Agilent Technologies 34420A Especificações Página 3
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The 34420A is a 7
1
/
2
digit, high performance nanovolt, micro-ohm
meter. Its combination of bench-top and system features makes this
meter a versatile solution for your testing requirements now and in the
future.
Convenient bench-top features
• Built-in math operations including thermistor, thermocouple and
RTD temperature measurements
• Two channel input allows ratio and difference functions for voltage
measurements
• Highly visible vacuum-fluorescent display
• Portable, ruggedized case with non-skid feet
Flexible system features
• HP-IB (IEEE-488) interface and RS-232 interface are standard
• SCPI (Standard Commands for Programmable Instruments) and
Keithley 181 compatibility
• Readings at up to 250 per second
HP 34420A
Nano Volt/Micro Ohm Meter
Agilent 34420A
GPIB
- Agilent 34420A 3
- The Front-Panel at a Glance 4
- Display Annunciators 6
- The Rear Panel at a Glance 7
- In This Book 8
- Contents 12
- Quick Start 13
- To Prepare the Meter For Use 15
- If the Meter Does Not Turn On 16
- 250 mAT fuse 17
- To Adjust the Carrying Handle 18
- To Make Input Connections 19
- Earth Ground (shell) 20
- To Measure Voltage 21
- To Measure Resistance 22
- EXTERNAL 24
- FIXED VALUE 24
- INTERNAL 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
- Front-Panel Operation 31
- Front-Panel Menu Reference 33
- Ø6:CAL COUNT Ø 7:MESSAGE 34
- A Front-Panel Menu Tutorial 35
- On/Off 37
- A: , B: , etc.) 37
- 1: , 2: , etc.) 38
- Recall 39
- On/Off 40
- NULL VALUE parameter 41
- Null 42
- To Select an Input Channel 43
- < or > 48
- To Trigger the Meter 49
- * (sample) annunciator is on 49
- To Use Reading Hold 50
- (Ch 1 voltage − Ch 1 Null ) 51
- To Use Reading Memory 52
- Features and Functions 55
- Input Filters 57
- Ø ANALOG Ø ANA + DIG 57
- Enter to enable the 58
- Integration Time 60
- Reducing Measurement Noise 62
- Number of Digits Displayed 64
- Sets the 10 Volt DC range 66
- Sets the 1 mV DC range 66
- Sets auto ranging on 66
- 2-wire resistance 66
- Overload Detection 67
- Input Channels 68
- − Ch 1 Null ) 69
- Measurement Units 73
- RTD Measurements 74
- Thermistor Measurements 74
- Thermocouple Measurements 75
- Math Operations 76
- Null (Relative) Operation 79
- Reading Hold 81
- Trigger Source Choices 84
- ‘Trig’ annunciator turns on 85
- Number of Samples 88
- Number of Triggers 88
- Trigger Delay 89
- ∨ until 90
- Enter 90
- Automatic Trigger Delays 91
- System-Related Operations 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 voltage 100
- = 0.001 100
- Chart Rollover 102
- Remote Interface Selection 103
- HP-IB Address 104
- Parity Selection (RS-232) 106
- Calibration 109
- Calibration Count 112
- Calibration Message 113
- or MEASure commands 114
- are enabled 116
- 100 mV ranges 116
- Remote Interface Reference 117
- Command Summary 119
- Status Reporting Commands 125
- Calibration Commands 126
- Remote Interface Commands 126
- IEEE-488.2 Common Commands 127
- <function> 129
- Using the MEASure? Command 130
- Using the CONFigure Command 130
- Using the READ? Command 132
- Selecting the Input Channel 142
- Null (Relative) Commands 147
- Input Filter Commands 148
- Math Operation Commands 150
- Scale operation commands 152
- First time SCPI users 153
- Triggering 154
- The Wait-for-Trigger State 155
- Triggering Commands 156
- System-Related Commands 159
- The SCPI Status Model 161
- SCPI Status System 162
- The Status Byte 163
- IEEE-488 bus 165
- IEEE-488 SRQ interrupt 165
- The Standard Event Register 167
- *PSC {0 175
- *SRE <enable value> 175
- CALibration:STRing? 177
- CALibration:VALue? 177
- RS-232 Configuration Overview 178
- RS-232 Data Frame Format 179
- Connection to a Printer 181
- DTR / DSR Handshake Protocol 181
- RS-232 Troubleshooting 183
- RS-232 Interface Commands 184
- SCPI) defines how 185
- IEEE-488.2 interface 186
- SCPI Data Types 187
- Input Message Terminators 188
- Output Data Formats 188
- TALK ONLY for Printers 189
- To Set the HP-IB Address 190
- To Set the Baud Rate 192
- To Set the Parity 193
- (Keithley 181) 194
- Specific Issues 195
- SCPI Compliance Information 196
- Messages 200
- Error Messages 201
- Execution Errors 202
- SEC is not a valid suffix) 203
- BUS and a READ? 204
- INTERRUPTED 206
- UNTERMINATED 206
- DEADLOCKED 206
- Self-Test Errors 209
- Calibration Errors 211
- Application 213
- Programs 213
- Application Programs 214
- HP BASIC Language Programs 215
- ... continued 217
- Agilent Control Libraries 224
- C Language Programs 231
- C / HP-IB Example 1 233
- C / HP-IB Example 2 235
- C / HP-IB Program Example 3 239
- Microsoft Excel Macro Example 243
- Macro Comments 244
- Measurement Tutorial 247
- Voltage Measurements 249
- Resistance Measurements 258
- ) − V 259
- 1 mA 10 mV 20, 100, or 500 mV 261
- Temperature Measurements 263
- Ice Bath 266
- N/A = Not Available 269
- Input Connector 272
- Part NumberDescription 273
- Specifications 274
- Chapter 8 Specifications 275
- MEASUREMENT CHARACTERISTICS 276
- OPERATING CHARACTERISTICS 277
- Dimensions 279
- Sensitivity 284
- Resolution 285
- Accuracy 285
- 24-Hour Accuracy 286
- 90-Day and 1-Year Accuracy 286
- Temperature Coefficients 286
- DECLARATION OF CONFORMITY 293
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