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34420A
Agilent Technologies 34420A User Manual
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2
Table of Contents
Default Chapter
7
The Rear Panel at a Glance
7
In this Book
8
Table of Contents
9
Chapter 1 Quick Start
13
Quick Start
14
To Prepare the Meter for Use
15
If the Meter Does Not Turn on
16
To Adjust the Carrying Handle
18
To Make Input Connections
19
To Measure Voltage
21
To Measure Resistance
22
To Measure Temperature with Thermistors
23
To Measure Temperature with Rtds
23
To Measure Temperature with Thermocouples
24
To Select a Range
25
To Set the Number of Digits
26
To Set the Integration Time
27
Front-Panel Display Formats
28
To Rack Mount the Meter
29
Chapter 2 Front-Panel Operation Front-Panel Menu Reference
33
A Front-Panel Menu Tutorial
35
To Select an Input Channel
43
To Select a Range
44
To Set or Change the Number of Digits
45
To Set the Integration Time
46
To Make Null (Relative) Measurements
47
To Store Minimum and Maximum Readings (Stats)
48
To Trigger the Meter
49
To Use Reading Hold
50
To Make Voltage Ratio and Difference Measurements
51
To Use Reading Memory
52
Features and Functions
56
Chapter 3 Features and Functions General Measurement Configuration
57
Input Filters
57
Integration Time
60
Reducing Measurement Noise
62
Number of Digits Displayed
64
Ranging
66
Overload Detection
67
Voltage Measurement Configuration
68
Input Channels
68
Resistance Measurement Configuration
70
Temperature Measurement Configuration
73
Measurement Units
73
RTD Measurements
74
Thermistor Measurements
74
Thermocouple Measurements
75
Chapter 3 Features and Functions (Continued)
75
Math Operations
76
Null (Relative) Operation
79
Reading Hold
81
Triggering
82
Trigger Source Choices
84
The Wait-For-Trigger State
87
Halting a Measurement in Progress
87
Number of Samples
88
Number of Triggers
88
Trigger Delay
89
Automatic Trigger Delays
91
System-Related Operations
92
Reading Memory
92
Error Conditions
94
Self-Test
95
Display Control
96
Comma Separators
97
Firmware Revision Query
97
SCPI Language Version
98
Voltmeter Complete Terminal
99
External Trigger Terminal
99
Chart Output (Analog Output)
100
Chart Rollover
102
Remote Interface Configuration
103
Remote Interface Selection
103
Gpib
104
HP-IB Address
104
Baud Rate Selection
105
Parity Selection
106
Programming Language Selection
107
Connection to a Terminal or Printer (RS-232)
108
Calibration
109
Calibration Security
109
Calibration Count
112
Calibration Message
113
Defaults, Power-On and Reset States
114
Chapter 4 Remote Interface Reference
117
Command Summary
119
Simplified Programming Sequence
128
Using the Measure? Command
130
Using the Configure Command
130
Using the Range and Resolution Parameters
131
Using the READ? Command
132
Using the Initiate and Fetch? Commands
133
The Measure? and Configure Commands
136
Setting the Function, Range, and Resolution
139
Selecting the Input Channel
142
Special Resistance Measurement Commands
143
Temperature Measurement Commands
144
Chapter 4 Remote Interface Reference (Continued)
144
Null (Relative) Commands
147
Input Filter Commands
148
Math Operation Commands
150
Statistics Operation Commands (Average)
151
Scale Operation Commands
152
Triggering
153
The Wait-For-Trigger State
155
Triggering Commands
156
Chart Output (Analog Out) Commands
158
System-Related Commands
159
The SCPI Status Model
161
What Is an Event Register
161
What Is an Enable Register
161
What Is a Condition Register
161
SCPI Status System
162
The Status Byte
163
Using Service Request ( SRQ ) and Serial POLL
164
Using *STB? to Read the Status Byte
165
To Interrupt Your Bus Controller Using
165
To Determine When a Command Sequence Is Completed
165
Srq
165
How to Use the Message Available Bit
166
Mav )
166
The Operational Status and Condition Registers
171
Status Reporting Commands
173
Calibration Commands
176
RS-232 Interface Configuration
178
RS-232 Configuration Overview
178
RS-232 Data Frame Format
179
Connection to a Computer or Terminal
179
Connection to a Printer
181
DTR / DSR Handshake Protocol
181
RS-232 Troubleshooting
183
RS-232 Interface Commands
184
An Introduction to the SCPI Language
185
SCPI Data Types
187
Input Message Terminators
188
Output Data Formats
188
Using Device Clear to Halt Measurements
189
TALK ONLY for Printers
189
To Set the HP-IB Address
190
Gpib
190
To Select the Remote Interface
191
To Set the Baud Rate
192
To Set the Parity
193
To Select the Programming Language
194
Alternate Programming Language Compatibility
195
Specific Issues
195
SCPI Compliance Information
196
IEEE-488 Compliance Information
199
Chapter 5 Error Messages
200
Error Messages
201
Execution Errors
202
Self-Test Errors
209
Calibration Errors
211
RS-232 Operations with Quickbasic
214
Chapter 6 Applicationprograms
215
HP BASIC Language Programs
215
HP BASIC / HP-IB Program Example 1
215
HP BASIC / HP-IB Program Example 2
216
HP BASIC / HP-IB Program Example 3
218
HP BASIC / HP-IB Program Example 4
221
Gpib
221
Gpib
223
Microsoft Visual Basic Language Program
224
Call Check_Srq
224
Errnum% = Hpibopen(Isc&, Hhpib%) Call Check_Srq
224
Errnum% = Hpibreset(Hhpib%, Isc&) Call Check_Srq
224
Errnum% = Hpibtimeout(Hhpib%, Isc&, Timeval#) Call Check_Srq
224
Rst$ = "*RST; *CLS; *SRE 32; *ESE
224
Errnum% = Hpiboutputs(Hhpib%, Device&, Rst$, Len(Rst$))
224
Errnum% = Hpiboutputs(Hhpib%, Device&, Route$, Len(Route$))
225
Take the Reading and Check for Errors
225
Errnum% = Hpiboutputs(Hhpib%, Device&, Reed$, Len(Reed$))
225
Errnum% = Hpiboutputs(Hhpib%, Device&, Null_Stmt$, Len(Null_Stmt$))
226
Errnum% = Hpiboutputs(Hhpib%, Device&, Reed$, Len(Reed$))
226
Errnum% = Hpibenter(Hhpib%, Device&, Reading!)
226
C Language Programs
231
Compiling and Linking a C Program
231
C / HP-IB Example 1
233
C Language Programs
233
C / HP-IB Example 2
235
C / HP-IB Program Example 3
239
Gpib Gpib Gpib
243
Excel Macro Example
243
Macro Comments
244
Chapter 7 Measurement Tutorial
247
Measurement Tutorial
248
Measurement Techniques and Sources of Error
249
Voltage Measurements
249
Resistance Measurements
258
Temperature Measurements
263
Cleaning the Connector Contacts
271
Input Connector
271
Input Connector
272
Obtaining Parts for the Input Connector
273
Chapter 8 Specifications
274
Accuracy Specifications
275
Measurement Characteristics
276
Operating Characteristics
277
To Calculate Total Measurement Error
280
Accuracy Specifications
281
Accuracy Specifications
282
Interpreting Meter Specifications
284
Number of Digits and Overrange
284
Sensitivity
284
Resolution
285
Accuracy
285
24-Hour Accuracy
286
90-Day and 1-Year Accuracy
286
Temperature Coefficients
286
Configuring for Highest Accuracy Measurements
286
Index
287
Declaration of Conformity
293
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Agilent Technologies 34420A Specifications
General
Brand
Agilent Technologies
Model
34420A
Category
Multimeter
Language
English
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