Omicron Lab Bode 100

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Figure 11-15: Stability margins displayed in the loop gain bode plot of a step-down dc/dc converter.

Besides the Bode diagram, the stability margins are clearly visible in the Nyquist diagram. See next

page.

148

OMICRON Lab

Main Page

Table of Contents3
About this User Manual6
Safety Instructions7
Operator Qualifications7
Rules for Use7
Designated Use8
Cleaning8
Compliance Statements and Recycling9
Compliance Statement9
Information for Disposal and Recycling9
Bode 100 and Accessories10
Delivered Items10
Optional Accessories11
Technical Data12
Absolute Maximum Ratings12
Bode 100 Specifications13
System Requirements14
Environmental Requirements14
Mechanical Data14
Device Overview15
Connectors15
Block Diagram17
Functional Description18
Hardware Revisions18
Bode Analyzer Suite Introduction19
Start Screen19
Main Window20
Measurement Configuration22
Trace Configuration24
Ribbon Controls26
Status Bar29
Chart Context Menu30
Options Menu31
Measurement Types and Applications36
Gain Measurement Introduction37
Impedance Measurement Introduction39
Vector Network Analysis44
Transmission / Reflection44
Gain / Phase50
Reflection with External Coupler51
Impedance Analysis52
One-Port52
Impedance Adapter61
Shunt-Thru66
Shunt-Thru with Series Resistance68
Series-Thru69
Voltage/Current70
External Bridge71
Advanced72
SCPI Server72
Measurement and Device Settings74
Hardware Setup74
Receiver Bandwidth76
Choosing the Receiver Attenuator78
Signal Source Settings80
Using External Probes83
Calibration / Correction85
Internal Device Calibration85
Performing a Gain Calibration86
Calibrating a Transmission (S21) Measurement88
Calibrating a Gain/Phase Measurement89
Performing an Impedance Calibration91
Calibrating a Reflection or One-Port Impedance Measurement94
Calibrating an External Coupler or External Bridge Measurement96
Calibrating an Impedance Adapter Measurement98
Calibrating a Shunt-Thru or Series-Thru Measurement100
Calibrating a Voltage/Current Measurement102
Further Calibration Information103
Difference between Full-Range and User-Range Calibration103
Enabling and Disabling a Calibration105
Re-Performing a Calibration106
Full-Range Calibration below 10 Hz106
Automatic Deletion of Calibration107
Saving Calibration Data107
Exporting Calibration Data108
Bode Analyzer Suite Software Features109
Exporting and Saving Measurement Data or Settings109
Loading and Saving the Equipment Configuration109
Use the Clipboard Functions to Export Data109
Use the Clipboard to Import Data111
Exporting Measurement Data to CSV or Excel Files113
Generating a Touchstone File115
Generate a PDF Report116
Using the Interactive Chart117
Configure the Diagrams117
Zooming the Measurement Curve119
Optimize the Axis Scaling / Autoscale122
Working with Cursors and the Cursor Table125
The Cursor Table125
Using Cursors in the Chart126
Link Cursors128
Using the Memory Traces130
Working with Measurement and Math Traces134
Measurement Traces135
Math Traces136
Expression Traces137
Port Extension141
Cursor Calculations143
Non-Invasive Stability Measurement143
Fres-Q Calculation145
Stability Margin Calculation147
Averaging150
Unwrapped Phase151
Check for Updates153
Automating Measurements154
Troubleshooting155
Support156
Index157

Omicron Lab Bode 100 - Page 148

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