Agilent Technologies 53230A Uživatelská příručka Strana 102
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Hodnocené. / 5. Na základě hodnocení zákazníků
102 53220A/53230A User’s Guide
3 53220A/53230A Measurements
Positive and Negative Duty Cycle Measurement Examples
// using MEASure? - measure the positive duty cycle at a
// 50% (0V) reference
*RST // reset to start from known state
MEAS:PDUT? 50, (@1)
// using CONFigure - measure the positive duty cycle at a
// -1.0V reference
*RST // reset to start from known state
CONF:PDUT -1.0V, (@1)
INP:COUP DC // set DC coupling
INP:IMP 50 // set input impedance to 50 ohm
READ?
---------------------------------------------------------
// using CONFigure - measure the negative duty cycle at a
// 50% (0V) reference
*RST // reset to start from known state
CONF:NDUT 50 PCT, (@1)
TRIG:SOUR EXT // set an external trigger source
INIT
Notes
1. The reference (threshold) can be specified as a percentage of the
peak-to-peak amplitude or as an absolute level in either the CONFigure or
MEASure? command.
2. Absolute references are relative to the amplitude of the signal and must take
into consideration the counter’s input coupling and impedance settings.
3. The measured duty cycle is a decimal representation of the ratio. For exam-
ple, a 5% duty cycle reading might appear in the counter output buffer as:
+5.105095730909666E-002
The same reading would appear in the display as: 5.1 Pct.
- Agilent 53220A/53230A 1
- 350 MHz Universal 1
- Frequency Counter/ 1
- 2 53220A/53230A User’s Guide 2
- Safety Information 3
- Safety Notices 4
- Safety Symbols 4
- Protection Limits 4
- Installing the Instrument 4
- 6 53220A/53230A User’s Guide 6
- 53220A/53230A User’s Guide 7 7
- 8 53220A/53230A User’s Guide 8
- 53220A/53230A User’s Guide 9 9
- 10 53220A/53230A User’s Guide 10
- Contents 10
- Preparation for Use 11
- 1 Preparation for Use 12
- Front and Rear Panel Overview 13
- Front Panel 13
- Rear Panel 14
- About the Instrument 15
- No Manuals? 16
- °C to +55 °C 17
- °C to +70 °C 17
- Electrical Requirements 18
- Applying Power 18
- Power-On LED Status 19
- Standby Power 19
- Battery Operation 20
- Battery Care 22
- °C, OCXO powered) 22
- °C to +60 °C (storage) 22
- Using Built-In Help 23
- Utility Functions 23
- Display Configuration 23
- Numeric Format 24
- Screen Control 25
- Screen Capture 26
- User Interaction 27
- Reference Settings 28
- Measurement Time Out 29
- Time Base 29
- Auto Level 30
- Securing the Instrument 32
- Agilent Technologies 35
- Software Requirements 36
- Obtaining the IP Address 37
- 169.254.2.30 38
- A-53230A-00050 38
- A-53230A-00050.local 38
- Web Interface Overview 39
- Loading the Software 42
- Installing Instrument Drivers 43
- Configuring the LAN Interface 44
- Locating the Instruments 45
- Socket connection 47
- Host Names 48
- Configuring the USB Interface 49
- The USB Address String 50
- Disabling the USB Interface 51
- 53220A/53230A User’s Guide 53 53
- The GPIB Address String 54
- Changing the GPIB Address 54
- Disabling the GPIB Interface 54
- Using Interactive IO 55
- Firmware and Driver Updates 56
- SCPI Language Emulation Mode 57
- 53220A/53230A Measurements 63
- Counter Measurement Summary 64
- 53220A/53230A User’s Guide 65 65
- 53220A/53230A Measurements 3 65
- Reference Oscillator Source 66
- External Reference Example 68
- Setting the Measurement Mode 71
- Reading #1 72
- Reading #2 72
- Reading n 72
- SCPI Syntax Conventions 75
- Low-Level Command/Subsystem 77
- 78 53220A/53230A User’s Guide 78
- 3 53220A/53230A Measurements 78
- Using MEASure 79
- Using CONFigure 79
- Using CONFigure? 80
- Frequency 81
- Frequency Ratio 83
- Frequency Ratio Examples 84
- Period Measurement Examples 86
- Time Stamp 87
- Time Interval 90
- Rise Time and Fall Time 94
- Pulse Width 97
- Duty Cycle 100
- ° and 360° 104
- Single-Period 105
- Totalizing Measurements 107
- Continuous 110
- Burst Pulse Measurements 112
- Carrier Frequency 113
- Pulse PRI and PRF 114
- PRI and PRF Examples 116
- Positive and Negative Widths 117
- 53220A/53230A Input Signal 119
- Conditioning 119
- Channel Characteristics 120
- Signal Conditioning Path 120
- Parameter 121
- Input Impedance 122
- Impedance Example 122
- Input Protection 123
- Input Range 124
- Range Example 124
- Setting the Probe Factor 125
- Input Coupling 126
- Coupling Example 127
- Using Auto-Level 131
- Relative Threshold Example 132
- AC coupling 133
- DC coupling 133
- System Auto-Level Range 134
- Detector Threshold Example 137
- Noise Rejection (Hysteresis) 137
- Noise Rejection Example 138
- Threshold Slope 139
- Input Slope Example 140
- Color Strength 141
- Description 141
- Triggering and Gating 143
- Settings Summary 144
- Trigger and Gate Time Line 145
- Trigger and Gate Cycle 145
- 5 Triggering and Gating 146
- Triggering and Gating 5 147
- System Trigger 148
- System Trigger Source 149
- Trigger Source Example 150
- Trigger Slope Example 151
- Trigger Delay Example 152
- Trigger Count Example 152
- Sample Count Example 153
- Triggered state 154
- Wait-for-trigger state 154
- Initiating Example 155
- READ? Example 155
- Measurement Gate 156
- Gate Set Up 156
- Frequency Measurements 158
- Setting the Gate Time 160
- External Gate Sources 162
- External Gate Signal Polarity 162
- Gate Source ADVanced 164
- Totalizing 165
- Continuous Totalizing 169
- Time Interval Measurements 170
- Setting Narrow Pulse Mode 174
- Setting a Gate Start Delay 181
- Gate Stop Source 183
- Gate Slope 183
- Gate Stop (closed) 183
- External Gate Source 183
- Gate Stop Hold Off 183
- Gate Stop Hold Off Source 184
- Automatic Gate Extension 189
- Data Logging 191
- Math Functions 192
- Smoothing Data 194
- Smoothing Example 195
- Scaling Functions 195
- Enabling the Scale Functions 196
- Using the Scale Functions 197
- Scale Reference Value 198
- Reference Example 199
- (query form) 200
- Assigning Reading Units 201
- Scaling Example 202
- Statistics 203
- Reading Count 204
- Allan Deviation 206
- Standard Deviation 207
- Clearing/Resetting Statistics 207
- Limit Checking 208
- Enabling Limit Checking 209
- Example: Limit Checking 210
- Histograms 211
- Viewing Histograms 212
- Histogram Configuration 213
- Number of Bins 215
- Lower and Upper Ranges 216
- Automatic Range Setting 218
- Resetting the Histogram 220
- Zoom & Markers View 221
- Trend Charts 224
- Viewing Trend Charts 225
- Trend Chart Boundaries 226
- Clearing the Trend Chart 227
- Saving Readings 227
- Zoom & Markers Window 228
- Reading Decimation 229
- Configuring the Data Logger 232
- Specifying a Data Log File 232
- Setting the Duration 233
- Setting a Start Delay 233
- Starting the Data Logger 234
- Viewing Readings 234
- Stopping the Application 235
- Formats and Data Flow 237
- Reading Formats and Data Flow 238
- Specifying a Format 239
- Data Flow 240
- Front Panel Display 241
- Reading Memory 241
- FETCh? Example 243
- R? Example 243
- DATA:REMove? Example 245
- DATA:LAST? Example 245
- Memory Threshold Example 246
- Counter File System 247
- 7 Formats and Data Flow 248
- Creating Folders 249
- Specifying a Default Folder 251
- Creating Data Files 251
- Creating a Data File Example 252
- Creating State Files 253
- State File Example 254
- Storing User Preferences 255
- Using *SAV and *RCL 256
- User-Defined Power-On States 258
- Managing Folders and Files 261
- Deleting a Folder Example 261
- Deleting State Files 263
- Copying and Moving Files 264
- Folder Catalogs 265
- MMEMory:CATalog[:ALL]? 266
- Instrument Status 267
- 8 Instrument Status 268
- Condition Register 269
- Event Register 269
- Enable Register 270
- Standard Event Register 272
- Status Byte Register 273
- Appendix A 275
- 53220A/53230A Error Messages 275
- Command Errors 276
- Execution Errors 278
- Device Specific Errors 280
- Query Errors 281
- Instrument Errors 281
- Calibration Errors 285
- Self-Test Errors 286
- Numerics 289
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