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3-4 M3099GX/GH OEM Manual
Physical specification
Table 3.1 SCSI physical specification
Specification
Single Ended
50 Contact Shielded Low Density
6 m
90␣ Ω to 140 Ω
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 PM4