Channel Vision™

Printed Circuit Card Size

340 mm long x 120 mm wide
(standard full size ISA bus card).

Power Consumption

5V DC, 1.7A max from PC ISA bus.

Channel Connection

100 pin Centronics connector connecting to channel via special cable.

Input Threshold Voltage

Bus/tag signal threshold fixed at 1.2V.

Input Impedance

Bus/tag load impedance of at least 7 kohm.

Personal Computer Requirement

IBM™-compatible PC with minimum specification of 386SX processor, 4 MB RAM, 3 MB free hard disk space, 1.4 MB floppy disk, colour or monochrome VGA screen, Windows™ 3.1 and one (1) free full size ISA bus slot.

Compatibility

IBM™ System/370TM/FIPS Block, Byte, Selector and Data Streaming Channels up to 4.5 MBytes/sec.

Sampling Rate

User selectable sampling periods of
20, 40 and 100 ns.

Recording Capacity

Up to 1,048,576 state transitions using 7 MB on-board RAM (7 x 1MB SIMMs).  Records 48 bus/tag lines plus 8 bit time stamp per memory location.  On an inactive channel, recording is time limited (rather than state change limited) to approximately 26 seconds at a 100 ns sampling period because sampling always occurs at the fixed rate set by the user irrespective of channel activity to maintain accurate time stamping.

On-card RAM is expandable from 7 MB (7 x 1 MB SIMMs) to 28 MB (7 x 4 MB SIMMs) to increase recording capacity from standard 1 million states to 4 million states.

Triggering

User created trigger patterns  for halting data acquisition, containing up to 16 levels of sequential bus/tag combinations.  A number of pre-stored trigger sequences for common channel commands are provided. Trigger patterns can be saved to disk, reloaded from disk and edited by the user.  User selectable trigger options include exclusive, inclusive, address qualified and parity error triggering. The position of the trigger relative to the start or end of the captured data can be set by the user.

Data Display

Real Time and State display windows. Real Time window shows actual timing of signal transitions on the bus and tag lines, whereas State window compresses the display to show only logic state changes.  Timing information relative to the trigger is always displayed on the screen.

Interpreter

Interpreter parses the captured tag signals and displays recognised command and data sequences in text form in a display window.

Display Manipulation and Analysis Tools

Software tools for display manipulation and data analysis data include:

  • placing event markers and annotations in the display windows;

  • measuring time and number of state changes between events;

  • searching for events, e.g. start, end, trigger, markers, annotations, tag signal patterns

  • saving captured data to disk for later analysis (e.g. back at the office);

  • printing captured data;

  • standard Windows™ functions for manipulating display windows (e.g. opening, closing, maximising, minimising, cascading, tiling, zooming, copying/pasting).

ChannelVision is a trademark of Microelectronic Technologies Pty Ltd
IBM and System/370 are trademarks of International Business Machines Corporation
Microsoft is a registered trademark and Windows is a trademark of Microsoft Corporation.

       
 

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