Xerox 7142 Service Manual - page 41

RJ-901C/RJ-900C 　 Maintenance Manual

3 Specifications

3-7

3.3 Interface Specifications

This section explains the specification of the interfaces supported for this plotter.

3.3.1

 USB Interface Specifications

Item

Specifications

Interface

Universal Serial Bus Specifications Revision 2.0

Universal Serial Bus Device Class Definition for Plotting Devices Version 1.1

Data format

NRZI

Transmission speed

11Mbps (USB1.1) / 480Mbps (USB2.0)

Applicable connector

USB Series B

Allowable cable length 3 m

Pin number

Signal name

Input/output

Function

1

VCC

-

Cable power supply

2

- Data

Bidirectional

Data

3

+ Data

Bidirectional

Data

4

Ground

-

Cable ground