Fluke 8842A Manuals

Fluke 8842A Manuals

Manuals and User Guides for Fluke 8842A. We have 2 Fluke 8842A manuals available for free PDF download: Instruction Manual, Getting Started

Fluke 8842A Instruction Manual

Fluke 8842A Instruction Manual (269 pages)

Brand: Fluke | Category: Multimeter | Size: 13 MB

Table of Contents

Instruction Manual
1
Table of Contents
3
Title Page
15
Introduction and Specifications

15
- Introduction
  16
- The 8842A Digital Multimeter
  16
- Options and Accessories
  16
- Specifications
  17
- External Dimensions
  17
  - Introduction
    25
  - Adjusting the Handle
    26
  - Connecting to Line Power
    27
  - Installation
    27
  - Installing the Power-Line Fuse
    27
  - Introduction
    27
  - Adjusting the Handle
    28
  - Installation
    26
  - Introduction
    26
Operating Instructions

26
- Rack-Mount Kits
  28
  - Rack Mounting Kits
    28
  - Operating Features
    29
  - Power-Up Features
    29
  - Front and Rear Panel Features
    29
- Installing the Single Rack Mount Kit
  29
- Front Panel Features
  30
- Rear Panel Features
  32
- Typical Error Messages
  33
  - Display Features
    33
  - Error Messages
    33
- Error Codes
  34
  - Overrange Indication
    35
  - Diagnostic Self-Tests
    35
  - Ranging
    35
    
    Autorange
    35
    
    Manual Range
    36
  - Triggering
    36
    
    Continuous Trigger Mode
    36
    
    External Trigger Mode
    36
  - Reading Rates and Noise Rejection
    36
  - Overrange Indication
    37
  - Automatic Settling Time Delay
    37
  - External Trigger Input (Option -05 Only)
    37
  - Sample Complete Output (Option -05 Only)
    37
  - Making Measurements
    38
  - Input Overload Protection Limits
    38
  - Measuring Voltage and Resistance
    38
  - Measuring Current
    38
  - Current Fuse Protection
    38
  - Offset Measurements
    39
  - External Cleaning
    40
  - Measuring Voltage and Resistance
    40
  - Measuring Current
    40
Remote Programming

42
- Introduction
  44
- Capabilities
  44
- Bus Set-Up Procedure
  44
- An Overview of Remote Operation
  45
- IEEE-488 Address Selection
  45
- Remote Operation Block Diagram
  46
  - A Note about Examples
    47
  - Device-Dependent Command Set
    47
- Typical Command String
  47
- Commands Which Correspond to the Front Panel
  48
- Device-Dependent Command Set
  49
Chapter 3

50
- Bn (Offset Commands)
  50
- Cn (Calibration Commands)
  50
- Dn (Display Commands)
  50
- Fn (Function Commands)
  51
- Output Data Format
  51
  - Get Commands
    51
  - Status Data
    52
  - G0 (Get Instrument Configuration)
    53
  - G1 (Get SRQ Mask)
    53
  - G2 (Get Calibration Prompt)
    53
  - G3 (Get User-Defined Message)
    54
  - G4 (Get Calibration Status)
    54
  - G5 (Get IAB Status)
    55
  - G6 (Get YW Status)
    55
  - G7 (Get Error Status)
    55
  - G8 (Get Instrument Identification)
    56
  - N (Numeric Entry Command)
    56
  - Put Commands
    56
  - P0 (Put Instrument Configuration)
    56
  - P1 (Put SRQ Mask)
    57
  - P2 (Put Calibration Value)
    57
  - P3 (Put User-Defined Message)
    58
  - Rn (Range Commands)
    58
  - Sn (Reading Rate Commands)
    58
- Trigger Selection Logic Diagram
  59
  - Tn (Trigger Mode Commands)
    59
  - Wn (Terminator Commands)
    60
  - X0 (Clear Error Register Command)
    60
  - Yn (Suffix Commands)
    60
  - Z0 (Self-Test Command)
    60
  - Device-Clear Command)
    61
  - (Single-Trigger Command)
    61
  - Input Syntax
    61
  - Definitions
    62
  - Input Processing
    62
- Interpretation of Messages
  63
  - Syntax Rules
    64
  - Output Data
    65
  - Loading Output Data
    65
  - Types of Output Data
    66
  - Numeric Data and Error Messages
    66
    
    Measurement Data
    66
- Numeric Output Data Format
  66
  - Overrange Indication
    67
  - Error Messages
    67
  - Status Data
    67
  - Output Priority
    67
  - Service Requests
    68
  - The Serial Poll Register
    68
  - The SRQ Mask
    69
- Serial Poll Register
  69
  - Interface Messages
    70
  - Address Messages
    70
  - Universal Commands
    70
  - Addressed Commands
    71
  - Talk-Only Mode
    71
  - Remote Calibration
    72
  - Timing Considerations
    72
  - Immediate Mode Commands
    72
  - Example Programs
    73
- Immediate-Mode Commands for Various Controllers
  73
  - Example Programs
    74
- Example Program: Taking Readings with Local Control
  75
- Example Program: Using the Serial Poll Register
  76
- Example Program: Record Errors During Selftest
  77
- Example Programs: Using the IBM PC
  78
- ASCII/IEEE Std 488-1978 Bus Codes
  90
Measurement Tutorial

92
Chapter 4

93
- Introduction
  93
- DC Voltage Measurement
  93
- Circuit Loading Error
  93
- Circuit Loading Error Calculation
  93
- Input Bias Current Error
  94
- Measuring Input Bias Current Error
  94
- Resistance Measurement
  95
- 2-Wire Ohms
  95
- Wire Ohms Measurement
  95
- Correcting for Test Lead Resistance in 2-Wire Ohms
  96
- 4-Wire Ohms
  96
- Ohms Test Current
  97
- Wire Ohms Measurement
  97
  - Applications of the Ohms Functions
    98
    
    Testing Diodes
    98
    
    Testing Electrolytic Capacitors
    98
    
    A Precision Current Source
    99
  - DC Current Measurement
    99
  - Reducing Thermal Voltages
    100
- Burden Voltage Error Calculation
  100
  - Ac Voltage and Current Measurement
    101
  - True RMS Measurement
    101
  - Waveform Comparison
    101
- Waveform Comparison Chart
  102
  - Crest Factor
    103
  - AC-Coupled AC Measurements
    103
  - Combined AC and DC Measurements
    104
  - Bandwidth
    104
  - Zero-Input VAC Error
    104
  - MAKING ACCURATE MEASUREMENTS on the 20 MV and 20 RANGES
    105
- Reduction of Zero-Input Error
  105
  - MAKING ACCURATE MEASUREMENTS on the 20 MV
    105
  - Making Accurate High-Resistance Measurements
    106
- Shielding for Low Voltage Measurements
  106
- Shielding for Low Resistance Measurements
  106
- Leakage Resistance in High Resistance Measurement
  107
Theory of Operation

108
Chapter 5

110
- Introduction
  110
- Overall Functional Description
  110
- Detailed Circuit Description
  111
- DC Scaling
  111
- Overall Functional Block Diagram
  112
  - VDC Scaling
    113
  - VDC Protection
    114
  - Ma DC Scaling
    114
  - Analog Filter
    114
  - Track/Hold Circuit
    115
- Track/Hold Amplifier
  115
- Track/Hold Circuit Configurations
  116
  - Track Configuration
    117
- Timing Diagram for One A/D Cycle
  117
  - Settling Configuration
    118
  - Hold Configuration
    118
  - Pre-Charge Configuration
    118
  - Precision Voltage Reference
    118
  - Ohms Current Source
    119
  - Ohms Protection
    120
  - Ohms Functions
    120
  - 2-Wire Ohms
    120
- Ohms Scaling
  121
  - 4-Wire Ohms
    122
  - A/D Converter
    122
- Analog-To-Digital Converter
  123
  - Timing/Data Control
    124
  - Precision DAC
    124
- First Remainder-Store Period
  124
  - A/D Amplifier
    125
  - Bootstrap Supplies
    125
  - Display
    125
- Autozero Period
  125
  - Keyboard
    126
  - Digital Controller
    126
- Vacuum Fluorescent Display
  126
- Digital Controller Block Diagram
  127
  - In-Guard Microcomputer
    128
- Read/Write Timing Diagrams for Internal Bus
  129
  - Function and Range Control
    130
  - A/D Control and Computation
    130
  - Calibration Correction
    130
- Sample Rates and Reading Rates
  130
  - Keyboard/Display Control
    131
  - Troubleshooting Modes
    131
  - Guard-Crossing Communication
    131
  - Guard Crossing
    131
  - Guard Crossing Circuit
    131
  - Power Supply
    132
  - Ieee-488 Interface (Option -05)
    133
  - Out-Guard Microcomputer
    133
  - Guard Crossing
    133
  - IEEE-488 Interface Block Diagram
    133
  - Bus Interface Circuitry
    133
  - Signal Conditioning
    134
  - IEEE-488 Interface Power Supply
    134
  - True Rms Ac (Option -09)
    134
  - True RMS AC Option Block Diagram
    134
  - VAC Scaling
    134
  - Ma AC Scaling
    135
  - Frequency Response Trimming
    135
  - True RMS AC-To-DC Conversion
    135
- True RMS AC-To-DC Converter
  135
Maintenance

138
Chapter 6

140
- Introduction
  140
- Recommended Test Equipment
  140
  - Performance Test
    141
  - Diagnostic Self-Tests
    141
  - DC Voltage Test
    142
- DC Calibration Connections
  143
- DC Voltage Test
  143
  - AC Voltage Test (Option -09 Only)
    144
  - Low- and MID-Frequency AC Voltage Test
    144
  - Resistance Test
    145
- High-Frequency AC Voltage Test
  145
  - DC Current Test
    146
- Resistance Test
  146
  - AC Current Test (Option -09 Only)
    147
  - Calibration
    147
  - Basic Calibration Procedure
    148
    
    Initial Procedure
    148
- First A/D Calibration Prompt
  148
  - A/D Calibration
    149
- Calibration Functions
  149
- A/D Calibration Steps
  150
- A/D Calibration Verification Test
  150
  - Offset and Gain Calibration
    151
  - Offset and Gain Calibration Steps
    151
  - High-Frequency Ac Calibration
    152
  - Advanced Features and Special Considerations
    153
    
    Storing Variable Inputs
    153
- High-Frequency AC Calibration Steps
  153
  - Calibrating Individual Ranges
    154
  - Verifying Calibration
    154
  - Prompts When Calibrating Individual Ranges
    154
  - Erasing Calibration Memory
    155
  - Tolerance Check
    155
  - Ac Calibration at Other Frequencies
    156
  - Optimizing Use of the 5450A
    156
- Tolerance Limits
  156
  - Optimizing Use of the 5450A
    157
  - Remote Calibration
    157
- Commands Used During Remote Calibration
  158
  - Timing Considerations
    160
- Error Numbers Which Are Displayed When Commands Are Not Valid
  160
  - Remote Erasure
    161
  - Example Calibration Program
    161
  - Disassembly Procedure
    162
- Example A/D Calibration Program
  162
  - Case Removal
    163
- A Disassembly
  163
  - True RMS AC PCA Removal (Option -09 Only)
    167
  - IEEE-488 Interface PCA Removal (Option -05 Only)
    167
  - Main PCA Removal
    167
  - Front Panel Disassembly
    169
  - Reassembly Procedure
    169
  - Front Panel Disassembly
    171
- Removing the Display Window
  172
- Overall State Table
  175
- Circuitry Tested by the Analog Self-Tests
  177
  - Diagnostic Self-Tests
    178
  - Self-Test Descriptions
    179
- Self-Test Voltages
  179
  - Digital Controller Troubleshooting
    182
    
    In-Guard Microcomputer System
    182
- U202 Pin Diagram
  183
- Waveforms for In-Guard Troubleshooting Mode
  184
  - Display System
    185
- Waveforms for Display Logic
  186
  - Analog Control Signals
    188
- Keyboard Wiring
  188
- Analog Control Devices
  189
- Analog Control Logic States
  190
  - DC Scaling Troubleshooting
    191
- Typical Dynamic Control Signals
  191
- DC Scaling and Track/Hold Supply Voltages
  192
  - Track/Hold Troubleshooting
    193
  - Ohms Current Source Troubleshooting
    193
- Typical Output Waveforms for Track/Hold Circuit (TP103)
  194
  - Precision Voltage Reference Troubleshooting
    195
  - A/D Converter Troubleshooting
    196
- Output of A/D Amplifier (TP101)
  196
- Waveforms at U101-24 and U101-25
  197
- Typical Bus Data Line Waveform
  197
  - Power Supply Troubleshooting
    198
- Waveforms at TP102 for Several Inputs on 2V DV Range
  199
- Power Supply Voltages
  200
- Calculating the A/D Reading from TP102 Waveform
  200
  - IEEE-488 Interface Troubleshooting (Option -05)
    201
    
    Service Position
    201
    
    Diagnostic Program
    201
- Diagnostic Modes
  202
- Option -05 Service Position
  202
  - True RMS AC Troubleshooting (Option -09)
    203
- I/O Port Configurations
  203
  - Service Position
    203
  - Major Problems
    204
- Isolating a Defective AC Stage
  204
- AC Signal Tracing
  205
- Option -09 Service Position
  205
  - More Obscure Problems
    206
- Truth Table for U804 and K2
  206
  - Guard Crossing Troubleshooting
    207
  - Internal Cleaning
    207
  - Cleaning Printed Circuit Assemblies
    207
  - Cleaning after Soldering
    208
- Guard Crossing Test Waveforms
  208
List of Replaceable Parts

210
- Introduction
  212
- How to Obtain Parts
  212
- Manual Status Information
  212
- Newer Instruments
  213
- Service Centers
  213
- A Digital Multimeter
  214
- A Digital Multimeter
  215
- A1 Main PCA
  219
- A1 Main PCA
  222
- A2 Display PCA
  223
- A2 Display PCA
  224
- Service Centers
  227
- Service Centers (Cont)
  228
Options and Accessories

230
Chapter 8

232
- Accessories
  232
- Introduction
  232
- Options
  232
  - Accessories
    233
  - Rack-Mount Kits (Y8834, Y8835 and Y8836)
    233
  - Shielded IEEE-488 Interface Cables (Y8021, Y8022, and Y8023)
    233
  - Replacement Test Leads (TL70A)
    233
  - Deluxe Test Lead Kits (Y8134)
    233
  - Slim-Flex Test Leads (Y8140)
    233
  - Temperature Probes (80T-150U, and 80TK.)
    233
  - RF Probes (85RF and 83RF)
    233
  - Current Shunt (80J-10)
    234
  - Current Probes (Y8100, Y8101, 80I-400 and 80I-600)
    234
  - High Voltage Probes (80K-6 and 80K-40)
    234
  - Option –05 IEEE-488 Interface
    236
  - Introduction
    238
  - Capabilities
    238
  - External Controls
    238
  - Installation
    238
  - Programming Instructions
    239
  - Maintenance
    239
  - List of Replaceable Parts
    239
- Installing Option -05
  240
- Option -05A IEEE-488 Interface PCA
  242
- IEEE-488 Interface PCA
  243
Option -09 True RMS AC

244
- Introduction
  246
- Installation
  246
- Operating Instructions
  247
- Maintenance
  247
- List of Replaceable Parts
  247
- Installing Option -09
  248
- Option -09 True RMS AC PCA
  249
- True RMS AC PCA
  250
Schematic Diagrams

252
- Main PCA, DC Scaling and F/R Switch
  254
- Main PCA, A/D Converter
  256
- Main PCA, Ohms Current Source
  258
- Main PCA, Digital
  260
- Main PCA, Power Supply
  262
- Display PCA
  264

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Fluke 8842A Getting Started

Fluke 8842A Getting Started (31 pages)

Brand: Fluke | Category: Multimeter | Size: 0 MB

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