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Specifications 55
SCSI Interface
Interface type
ANSI X3T9.2/375R Revision 10L
(SCSI 2)
Logic level
TTL-compatible
ID setting
Selectable from 1 to 6
Terminator
Internal terminator (enable/disable
selectable)
Connector type
Two micro DB 50-pin connectors
USB Interface
Interface type
Universal Serial Bus Specification
Revision 1.1
Electrical standard
Full speed mode (12Mb) of Universal
Serial Bus Specification Revision 1.1
Connector type
One receptacle (Type B)
IEEE 1394 FireWire
Interface type
IEEE 1394-1995 compatible
Data transfer method
Half-duplex Data/Strobe differential
serial
Synchronization method
Clock synchronization with DS-Link
Encoding/decoding
DS-Link
Logic level
3.3 V
Compatible connectors
IEEE 1394-1995 compatible
Power class
Power class code 100
No power supply from external sources
Fitted with a repeat function with bus
power
Environmental
Temperature
Operating: 41 to 95 °F
(5 to 35 °C)
Standby: –13 to 140 °F
(–25 to 60 °C)
Humidity (without condensation)
Operating: 10 to 80%
Standby: 10 to 85%
Option Interface Connector
Interface type
For use with the optional automatic
document feeder (B813162) and
transparency unit (B813182)
Output voltage
21.6 to 26.4 VDC
4.75 to 5.25 VDC
Output current
0.6 A (24 V)
0.3 A (5 V)
Initialization Methods
SCSI interface
Hardware: Initialized when the scanner
is turned on or the scanner
receives a SCSI Reset signal
from the SCSI interface
Software: Initialized when the
software sends the Esc @
(initialize the scanner
command), or the scanner
receives a SCSI Bus Device
message
1680.book Page 55 Wednesday, April 9, 2003 4:09 PM