Denso BHT-202B-CE/202BW-CE Manuel D’Utilisation
Chapter 3 Communications Operations of BHT-202B-CE/202BW-CE
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(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 voltage
″H″ (3 KΩ load)
5V
――
15V
Output voltage
″L″ (3 KΩ 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 kΩ
closed.
(3) Output voltage shall be under the following conditions :
Power voltage: Rated voltage
Load resistance: 3 kΩ
USB Driver/Receiver
5kΩ