Agilent-technologies 34401A Manuel d'utilisateur Page 93
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Display Control
To speed up your measurement rate, or for security reasons, you may
want to turn off the front-panel display. From the remote interface, you
can also display a 12-character message on the front panel.
• When the display is turned off, readings are not sent to the display
and all display annunciators except
ERROR and Shift are disabled.
Front-panel operation is otherwise unaffected by turning off the display.
• The display state is stored in volatile memory; the display is enabled
when power has been off or after a remote interface reset.
• You can display a message on the front panel by sending a
command from the remote interface. The multimeter can display up
to 12 characters of the message on the front panel; any additional
characters are truncated. Commas, periods, and semicolons share a
display space with the preceding character, and are not considered
individual characters. When a message is displayed, readings are not
sent to the display.
• Sending a message to the display from the remote interface overrides
the display state; this means that you can display a message even if
the display is turned off.
• Front-Panel Operation:
5: DISPLAY (SYS MENU)
The display always turns on for menu operation; this means that
even when the display is turned off, you can still operate the menu.
• Remote Interface Operation:
DISPlay {OFF|ON} disable/enable the display
DISPlay:TEXT <
quoted string> display the string enclosed in quotes
DISPlay:TEXT:CLEar clear the displayed message
The following command string shows how to display a message on the
front panel.
"DISP:TEXT ’HELLO’"
3
Chapter 3 Features and Functions
System-Related Operations
87
- Agilent 34401A 1
- 6 ½ Digit Multimeter 1
- Safety Information 3
- Additional Notices 5
- DECLARATION OF CONFORMITY 6
- Multimeter 7
- The Front Panel at a Glance 8
- Display Annunciators 10
- The Rear Panel at a Glance 11
- In This Book 12
- Contents 13
- Quick Start 17
- ERROR annunciator turns on 19
- To Adjust the Carrying Handle 22
- To Measure Voltage 23
- To Measure Resistance 23
- To Measure Current 24
- To Test Continuity 25
- To Check Diodes 25
- To Select a Range 26
- To Set the Resolution 27
- -H.DDD,DDD EFFF 28
- -045.23 mVDC 28
- Agilent System II 29
- Front-Panel 31
- Menu Operation 31
- FUNCTION and RANGE / DIGITS 32
- Front-Panel Menu Reference 33
- A Front-Panel Menu Tutorial 35
- Recall 39
- Null 42
- < < 42
- Auto/Man 42
- To Make dB Measurements 46
- To Make dBm Measurements 47
- To Trigger the Multimeter 48
- Using an External Trigger 48
- To Use Reading Hold 49
- To Use Reading Memory 52
- Mem annunciator 53
- Features and 55
- Functions 55
- Features and Functions 56
- Measurement Configuration 57
- Ω and 1000 Ω 58
- DC Input Resistance 59
- Input terminals 61
- Integration Time 63
- Integration Time 63
- Resolution 63
- FRON” or “REAR” 64
- Autozero 65
- RANGE keys to select 68
- Math Operations 69
- Min–Max Operation 70
- Null (Relative) Operation 71
- Limit Testing 75
- Trigger Source Choices 79
- Trig annunciator turns on 80
- GPIB or RS-232) 81
- GPIB interface by 81
- GET using BASIC 81
- Group Execute Trigger 81
- Number of Samples 83
- Number of Triggers 84
- Trigger Delay 85
- Automatic Trigger Delays 87
- Reading Hold 88
- Voltmeter Complete Terminal 89
- External Trigger Terminal 89
- System-Related Operations 90
- Reading Memory 90
- Error Conditions 91
- Self-Test 92
- Display Control 93
- Shift are disabled 93
- Beeper Control 94
- Comma Separators 95
- Firmware Revision Query 95
- SCPI Language Version Query 96
- GPIB Address 97
- Remote Interface Selection 98
- Parity Selection (RS-232) 99
- GPIB / 488 100
- Calibration Overview 101
- Calibration Security 101
- • Front-Panel Operation: 102
- Calibration Count 104
- Calibration Message 105
- Operator Maintenance 106
- Power-On and Reset State 107
- Remote Interface 109
- Reference 109
- > 110
- Command Summary 111
- CONFigure? 111
- (continued) 113
- Command 118
- Using the MEASure? Command 119
- Using the CONFigure Command 119
- Using the READ? Command 120
- Sense terminals 123
- 2-wire ohms) 127
- 4-wire ohms) 127
- Math Operation Commands 130
- Triggering 133
- The Wait-for-Trigger State 135
- Triggering Commands 136
- System-Related Commands 138
- OFF) or “1” (ON) 139
- FIFO) order. Each error 139
- SCPI version 139
- The SCPI Status Model 140
- What is an Event Register? 140
- What is an Enable Register? 140
- SCPI Status System 141
- The Status Byte 142
- IEEE-488 bus 144
- IEEE-488 SRQ interrupt 144
- The Standard Event Register 146
- 148
- Value 148
- Definition 148
- Status Reporting Commands 150
- Calibration Commands 152
- RS-232 Configuration Overview 154
- RS-232 Data Frame Format 155
- DTR / DSR Handshake Protocol 157
- RS-232 Troubleshooting 158
- RS-232 Interface Commands 159
- Command Separators 162
- Querying Parameter Settings 163
- SCPI Command Terminators 163
- IEEE-488.2 Common Commands 164
- SCPI Parameter Types 164
- Output Data Formats 165
- TALK ONLY for Printers 166
- To Set the GPIB Address 167
- On/Off 167
- To Set the Baud Rate 169
- To Set the Parity 170
- 3478A Command 172
- Description 172
- Agilent 34401A Action 172
- Fluke 8840A 173
- Command 173
- Description 173
- Agilent 34401A Action 173
- SCPI Compliance Information 174
- Error 177
- Messages 177
- Error Messages 178
- Execution Errors 179
- SEC is not a valid suffix) 180
- BUS and a READ? 181
- INTERRUPTED 183
- UNTERMINATED 183
- DEADLOCKED 183
- Self-Test Errors 185
- Calibration Errors 186
- Ω range 187
- Application 189
- Programs 189
- Application Programs 190
- Using the Status Registers 194
- Continued on next page > 200
- Measurement 203
- Tutorial 203
- Measurement Tutorial 204
- Thermal EMF Errors 204
- Copper-to 204
- Approx. µV / °C 204
- Loading Errors (dc volts) 205
- Leakage Current Errors 205
- Common Mode Rejection (CMR) 207
- Noise Caused by Ground Loops 208
- Resistance Measurements 209
- 4-Wire Ohms Measurements 209
- Power Dissipation Effects 210
- Settling Time Effects 210
- DC Current Measurement Errors 211
- True RMS AC Measurements 212
- RMS value of a waveform 213
- –3 dB bandwidth 214
- 1 + ( 2 π x F x R 215
- Measurements Below Full Scale 216
- Low-Level Measurement Errors 217
- Common Mode Errors 218
- AC Current Measurement Errors 218
- EMF and bias current errors 219
- Specifications 221
- DC Characteristics 222
- Measuring Characteristics 223
- Chapter 8 Specifications 223
- AC Characteristics 224
- General Information 228
- HOLD Sensitivity: 228
- Product Dimensions 229
- ≤ 150 µV 230
- ≤ 15 µV 230
- ≤ 1.5 µV 230
- ≤ 40 µV 231
- Sensitivity 232
- Resolution 233
- Accuracy 233
- Transfer Accuracy 234
- 24-Hour Accuracy 234
- 90-Day and 1-Year Accuracy 234
- Temperature Coefficients 234
- IndexIndex 237
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