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8842a
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Fluke 8842a User Manual Page 74
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TROUBLESHOOTING
BOOKMARKS
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Remote Programming
EXAMPLE
PROGR
AMS
3
3-33
f3-10.wmf
Figure 3-9. Example
Program
1
2
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Instruction Manual
1
Table of Contents
3
List of Tables
9
List of Figures
11
Contents
13
Chapter 1
15
1-1. INTRODUCTION
16
1-3. OPTIONS AND ACCESSORIES
16
1-4. SPECIFICATIONS
17
SPECIFICATIONS
19
Operating Instructions
26
2-1. INTRODUCTION
27
2-2. INSTALLATION
27
2-5. Adjusting the Handle
28
2-6. Rack Mounting Kits
28
2-7. OPERATING FEATURES
29
OPERATING FEATURES
30
Function
31
2-10. Display Features
33
2-11. Error Messages
33
2-12. Overrange Indication
35
2-13. Diagnostic Self-Tests
35
2-14. Ranging
35
2-15. AUTORANGE
35
2-16. MANUAL RANGE
36
2-17. Triggering
36
2-19. EXTERNAL TRIGGER MODE
36
2-24. MAKING MEASUREMENTS
38
2-29. Offset Measurements
39
2-30. EXTERNAL CLEANING
40
Remote Programming
42
3-1. INTRODUCTION
44
3-2. CAPABILITIES
44
3-3. BUS SET-UP PROCEDURE
44
3-5. A NOTE ABOUT EXAMPLES
47
B1 Offset On
48
PUT COMMAND FORMAT
49
N <value> P0
49
3-7. Bn (Offset Commands)
50
3-9. Dn (Display Commands)
50
3-10. Fn (Function Commands)
51
3-11. Get Commands
51
gain calibration
52
3-13. G1 (Get SRQ Mask)
53
DEVICE-DEPENDENT COMMAND SET
54
3-17. G5 (Get IAB Status)
55
3-18. G6 (Get YW Status)
55
3-19. G7 (Get Error Status)
55
3-22. Put Commands
56
3-24. P1 (Put SRQ Mask)
57
3-27. Rn (Range Commands)
58
3-32. Yn (Suffix Commands)
60
3-33. Z0 (Self-Test Command)
60
3-36. INPUT SYNTAX
61
3-37. Definitions
62
3-38. Input Processing
62
200 PRINT @3, "F4"
64
300 INPUT @3, A
64
200 INPUT @3, A
65
300 PRINT @3, "F4"
65
200 INPUT @3, A
65
3-42. Types of Output Data
66
3-44. MEASUREMENT DATA
66
3-45. OVERRANGE INDICATION
67
3-46. ERROR MESSAGES
67
3-47. Status Data
67
3-48. Output Priority
67
3-49. SERVICE REQUESTS
68
3-51. The SRQ Mask
69
3-52. INTERFACE MESSAGES
70
3-56. TALK-ONLY MODE
71
3-57. REMOTE CALIBRATION
72
3-58. TIMING CONSIDERATIONS
72
3-59. IMMEDIATE MODE COMMANDS
72
3-60. EXAMPLE PROGRAMS
73
EXAMPLE PROGRAMS
74
(interface clear)
91
4-1. INTRODUCTION
93
4-2. DC VOLTAGE MEASUREMENT
93
DC VOLTAGE MEASUREMENT
94
4-5. RESISTANCE MEASUREMENT
95
4-8. 4-Wire Ohms
96
4-10. TESTING DIODES
98
4-13. DC CURRENT MEASUREMENT
99
Measurement Tutorial
100
REDUCING THERMAL VOLTAGES
100
4-16. True RMS Measurement
101
4-17. Waveform Comparison
101
4-18. Crest Factor
103
4-21. Bandwidth
104
4-22. Zero-Input VAC Error
104
MEASUREMENTS
106
Theory of Operation
108
5-1. INTRODUCTION
110
5-4. DC SCALING
111
DC SCALING
112
5-5. VDC Scaling
113
5-6. VDC Protection
114
5-7. mA DC Scaling
114
5-8. Analog Filter
114
5-9. TRACK/HOLD CIRCUIT
115
TRACK/HOLD CIRCUIT
116
5-10. Track Configuration
117
5-11. Settling Configuration
118
5-12. Hold Configuration
118
5-15. OHMS CURRENT SOURCE
119
5-16. OHMS PROTECTION
120
5-17. OHMS FUNCTIONS
120
5-20. A/D CONVERTER
122
5-21. Timing/Data Control
124
5-22. Precision DAC
124
5-25. DISPLAY
125
5-26. KEYBOARD
126
5-27. DIGITAL CONTROLLER
126
5-28. In-Guard Microcomputer
128
5-31. Calibration Correction
130
5-35. GUARD CROSSING
131
5-36. POWER SUPPLY
132
5-38. Out-Guard Microcomputer
133
5-39. Guard Crossing
133
5-41. Signal Conditioning
134
5-44. VAC Scaling
134
5-45. mA AC Scaling
135
A Message From
136
PORTIONS REPRINTED
137
Maintenance
138
6-1. INTRODUCTION
140
6-2. PERFORMANCE TEST
141
local control
142
PERFORMANCE TEST
144
6-6. Resistance Test
145
2 = 4 ½ digit counts
146
6-9. CALIBRATION
147
6-11. INITIAL PROCEDURE
148
• Autoranging
149
CALIBRATION
150
6-18. VERIFYING CALIBRATION
154
6-20. TOLERANCE CHECK
155
6-23. Remote Calibration
157
6-24. TIMING CONSIDERATIONS
160
6-25. REMOTE ERASURE
161
6-27. DISASSEMBLY PROCEDURE
162
6-28. Case Removal
163
DISASSEMBLY PROCEDURE
164
6-31. Main PCA Removal
167
6-33. REASSEMBLY PROCEDURE
169
REASSEMBLY PROCEDURE
170
05 Only)
173
6-36. TROUBLESHOOTING
173
TROUBLESHOOTING
174
6-38. Diagnostic Self-Tests
178
6-39. Self-Test Descriptions
179
6-48. DISPLAY SYSTEM
185
6-59. ANALOG CONTROL SIGNALS
188
00000 11111 000000 000000 0 1
191
6-69. SERVICE POSITION
201
6-70. DIAGNOSTIC PROGRAM
201
6-72. SERVICE POSITION
203
6-73. MAJOR PROBLEMS
204
6-74. MORE OBSCURE PROBLEMS
206
6-76. INTERNAL CLEANING
207
INTERNAL CLEANING
208
List of Replaceable Parts
210
7-1. INTRODUCTION
212
7-2. HOW TO OBTAIN PARTS
212
7-4. NEWER INSTRUMENTS
213
7-5. SERVICE CENTERS
213
SERVICE CENTERS
214
Options and Accessories
230
8-1. INTRODUCTION
232
8-2. ACCESSORIES
233
8-10. Current Shunt (80J-10)
234
Option –05 IEEE-488 Interface
236
805-3. EXTERNAL CONTROLS
238
805-4. INSTALLATION
238
805-1. INTRODUCTION
238
805-2. CAPABILITIES
238
805-6. MAINTENANCE
239
LIST OF REPLACEABLE PARTS
240
Option –09 True RMS AC
244
809-1. INTRODUCTION
246
809-2. INSTALLATION
246
809-3. OPERATING INSTRUCTIONS
247
809-4. MAINTENANCE
247
Schematic Diagrams
252
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