Tektronix PG 506 User manual

Tektronoo
COMMITTED TO EXCELLENCE
PLEASE CHECK FOR CHANGE INFORMATION
AT THE REAR OF THIS MANUAL.
PG 506
CALIBRATION
GENERATOR
(S N 804 0000 AND UP)
INSTRUCTION MANUAL
Tektronix, Inc .
P.O.
Box 500
Beaverton, Oregon 97077 Serial
Number _____ _
070-3383-00 First Printing NOV 1980
Product Group 75 Revised DEC 1981

Copy ri ght ©1974 , 19 80 Tektr on ix, I nco All rights reserved.
Cont ents of this pub lic ation may not be reproduced in
anyform without th ewr itt en permissionof Tektronix, Inc.
Products
of Tektroni x, Inc. and its subsidiaries are
covered
by U. S. and foreign patents and/or pending
patent
s.
TEKTRONIX, TE K, SCOPE-M OB IL E, and . are
regi
ste>r ed trademarks of Tektronix, Inc . TELEQ UI P-
MENT is a registered trademark of T
ektronix U.K.
Lim
it ed.
Printed in U.S.
A. Specification and price change
privileges are reserved.

PG 506
(SN B040000 & up)
TABLE OF CONTENTS
Page
LIST OF ILLUSTRATIONS ..... . .. . . .. .... . . ii
LIST OF TABLES ... .. . . . . . . . . . .... . .. . ... . .
Secti
on 1 Specification . . . . . . . . . . . . . . . . .. 1-1
Section 2 Operating Instructions 2-1
I WA RNING I
THE FOLLOWING SERVICE INSTRUCTIONS ARE
FOR USE BY QUALIFIED PERSONNEL ONLY . TO
AVOID PERSONAL INJURY, DO NOT PERFORM
ANY SERVICING OTHER THAN THA T
CONTAINED IN OPERA TlNG INSTRUCTIONS
UNLESS YOU ARE QUALIFIED TO DO SO .
Section 3 Theory of Operation. . . . . . . . . . . . . 3-1
Section 4 Calibration Procedure . . . . . . . . . . .. 4-1
Performance Check . . . . . .. . .. . 4-3
Adjustment Procedure . . . . ... .. 4-12
Section 5 Maintenance ... .. . . ....... ... . 5-1
Section 6 Options .... .... .. . ....... . . . . 6-1
Section 7 Replaceable Electrical Parts . .. . .. . 7-1
Section 8 Diagrams and Illustrations ... .. ....
8-1
Section 9
Replaceable Mechanical Parts . . . .. . 9-1
@

PG 506 (SN 8040000 & up)
LIST OF ILLUSTRATIONS
Fig.
No. Page
PG 506 Calibration Generator. . . . . . . vi
2-1 Plug-in installation and removal ...... , 2-2
2-2 PG 506
controls and connectors ... . .. 2-3
2-3
Output signals from the PG 506 Calibration
Generator ........... . .......... 2-6
2-4 Risetime
derating graph ... . . . . . . . . . 2-7
2-5
Typical waveforms showing correct and
incorrect compensation adjustments ... 2-8
2-6
Typical low frequency response curve " 2-9
2-7
Distortion of square waves caused by low
frequency effects . . . . . . . . . . . . . . . .. 2-9
2-8
Typical waveform showing ringing at front
corner. . . . . . . . . . . . . . . . . . . . . . . . . 2-9
3-1 DVM
timing diagram for a negative input to
the integrator U460 . . . . . . . . . . . . . . .. 3-4
4-1 Attenuator connecti ons for current source 4-4
4-2
Typical response curve of sampling system 4-9
4-3
Typical sampling oscilloscope response
display .... . ..... . ...... . ...... 4-10
4-4
Typical sampling oscilloscope response
display . ....... . ............... 4-10
4-5
Adjustment locations for the A1 Main
circuit board ................... . 4-13
4-6
Adjustment locations for the A2
DVM/Period circuit board ......... . . 4-14
4-7
Adjustment locations for the A3 Fast Rise
Output circuit board. . . . . . . . . . . . . .. 4-16
4-8
Typical response curve as displayed on the
sampling system . . .......... . .... 4-17
4-9
Typical response curve as displayed on the
sampling oscilloscope . ............ . 4-17
5-1 Pin assignments for the PG 506 (rear view,
partial) . . . .
.... . ...... .. ....... 5-3
5-2 Main interface board (partial)
showing
connections. . . . . . . . . . . . . . . . . . . .. 5-4
amplitude and trigger output cable
ii @

PG 506 (SN 8040000 & up)
LIST OF TABLES
Table
No .
1-1
1-2
1-3
2-1
4-1
4-2
4-3
4-4
4-5
4-6
5-1
5-2
@
Electrical Characteristics. . . . . . . . . ..
Environmental Characteristics . . . . . ..
Physical Characteristics . . . . . . . . . ..
Output Load Vs . Voltage Out . . . . . . . .
Test
Equipment Required. . . . . . . . . .
Standard Amplitude (into 1 MO) Within
0.25%, ±1 jN . . . . . . . . . . . . . . . . . ..
100 V dc Range DEFLECTION ERROR %
Resolution Tolerances ... ... .. . . ..
10 V dc Range DEFLECTION ERROR %
Resolution Tolerances .... . ..... . .
Standard Amplitude into a 50 0 Load..
Fast Rise and High Amplitude Output
Period. . . . . . . . . . . . . . . . . . . . . . ..
Selected Component Criteria . . . . . . . .
Relative Suscepti bility to Static Discharge
Damage. . . . . . . . . . . . . . . . . . . . . ..
Page
1-1
1-3
1-3
2-5
4-1
4-3
4-5
4-5
4-5
4-7
5-1
5-5
iii

iv
PG 506 (SN 8040000 &up)
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, but may not appear in this
summary.
TERMS
In This Manual
CAUTION statements identify conditions or practicesthat
could result in damageto the 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
In This Manual
This symbol indicates where applicable
cautionary or other information is to be
found.
As Marked on Equipment
DANGER - High voltage.
Protective
ground (earth) terminal.
ATTENTION -refer to manual.
Power Source
This product is intended to operate from a power source
that will 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 conduc-
tor of the power cord. To avoid electrical shock, plug the
power cord into a properly wired receptacle before
connecting 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 opera-
tion.
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
To avoid fire hazard, use only the fuse of correct type,
voltage rating and
current rating as specified in the parts
list for
your product.
Refer fuse replacement to qualified service personnel.
Do Not Operate in Explosive Atmospheres
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 (for TM 500 plug-
ins only)
To avoid personal injury, do not operate this product
without covers or panels installed. Do not apply power to
the plug-in via a plug-in extender.
@

PG 506 (SN 8040000 & up)
S ER VI CE SAFETY SUMMAR Y
FOR QUALIFIED SERVICE PERSO NN EL ONLY
Re fer a/so to the preceding Operators Safety S ummary.
Do Not Service Alone
Do not perform internal service or adjustment of this
product unless another person capable of rendering first
aid and resuscitation is present.
Use Care When Servicing With Power On
Dangerous voltages exist at several points in this product.
To avoid personal injury, do not touch exposed connec-
tions and components while power is on.
@
Disconnect power before removing protective panels,
soldering, or replacing components.
Po wer Source
This product is intended to operate from a power source
that will 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.
v

vi
PG 506 (SN 8040000 & up)
faA CALIBRATING
INTO 50 II USE
10V TO 0 2mV
AND DIV I DE
VOLTAGE BY 2
HIGH
PG 506 CALIBRATIDN GENERATOR
DEflECTI DN ERRDR
1740 - 01
PG 506 Calibration Generator
@

Section 1-PG 506 (SN B040000 & up)
SPECIFICATION
Performance Conditions Items
listed in the Performance Requirements column
The electrical characteristics are valid only if the
of the Electrical Characteristics are verified by completing
PG 506 has been calibrated at an ambient temperature
the Performance Check in the Service Section of this
between
+20
0 C and
+30
0 C and isoperating at an ambient manual.
Items listed in the Supplemental Information
temperature between O°C and
+50°C. Forced air circula-
column are not verified in this manual. They are either
tion is required for am bient temperatures above +40
0
C.
explanatory notes or performance characteristics for
which no limits are specified.
SPECIFICATION
Table 1-1
ELECTRICAL CHARACTERISTICS
Characteristics Performance Requirements Supplemental Information
STANDARD AMPLITUDE OUTPUT
Range (Peak-to-Peak)
1 MQ Load
Accuracy
500 Load
Accuracy
Period
200 IN to 100 V
Within 0. 25% ± 1 jJV
100 jJV to 5 V
Within 0.25% ±1 jJV
Approximately 1 ms
(1 kHz square wave,
chopped DC)
Deflection Error Readout
Range
Resolution
+ and -
7.5%
Within 0. 1%
HIGH AMPLITUDE OUTPUT
Amplitude (Peak-to-Peak)
Unterminated
500 Load
Polarity
~ 6 V to :;:60 V
~ 0.5 V to :;:5 V
Positive,
measured from a negative
potential to ground .
1·1
REV DEC 1981

1-2
Specification-PG 506 (SN 8040000 & up)
Table 1-1 (cont)
, Characteristics
600 0
Output Resistance
Output Period
1
JiS to 10 ms
Variable
Duty Cycle
Rise Time
Unterminated
500 Load
Leading Edge
Aberrations
during first 50 ns
Performance Requirements Supplemental Information
Within 5%
Within 5%
Extends output period to at least 100 ms.
X1 to greater than X10 range for each
decade step.
Approximately 50% .
~ 100 ns
~ 10 ns
Within 2% of Signal peak-to-peak
amplitude, or 50 mV, whichever is
greater.
FAST RISE
OUTPUTS
Amplitude (Peak-to-Peak)
500 Load ~
100 mV to > 1 V
Polarity
Simultaneous positive and negative.
Positive is measured from a negative
potential to ground. Negative is
measured from a positive potential to
ground .
Output Resistance, 50 0
Within 3% At either Fast Rise connector.
Risetime, 50 0 Load ~
1 ns
Leading Edge
Aberrations ,
first 10
ns
Within 2% of Signal peak-to-peak
amplitude, or 10 mV, whichever is
greater.
Flatness
Within 0. 5% after first 10 ns
Output Period 1 s to 10 ms In decade steps.
Accuracy Within 5%
Variable Extends output period to > 100 ms. X1 to
greater than X10 range for each decade
step .
Duty Cycle Approximately 50%.
TRIGGER OUTPUT
+ Trigger Out ;::: 1 V peak-to-peak into a 50 0 load. Trigger out function available for HIGH
Fixed amplitude . AMPL and FAST RISE modes. Output Signal
leads
HIGH AMPL pulse by about 18 ns and
leads FAST RISE pulse by
about 8 ns.
REV DEC 1981