Seagate ST34520N/W/WC/LW/LC, ST36530N/W/WC manual Interconnect characteristics for LVD I/O circuits

Medalist Pro Installation Guide, Rev. B 27

Table 5a. Interconnect characteristics for LVD I/O circuits

	Maximum distance between
	terminators (meters) [1] [3] [5]
Interconnect	Fast-5	Fast-10	Fast-20	Fast-40
Point-to-point interconnect	25	25	25	25 [2]
(2 devices)
Daisy-chain interconnect	15	15	15	12
(up to 16 devices) [4]

[1]For environments where all elements of the bus (cables, device inter- faces, environmental noise and other parameters) are controlled to be better than minimally required, it may be possible to extend the path length and device count.

[2]SCSI devices shall be within a stub length of the termination (.1 meter).

[3]Values specified by data rate shall apply even if a slower data rate is negotiated.

[4]Loads spaced at least 8 inches (20.3 cm) apart (refer to SCSI EPI T10/1143D specification).

[5]See ANSI T10/1302D specification for details.