Printronix P5005B, User Manual

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IEEE 1284 Parallel (Bidirectional) Submenu
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Buffer Size in K
This option configures the amount of memory allocated for the
IEEE 1284 parallel port buffer. You can specify between 1 and 16
Kbytes, in 1-Kbyte increments.
Auto Trickle
Auto Trickle is used to prevent a host computer from timing out
because the parallel interface was busy for too long. When Auto
Trickle is enabled and the printer's buffers are almost full, the
printer will begin to trickle data in (at the rate set in the Trickle Time
menu) until the buffers start to empty out.
Trickle Time
When the printer is printing data from a host and a second job is
received by the printer from a different host, Trickle Time prevents
the second host from timing out while it is waiting for its data to be
printed. In order to support this feature, the port has to be able to
accept data from the host and store it for future use.
For example, if the printer is printing a job from the serial port, and
then receives a second print job from the parallel port, the data from
the parallel port will “trickle” bit by bit into the printer buffer to
prevent a timeout error from being sent back to the host connected
to the parallel port.
The selected value is the time that the printer waits before getting
the next byte of data from the host. The Trickle Time value should
be less than the host time out value, but not too much shorter or
else the printer fills up its buffer too fast. This function is not
applicable for C/T hotport.