Informacje o sprzęcie

Fluke PM6685 Licznik częstotliwości
Producent:
Fluke
Modelu: PM6685
Data: 2001
Kategorii: Przyrządy pomiarowe
Grupa: Licznik częstotliwości
Opis: Programmable Frequency Counter
Informacje:
                                    Introduction

Your PM6685 Counter is designed to bring you a new dimension
to portable and bench-top counting. It offers significantly
increased performance compared to traditional counters. The
Counter offers the following advantages:

-	Ten digits of frequency resolution per second and 250 ps
resolution, as a result of high-resolution interpolating
reciprocal counting

-	A 2.7 GHz input frequency option

-	A foolproof auto trigger function

New powerful and versatile functions

The unique versatile auto sensitivity and auto waveform
compensation takes care of all triggering from 50 Hz and up.
It even optimizes itself to the requirements of different
measuring functions.

Another unique feature in your instrument is the bar-graph
level monitor. It always shows you the input signal level on
a dB scale to verify proper signal strength.

The burst frequency and PRF functions measure bursts and AM
signals without any external synchronization signal.

To solve even tougher tasks, the counter has complete arming
possibilities which lets you synchronize measurements with
external events. You can even delay the arming of the
counter (compare to delayed time base triggering in an
oscilloscope). Read more about Arming in Chapter 7,
"Measurement Control”.

No mistakes

You will soon find that your new Counter is a delight to
operate. One example is the back
light LCD that shows you measurement results, setting
status, and operator messages. The AUTO function triggers
automatically on any input wave form. A bus-ieam mode
simplifies GPIB programming. With bus-leam mode, manual
counter settings can be transferred to the controller for
later reprogramming, There is no need to learn code and
syntax for each individual counter setting if you are an
occasional bus user.

Te Podręczniki są dostępne dla powyższego urządzenia:

Typ instrukcji: Instrukcja serwisowa Fluke-4781-Manual-Page-1-Picture
Stron: 94
Rozmiar: 2.15 Mbytes (2253647 Bytes)
Język: Angielski
Zmiana:
Podręcznik numer: 4822 872 20106
Data: maj 2003
Jakość: Dokument elektroniczny, bez skanowania, bardzo dobrze czytelne.
Data wysłania:
MD5: 5de372f41d3aafac18c32003734a1d48
Pliki do pobrania: 465 od 05 listopad 2013
Informacje:
This is a complementary service manual covering instruments with manufacturing numbers exceeding 840684. The principal
differences are to be found in Chapter 7 and in Chapter 8 due to a major redesign of the main PCB.
Do not dispose of the previous edition, identified by the part number, 4822 872 25012, and the publishing date, June 1996.
You may have to refer to it for information on older instruments as well as options not mentioned here.


1 Safety Instructions
2 Performance Check
General Information . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Recommended Test Equipment . . . . . . . . . . . . . . . . 2-2
Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Short Form Specification Test . . . . . . . . . . . . . . . . . . 2-3
Rear Input/Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Measuring Functions . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
3 Disassembly
Removing the Cover . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Reinstalling the Cover . . . . . . . . . . . . . . . . . . . . . . . . 3-2
PM9624 (HF Input) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
PM9626B (GPIB Interface) . . . . . . . . . . . . . . . . . . . . 3-3
PM9691 or PM9692 (Oven Oscillator) . . . . . . . . . . . 3-3
4 Circuit Descriptions
Block Diagram Description . . . . . . . . . . . . . . . . . . . . 4-2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Hardware Functional Description . . . . . . . . . . . . . . . 4-4
Front Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Rear Panel Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Optional Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Software Functional Description . . . . . . . . . . . . . . 4-15
Test Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
5 Repair
Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . 5-2
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
When to Replace the Fan
(PM6685R only ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Safety Inspection and Test After Repair . . . . . . . . . 5-9
General Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
6 Calibration Adjustments
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Input Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Reference Oscillators . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Other Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
7 Replacement Parts
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Mechanical Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Front Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
GPIB Interface (PM9626B) . . . . . . . . . . . . . . . . . . . 7-13
8 Drawings & Diagrams
How to read the diagrams. . . . . . . . . . . . . . . . . . . . . 8-2
9 Appendix
How to Replace Surface Mounted Devices. . . . . . . . 9-2
Electrostatic discharge . . . . . . . . . . . . . . . . . . . . . . . 9-3
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Power Supply Switchmode Module . . . . . . . . . . . . . 9-5
Circuit Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Calibration Adjustments . . . . . . . . . . . . . . . . . . . . . . 9-7
Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . 9-8
PM6685R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Performance Check . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Functional Description. . . . . . . . . . . . . . . . . . . . . . . 9-12
Calibration Adjustments . . . . . . . . . . . . . . . . . . . . . 9-13
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . 9-14
Fluke-4781-Manual-Page-1-Picture


Typ instrukcji: Instrukcja obsługi Fluke-10143-Manual-Page-1-Picture
Stron: 276
Rozmiar: 2.56 Mbytes (2688515 Bytes)
Język: Angielski
Zmiana:
Podręcznik numer:
Data: 01 styczeń 2000
Jakość: Dokument elektroniczny, bez skanowania, bardzo dobrze czytelne.
Data wysłania:
MD5: c8644ab9a721ad4e904f1a7cfe3ec16d
Pliki do pobrania: 110 od 20 styczeń 2018
Informacje:
Programming Manual

You should use this ProgrammingManual
 together
 with
 thePM6680B/1/5 Operators Manual.
That manual contains specificationsfor the counter and
explanations of
the possibilities and limitations of the
different measuring functions.
Sections
The chapters in this manual are di-
vided into three sections aimed at dif-
ferent levels of reader knowledge.
The ‘General’ Section, which can be
disregarded by the users who know
the IEEE-488 and SCPI standards:
– Chapter 2 Bus Commands for the
Benchtop User gives bus com-
mands for the front panel keys.
– Chapter 3 Introduction to SCPI
explains syntax data formats, sta-
tus reporting, etc.
The Practical Section of this manualcontains:
– Chapter 4, Programming Exam-
ples, with examples of typical pro-
grams for a wide variety of appli-
cations. These programs are writ-
ten in GW-basic and C.
This Manual
The ‘Programmers Reference’ Sec-
tion of this manual contains:
– Chapter 5, Instrument Model ex-
plains how the instrument looks
from the bus. This instrument is
not quite the same as the one used
from the front panel.
– Chapter 6 Using the Subsystems
explains more about each subsys-
tem.
– Chapter 7, How to Measure Fast
is a set of measuring situations
which the user is often confronted
with when programming a counter.
This chapter also contains infor-
mation about how to use the more
complex subsystem.
– Chapter 8, Error Messages con-
tains a list of all error messages
that can be generated during bus
control.
– Chapter 9, Command Reference,
This chapter gives complete infor-
mation on all commands. The sub-
systems and commands are sorted
alphabetically.
Fluke-10143-Manual-Page-1-Picture


Typ instrukcji: Instrukcja obsługi Fluke-10145-Manual-Page-1-Picture
Stron: 114
Rozmiar: 8.63 Mbytes (9049163 Bytes)
Język: Angielski
Zmiana: Fifth Edition
Podręcznik numer: 4822 87220033
Data: 01 lipiec 2001
Jakość: Skanowany dokument, wszystko czytelne.
Data wysłania:
MD5: 122fe631aa678313c95c5e3f390f2d05
Pliki do pobrania: 55 od 20 styczeń 2018
Informacje:
Warranty Statement..................I-V

1	Preface

Introduction........................1-2

Design Innovations..................1-2

New fast SCPI Bus..................1-4

Rubidium Counter...................1-4

2	Safety Instructions

Introduction........................2-2

Safety precautions...................2-2

3	Preparation for Use

Unpacking.........................3-2

Installation..........................3-2

4	Using the Controls

About This Chapter..................4-2

The User Interface...................4-2

Default Settings.....................4-3

Basic controls......................4-4

Input A controls.....................4-5

Measurement control keys............4-6

Display controls.....................4-7

..................................4-7

Display............................4-8

Display............................4-9

Rear Panel........................4-10

Rear Panel........................4-11

PM6685R Front Pane!...............4-12

5	input Signal Conditioning
Introduction to this chapter............5-2

Input A............................5-2

Input C............................5-6

Reducing Noise and Interference.......5-6

6	Measuring Functions

introduction to this chapter............6-2

Selecting function...................6-2

Frequency....................6-3

Introduction........................6-3

Burst Frequency and PRF.............6-6

AM Signals.......................6-10

Period.......................6-12

Introduction.......................6-12

Pulse Width and Duty Factor.... 6-13

Introduction.......................6-13

Pulse Width A.....................6-14

Duty Factor.......................6-14

Totalize......................6-15

TOTalize A .......................6-15

7	Measurement Control

About this chapter...................7-2

Measuring Time.....................7-2

Display Hold.......................7-3

Arming............................7-3

Digit Blanking.......................7-5

Controlling Measurement Timing . 7-6

Arming Set Up Time................7-12

Arming Examples.............7*13

Example #1:.......................7-13

Example #2.......................7-16

Example #3.......................7-17
8	Processing

Introduction........................8-2

Averaging.........................8-2

Nulling............................8-2

9	Auxiliary Functions

About this chapter...................9-2

Auxiliary Menu......................9-2

10	Performance Check

General Information ................10-2

Recommended Test Equipment.......10-2

Front Panel Controls................10-3

Short Form Specification Test.........10-5

Rear Input/Output..................10-6

Measuring Functions................10-7

PM9621, PM9624 and PM9625/25B____10-8

11	Preventive Maintenance

Calibration and adjustment...........11-2

Other Maintenance.................11-4

12	Specifications

Measuring Functions................12-2

Input and Output Specifications........12-3

Auxiliary Functions......................

12-4

GPiB (PM 9626B)..................12-5

Measurement Uncertainties.12-6

Time Base Options.................12-7

General Specifications...............12-8

Ordering information................12-8

13	Appendix

Appendix 1, Error Messages.........,13-2

14	Index

INDEX...........................14-11

15	Service Centers

Saies and Service office.............15-11
Fluke-10145-Manual-Page-1-Picture


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