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Chapter 2, Description of Connectors
Connectors
PARALLEL PORT
This port is used with printers requiring a parallel interface when printing screen
images or test results. Set the
Printer Port: field (on the PRINT
CONFIGURE screen or TESTS (Printer Setup) screen) to
Parallel to print
using this port. Use address 15 when sending data to this port from IBASIC
programs.
Operating Considerations
• 25-pin Centronics
Pin assignments for this connector are as follows:
Pin 1 - nStrobe
Pin 2 - Data 1 (Least Significant Bit)
Pin 3 - Data 2
Pin 4 - Data 3
Pin 5- Data 4
Pin 6 - Data 5
Pin 7- Data 6
Pin 8 - Data 7
Pin 9 - Data 8 (Most Significant Bit)
Pin 10 - nAck
Pin 11 - Busy
Pin 12 - PError
Pin 13 - Select
Pin 14 - nAutoFd
Pin 15 - nFault
Pin 16 - nInit
Pin 17 - nSelectIn
Pin 18 - Signal Ground (nStrobe)
Pin 19 - Signal Ground (Data 1 and Data 2)
Pin 20 - Signal Ground (Data 3 and Data 4)
Pin 21 - Signal Ground (Data 5 and Data 6)
Pin 22 - Signal Ground (Data 7 and Data 8)
Pin 23 - Signal Ground (Busy and nFault)
Pin 24 - Signal Ground (PError, Select, and nAck)
Pin 25 - Signal Ground (nAutoFd, nSelectIn, and nInit)
PROTOCOL SERIAL
This connector provides access to Test Set diagnostics and is intended to be used
only by factory service representatives.