Tektronix CG 5001 User manual

Tektronix , Inc.
P.O. Box 500
Beaverton
,
Oregon
070-4767-00
Product Group
76
97077
Tektronix
COMMITTED TO
EXCELLENCE
PLEASE
CHECK FOR
CHANGE
INFORMATION
AT THE
REAR
OF
THIS
MANUAL .
CG
5001 /
CG
551AP
PROGRAMMABLE
CALIBRATION
GENERATOR
(
SN
B050000 &
UP
)
VOL 2
With
Options
INSTRUCTION
MANUAL
Serial
Number
First Printing SEP 1983

Copyright
©
1983 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
registered
trademarks of
Tektronix
,
Inc.
TELEQUIPMENT
is
a
registered
trademark of
Tektronix
U.K.
Limited
.
KTRONIX
Printed in U.S.A. Specification and price change privileges
are
reserved
.
INSTRUMENT SERIAL NUMBERS
are
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 :
8000000
Tektronix , Inc.
, Beaverton
,
Oregon
, USA
Tektronix
Guernsey
, Ltd. ,
Channel
Islands
100000
200000
Tektronix United Kingdom , Ltd. , London
300000
700000
Sony
/ Tektronix
, Japan
Tektronix Holland , NV , Heerenveen ,
The Netherlands

LIST
OF
ILLUSTRATIONS
LIST
OF
TABLES
.
.
OPERATORS
SAFETY
SUMMARY
SERVICE
SAFETY
SUMMARY
Section 5
CALIBRATION
TABLE
OF
CONTENTS
Introduction
...
Test
Equipment
Required
Calibration
Interval . . .
PERFORMANCE
CHECK
Purpose
..
Limits
and
Tolerances
.
Equipment
Required . .
Preparation ..
List of
Performance
Checks
Preliminary
Instructions
Voltage
Amplitude Mode
Current
Amplitude
Mode ..
Low
Amplitude
Edge
Mode
High
Amplitude
Edge
Mode
.
Markers
Mode
Slewed
Edge
Mode .
.
GPIB
Interface
Test . .
ADJUSTMENT
PROCEDURE
Introduction . ...
Services
Available
Limits
and
Tolerances ..
Internal
Adjustments
...
Equipment
Alternatives and
Partial
Procedures
Preliminary Procedures .
Adjustment
Steps
. .
.
Section 6
MAINTENANCE
Cleaning
Visual
Inspection
..
Semiconductor
Checks
.
.
●
.
Page
iv
V
vii
PREVENTIVE
MAINTENANCE
....
6-1
Introduction
..
6-1
Static
-
Sensitive
Components
...
6-1
6-2
6-2
6-2
5-1
5-1
5-1
5-4
5-4
5-4
5-4
5-4
5-4
5-4
5-5
5-9
5-11
5-15
5-18
5-20
5-22
5-24
5-24
5-24
5-24
5-24
5-24
5-24
5-24
CG
5001
/ CG
551AP ,
Vol . 2
(
SN
B050000
&
Above )
Section 6
MAINTENANCE (
cont
)
General
Troubleshooting
Troubleshooting
Aids ..
Troubleshooting
Equipment
General
Troubleshooting
Techniques
...
INSTRUMENT
DISASSEMBLY
AND
Reference
Board
Output Board . . .
High
Edge Board .
GPIB
Board
BOARD
MAINTENANCE ..
6-8
Circuit
Board
Removal 6-8
Front
Panel
Removal 6-8
Display LED Removal
6-8
Front
Panel
Circuit
Board
6-8
Main
Interconnect
Board
6-8
Time
Interface
Board
6-8
6-8 ..
Time
Mark
Board .
Power
Supply
Boards
6-8
Power
Supply
Interface
Board . .
6-11
.
Introduction ..
Obtaining
Replacement
Parts
Soldering
Techniques .
Component Removal and
Replacement
Adjustment
After
Repair
...
CG
551AP
DIAGNOSTIC
PROCEDURES
...
Introduction
...
Equipment
Required
Adjustment and
Test
Point
Locations
Self -
Test
Description
CMOS
Test
RAM
Test
ROM
Test .
Shift
Register
Test
Page
6-3
6-3
6-6
CORRECTIVE
MAINTENANCE
...
6-13
6-13
6-13
6-13
..
6-6
6-11
6-11
6-12
6-12
6-14
6-16
6-17
6-17
6-17
6-17
6-18
6-21
6-21
6-21
6-22

CG 5001 / CG 551AP , Vol . 2
( SN B050000 & Above )
TABLE OF CONTENTS ( cont )
Section 6 MAINTENANCE ( cont )
Amplitude
Test
Time Test ..
Front Panel Test . . .
ii
Reset
and
Display Test .
Check
Pushbuttons and
Controls
Display
Test
..
CPU Power Test . . .
Power On
Sequence
Test
Variable and Units
/ Div Test . .
Head Sense Test ..
Signature Analysis .
SA Test . . . .
Mux Scan Test . .
Mux Load Test ..
Kernel Test
Data
Register
Formats
Introduction
..
Register
Definitions
...
..
.
.
Page
6-22
6-22
6-22
6-22
6-23
6-23
6-23
6-23
6-23
6-23
6-29
6-29
6-31
6-33
6-35
6-38
6-38
6-38
Section 7
OPTIONS
Section 8
REPLACEABLE
ELECTRICAL
PARTS
Section 9
DIAGRAMS
AND
ILLUSTRATIONS
Adjustment
and Test
Point
Locations
Relay
State
Table
Troubleshooting Trees
Block
Diagrams
Interface
Connections
Schematic
Diagrams
Component
Reference
Charts (
Grid
Locators )
Section
10
REPLACEABLE
MECHANICAL
PARTS
ACCESSORIES
CHANGE
INFORMATION

Fig
.
No.
5-1
5-2
5-3
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-10
6-11
6-12
LIST OF ILLUSTRATIONS
Typical response curve of sampling system
with the TD Pulser . Reference curve for Low
Edge Aberration Check ( Steps 131 and 13m ) 5-13
Typical
sampling
system
response
curve
without
the
TD
Pulser
(
Low Edge
Aberration Check , Steps 13r and 13x )
Typical
waveform
for
positive
and
negative
low edge aberration checks ....
5-29
Color code for resistors and capacitors . 6-4
Semiconductor
lead
configurations
...
6-5
Orientation of multi - pin connectors . . . . 6-6
CG 5001 / CG 551AP circuit board locations .
Power is lost
to all boards
except CPU
and
Front Panel if the A3 board is removed
Circuit
board
holding
screw
.
Page
●
...
Top
view of CG
5001 / CG 551AP
. . .
Bottom view of CG 5001 / CG 551AP .
Rear view of CG 5001 / CG 551AP ...
Outside of Time Interface board . Although
only
one side is
shown , small
board removal
instructions are identical for both sides . 6-11
Output
board
. . .
6-11
Method
of
removing
magnetic
latch
relay
armature ..
Coaxial
end
lead
connector
assembly
..
5-14
6-9
6-10
6-10
6-10
6-10
6-12
6-15
Fig
.
No.
6-13
6-14
6-15
6-16
6-17
6-18
CG 5001 / CG 551AP , Vol . 2
( SN B050000 & Above )
9-1
9-2
9-3
thru
9-40
9-41
thru
9-76
Exploded view
of circuit board
pin and
ferrule . . . .
6-15
Troubleshooting chart for the Display Test 6-24
Troubleshooting
chart for
the CPU Power
Test ..
Troubleshooting
chart for
the Power
On
Sequence Test
. . .
Troubleshooting chart for the Variable and
Units / Div Test
....
Troubleshooting
chart for
the Head Sense
Test ..
NOTE
Page
Adjustment
and
Test Point
Locations
Relay
State
Table
....
6-27
The following illustrations appear in the Diagrams
and
Illustrations
foldout
section .
Troubleshooting Trees 1 through 35
Parts
Location Grids
6-25
6-26
6-28
ili

CG 5001 / CG
551AP
, Vol .
2
( SN
B050000 &
Above )
Table
No.
5-1
5-2
5-3
5-4
5-5
5-6
5-7
5-8
5-9
5-10
5-11
6-1
6-2
6-3
6-4
iv
LIST OF TABLES
Page
List of Test
Equipment
Requirements ...
5-1
Voltage Range and DC Accuracy .
5-5
Voltage Variable Range Accuracy
5-6
5-6
5-7
5-9
Voltage Mode
Current
Limits
...
Initial
Settings For
Sampling
System .
DC
Current
Accuracy and
Range
..
Low Amplitude Edge Signal Check
Settings For Risetime and Aberrations
Check ..
....
5-12
Counter
Display
For
Slewed
Edge
Accuracy
.
Calibration
Displays
For
Step 8
Calibration
Factor
Voltage
Limits
.
Relative Susceptibility To Static Discharge
Damage
.....
Signature
Version
Table
SA Test Signature Tables
Mux Scan Test Signature Tables
. .
●
5-18
5-22
5-26
5-33
6-2
6-29
6-30
6-31
Table
No.
6-5
6-6
6-7
9-1
NOTE
The following tables appear in the Diagrams and
Illustrations foldout section .
9-2
9-3
9-4
Mux Load Test Signature Tables
Kernel Test Signature Tables .
Data
Register
Format List
.
9-5
thru
9-36
Power
Connections , PS
Interface Board
( A5A2 - P1003 )
Power
Connections
, Time Mark
Board
(
A4
-
P1006
)
Power Connections , CPU Board
(
A9 -
P1001 )
GPIB / Time Reference Connections ( Time
Mark and
CPU
Boards )
Page
6-34
6-36
6-39
Component
Reference
Charts

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 .
OPERATORS SAFETY 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 .
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 .
In
This
Manual
A
DANGER
indicates a
personal
injury
hazard
immediately
accessible as
one
reads the
marking .
SYMBOLS
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 .
CG 5001 /
CG
551AP , Vol . 2
( SN
B050000 &
Above )
Power Source
This product is intended to operate in a power module
connected
to
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 module power cord is essential for safe operation .
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
grounding
conductor
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
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
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 .

SERVICE
SAFETY
SUMMARY
FOR QUALIFIED SERVICE PERSONNEL ONLY
Refer also to the preceding Operators Safety Summary .
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
.
CG 5001 / CG
551AP , Vol . 2
( SN
B050000 &
Above )
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 .
Power
Source
This product is intended to operate in a power module
connected to 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
module
power cord is
essential
for safe
operation .
vii

CG 5001 / CG 551AP , Vol . 2
( SN
B050000
&
Above )
viii
MA
INST
JO
NOAM
CONTINUE
Tektronix
VARIABLE
UNITS
/ DIV
VARIABLE
READDUCTES
DUE
ERROR
VAR
RATE -
18
HATE
100
TRIGGER
OUTPUT
WINT
500
CG
551AP
PROGRAMMABLE
CALIBRATION
GENERATOR
OP
REMOTE
VARIABLE
VOLTAGE
AMPLITUDE
MODE
CURRENT
EDGE
FAST
EDGE
NUMBER
OF
DIVISIONS
(
MULTIPLIER )
7000
1000
EDGE
POLARITY
FR
FREQUENCY
2017
THE
100kHz
D
100Hz
JOK
IMR
TIMING
MODE
SLEWED
EDGE
84
100
SHIFT
CURRENT
LOOP
MASX10
C
CG 5001 / CG 551AP Programmable Calibration Generator
MARKERS
10m
/ 52
USE
FOR
15001040
OUTPUT
220V
MAX
ON
2690-1

П
n
ศ
7
1
7
า
7
♫
П
ก
1
П
n
n
П
C
Introduction
This section of the manual is in two parts : Performance
Check
and
Adjustment
Procedure . Each
subsection
has a
different
purpose and
important information
regarding their
use is included at the beginning of both subsections . These
procedures also may be useful as preliminary troubleshoot
ing
aids .
1
2
3
4
5
6
7
8
9
Item
No.
Description
Oscilloscope System
Sampling
System
Digital
Voltmeter
Dc
current
meter ,
with test leads .
Function Generator
Calibration Fixture
Frequency
Counter
Universal Counter
CALIBRATION
Probe
Minimum
Specifications
Table 5-1
LIST OF TEST EQUIPMENT REQUIREMENTS
Minimum vertical deflection
factor , 10 μV / div .
Fastest
calibrated
sweep
rate , .5
ns / div
.
5 1/2
digits
, .005 %
dc
voltage
accuracy
Measure
dc
current to
250 mA .
100 kHz
trigger source , > 1
V
output
Tunnel Diode Pulser 250 mV
output , risetime < 125 ps
10 Hz to 100
MHz , 1 Hz
resolution
Ratio A / B ,
Period
Averaging
10X , 1 Mº , DC to 1 MHz
Test Equipment Required
The test equipment listed in Table 5-1 , or equivalent
equipment
, is
required to
complete
the
Performance
Check
and Adjustment Procedure . In Table 5-1 , the specifications
given for the equipment are the minimum necessary to pro
vide accurate results . Therefore , the equipment used must
meet or exceed the listed specifications . Detailed operating
instructions for the test equipment are not given in this pro
cedure . Refer to the appropriate instruction manual if more
test
equipment
operating
information is
required .
Performance
Adjustment
Check Procedure
X
X
See footnote * See footnote
X
See footnote
X
X
X
X
Section 5 - CG 5001 / CG 551AP , Vol . 2
( SN
B050000 & Above )
Application
X
X
X
X
X
X
X
Example
TEKTRONIX
7904A / 7A22 / 7A26 /
7A19 /
7B92A (
7B80 )
TEKTRONIX
7904A /
7T11
/
7S11 / S - 6 / S - 3A with 100X
Attenuator Head
Fluke Model 8500A / 8502A
TEKTRONIX DM 501A .
Requires
TM 500 -
Series
Power Module
TEKTRONIX FG 503 .
Requires TM
500 -
Series
Power Module
Tektronix
Part
No.
067-0681-01
TEKTRONIX
DC
503A
,
Option 01. Requires TM 500
Series
Power Module
TEKTRONIX DC
503A
,
Option
01.
Requires TM 500
Series Power Module
TEKTRONIX
P6105
5-1

Calibration
-
CG 5001 / CG
551AP , Vol . 2
( SN
B050000 &
Above )
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Item
No.
5-2
Description
Probe
Output
Cable
Assembly
Coaxial Cable
Termination
Termination
2X
Attenuator
2.5X
Attenuator
5X
Attenuator
10X Attenuator
Load resistor
Load resistor
Load resistor
Adapter
Adapter
Adapter
Adapter
Marking
pencil
Flexible
Plug -
in
Extender
( 3
required )
Power
Module
Minimum
Specifications
100Χ , 50 Ω
Supplied
with
CG 5001 / CG 551AP
50 , bnc
connectors
50 , precision feedthrough
50 ,
female (
SMA )
50 , ( 6
dB )
502 , ( 8
dB )
50
22
, (
14
dB
)
50
9
, (
20
dB
)
1
kq ,
2W , 5 %
10 KS , 2W , 5 %
Table
5-1 (
cont
)
20 km , 2W , 5 %
bnc female to dual banana
bnc
male to
dual
binding
post
bnc
to
probe
tip
bnc
female to bnc
female
Adapter ( 2
required )
SMA male
to bnc
female
For
glazed
surfaces
Compatible
with TM
500
Series
power
modules
GPIB
compatibility
Performance
Adjustment
Check
Procedure
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Application
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Example
TEKTRONIX P6057
Tektronix Part No.
012-0884-00
Tektronix Part No.
012-0076-00 ( 18 " ) or 012
0057-01
(
42
" )
Tektronix Part No.
011-0129-00
Tektronix Part No.
015-1004-00
Tektronix Part No.
011-0069-02
Tektronix Part No.
011-0076-02
Tektronix Part No.
011-0060-02
Tektronix Part No.
011-0059-02
Tektronix Part No.
305-0102-00
Tektronix Part No.
305-0103-00
Tektronix Part No.
305-0203-00
Tektronix Part No.
103-0090-00
Tektronix Part No.
103-0035-00
Tektronix Part
No.
103-0084-01
Tektronix Part No.
103-0028-00
Tektronix Part No.
015-1018-00
Dixon Phano
Tektronix Part No.
067-0645-02
TEKTRONIX TM 515 (
Mod
UB
)
TM 5003 or
TM 5006
for CG 5001 & GPIB Exten
der or
TM
506 (
Mod JB )
=
U
a
U
U
11
U
11
11
11
U
11
U

7
1
1
C
î
7
1
1
1
ņ
R
n
1
П
П
C
Item
No.
30
31
Description
Controller
GPIB
cable
Table
5-1 (
cont )
Minimum
Specifications
GPIB
compatibility
Standard GPIB Interconnect ,
2 meters
X
Calibration - CG 5001 / CG 551AP , Vol . 2
( SN B050000 & Above )
Performance
Adjustment
Check
Procedure
X
Application
Example
TEKTRONIX 4050 - Series ; for
example
,
4051
Tektronix Part No.
012-0630-01
* The TEKTRONIX 7B80 Time Base may be substituted in all Performance Check steps , except for the SLEWED EDGE MODE which
requires the 7B92A / 7A19 / 7A26 combination .
" The TEKTRONIX 7B80 Time Base may be substituted for the 7B92A Time Base when performing all of the Adjustments . The 7A22 and
7A19 are not used for Adjustments .
* The S - 3A Sampling Head with 100X Attenuator Head is required only for the Performance Check . The S - 6 Sampling Head is used for
both the Performance Check and Adjustments .
5-3

Calibration - CG 5001
/ CG
551AP , Vol . 2 ,
Performance
Check
(
SN
B050000 &
Above
)
PERFORMANCE
CHECK
Purpose
The
following
Performance
Check
procedures are
in
tended to be
used for
incoming
inspection to
determine the
acceptability of
newly
purchased
or
recently
purchased
instruments
.
The
procedures do
not
check
every facet of
instrument
calibration ;
rather they are
concerned
primarily with
those
portions of the
instrument that are
essential to
measure
ment
accuracy
and
correct
operation
.
This
procedure is
written
such
that
it
can be
indepen
dently
performed for the
operating
mode
desired . The nu
merically
numbered
steps
within an
operating
mode
check
must be
performed
in
the
sequence
presented
.
Removing the CG 5001
/ CG
551AP from the
power
mod
ule is not
necessary
to
perform
the
Performance
Check
pro
cedures
.
All
checks can
be
made
from
the
front
panel
and
via the
GPIB
.
NOTE
Performance Check
procedures for the
Pulse Head
( FAST EDGE MODE ) , Comparator , and Remote Vari
able
accessories are
found in their
respective
instruc
tion
manuals
.
Limits and
Tolerances
All
limits
and
tolerances given in
this
procedure
are
per
formance
guides
and
should not be
interpreted as
instru
ment
specifications unless
they are
listed as such in
the
Specification
section .
Equipment
Required
Equipment required to perform a completed Performance
Check is
described
in
Table 5-1 . At
the
beginning of
the
instructions for each
operating mode
check is a list of
test
equipment required to accomplish the steps in that block of
instruction .
When equipment other than that recommended is used ,
control
settings
or test
setups
may
need to be
altered
. If the
item of
equipment
given as
an
example
in
Table 5-1 is not
available
,
check the
Minimum
Specification
column
and
the
footnotes
following
Table 5-1
carefully to
determine
whether
any other equipment might suffice . Then , check the list of
equipment required under the performance checks for the
5-4
individual
operating
modes . If
the item is
used for a perfor
mance
check
that is of
little or no
importance to
your
mea
surement
requirements
,
the
item and
corresponding
steps
can
be
deleted .
Preparation
Before
installing
the
CG 5001 / CG
551AP
in
the
power
module for a first time Performance Check , set the GPIB
address switches for an address of 01 ( decimal ) and the end
of message terminator switch to the EOI only position . In
structions for setting those switches are found in Section 3 ,
Vol . 1 (
Fig .
3-1 ) .
List of Performance Checks
VOLTAGE AMPLITUDE MODE
CURRENT AMPLITUDE MODE
LOW AMPLITUDE EDGE MODE
HIGH AMPLITUDE EDGE MODE
MARKERS MODE
SLEWED EDGE MODE
GPIB INTERFACE TEST
Page
5-5
5-9
5-11
5-15
5-18
5-20
5-22
Preliminary
Instructions
Apply power to the CG 5001 / CG 551AP and perform the
following
steps
:
1. Press the INST ID button and check for the GPIB
address displayed in the readout window ; address
should be decimal 01 .
2. Observe the displayed power on default values and
that the CG 5001 / CG 551AP OUTPUT is off .
3. Press and hold the CG 5001 / CG 551AP RESET but
ton for about 1 second ; all LED segments in the dis
play window should be illuminated .
4. The CG 5001 / CG 551AP does not have to be con
nected
to the
GPIB
controller
until
you are ready
for
the GPIB Interface Test .
5. Allow approximately 15-20 minutes warmup time .
6. Proceed with the following Performance Checks .
11
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7
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Д
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1
VOLTAGE AMPLITUDE MODE
Equipment Required ( see footnotes following
Table 5-1 )
Oscilloscope System TEKTRONIX 7904A / 7A22 / 7A26 /
7B80 .
Sampling System - TEKTRONIX 7904A / 7S11 / 7T11 / S - 6 /
S - 3A / 100X Attenuator Head .
Digital Voltmeter - Fluke Model 8500A / 8502A .
Dc Current Meter - TEKTRONIX DM 501A .
Function Generator - TEKTRONIX FG 503 .
Probe , 10X , 1 Mº — TEKTRONIX P6105 .
Output Cable Assembly ( supplied with
CG
5001
/
CG 551AP
) .
Coaxial Cable , 50 9 , bnc
connectors .
Adapter
,
bnc to
dual
binding post .
Adapter
, bnc
to probe tip
.
Adapter , bnc female to dual banana .
Adapter
,
SMA
male
to
bnc
female ( 2
required ) .
Termination , 50 92 ,
female
(
SMA
) .
Termination
, 50
92 ,
precision
feedthrough
.
10X Attenuator , 50 2 .
Load resistor , 10 kº , 2 W , 5 % .
1.
Check
Voltage
Range
and Dc
Accuracy
a . Set the CG
5001 / CG
551AP
controls
as
follows :
AMPLITUDE MODE
OUTPUT
VOLTAGE
ON
FREQUENCY DC
Off
USE FOR 50 2 LOAD
VARIABLE
Off
b .
Connect the CG 5001 /
CG
551AP
OUTPUT
connector
through the output cable assembly to the digital voltmeter
input
terminals .
c . Set the UNITS / DIV control and NUMBER OF DIVI
SIONS ( MULTIPLIER ) pushbuttons as listed in Table 5-2 .
d . CHECK - that the voltmeter reads within the limits
shown in Table 5-2 .
Calibration - CG 5001 / CG 551AP , Vol . 2 , Performance Check
( SN B050000 & Above )
Table 5-2
VOLTAGE RANGE AND DC ACCURACY
UNITS / DIV
( V / D )
20
10
10
10
1
1
1
1
1
.5
.5
.1
NUMBER OF
DIVISIONS
( MULTIPLIER )
10
10
2
1
8
6
5
4
3
5
3
1
VARIABLE
Voltmeter
Reading
Limits
(
Vdc
)
e . Leave the control settings and proceed to the next
step .
200.50
to
199.50
100.25 to
99.75
20.05
to
19.95
10.025 to
9.975
8.020 to
7.980
6.015 to 5.985
5.0125 to 4.9875
3.990
4.010 to
3.0075 to 2.9925
2.5062 to 2.4938
1.5037 to 1.4963
0.1002 to 0.0998
2.
Check
Voltage
Variable
Range
Accuracy
a . Set the digital voltmeter to the 20 Vdc scale .
ON
b . Change the CG 5001 / CG 551AP controls as follows :
UNITS / DIV
10 V /
D
1
NUMBER OF DIVISIONS
(
MULTIPLIER )
c . Turn the CG 5001 / CG 551AP VARIABLE control so
that the readout in the display window indicates the percent
values shown in Table 5-3 .
d . CHECK - that the voltmeter reads within the volt
meter reading limits in Table 5-3 .
5-5

Calibration - CG 5001 / CG 551AP , Vol . 2 , Performance Check
(
SN
B050000
Above
)
Table 5-3
VOLTAGE VARIABLE RANGE ACCURACY
CG 5001 / CG 551AP
Display
5.0 % LOW
9.9 % LOW
5.0 % HIGH
9.9 % HIGH
e . Leave the control settings and connections and con
tinue to
the
next
step
.
UNITS / DIV
VARIABLE
3. Check Voltage Mode Current Limit
a
. Change the
CG 5001 /
CG
551AP controls as
follows :
Voltmeter Reading Limits ( Vdc )
b . Remove the output cable assembly connection to the
voltmeter and connect the precision 50 load between the
cable and the voltmeter .
10.5000 to
10.5526
11.0711 to 11.1265
9.5000 to 9.5476
9.0764 to 9.1219
c . Set the CG 5001 / CG 551AP USE FOR 50 2 LOAD
pushbutton
to
ON
.
d . Set the CG 5001 / CG 551AP UNITS / DIV control and
NUMBER OF
DIVISIONS
(
MULTIPLIER )
pushbuttons
to
the values shown in Table 5-4 .
UNITS / DIV
(
V / D )
5-6
e . CHECK - that the voltmeter reads between the limits
listed in Table 5-4 .
5
1
.1
5 V / D
Off
Table
5-4
VOLTAGE MODE CURRENT LIMITS
NUMBER OF
DIVISIONS
( MULTIPLIER )
1
1
1
Voltmeter
Reading
Limits
(
Vdc )
4.9875 to 5.0125
0.9975 to 1.0025
0.09975 to 0.10025
f . Set the USE FOR 50 2 LOAD to off and the OUTPUT
to
off
.
g . Remove the precision 50 M termination .
h
.
Using appropriate
adapters and
test leads
,
connect
the output cable to the voltmeter with a 10 k , 2 W resistor
in parallel with the voltmeter input terminals .
WARNING
Do not touch the output terminals during this test ;
100
V is
present
on
these terminals
.
i . Set the CG 5001 / CG 551AP UNITS / DIV control to
10 V / D and the NUMBER OF DIVISIONS ( MULTIPLIER ) to
10
.
j
. Set the
digital
voltmeter
to the 200
Vdc
scale and
the
CG
5001 / CG 551AP
OUTPUT to ON .
k
.
CHECK
- that
the
voltmeter reads
between 99.75 and
100.25 Vdc .
1.
Set the CG
5001 / CG
551AP NUMBER OF
DIVISIONS
(
MULTIPLIER
) to 1
and
the
OUTPUT
to off .
Remove
the
10
k load
resistor and the
connections
to the
voltmeter .
Proceed to the
next
step
.
4.
Check
Voltage
Mode
Short
Circuit
Current
a
. Set the CG
5001 / CG
551AP UNITS / DIV
control for
10 V / D and NUMBER OF DIVISIONS ( MULTIPLIER ) to 1 .
b . Connect the CG 5001 / CG 551AP OUTPUT through
the
output cable
assembly to the
dc current
meter
with
ap
propriate
adapters .
c
. Set the dc
current meter
to measure 200
mA . Set the
CG
5001 / CG
551AP OUTPUT to ON .
d
.
CHECK
-
that
UNCAL is shown
in the CG 5001
/
CG
551AP display and that
the dc
current meter
reads less
than 200 mA .
e
. Set the CG
5001 / CG
551AP UNITS
/ DIV
control to
20 V / D .
f . CHECK - that UNCAL is shown on the CG 5001 /
CG
551AP display and that
the dc
current meter reads
less
than 30 mA .
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g . Remove all connections to the dc current meter and
proceed
to the
next step .
5.
Check
Square
-
wave
Voltage
Accuracy
Perform all of
the
following
measurements as
quickly
as possible ; otherwise , drift of the Sampling Units ( in
time ) may cause measurement errors .
a . Set the
CG 5001
/ CG
551AP
controls as
follows :
UNITS / DIV
0.5 V / D
VARIABLE
Off
NUMBER OF
DIVISIONS
1
( MULTIPLIER )
FREQUENCY
USE FOR
50 2
LOAD
TRIGGER OUTPUT
NOTE
b . Using the output cable assembly and an SMA male to
bnc female
adapter , connect the
CG 5001 / CG
551AP OUT
PUT to the
S - 6
Sampling Head
installed
in
the 7S11
Sam
pling Unit .
Terminate the S - 6
with the
502 ,
female ( SMA )
terminator
.
c .
Connect the CG 5001 /
CG 551AP
TRIGGER OUTPUT
through a 50 coaxial cable and SMA male to bnc female
adapter to the
7T11 Trigger
Input
connector
.
d .
Set
the
7S11
and
7T11
to
the
settings in
Table
5-5 .
See
NOTE
following
Table
5-5 .
100
kHz
ON
ON
e .
Change the 7T11
Time / Div to
2 μs / div .
7T11
Unit
7S11 (
with
S6 )
Table
5-5
INITIAL
SETTINGS FOR
SAMPLING
SYSTEM
Control
mVolts / DIV
VAR
Polarity
DC
Offset
Dot
Response
Slope
Sampling
TRIG
AMP
TRIG
SEL
SCAN
Time
Pos
Rng
Time / Div
Setting
200
on (
out )
+
up
centered
Smooth
+
Sequential
X 1
EXT
50
2,2 V
max
Rep
50
μS
.5
μS
Calibration - CG 5001 / CG 551AP , Vol . 2 , Performance Check
( SN
B050000 &
Above
)
NOTE
Table 5-5 is
also used (
referenced
) for
certain steps in
the CURRENT AMPLITUDE MODE and LOW EDGE
AMPLITUDE
MODE
checks .
Adjust the
Sampling
System TRIG LEVEL and STABILITY controls for a
stable display . Adjust the SCAN control for good
squarewave response .
f . Adjust the 7S11 Variable control for 4 divisions of ver
tical
deflection on
the crt
display
.
g . Change 7S11 vertical deflection to 2 mV / div and align
the top of the square wave exactly on the center horizontal
graticule
line
.
h .
Disconnect the cable from
the CG 5001 / CG
551AP
TRIGGER
OUTPUT
and
connect
the cable
to the FG
503
TRIG OUT
connector
.
Set FG 503
controls
for a
trigger
out
put
of
approximately
100 kHz .
i . Set the CG
5001 / CG
551AP
FREQUENCY to DC .
j .
CHECK
-
that the
sweep trace ( dc
level on the
crt ) is
within
1
major
division
of the
center
horizontal
graticule
line .
k .
Disconnect the
output
cable
from
the S - 6
Sampling
Head and connect a 10X attenuator to the cable . Reconnect
the
attenuator
and
cable to the S - 6
Sampling
Head .
I. Change the CG 5001 / CG 551AP controls as follows :
UNITS / DIV
5 V / D
1 NUMBER OF DIVISIONS
(
MULTIPLIER
)
FREQUENCY
100 kHz
m .
Repeat steps 5d
through
5j .
n . Replace the S - 6 Sampling Head with an S - 3A Sam
pling Head and
100X
attenuator head . Remove
the 10X
attenuator
from the
output
cable assembly
and
reconnect
the
cable via a bnc
to
probe tip
adapter to the
100X attenua
tor head on the S - 3A .
o . Set the
7S11
vertical deflection to 200
mV / div and
set
the 7T11 Sampling Sweep Unit to 5 sec / div .
p . Connect the CG 5001 / CG 551AP TRIGGER OUTPUT
to the
7T11
Trigger
Input .
5-7

Calibration - CG 5001 / CG 551AP , Vol . 2 , Performance Check
( SN
B050000
&
Above )
q
. Change
the
CG
5001 / CG
551AP
controls
as
follows :
FREQUENCY
USE
FOR 50
2 LOAD
UNITS / DIV
NUMBER OF
DIVISIONS
(
MULTIPLIER
)
r
. Adjust
the
7S11
Variable
for 5
divisions
of
vertical
de
flection
on
the crt
display
.
s
. Set the
7S11
vertical
deflection to 2
mV / div . Set
the
S - 3A Offset to X2 position . Align the top of the square wave
exactly
on
the center
horizontal
graticule
line .
t
. Disconnect
the
cable
from
the CG
5001 / CG
551AP
TRIGGER
OUTPUT and
connect
the cable
to the FG
503
TRIG OUT connector . Set FG 503 for a trigger output of
approximately
100
kHz .
Set the
CG 5001
/
CG 551AP
FRE
QUENCY to DC .
10 kHz
Off
50 V / D
4
u
. CHECK
- that
the
sweep
trace
is
within
+1.25
major
divisions of the
center
horizontal
graticule
line
.
v
. Set the
CG 5001
/ CG
551AP OUTPUT
to off .
Remove
all connections to the Sampling System .
w
.
Replace
the
sampling
plug - in
units
with
a
7A22
Dif
ferential
Amplifier
and
7B80
Time
Base . Set the
CG
5001 /
CG
551AP
controls as follows
:
FREQUENCY
VARIABLE
UNITS / DIV
USE FOR 50 2 LOAD
NUMBER
OF
DIVISIONS
(
MULTIPLIER )
OUTPUT
1 kHz
Off
20
mV / D
ON
4
5-8
ON
x
. Connect
the
CG
5001 / CG
551AP
OUTPUT
connector
through
the output
cable
and precision
50 M
terminator to
the
7A22 + INPUT
connector , DC
Coupled . Connect
the
CG
5001 / CG
551AP TRIGGER
OUTPUT through
a 50 № co
axial
cable to the
7B80 EXT TRIG
IN connector
.
NOTE
The
trigger
signal
must
NOT be
terminated
in 50
when operating at low amplitudes . Circulating ground
currents can cause output amplitude errors .
y . Set the 7A22 VOLTS / DIV controls to match the
CG 5001 / CG 551AP UNITS / DIV setting . Set the 7A22 HF
-3 dB point to 1 MHz and the LF -3 dB point to DC . Set
7B80 Time
Base
controls for a stable ,
displayed signal .
z . CHECK - that the displayed waveform is approxi
mately 4
divisions high .
aa
.
Change
the
CG 5001 / CG
551AP UNITS
/ DIV
control
to .2 mV / D .
bb
.
Repeat
steps 5y
and 5z .
cc
.
Change the
CG
5001 / CG
551AP
UNITS / DIV
control
to 10
μV / D .
dd
.
Repeat
steps 5y
and 5z
.
ee
.
Record the
peak - to -
peak
amplitude of the
noise
level
on
top or
bottom
of the
displayed
waveform
.
ff . Ground the 7A22 input using the input coupling
controls .
gg
.
Observe
that
the noise level
is the same ( i.e.
, that it
does not become smaller in peak - to - peak amplitude ) .
hh
.
Remove
the
connections to
the 7A22
Differential
Amplifier
.
6. Check Voltage Aberrations
a
. Replace
the 7A22
Differential
Amplifier with
a 7A26
Amplifier
plug - in
unit
.
b . Set the CG 5001 / CG 551AP controls as follows :
20 mV / D
UNITS
/ DIV
VARIABLE
Off
5
NUMBER OF
DIVISIONS
( MULTIPLIER )
FREQUENCY
TRIGGER OUTPUT
OUTPUT
USE FOR 50 LOAD
100 kHz
ON
ON
Off
c . Connect the CG 5001 / CG 551AP through the output
cable
assembly to
the
7A26 Amplifier
.
Connect the
TRIG
GER OUTPUT through a coaxial cable to the 7B80 EXT
U
D
U
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C
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7
C
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A
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7
C
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7
7
ņ
R
1
À
C
TRIG IN connector . Set 7A26 for 10 mV / DIV and adjust
7B80 controls and 7A26 Variable control for a stable 8 divi
sion
display
.
d . CHECK - that the preshoot and overshoot are less
than ± 2.0 major divisions ( ± 15 % ± 10 mV ) in amplitude
and less than 0.5 µs in duration .
e . Insert a
10X probe (
compensated
)
and bnc to
probe
tip adapter between the output cable and the input to the
7A26 . Set
7A26 for 5
VOLTS / DIV .
f . Change the CG 5001 / CG 551AP controls as follows :
FREQUENCY 10
kHz
UNITS / DIV
20 V / D
10 NUMBER OF DIVISIONS
(
MULTIPLIER )
g . Adjust 7A26 Variable control and 7B80 controls for a
stable
4
division
display
.
h .
CHECK -
that
the
preshoot and
overshoot
amplitude
are less
than
± 3
minor
divisions ( ± 3 V )
and less
than
5
µs
in duration .
i . Set the CG 5001 / CG 551AP UNITS / DIV control to
1 V / D and remove all connections to the CG 5001 /
CG 551AP .
UNITS
/ DIV
10
mA
10
mA
10 mA
1
mA
1
mA
NUMBER OF DIVISIONS
( MULTIPLIER )
10
10
10
10
1
Calibration - CG 5001 / CG 551AP , Vol . 2 , Performance Check
( SN
B050000 &
Above
)
CURRENT AMPLITUDE MODE
Equipment Required ( see footnotes following Ta
ble
5-1
)
Sampling System - TEKTRONIX 7904A / 7S11 / 7T11 / S - 6 .
Digital Voltmeter - Fluke Model 8500A / 8502A .
Function Generator - TEKTRONIX FG 503 .
Output Cable Assembly ( supplied with
CG
5001 /
CG
551AP
) .
5X Attenuator , 50 № .
Coaxial Cable , 50 № , bnc connectors .
Termination
, 50
,
precision
feedthrough
.
Termination
, 50
№ female ( SMA
) .
Adapter , SMA male to bnc female ( 2 required ) .
Adapter , bnc
female
to dual
banana .
7.
Check Dc
Current
Accuracy
and Range
a . Set the CG 5001 / CG 551AP controls as follows :
AMPLITUDE MODE
CURRENT
FREQUENCY
VARIABLE
OUTPUT
b .
Connect
the
CG 5001 / CG
551AP
OUTPUT through
the output cable assembly , precision 50 termination , and
appropriate adapter to the dc voltmeter .
c . Set the CG
5001 / CG 551AP
UNITS / DIV ,
NUMBER
OF DIVISIONS ( MULTIPLIER ) , and VARIABLE controls as
listed in Table 5-6 .
Table 5-6
DC CURRENT ACCURACY AND RANGE
d . CHECK that the voltmeter reads within the limits
listed in Table 5-6 .
DC
ON
ON
VARIABLE
( percent )
0.0
%
9.9 % LOW
9.9 % HIGH
0.0
%
0.0 %
Voltmeter
Reading
Lower Limit
4.9875 V
5.5356
V
4.5382 V
0.4987
V
49.77 mV
Upper
Limit
5.0125
V
5.5633
V
4.5610 V
0.5013 V
50.23 mV
5-9

Calibration - CG 5001 / CG 551AP , Vol . 2 , Performance Check
( SN
B050000 &
Above )
e . Disconnect the output cable assembly from the dc
voltmeter and remove the precision 50 2 termination .
8.
Check
Square
-
wave
Current
Accuracy
NOTE
Perform this
check
as
quickly
as
possible ;
Sampling
System drift ( in time ) may cause errors in the
measurements .
a . Change the CG 5001 / CG 551AP controls as follows :
UNITS / DIV 1
mA / D
NUMBER OF DIVISIONS
5
( MULTIPLIER )
VARIABLE
FREQUENCY
TRIGGER OUTPUT
Off
100 kHz
ON
b . Connect the CG 5001 / CG 551AP OUTPUT through
the output cable assembly to the S - 6 Sampling Head in
stalled in the 7S11 Sampling Unit . Terminate the S - 6 with
50 female ( SMA ) termination . Connect the CG 5001 /
CG 551AP TRIGGER OUTPUT through a coaxial cable to
the 7T11 Trigger Input connector .
c . Set the 7S11 and 7T11 to the settings listed in Table
5-5 . Change the 7T11 Time Pos Rng to 5 µs ; set Time / Div
to
.5
μs
.
d . Adjust the 7S11 Variable control for a displayed
waveform amplitude of 2 major divisions .
e . Change the 7S11 vertical deflection to 2 mV / div . Align
the top of the waveform exactly on the center horizontal
graticule
line .
f . Set the CG 5001 / CG 551AP FREQUENCY to DC . Dis
connect the cable connected to the CG 5001 / CG 551AP
TRIGGER OUTPUT and connect the cable to the FG 503
TRIG OUT connector . Set the FG 503 controls for a trigger
output of
approximately
100 kHz
.
g . CHECK - that the sweep trace ( dc level on the crt ) is
within 2.5
minor
divisions of the
center
horizontal
graticule
line .
h . Insert a 5X attenuator between the output cable as
sembly and the S - 6 Sampling Head .
5-10
i . Set the CG 5001 / CG 551AP controls as follows :
UNITS / DIV
20
mA
/ D
NUMBER OF DIVISIONS 5
(
MULTIPLIER )
FREQUENCY
TRIGGER OUTPUT
OUTPUT
100 kHz
ON
ON
j . Connect CG 5001 / CG 551AP TRIGGER OUTPUT to
7T11
Trigger
input
.
k . Set the 7S11 vertical deflection to 200 mV / div . Adjust
the 7S11 Variable control for a displayed waveform ampli
tude of 4 major divisions .
1. Set 7S11 vertical deflection to 2 mV / DIV . Align the top
of the waveform exactly on the center horizontal graticule
line .
m
.
Change the
CG
5001 / CG
551AP
FREQUENCY
to
DC . Remove the coaxial cable from the CG 5001 / CG 551AP
TRIGGER OUTPUT and connect it to the FG 503 TRIG
OUT connector . Set the FG 503 controls for a trigger output
of
approximately
100 kHz .
n . CHECK - that the sweep trace ( dc level on the crt ) is
within one major division of the center horizontal graticule
line .
o . Remove the 5X attenuator . Proceed to the next step .
9.
Check
Current
Droop
or Tilt
a . Set the CG 5001 / CG 551AP controls as follows :
UNITS
/ DIV
FREQUENCY
NUMBER OF DIVISIONS
1
( MULTIPLIER )
20 mA / D
100
kHz
b . Connect the CG 5001 / CG 551AP OUTPUT through
the
output cable
assembly
to the S - 6
Sampling Head
isntalled in the 7S11 Sampling Unit . Connect the CG 5001 /
CG 551AP TRIGGER OUTPUT through a coaxial cable to
the 7T11 Trigger Input connector .
c . Set the 7S11 vertical deflection to 200 mV / div . Adjust
the 7S11
Variable
control
for a
displayed
waveform ampli
tude
of 5 major
divisions .
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