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U1253B
Agilent Technologies U1253B
225 pages
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136
U1253B User’s and Service Guide
5M
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Figure 5-9
Fuse replacement
Ta
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5
-
4
Fuse specifications
Fuse
Agilent part number
Rating
Size
Ty
p
e
1
2
110-1400
440 mA/1000 V
10 mm × 35 mm
Fast blow fuse
2
2
110-1402
11 A/1000 V
10 mm × 38 mm
Fuse 1
Fuse 2
157
159
Table of Contents
Main Page
Default Chapter
2
Trademark Acknowledgements
2
Safety Symbols
3
General Safety Information
4
Environmental Conditions
6
In this Guide
9
Table of Contents
11
1 Getting Started
24
Introducing the Agilent U1253B True RMS OLED Multimeter
24
Check the Shipment
26
Adjusting the Tilt-Stand
27
Figure 1-3 Tilt-Stand at Hanging Position
29
The Front Panel at a Glance
30
Figure 1-4 U1253B Front Panel
30
The Rear Panel at a Glance
31
Figure 1-5 Rear Panel
31
The Rotary Switch at a Glance
32
Figure 1-6 Rotary Switch
32
Table 1-1 Rotary Switch Description and Functions
32
The Keypad at a Glance
33
Figure 1-7 U1253B Keypad
33
Table 1-2 Keypad Descriptions and Functions
34
The Display at a Glance
36
Table 1-3 General Display Symbols
36
Table 1-4 Primary Display Symbols
37
Table 1-5 Secondary Display Symbols
39
Table 1-6 Analog Bar Range and Counts
41
Selecting Display with the Shift Button
42
Table 1-7 Selecting Display with the Shift Button
42
Selecting Display with the Dual Button
43
Table 1-8 Selecting Display with the Dual Button
43
Selecting Display with the Hz Button
47
Table 1-9 Selecting Display with the Hz Button
47
The Terminals at a Glance
49
Figure 1-8 Connector Terminals
49
Table 1-10 Terminal Connections for Different Measurement
50
2 Making Measurements
51
Understanding the Measurement Instructions
52
Measuring Voltage
52
2 Making Measurements
52
Table 2-1 Numerical Steps Descriptions
52
Figure 2-1 Measuring AC Voltage
53
Measuring AC Voltage
53
Figure 2-2 Measuring DC Voltage
54
Measuring DC Voltage
54
Measuring Current
55
Μa and Ma Measurement
55
Figure 2-3 Measuring Μa and Ma Current
56
Percentage Scale of 4 Ma to 20 Ma
57
Table 2-2 Percentage Scale and Measurement Range
57
Figure 2-4 Measurement Scale of 4 Ma to 20 Ma
58
A (Ampere) Measurement
59
Figure 2-5 a (Ampere) Current Measurement
59
Frequency Counter
60
Figure 2-6 Measuring Frequency
61
Measuring Resistance, Conductance, and Testing Continuity
62
Figure 2-7 Type of Display When Smart
63
Figure 2-8 Measuring Resistance
64
Figure 2-9 Resistance, Audible Continuity, and Conductance
65
Table 2-3 Audible Continuity Measurement Range
66
Figure 2-10 Short Continuity and Open Continuity Test
67
Figure 2-11 Conductance Measurement
68
Testing Diodes
69
Figure 2-12 Measuring the Forward Bias of a Diode
70
Figure 2-13 Measuring the Reverse Bias of a Diode
71
Measuring Capacitance
72
Figure 2-14 Capacitance Measurements
73
Measuring Temperature
74
Figure 2-15 Connecting the Thermal Probe into the Non-Compensation Transfer Adapter
75
Figure 2-16 Connecting the Probe with Adapter into the
75
Figure 2-17 Surface Temperature Measurement
77
Alerts and Warning During Measurement
78
Overload Alert
78
Input Warning
79
Figure 2-18 Input Terminal Warning
79
Charge Terminal Alert
80
Figure 2-19 Charge Terminal Alert
80
Dynamic Recording
81
3 Functions and Features
82
Dynamic Recording
82
Figure 3-1 Dynamic Recording Mode Operation
83
Data Hold (Trigger Hold)
84
Figure 3-2 Data Hold Mode Operation
85
Refresh Hold
86
Figure 3-3 Refresh Hold Mode Operation
87
Null (Relative)
88
Figure 3-4 Null (Relative) Mode Operation
89
Decibel Display
90
Figure 3-5 Dbm Display Mode Operation
91
Figure 3-6 Dbv Display Mode Operation
92
Ms Peak Hold
93
Figure 3-7 1 Ms Peak Hold Mode Operation
94
Data Logging
95
Manual Logging
95
Figure 3-8 Manual (Hand) Logging Mode Operation
96
Figure 3-9 Full Log
96
Interval Logging
97
Figure 3-10 Interval (Time) Logging Mode Operation
98
Reviewing Logged Data
99
Figure 3-11 Log Review Mode Operation
100
Square Wave Output
101
Table 3-1 Available Frequencies for Square Wave Output
101
Figure 3-12 Frequency Adjustment for Square Wave Output
102
Figure 3-13 Duty Cycle Adjustment for Square Wave Output
103
Figure 3-14 Pulse Width Adjustment for Square Wave Output
104
Remote Communication
105
Figure 3-15 Cable Connection for Remote Communication
105
Selecting Setup Mode
107
4 Changing the Default Settings
108
Selecting Setup Mode
108
Default Factory Settings and Available Setting Options
109
Table 4-1 Default Factory Settings and Available Setting Options for
109
Figure 4-2 Data Hold/Refresh Hold Setup
113
Setting Data Hold/Refresh Hold Mode
113
Figure 4-3 Data Logging Setup
114
Setting Data Logging Mode
114
Figure 4-4 Log Time Setup for Interval (Time) Logging
115
Figure 4-5 Decibel Measurement Setup
116
Setting Db Measurement
116
Figure 4-6 Setting up the Reference Impedance for Dbm Unit
117
Setting Reference Impedance for Dbm Measurement
117
Figure 4-7 Thermocouple Type Setup
118
Setting Temperature Unit
118
Setting Thermocouple Types
118
Figure 4-8 Temperature Unit Setup
119
Figure 4-9 Setting up Percentage Scale Readout
120
Setting Percentage Scale Readout
120
Figure 4-10 Choosing the Sound Used in Continuity Test
121
Sound Setting for Continuity Test
121
Figure 4-11 Minimum Frequency Setup
122
Setting Minimum Measurable Frequency
122
Figure 4-12 Beep Frequency Setup
123
Setting Beep Frequency
123
Setting Auto Power off Mode
124
Figure 4-13 Automatic Power Saving Setup
125
Figure 4-14 Power-On Backlight Setup
126
Setting Power-On Backlight Brightness Level
126
Figure 4-15 Power-On Melody Setup
127
Figure 4-16 Power-On Greeting Setup
127
Setting the Power-On Greeting Screen
127
Setting the Power-On Melody
127
Figure 4-17 Baud Rate Setup for Remote Control
128
Setting Baud Rate
128
Figure 4-18 Data Bits Setup for Remote Control
129
Setting Data Bits
129
Figure 4-19 Parity Check Setup for Remote Control
130
Setting Parity Check
130
Figure 4-20 Echo Mode Setup for Remote Control
131
Setting Echo Mode
131
Figure 4-21 Print Mode Setup for Remote Control
132
Setting Print Mode
132
Figure 4-22 Revision Number
133
Figure 4-23 Serial Number
133
Revision
133
Serial Number
133
Figure 4-24 Voltage Alert Setup
134
Voltage Alert
134
M-Initial
135
Table 4-2 Available Settings for M-Initial
135
Figure 4-25 Setting Initial Measurement Functions
136
Figure 4-27 Editing Initial Measurement Function/Range
137
Figure 4-28 Editing Initial Measurement Function/Range and Initial Output Values
138
Figure 4-29 Refresh Rate for Primary Display Readings
139
Smooth Refresh Rate
139
Figure 4-30 Resetting to Default Factory Settings
140
Returning to Default Factory Settings
140
Figure 4-31 Battery Type Selection
141
Setting the Battery Type
141
Figure 4-32 DC Filter
142
Setting the DC Filter
142
5 Maintenance
143
Introduction
144
General Maintenance
144
Battery Replacement
145
Figure 5-1 9 V Rectangular Battery
145
Figure 5-2 Rear Panel of the Agilent U1253B True RMS OLED
146
Storage Considerations
147
Charging the Battery
148
Figure 5-3 Self-Testing Time Display
150
Table 5-1 Battery Voltage and Corresponding Percentage of Charg
150
Figure 5-4 Performing Self-Test
151
Table 5-2 Error Messages
151
Figure 5-5 Charging Mode
152
Figure 5-6 Fully Charged and in the Trickle State
153
Figure 5-7 Battery Charging Procedures
154
Fuse Checking Procedure
155
Figure 5-8 Fuse Checking Procedures
155
Table 5-3 U1253B Measurement Readings for Fuse Checking
156
Fuse Replacement
157
Figure 5-9 Fuse Replacement
158
Table 5-4 Fuse Specifications
158
Troubleshooting
159
Table 5-5 Basic Troubleshooting Procedures
160
Replaceable Parts
161
To Order Replaceable Parts
161
Calibration Overview
163
6 Performance Tests and Calibration
164
Calibration Overview
164
Closed-Case Electronic Calibration
164
Agilent Technologies' Calibration Services
164
Calibration Interval
165
Other Recommendations for Calibration
165
Recommended Test Equipment
166
Table 6-1 Recommended Test Equipment
166
Basic Operating Tests
167
Testing the Display
167
Figure 6-1 Displaying All OLED Pixels
167
Current Terminals Test
168
Figure 6-2 Current Terminal Error Message
168
Charge Terminals Alert Test
169
Figure 6-3 Charge Terminal Error Message
169
Test Considerations
170
Performance Verification Tests
171
Table 6-2 Performance Verification Tests
172
Calibration Security
178
Unsecuring the Instrument for Calibration
178
Figure 6-4 Unsecuring the Instrument for Calibration
180
Changing Calibration Security Code
181
Figure 6-5 Changing the Calibration Security Code
182
Resetting the Security Code to Factory Default
183
Figure 6-6 Resetting Security Code to Factory Default
184
Adjustment Considerations
185
Valid Adjustment Reference Input Values
186
Table 6-3 Valid Adjustment Reference Input Values
186
Calibration from Front Panel
190
Calibration Process
190
Calibration Procedures
191
Figure 6-7 Typical Calibration Process Flow
193
Table 6-4 List of Calibration Items
194
Calibration Count
198
Calibration Error Codes
199
Table 6-5 Calibration Error Codes and Their Respective
199
7 Specifications
201
Product Characteristics
201
Product Characteristics
202
Measurement Category
204
Measurement Category Definition
204
Specification Assumptions
205
Electrical Specifications
206
DC Specifications
206
AC Specifications
210
Table 7-2 Accuracy Specifications ± (% of Reading + Number of LSD) for True RMS AC Voltage
210
Table 7-3 Accuracy Specifications ± (% of Reading + Number of LSD) for True RMS AC Current
211
AC+DC Specifications
212
Table 7-4 Accuracy Specifications
212
Table 7-5 Accuracy Specifications ± (% of Reading + Number of LSD) for AC+DC Current
213
Capacitance Specifications
214
Table 7-6 Capacitance Specifications
214
Temperature Specifications
215
Table 7-7 Temperature Specifications
215
Frequency Specifications
216
Duty Cycle and Pulse Width Specifications
216
Table 7-8 Frequency Specifications
216
Table 7-9 Duty Cycle and Pulse Width Specifications
216
Frequency Sensitivity Specifications
217
Table 7-10 Frequency Sensitivity and Trigger Level Specifications for
217
Peak Hold Specifications
218
Table 7-11 Frequency Sensitivity Specifications for Current
218
Table 7-12 Peak Hold Specifications for DC Voltage and Current
218
Frequency Counter Specifications
219
Table 7-13 Frequency Counter (Divide by 1) Specifications
219
Table 7-14 Frequency Counter
219
Square Wave Output
220
Table 7-15 Square Wave Output Specifications
220
Operating Specifications
221
Display Update Rate (Approximate)
221
Table 7-16 Display Update Rate (Approximate)
221
Input Impedance
222
Table 7-17 Input Impedance
222
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