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1 scsi physical specification -4 – FUJITSU C150-E049-02EN User Manual

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M3099GX/GH OEM Manual

Physical specification

Table 3.1 SCSI physical specification

Specification

Single Ended

50 Contact Shielded Low Density

6 m

90␣

to 140

25 signal twisted pair

0.1 m (from mainline)

See Figure. 3.2

Open collector or three states driver

0.0 to 0.5 volts dc at 48mA sinking
(signal assertion)
2.5 to 5.25 volts dc (signal
negation)

0.0 to 0.8 volts dc
2.0 to 5.25 volts dc
–0.4 to 0.0mA at Vi=0.5 volts dc
0.0 to 0.1mA at Vi=2.7 volts dc
0.2 volts dc

See Table 3.2

Item

Driver/receiver

Connector

Cable

Signal
level

Max. cable length

Characteristic impedance

Cable type

Stub length

Terminator

Driver/receiver

Output characteristics:

Low-level output voltage

High-level output voltage

Input characteristics :

Low level input voltage
High level input voltage
Low level input current
High level input current
Minimum input hysteresis

Connector pin assignments for
signal lines

#03.pm5

98.2.22, 1:31 PM

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