6)
Maximum received 2048 byte/packet
data size
7)
Modulation method 3/16 RZI (Return to Zero Invert):
when the transfer speed is less than 115.2kbps
1/4 RZI (Return to Zero Invert):
when the transfer speed is 0.576Mbps and 1.152Mbps
4 PPM (Pulse Position Modulation):
when the transfer speed is 4Mbps
4-2-2. USB Interface
<Specifications>
1)
Device structure
Self-powered device
2)
Data transfer
Half duplex serial interface
method
Universal Serial Bus Specification Revision 1.0 compatible
Universal Serial Bus Device Class Definition for printing
Device Version 1.0 compatible
Signal rate: 12Mbps (full speed)
Transfer type: Control transfer/Bulk transfer
3)
Input/output circuit No.
Signal name
1
Vcc
2
-Data
Data signal line
3
+Data
Data signal line
4
GND
<Signal level>
Vcc: "H" level input voltage: +2.0V to +5.5V
"L" level input voltage: +0.0V to +0.8V
-Data, +Data: Differential input sensitivity
"H" level input voltage: +2.8V to +3.6V
"L" level input voltage: +0.0V to +0.3V
4)
Interface cable
Material: AWG No.28 or larger
Full speed device cable (with twisted-pair shield)
Less than 5 mm
5)
Interface connector Printer-side: USB standard, Series B receptacle
Cable-side:
USB standard, Series B plug
4
Series B
1
2
4
3
Summary of Contents for BJC-85
Page 1: ...REFERENCE MANUAL Oct 1999...