Interfaces
8-46
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.
