Printronix L1024 - Manual (Page 81)

3–37 Configuring the Printer
Data Bit 8
Values: Enable or Disable.
Normally, this parameter is enabled. It allows access to the extended ASCII
character set.
Paper Instruction (PI) Line
Values: Enable or Disable.
Paper Instruction Line is used to enable or disable paper motion. It is dependent
on your host computer.
Data Polarity
Values: Standard or Inverted.
It must be set to match the Data Polarity of your host computer.
There are normally seven or eight data bits that define each ASCII character sent
from the host computer to the printer. The bits are usually high–true.
Strobe Polarity
Values: Standard or Inverted.
It must be set to match the Data Strobe Polarity of your host
computer.
When the host computer sends a data strobe signal, it is indicating that it has
placed data on the data bus and that the data is valid (i.e., enough time has
elapsed for the data lines to stabilize). The data strobe signal forces the printer to
read the data lines into its input buffer.
Output Polarity
Values: Standard or Inverted.
It must be set to match the Output Polarity of your host computer.
This option inverts the normal sense of the NACK, BUSY, SELECT, PAPER
EMPTY, and NFAULT output control signals.