QMS 1660 Reference Manual page 72

Sets the minimum number of kilobytes of system memory allocated to
the serial interface.
Menu Administration/Communications/Serial/Min K Spool
Choices 00000-99999
Default 00015
Notes This value must be less than K Mem For Spool.
A 00000 value does not turn off the spooling buffer for the
serial interface. If the value is set to 00000, the printer
calculates the Min K Spool automatically at initialization.
The printer must be restarted for changes to the Min K Spool
menu to take effect. You can either let the printer restart
automatically after you save the change and exit from the
configuration menu, or you can wait for the change to take
effect the next time you manually turn on the printer.
Enables or disables the PostScript interactive mode from the host.
Menu Administration/Communications/Serial/Mode
Choices Interactive—Establish two-way communication between the
Noninteractive—Establish one-way communication from the
Disabled—Turn off serial communication with the host. The
Default Interactive
Notes The printer must be restarted for changes to the Mode menu to
take effect. You can either let the printer restart automatically
after you save the change and exit from the configuration
menu, or you can wait for the change to take effect the next
time you manually turn on the printer.
host and the printer.
host to the printer.
printer stops accepting print jobs over the serial interface.