HP QMS 1660 - Manual (Page 71)

Interfaces
4-39 Printer Configuration
Ignore Parity Errors
Specifies how the printer should handle parity errors.
Choices CTS
DSR
DSR POL
DTR
DTR POL
RTS Off, on
Off, on
Normal, reverse
Off, on
Normal, reverse
Off, on
Defaults CTS
DSR
DSR POL
DTR
DTR POL
RTS Off
Off
Normal
On
Normal
Off
Notes If the host uses hardware flow control, set this option to match
the type used by the host.
Baud rates of 19200 and 38400 require that both RTS and
CTS hardware flow control ((Administration/Communications/
Serial/Hdwe Flow Ctl menu) be selected. These baud rates do
not support XON/XOFF software flow control) Rcv Sw Flow
Ctl).
To download print system software to flash memory via the
serial port, RTS and CTS must both be set to On also, and the
cable pinouts must be connected as shown in appendix B,
“Technical Specifications.”
Menu Administration/Communications/Serial/Ignore Par. Err.
Choices Off—Ignore parity errors. The printer prints its best
interpretation of the character(s) affected by the error.
On—Don’t ignore parity errors. The printer replaces the
character(s) affected by the error with a question mark.
Default Off
Notes Use the Administration/Communications/Serial/Parity menu to
set parity.