Logic Pod for Bus Doctor Analyzer

The Logic Pod turns the Bus Doctor into a full-featured logic analyzer, with the depth, ease-of-use, symbolic decoding and statistics needed by software and systems testers. It also provides the features needed by hardware engineers including multi-level triggering, filtering, state configuration and timing analysis. Each Logic Pod has 18 channels for logic analysis.

Logic Displays
The State display provides event-level access details for users who need to monitor software, device drivers or firmware. Signals can be grouped and decoded as Binary, Hex, ASCII, Decimal, Signed Decimal or Symbolically. Once groups are created and the display format is chosen, trigger and filter terms can be created at a high level. Each one of the analyzer's 108 channels can be used as a clock or qualifier. For hardware engineers, the Timing Waveform display provides for analysis of Logic signal activity.

The analyzer allows for examining captured data at the Command, State, and Signal levels. The different display formats can be individually displayed or simultaneously displayed. When displayed simultaneously, each display can be automatically synchronized with the others, or used independently. A histogram provides a graphical summary of trace activity for the entire trace and makes it easy to point and click to any position within the trace.



Logic Capturing
The Logic analyzer provides 2 predefined capture configurations:
1. Timing Mode
2. State Mode

Custom State Modes can also be created.

The BusDoctor's Capture Engine pushes protocol recording to new limits with the following features:
- Transitional Timestamping
- Bandwidth - 4.5 Gbytes/sec
- Depth - Stores up to 4 Gbytes
- Segmentable Trace Buffer





Logic Triggering
The user can create and save custom triggers including operations such as:
* Trigger if Two Events are too close in time
* Trigger if Two events are too far apart in time
* Trigger on the 10,000th occurrence of Event X or Y
* Trigger on sequence of up to 10 events

Triggering is used to stop the trace when a specific event or sequence of events occur. The analyzer also provides for stopping when the buffer is full, or looping endlessly until the user manually stops the trace. High-Level triggering options are provided for each bus. The User can also create custom triggers using the powerful Trigger Sequencer.





Logic Analyzer Grouping
The Logic analyzer software allows you to define groups of signals by name. You may use these named groups throughout the analyzer software for custom capture modes, defining triggers, and setting up custom filters.

Logic Analyzer Trace Filtering
The analyzer allows you to define custom filters. You may use the pre-defined signal group names from the Define Terms High Level menu or define your filter from the Signal Level menu.

Pre-configured filters for each bus allow the user to conserve buffer space and reduce the stored data to those items that are of interest. Custom filters can also be created.



Logic Statistics
The Real-Time Monitor can be easily configured by the user for almost any type of Statistical or Bit Error Rate measurement desired.

Dedicated hardware is provided for counting events. Software processes this data providing simple, or ratios of events per time or other events such as Transfers per Second, Transfers per Command, or Data Transfers per Error. These ratios are shown as Current Values and Peak Values, providing a summary of the changes over time.



Protocols, Standards, & Speed

Protocols & Standards:
* 18 Channels per pod
Speeds:
* 250MHz (4ns) resolution

The analyzer decodes many of the high-level protocols that are transmitted on each bus. The Command Listing is typically used for displaying high-level protocols which may be transferred across a bus, while the State Listing typically displays native, low-level protocols.



Since 1997, Gillaspy Associates has built a solid reputation for developing strong relationships with our customers by providing quality solutions and ongoing support.