen
bzw
.
gef~hrliche
Spannungen
.
ZurVermeidung
von
Personen-
an
eine
Versorgungsleitung
and
Masse
anzulegen
.
Inner-
sch~den
sind
solche
Stellen
and
Bauteile
nicht
zu
beriih-
halb
des
Netzanschluf3kabels
muf3
ein
Schutzleiter
vor-
ren,
w~hrend
Betriebsspannung
anliegt
.
handen
sein,
der
mit
Ger~temasse
verbunden
ist
.
REV
A
FEB
1981
L~~`~t~fi>a3t#19t~>4>f~f~`<
f~bfi~7~?~
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REV
A
FEB
1981
X111
DC
503A
DC
503A
Universal
Counter/Timer
REVAFEB
1981
XIV
Instrument
Description
Instrument Options
The
instrument
has
two
input
channels,
CH
A
and
CH
B,
each
with
125
MHz
capability
.
Each
channel
has
separate
triggering
level,
triggering
slope,
attenuator,
and
coupling
mode
controls
.
The
triggering
level
for
each
channel
can
be
monitored
via
the
front
panel
or
the
rear
intertace
connections
.
The
buffered
voltage
available
at
these
connectors
cor-
responds
to
the
trigger
levels
set
by
the
front
panel
controls
.
SP
E
C
I
FI
CATI
O
N
Standard
Accessories
Performance
Conditions
Section
1-DC
503A
The
DC
503A
Universal
Counter/Timer
is
designed
to
Option
01
replaces
the
internal
10
MHz
time base
operate
in
a
TM
500-series
power
module
.
(clock)
circuit
with
a
self-contained
proportional
temperature
controlled
oven
oscillator
for
increased
ac-
curacy
and
stability
.
The
DC
503A
has
eight
measurement
functions
:
FRE-
1
Instruction
Manual
.
QUENCY
A,
PERIOD
B,
WIDTH
B,
TIME
A-
B,
RATIOA/B,
EVENTS
ADURING
B,
TOTALIZE
A,
and
1
Cable
assembly,
bnc-to-tip
jack
.
TIME
MANUAL
.
All
of
the
modes
except
FREQUENCY
A,
TOTALIZE
A,
and
TIME
MANUAL
have
the
capability
of
averaging
the
selected
measurement
over
a
range
of
1
to
NOTE
10
8
times
the
input
signal
.
The
signals
to be
counted
or
measured
can be
applied
via
front
panel
bnc
connectors
or
Refer
to
the
tabbed
Accessories
page
at
the
rear
of
through
the
rear
interface
.
this
manual
for
more
information
.
The
limits
stated
in
the
Performance
Requirements
columns
of
the
following
tables
are
valid
only
if
the
DC
503A
has
been
calibrated
at
an
ambient temperature
The
output
of
the
internal
signal
shaping
circuits
can
between
+20°
C
and +30°
C
and
is
operating
at
an
ambient
also
be
monitored
via
front
panel
connectors
.
These
temperature
between
0°C
and +50°C,
unless
otherwise
shaped
signal
outputs
are
useful
in
setting
the
triggering
stated
.
points
on
complex
waveforms
.
I
nformation
given
in
the
Supplemental
Information
and
Measurement
results
are
displayed
in
an
eight
digit
Description
columns
ofthefollowingtablesisprovidedfor
LED
readout
.
The
decimal
point
is
automatically
position-
user
information
only
and
should
not
be
interperted
as
ed
and
leading
zeros
are
blanked
.
Single
annunciators
Performance
Check
requirements
.
(LEDs)
are
used
to
indicate
register
overflow,
active
gating
interval,
and
the
frequency
or
time
units
associated
with
the
measurement
being
made
.
The
DC
503A
must be
operated
or
stored
in
an
environment
whose
limits
are
described
under
En-
vironmental
Characteristics
.
The
DC
503A
can
be
equipped
with
an
optional,
oven
controlled,
10
MHz
crystal
oscillator
to
obtain
a
highly
stable
and
precise
internal
time base
.
Both
the
optional
.
Allow
at
least
20
minutes
warm-uptimefor
operation
to
oscillator
and
the
standard 10
MHz
time
bases
provide
specified
accuracy,
60
minutes
after
storage
in
a
high
100
ns
single
shot
resolution
.
humidity
environment
.
Spedficatlon-DC
503A
CH
A
and
CH
B
INPUTS/OUTPUTS
Input
Frequency
Range
Front Panel
DC
Coupled
0
Hz
to
3125
MHz
.
AC
Coupled
10
Hz
to
3125
MHz
.
Rear
Interface
DC
Coupled
0
Hz
to
350
MHz
.
AC
Coupled
10
Hz
to
350
MHz
.
Input
Sensitivity
X1 Attenuation
20
mV
rms
sine
wave
to
100
MHz
.
35
mV
rms
sine
wave
to
125
MHz
.
X5
Attenuation
Accuracy
~
I
~2%
at
dc
.
Input
Dynamic
Range
X1
Attenuation
~
I
S3
V,
pe
ak-to-peak
.
X5
Attenuation
~
I
~15
V,
peak-to-peak
.
Shaped
Outputs
Delay
From
Front Panel
I
I
Typic
ally
15 ns
.
Output Voltage
Levels
I
I
3100
mV
into
50
f2,
3200
mV
unterminated
.
Trigger
Level
Slope
I
Plus
(+)
or
minus
(-)
I
Independe
ntly
selectable
.
Output
accuracy
~
f20
mV
f0
.5%
of
reading
Input
Impedance
Range
~
f3
.5
V
times
attenuation
Front Panel
Rear
I
nterface
Table
1-1
ELECTRICAL
CHARACTERISTICS
Characteristics
Performance
Requirements
Supplemental
Information
60
mV
peak-to-peak
pulse
at
a
minimum
pulse width
of
5
ns
to
100
MHz
.
100
mV
peak-to-peak
pulse
at
a
minimum
pulse
width
of
4 ns
to
125
M
Hz
.
X1,
X5
Attenuation
I
I
1
Mfg,
shunted
by
approximately
X1,
X5
Attenuation
I
I
Approximately
50
fl
at
dc
.
Characteristics
Maximum
Safe
Input
Voltage
Front
Panel
FREQUENCY
A
Range
Specification-DC
503A
Table
1-1 (cont)
Performance
Requirements
Supplemental
Information
CH
A
and
CH
B
INPUTS/OUTPUTS
(cont)
X1
Attenuation
DC
to
50
kHz
200
V
peak,
400
V
peak-to-peak
.
50
kHz
to
1
.33
MHz
I
200
V
peak,
peak-to-peak
voltage
~
20
f
(MHz)
1
.33
MHz
to
125
MHz
I
200
V
peak,
peak-to-peak
voltage
~15
V
.
X5
Attenuation
DC
to
5
MHz
200
V
peak,
400
V
peak-to-peak
.
5
MHz
to 100
MHz
I
200
V
peak,
peak-to-peak
voltage
<
2000
f
(MHz)
100
MHz
to
125
MHz
I
200
V
peak,
peak-to-peak
voltage
S20
V
.
Rear
I
nterface
X1,
X5 Attenuation
<4
V,
peak
.
FUNCTIONS
DC
Coupled
~
DC
to
125
MHz
.
AC
Coupled
~
10
Hz
to
125
MHz
.
Minimum
Pulse
Width
~
4 ns
at
100
mV,
peak-to-peak
.
Accuracy
a
I
I
±1
count
±
time
base
error
.
Gate
Time
10
sec
to
100
ns
(0
.1
Hz
to
(Resolution)
10
MHz),
selected
in
decade
steps
.
PERIOD
B
(Single
Shot)
Repetition
Rate
~
>125
MHz
Minimum
Pulse
Width
~
4 ns
at
100
mV,
peak-to-peak
.
Accuracya
`
I
±1
count
±
time
base
error
±1
.4
X
CH
B
trigger
error
.
Resolution
10
sec
to 100 ns
(0
.1
Hz
to
(Clock
Rate)
10
MHz),
selected
in
decade
steps
.
PERIODB
(Average)
Repetition
Rate
>125
MHz
Minimum
Pulse
Width
4 ns
at
100 mV,
peak-to-peak
.
Specification-DC
503A
WIDTH
B
(Average)
Characteristics
WIDTH
B
(Single
Shot)
FUNCTIONS
(cont)
Accuracy
a
n`
±100
ns
±
time base
error
N
Minimum
Pulse
Width
I
20
ns
.
Table
1-1 (cont)
Performance
Requirements
Supplemental
Information
±1
.4
X
(
CH
B
trigger
error
N
Clock
Rate
~
~
100
ns
(10
MHz),
fixed
.
Number
of
Averages
(N)
I
10
°
(1)
to
10
8
,
selected
in
decade
steps
.
Resolution
1
femtosecond
(10
-
")
to
100
ns,
selected
in
decade
steps
.
Accuracya
`
±1
count
±
CH
B
trigger error
(rising
edge)±
CH
B
trigger
error
(falling
edge)
±
time
base
error
.
Resolution
10
sec
to
100
ns
(0
.1
Hz
to
(Clock
Rate)
10
MHz),
selected
in
decade
steps
.
Minimum
Pulse
Width
I
5 ns
.
Repetition
Rate
~
,100
MHz
Minimum
Dead
Time
I
I
5 ns
.
Clock
Rate
~
~
100
ns
(10
MHz),
fixed
.
Number
of
Averages
(N)
10
°
(1)
to
10
8
,
selected
in
decade
steps
.
Resolution
b
I
100
ns
Accuracya
n
`
+100
ns
±
time
base
error
TIME
A
-
B
(Single
Shot)
Minimum
Time
Interval
I
12
.5
ns
.
±CH
B
t
rigger
error
(rising
edge)
±CH
B
trigger
error
(falling
edge)
Accuracya
`
±1
count
±
time
base
error
±CH
A
trigger error
±
CH
B
trigger
error
±4
ns
.
Resolution
(Clock
Rate)
I
10
sec
to
100
ns
(0
.1
Hz
to
10
MHz),
selected
in
decade
steps
.
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