Connection
Serial RS-232 connection
16
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AUTION
:
Evaluation Kit provides reverse polarity protection only in voltages range, specified for particular
FH915.
3.4. Serial RS-232 connection
A standard Null-Modem cable (included in Kit) with DB-9 Female connectors on both ends may be used
to connect PC COM_X port with Serial port on adapter.
Adapter’s DB-9 male connector external view and pinout is shown on the Figure 3-2.
Figure 3-2. DB-9 Male connector
Table 3-1. DB-9 Male Connector Specification
Please, refer to particular external device Serial port specification to select and use right Serial cable for
proper connection.
Pin
Signal Name
Dir
Description
1
-
-
Not used
2
RXD
I
Receive Data
3
TXD
O
Transmit Data
4
DTR
O
Data Terminal Ready
5
GND
-
Signal Ground
6
DSR
I
Data Set Ready
7
RTS
O
Request To Send
8
CTS
I
Clear To Send
9
-
-
Not used
Содержание FH915
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