Tektronix TG501 User manual

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TABLE OF CONTENTS
Page
LIST
OF
ILLUSTRATIONS ... .............. ............ ................. . .

ii
TG 501
REVD AUG 1980

i
Section 1 Specification . ... ......... ............ ................. . .
1-1
Section 2
Operating Instructions ......... ........... ................. 2-1
WARNING
THE FOLLOWING SERVICE INSTRUCTIONS ARE FORUSE BYQUALIFIED
PERSONNEL ONLY . TO AVOID PERSONAL INJURY, DO NOT
PERFORM
ANY SERVICING OTHER THAN THAT
CONTAINED IN OPERATING
INSTRUCTIONS UNLESS YOU ARE
QUALIFIED
TO DOSO .
Section 3
Theory
of
Operation . . ........... ........... ............... 3-1
Section 4 Calibration Procedure . ............ ........... ............. .
4-1
Performance Check
. . . ......... ........... ..... . . . ...... 4-1
Adjustment Procedure
. ......... ........... .... .... ...... 4-5
Section s
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
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TG 501
LIST O F
ILLUSTRATIONS
Figure
No .
Page
2-1
Plug-in installation and removal ...... ......... ................
2-1
2-2 Controls and Connectors
. . ........... .......... ............
2-2
2-3 Timing
error of time base ... .............
........ ...........
2-3
2-4 Measuring timing error of
time base . .......... ............ ..... 2-3
2-5
Markers approximately at pulse duration and
period
................
2-4
2-6 Measuring pulse duration .......... ..........
...............
2 - 4
2-7
Measuring pulse period ..... .......... . . .........
.........
.
. . 2-5
3-1
Functional Block Diagram of schematic diagrams
1 and 2 circuitry . . .... 3-3
3-2 Functional
Block Diagram of
schematic diagram 3 circuitry . ..........
3-5
3-3 Functional
Block Diagram of schematic diagram 4 circuitry ...........
3-7
3-4
Functional Block Diagram of
schematic diagram 5 circuitry ...........
3-9
5-1
Semiconductor device lead configuration
found in the TM 500 family .... 5-5
5-2
Location of jumpers and integrated
circuits required for clock options . . . 5-9
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TG 501
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 .
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 .
Terms In This Manual Danger Arising From Loss of Ground
CAUTION statements identify conditions
or
practicesthat
could result i n damage to the equipment or other property .
WARNING statements identify conditions or practices
that could result in personal injury or loss of life .
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 .
Terms 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 .
Use the Proper Power Cord
Use only the power cord and connector specified
for
your
product .
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 .
Use only a power cord that is in good condition .
Refer cord and connector changes to qualified service
personnel .
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
.
Power Source
Refer fuse replacement to qualified service personnel .
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 byway of the
grounding conductor in the power cord is essential for
safe operation .
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 .
Grounding the Product
This product is grounded through the grounding conduc-
tor of the power
cord . To
avoid
electrical shock, plug
the
Do Not Operate Plug-In Unit 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 .
@ AUG 1980
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Do Not Service
Alone
SERVICE SAFETY SUMMARY
FOR QUALIFIED SERVICE PERSONNEL
ONLY
Refer also to the precedingOperators
Safety Summary .
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 andcomponents
while power is on .
@ AUG 1980
TG 501
Disconnect
power before removing protective panels,
soldering, or replacing components .
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
byway
of
the
grounding conductor in the power cord
is essential for
safe operation .
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TG 501 Time Mark
Generator
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Description
The TG 501 is a general purpose Time Mark Generator
plug-in
designed to operate in a TM 500 Series Power
Module . A Variable Timing Readout provides a simple but
accurate
means
of measuring timing errors over t7 .5%
minimum range . Since many specifications are given in
percentages, the error readout eliminates the need for
computations and, additionally, lessens parallax dis-
crepancies
.
Marker selection from 5 s through 1 ns in a 1, 2, 5,
sequence is available
. 5 s through 10 ns markers are
selected by a rotary switch . 5, 2, and 2
ns modified sine
REV D SEP 1980
SPECIFICATION
INTRODUCTION
Table 1-1
ELECTRICAL CHARACTERISTICS
Section 1-TG 501
waves are selected by self-canceling push-buttons
when
the rotary switch is in the 521n position .
All outputs are available at the
front-panel connectors,
or by modification at the interface connector,
located at
the back of the plug-in, and the TM 500 Series Power
Module .
Power supplies are current limited
. The 5 V supply is
over-voltage protected to avoid
damage to the integrated
circuits .
Characteristics Performance Requirements Supplemental
Information
Markers
5 s through 1 ns in a 1, 2, 5 5 s through 10 ns are selected
sequence .
by a rotary switch . 5 ns, 2 ns,
and 1
ns are push button selected
modified sine
waves .
Marker Amplitude
>1 V peak on 5 s .through 10 ns
markers . >750 mV peak-to-peak into
50 O on 5 ns and 2 ns markers
.
>200 mV peak-to-peak into 50 S2
on 1 ns markers .
Trigger Output Signal
Slaved to marker output from 5 s Amplitude same as marker amplitude .
through 100 ns . Remains at
100 ns
for all faster markers .
Internal Reference Standard Option 01
Crystal
Frequency 1 MHz 5 MHz
Stability (0°C to +50°C) Within 1 part Within
5 parts
after 1/2 hour warm-up in 10 5 in 10'
Long-Term Drift
1 part or less 1 part or less
in 10 5 per in 10' per
month month
Setability Adjustable to Adjustable to
within 1 part within 5 parts
in 10' in 10 9
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Specification-TG
501
Table 1-1 (cont)
Table 1-2
ENVIRONMENTAL
CHARACTERISTICS
REVD
AUG 1980
Characteristics
Performance
Requirement
Supplemental
Information
External Reference
Input
Lift pin
3 of U350 from socket
;
(Available Only
if U50 and
IC
and jumpers for 5 or
10 MHz,
jumpers are
installed and U100
1 MHz external
reference requires
is removed)
jumpers .
Acceptable Frequencies
1 MHz, 5
MHz, or 10 MHz .
Internally hard wired so
output
frequencies
counted down to 1 MHz .
Input
Amplitude
Must
be TTL,
compatible .
Error
Readout Range
To±7
.5% .
Timing
Error
Measurement
Device under
test error is
Example : If DUT Timing
error reads
Accuracy
indicated
to within one
least 3
.0% slow, the absolute
accuracy
significant digit (i .e .,
to
will be between
2 .9%and 3 .1%
within one
displayed count) .
slow .
Characteristics
Description
Meets
MIL-T-288008, class 5 .
Temperature
Operating
0° C to +50° C
Non-operating
-55° C to
+75° C
Humidity
95%
RH, 0°C to 30°C
Exceeds MIL-T-288008,
class 5 .
75%
RH, 30° C to 40° C
45% RH, 40° C to
50° C
Altitude
Exceeds MIL-T-288008,
class 5 .
Operating
4 .6
Km (15,000 ft)
Non-operating
15 Km (50,000
ft)
Vibration
0 .38
mm(0 .015 inch
peak-
Exceeds
MIL-T-28800B, class
5,
to-peak,
5 Hz to
55 Hz,
when
installed in qualified
75 minutes .
power modules .
Shock
30 g's
(1 /2 sine)
11 ms
Meets
MIL-T-288008, class 5,
duration, 3
shocks in each
when
installed in qualified
direction
along 3 major
axes,
power modules .
18 total
shocks .
Bench Handling
12
drops from 45°,
4 inch
Meets
MIL-T-2880013, class 5 .
or
equilibrium,
whichever
occurs first .
Transportation
Qualified
under National
Safe Transit
Association
Preshipment Test
Procedures
1A-B-1
and 1A-B-2 .
EMC
Within limits of
MIL-461A, and
F .C
.C
. Regulations,
Part 15, Subpart
J,
Class A .
Electrical
Discharge
_ t20
kV maximum c harge
applied to
instrument case .
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