Compaq DWZZH manual Product Specifications, Lists the functional specifications for the Dwzzh Hub

Chapter 1. Introducing the DWZZH UltraSCSI Hub

1.3Product Specifications

Table 1-1 lists the functional specifications for the DWZZH Hub.

Table 1–1 DWZZH Hub Functional Specifications

Feature	Specification
SCSI ID	The small UltraSCSI HUB does not use a SCSI ID.
SCSI Addresses	The large UltraSCSI HUB uses SCSI ID 7 for
	arbitration.
Overload Protection	TERMPOWER is not supplied to the external ports
DTERMPOWER	of the UltraSCSI HUB. Internal TERMPOWER is
STERMPOWER	protected via a resetable fuse. TERMPOWER must
	be supplied from the remote connection to enable
	each HUB port.
Shielding
Enclosure &
Connectors	Shielded for ESD, EMI, and safety requirements
Power-Up Reset	Automatically clears
	∙	Initiator detection circuit
	∙	Target detection circuit
	∙	BSY glitch filter
SCSI Bus Reset	Automatically clears
	∙	Initiator detection circuit
	∙	Target detection circuit
	∙	BSY glitch filter
Single-Ended SCSI Bus	20 meters (66 feet) per segment
Length
Ultra (20 megatransfers per
second or 40 MB/s)
Differential SCSI Bus Length	25 meters (82 feet) per segment
Data Timing	The relationship between the data and the control
	signals is brought to SCSI compatibility before
	transmission to the other SCSI bus.
Design	High reliability SMT

EK–DWZZH–UG. D01 1–5