User’s Manual
2.3.7Serial Port 2 Connector in
2.3.7.1 Serial Port 2 Connector in
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| RxD |
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| TxD | 3 |
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| DTR | ||
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| GND |
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| DSR |
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| RTS | 7 |
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| RI |
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| NC |
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2.3.7.1.1 Signal Description – Serial Port 2 Connector in
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| Serial output. This signal sends serial data to the communication link. The signal | ||
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| is set to a marking state on hardware reset when the transmitter is empty or when | ||
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| loop mode operation is initiated. |
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| RxD | Serial input. This signal receives serial data from the communication link. |
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| DTR |
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| Data Terminal Ready. This signal indicates to the modem or data set that the | ||
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| DSR |
| Data Set Ready. This signal indicates that the modem or data set is ready to | |||
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| establish a communication link. |
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| RTS |
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| Request To Send. This signal indicates to the modem or data set | that | the |
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| CTS |
| Clear To Send. This signal indicates that the modem or data set is ready to | |||
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| exchange data. |
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| DCD |
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| Data Carrier Detect. This signal indicates that the modem or data | set | has |
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| detected the data carrier. |
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| RI |
| Ring Indicator. This signal indicates that the modem has received a telephone | |||
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| ringing signal. |
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