HP E2423A Small Computer System Interface (SCSI) Bus Preprocessor Interface

Product Summary

The HP E2423A SCSI bus preprocessor interface provides an easy way to monitor activity on a SCSI bus. Bus commands and data activity can be captured for SCSI 1, SCSI 2 and SCSI 3 devices.

Software is included with the E2423A which configures the logic analyzer and labels input signals. Additionally, seven inverse assemblers which decode and display captured data in SCSI command mnemonics are included. Any of the ten devices defined in SCSI standard X3T9.2/86-109 revision 10B are supported.

Product Features

• Three types of connectors available:
  • SCSI 1 connector: A 50-pin, low density, unshielded ribbon connector for an 8-bit data bus. This connector is rectangular with a 2 X 25 pin pattern on 0.1 inch centers.
  • SCSI 2 connector: A 50-pin, high density, shielded D-type connector with screws and latches.
  • SCSI 3 connector: A 68-pin, high density, shielded D-type connector for an 16-bit data bus with screws.
• Conforms to all specifications defined in the SCSI standard X3T9.2/86-109 revision 10B.
• Supports the following SCSI devices:
  • direct access
  • sequential
  • printers
  • scanners
  • processor
  • automatic media changers
  • communication
  • write once read multiple
  • optical
  • CD ROM
• Interprets the following bus cycles:
  • select/reselect
  • arbitration
  • commands
  • messages
  • status
  • reset
  • bus free

Product Specifications

Microcontroller Compatibility
Compatible with SCSI 1, SCSI 1 and SCSI3 devices.

Logic Analyzers Supported
HP 1650, 1652, 16510, 1654
HP 16540A/D
HP 16550A, 16554A, 16555A, 16556A
HP 1660C, 1661C, 1662C, 1663C

Pods Required
Two 16 channel pods are required for complete disassembly.  Two 
additional pods may be used for simultaneous state and timing 
measurements.

Adapters
None are required for state analysis.

Product Ordering Information

HP E2423A	Small Computer System Interface (SCSI) Bus 
		Preprocessor Interface

Cabling Options:
   Opt 001	SCSI 1  Two cables per option (HP PN K2296)
   Opt 002	SCSI 2  One cable per option (HP PN 8120-5548)
   Opt 003	SCSI 3  One cable per option (HP PN A1658-62018)

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