Оборудование информация

Fluke 7220A Счетчик
Производитель:
Fluke
Модель: 7220A
Дата:
Категория: Измерительная техника
Группа: Счетчик
Описание: Portable Counter
Информация:
                                    -2. The John Fluke Model 7220A is a nine-digit portable,
bench-type Counter that provides wide-range frequency
measurement capability up to 1300 MHz. There are two input
channels. The ac-coupled Channel A input allows frequency
measurements from 10 Hz to 125 MHz with I Megohm input
impedance. The Channel B input allows prescaled frequency
measurements of continuous wave or burst signals from I00
MHz to 1300 MHz with 50 ohm input impedance. Channel A
signal conditioning includes a X 10 fixed attenuator and a
X10 variable attenuator. For low frequency measurements, a
100 kHz low-pass filter may be selected. Four standard
resolution .settings and gate times may be selected that
allow resolution in decade steps from 100 Hz to 0.1 Hz. Four
additional resolution settings (up to .0001 Hz) are
available when the Resolution Multiplier Option-351 is
installed.

1-3. Measurements are displayed on a nine-digit LED display.
Three LED annunciators indicate gate time, measurement
overflow, and if optional oven time base is receiving power.
The 7220A may be operated with the standard 10 MHz timebase,
an optional TCXO (Temperature Compensated Crystal
Oscillator) time base, or either of two optional low power
oven time bases. A self check mode applies the time base
signal to the internal counters, thus providing a check for
most of the 7220A internal circuitry.

1-4. The 7220A is enclosed in a PTI (Portable Test
Instrument) case which includes an inner metal lining for
RF1 shielding. The counter may be operated at switch
selectable line voltages of 100V, 120V, 220V or 240V at
47-63 Hz, or with an optional battery pack.

1-5. OPTIONS AND ACCESSORIES

l-6. When the Battery Pack Option -0I0 is installed along
with one of the optional oven time bases, high
measurement accuracy is provided with portable convenience.
When the Digital Interface Option -521 is installed in the
7220A, serial BCD data is available at a rear panel output.
Option -521 also allows the counter to operate directly into
a Fluke 2020A, 2021 A, or 2030A Printer (with Option -004
installed in the Printer). When Option »521 is installed in
the 7220A, and it is used with a Fluke I120A Translator with
Option -522 installed (in the 1120A), the 7220A is
compatible with the IEEE-488 Bus. All of the options are
described in detail in Section 6. Tables 1-1 and 1-2 list
the available options and accessories for the 7220A.

Эти руководства доступны для вышеуказанного оборудования:

Fluke -- 7220A -- Обслуживание и Руководство пользователя
Имя файла: Fluke-8986-Manual-Page-1-Picture
Ручной тип: Обслуживание и Руководство пользователя
Страниц: 162
Размер: 6.19 Mbytes (6494003 Bytes)
Язык: английский
Редакция:
Руководство ID/номер:
Дата:
Качество: Сканированный документ, читая частично плохо, частично не читается.
Дата загрузки:
MD5: 63be1b37553e2a879919c4ee89635023
Загрузки: 17 начиная с 30 Апрель 2017
Информация:
1	INTRODUCTION AND
SPECIFICATIONS................................................1-1

l-l.
INTRODUCTION.........................................................................l-l

1-5. OPTIONS AND
ACCESSORIES......................................................1-1

1-7.
SPECIFICATIONS..............................................................................1-1

2	OPERATING
INSTRUCTIONS..........................................................2-1

2-1.
INTRODUCTION................................................................................2-1

2-3. SHIPPING INFORMATION
............................................................2-1

2-5.
INSTALLATION..................................................................................2-1

2-6. Input
Power..............................................................2-1

2-8. Fuse
Replacement..............................................................................2-1

2-10. Stacking PTI Instruments
.....................................2-1

2-12. Tilt-Down
Bail....................................................................................2-2

2-14. Rack
Installation...............................................2-2

2-16. OPERATING FEATURES
................................................................2-2

2-18. OPERATING
NOTES..........................................................................2-4

2-20. AC Line
Connection..........................................................................2-4

2-22. Maximum Input Levels
................................................................2-4

2-24. Counter
Terminology........................................................................2-7

2-26. ACCURACY..............................................2-7

2-28. One Count
Error................................................................................2-7

2-30. Signal Noise, Attenuation, and
Filtering........................................2-7

2-34, Time Base Error
..........................................................2-7

2-37. Total Error
Calculation....................................................................2-8

2-39.
OPERATION.....................................................................2-8

2-41. Initial
Procedure................................................................................2-8

2-43. Frequency Measurements — Channel
A........................................2-8

2-45. Frequency Measurements — Channel B
........................................2-9

2-47. Self Check Mode
(CHK)..................................................................2-10

2-49.	Turn Off
Procedure.........................................................................2-10

3	THEORY OF
OPERATION..............................................................................3-1

3-1.
INTRODUCTION................................................................................3-1

3-3. OVERALL FUNCTIONAL
DESCRIPTION..................................3-1

3-4.
Introduction.................................................3-1

3-6. Basic Counter Block
Diagram.....................................3-1
3-11. FUNCTIONAL BLOCK DIAGRAM......................3-2

3-13. Measurement Controls...................................3-2

3-15. Control
Logic...........................................3-2

3-17. Time Base and
Dividers..................................3-2

3-19. First Counter Flip Flop and Main Gate Flip
Flop............3-2

3-21. Counters...............................................3-2

3-23. Input Select
............................................3-4

3-25, Channel A Signal
Conditioners............................3-4

3-27. Resolution Multiplier Option -351
.........................3-4

3-29. Channel B Signal
Conditioners............................3-4

3-32. Self Check
.............................................3-4

3-34. Display Latch and
Multiplexer............................3-4

3-36. Display................................................3-4

3-38. Digital Interface Option -521
(DIO)........................ 3-4

3-40. LOGIC AND CIRCUIT ANALYSIS........................3-4

3-41. Power
Supply........................................... 3-4

3-45. Channel A Signal
Conditioners............................3-5

3-54. Channel B Signal Conditioners and
Prescaler................3-5

3-66. Input
Select............................................3-8

3-68. Time Base
Dividers......................................3-9

3-82. Control Logic
Sequencer.................................3-13

3-110.	Nine Digit Count and Display
.............................3-16

4 MAINTENANCE
................................................4-1

4-1.	INTRODUCTION........................................4-I

4-3. SERVICE INFORMATION................................4-I

4-6. GENERAL MAINTENANCE..............................4-1

4-7.	Disassembly............................................4-1

4-9. Reassembly.............................................4-3

4-11. Input Power............................................4-3

4-13. Fuse Replacement.......................................4-4

4-16. Cleaning...............................................4-4

4-18. PERFORMANCE CHECKS...............................4-4

4-20. Initial Set-up
...........................................4-4

4-22. Time Base and Time Base Output
Check....................4-5

4-24. Channel A Input Sensitivity
Check.........................4-5

4-26. Channel A Filter
Check.................................. 4-6

4-28. Attenuation Check
......................................4-7

4-30. Channel B Operation and BURST Check ...................4-7

4-32. External Clock Input Check
..............................4-7

4-34. Crosstalk
Check.........................................4-8

4-36. CALIBRATION ADJUSTMENTS..........................4-8

4-38. Power Supply Adjustment................................4-8

4-40. Channel A Trigger Level
Adjustment.......................4-11

4-42. Channel B Squelch
Adjustment.............................4-12

4-44. Standard Time Base
Calibration...........................4-12

4-46. Coarse Time Base
Adjustment..............:...............4-13

4-48. TROUBLESHOOTING....................*...............4-13

4-49.
Introduction............................................4-13

4-54. Visual
Inspection........................................4-14

4-56. Troubleshooting
Guide...................................4-14

4-58. Troubleshooting
Techniques..............................4-14
5	LIST OF REPLACEABLE PARTS .................................5-1

TABLE OF CONTENTS...................................5-I

5-1. INTRODUCTION........................................ 5-2

5-4. HOW TO OBTAIN PARTS................................5-2

6	OPTION AND ACCESSORIES...................................6-1

TABLE OF CONTENTS...................................6-1

7	GENERAL INFORMATION ......................................7-1

7A MANUAL CHANGE INFORMATION..............................7-1

8	SCHEMATIC DIAGRAMS........................................8-1

TABLE OF CONTENTS...................................8-i


Fluke-8986-Manual-Page-1-Picture
Начать скачать бесплатно




Отзывы

Отзывов пока нет.

Написать отзыв

* Обязательные поля
(не для публикации)
 
Bold Italic Underline Strike Superscript Subscript Quote Line Bullet Link Email Image Video
 
Smile Sad Huh Laugh Mad Tongue Crying Grin Wink Scared Cool Sleep Blush Unsure Shocked
 
1000
What is the next number: 10, 12, 14, ..?
 
Введите ответ:
 
Уведомлеть о новых коментариях по почте.
 
Запомнить данные формы на этом компьютере.
 
 
Работает на Commentics