Interfaces
8-43
Note: Network capabilities are standard on some printer models. Refer to your
printer user documentation for more information.
Input Buffer
Your printer has an input (link) buffer for each interface. The maximum size of the input
buffer depends upon the amount of RAM memory installed. The input buffers serve
the same purpose as a print spooler and can be allocated automatically by the printer.
The size of the input buffer may be modified or disabled from the operator panel
menus or through MarkVision Professional.
If NPAP is active on a port, two-thirds of the buffer memory is reserved for NPAP and
one-third is set aside for the input buffer. If NPAP is not active, all the memory is
available for the input buffer.
Table 8-8 shows the sizes automatically selected for the buffers when the buffer size
is set to
Auto in the menus.
Note: When using serial communication, the printer signals the host computer to
stop transmitting bytes when the serial input buffer is within 640 bytes. In
addition, when XON/XOFF protocol is used, the printer signals the host
computer to stop transmitting when the serial input buffer is 384, 256, and
128 bytes from full.
Table 8-8: Input Buffer Sizes in Bytes
Memory Size Parallel Buffer Size
Serial
Buffer Size
Network
Buffer Size
LocalTalk USB Fax
2MB 12K 12K 12K 12K 12K N/A
4MB 12K 12K 48K 12K 12K 350K
6MB 24K 12K 48K 24K 12K 350K
8, 10, or 12MB 48K 24K 48K 48K 24K 350K
16, 18, or 20MB 48K (1MB if no optional adapter is installed) 24K 1MB 1MB 24K 1MB
24, 28, 32, or 34MB 192K (1MB if no optional adapter is installed) 150K 1MB 1MB 150K 1MB
36, 38, or 40MB 384K (1MB if no optional adapter is installed) 300K 1MB 1MB 300K 1MB
44MB or larger 2MB 300K 2MB 2MB 300K 1MB
Note: MB represents 1,048,576 bytes. K represents 1024 bytes.
N/A means non-applicable.
