Denso BHT-202B-CE/202BW-CE Barcode Reader User Manual


 
Chapter 3 Communications Operations of BHT-202B-CE/202BW-CE
119
(3)-1 Interface circuit USB
(3)-2 Interface circuit RS-232C
Output circuit Input circuit
TxD, RTS
RxD, CTS
Signal Level
Item Min. Typ. Max.
Output voltageH (3 K load)
5V
15V
Output voltage L (3 K load)
-15V
-5V
Input voltage H
3V
15V
Input voltage L
-15V
-3V
(NOTE)(1) Input / Output voltage are specified at the terminal of the interface connector.
(2) Output voltage becomes unsettled when the connector communication device file is
closed.
(3) Output voltage shall be under the following conditions :
Power voltage: Rated voltage
Load resistance: 3 k
USB Driver Receiver
5k