SNBC BTP-2002NP Service Manual page 33

Confidential
Data Receiving Timing (Compatibility Mode)
USB Interface
Specifications
Data transmission:
Connector (printer side):
Signal definition
Pin Number
Universal Serial Bus Specification Revision 1.1
USB "B" type connector (standard)
Signal Name
1 VBUS
2 DATA-
3 DATA+
4 GND
Function
+5V
Printer data transmit line minus
Printer data transmit line plus
Ground
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BTP-2002NP Service Manual