User's Manual
Table Of Contents
- Agilent Technologies 16750A/B Logic Analyzer
- Agilent Technologies 16750A/B Logic Analyzer
- Contents
- Getting Started
- Step 1. Connect the logic analyzer to the device under test
- Step 2. Choose the sampling mode
- Step 3. Format labels for the probed signals
- Step 4. Define the trigger condition
- Step 5. Run the measurement
- Step 6. Display the captured data
- For More Information...
- Example: Timing measurement on counter board
- Example: State measurement on counter board
- Task Guide
- Probing the Device Under Test
- Choosing the Sampling Mode
- To select transitional timing or store qualified
- Formatting Labels for Logic Analyzer Probes
- Setting Up Triggers and Running Measurements
- Displaying Captured Data
- Using Symbols
- Printing/Exporting Captured Data
- Cross-Triggering
- Solving Logic Analysis Problems
- Saving and Loading Logic Analyzer Configurations
- Reference
- The Sampling Tab
- The Format Tab
- Importing Netlist and ASCII Files
- The Trigger Tab
- The Symbols Tab
- Error Messages
- Must assign Pod 1 on the master card to specify actions for flags
- Branch expression is too complex
- Cannot specify range on label with clock bits that span pod pairs
- Counter value checked as an event, but no increment action specified
- Goto action specifies an undefined level
- Maximum of 32 Channels Per Label
- Hardware Initialization Failed
- Must assign another pod pair to specify actions for flags
- No more Edge/Glitch resources available for this pod pair
- No more Pattern resources available for this pod pair
- No Trigger action found in the trace specification
- Slow or Missing Clock
- Timer value checked as an event, but no start action specified
- Trigger function initialization failure
- Trigger inhibited during timing prestore
- Trigger Specification is too complex
- Waiting for Trigger
- Analyzer armed from another module contains no "Arm in from IMB" event
- Specifications and Characteristics
- Concepts
- Understanding Logic Analyzer Triggering
- Understanding State Mode Sampling Positions
- Getting Started
- Glossary
- Index
61
Chapter 2: Task Guide
Formatting Labels for Logic Analyzer Probes
“To turn labels off or on” on page 62
“To change the label polarity” on page 61
To change the label polarity
While negative logic is rare in circuits (the main exception at this time
is RAMBUS), you can change the label polarity if the device under test
uses negative logic.
1. In the Format tab, select the polarity button (next to the label button) to
toggle between positive (+) and negative (-) polarity.
Positive polarity means that a high voltage is a logic "1".
Negative polarity means that a high voltage is a logic "0".
Changing the label polarity will have the following effects:
• "1" and "0" values flip in the trigger condition.
• Waveforms and bus values (where shown) invert in the Waveform display
tool.
• "1" and "0" values flip in the Listing display tool.
Changing the label polarity does not affect:
• Edge definitions for clock setup and edge terms.
• Symbol definitions for the logic analyzer.
• Activity indicators.
To reorder bits in a label
In cases where buses in the device under test haven't been probed with
consecutive logic analyzer channels, you can reorder the bits in a label.
1. In the Format tab, select the label button whose bits you want to reorder.
2. Choose Reorder bits.