Lexmark C530DN Technical Reference - Page 328

8-12 Interfaces Table 8-1 shows all protocol timings in nanoseconds. Table 8-1: Typical Parallel Interface Timings Time Name A Data setup to STROBE* low B STROBE* width C Data hold after STROBE* D STROBE* low to BUSY high E ACKNLG* low until ACKNLG* high F ACKNLG* high to BUSY low1 G BUSY low and ACKNLG* high to STROBE* low 1 Relationship of ACKNLG* and BUSY is not consistent Minimum/Maximum 500 min. 500 min. 500 min. 500 max. 500 min. - 500 min. Fastbytes Protocol Data Transfer Sequence Your printer is equipped with Fastbytes protocol, which is an enhanced parallel interface protocol. Fastbytes protocol may give you a faster data transfer time on some personal computers and operating systems. Fastbytes protocol is the printer default. If you have data transmission problems between your personal computer and the printer, change the parallel protocol to Standard. This causes the printer to operate in IEEE-compliant compatibility mode. The following illustration shows the typical timing sequence. DATA 1-8 STROBE* ACK* BUSY