Mating Connectors For Lc And Lcv Model Drives - Seagate ST318203LW Product Manual

Cheetah 18LP Product Manual, Rev. F 59
9.6.4.2

Mating connectors for LC and LCV model drives

The nonshielded connector shall be an 80-conductor connector consisting of two rows of 40 contacts with adja-
cent contacts 50 (1.27 mm) mils apart (see Figure 27). I/O connection using a cable is not recommended. The
length and size of the host equipment DC power carrying conductors from the DC power source to the host
equipment 80-pin disk drive interface connector(s) should be strictly designed according to proper power trans-
mission design concepts. No possibility for the equipment user to attach an 80-pin cable/connector should be
allowed, since the length of the DC power carrying conductors could not be controlled and therefore could
become too long for safe power transmission to the drive. Daisy-chain 80-conductor cables should especially
not be allowed, since the power-carrying conductors on the 80-conductor interface were not intended to sup-
port a series of drives.
To insure that both drive connector and host equipment mating connector mate properly, both drive connector
and host equipment mating connector must meet the provisions of "SFF-8046 Specification for 80-pin connec-
tor for SCSI Disk Drives."