Appendix B183ASUS PCI-DA2100/PCI-DA2200 User’s ManualAppendix B SCSI Cable SpecificationsThe recommended SCSI cable for an Ultra2 Wide SCSI operating at atransfer rate of 80 Mbytes/sec. is described below.Maximum length 12 metersImpedance 110ΩCapacitance 15.9 pf / ft @ 1MHzPropagation Delay 1.59ns / ft nomDC Resistance 95Ω / 1000 ft @ 20°CDelay Skew 0.035ns / ft (max.)SCSI Standards, Cable Length and Corresponding MaximumPossible Drive ConnectionsSingle-EndedLVD *Maximum DevicesSCSI-1 6 m - 8SCSI-2 3 m - 8Wide SCSI-2 3 m - 16Ultra SCSI-2 1.5 m - 8Ultra SCSI-2 3m - 4Ultra Wide SCSI-2 - - 16Ultra Wide SCSI-2 1.5 m - 8Ultra Wide SCSI-2 3 m - 4Ultra2 Wide SCSI - 12m 16* The maximum device count includes the controller. The controllermust occupy one SCSI ID on each drive channel. The controllerusually occupies ID 7.SCSI Bus Width and Maximum ThroughputBusWidthSCSI BusSync.FrequencyMax. BusThroughputSCSI-1 8-bit Asynchronous 5 MB/Sec(Fast) SCSI-2 8-bit 10MHz 10 MB/Sec(Fast) Wide SCSI-2 16-bit 10MHz 20 MB/SecUltra SCSI-2 8-bit 20MHz 20 MB/SecUltra Wide SCSI-2 16-bit 20MHz 40 MB/SecUltra2 Wide SCSI-2 16-bit 40MHz 80 MB/Sec
