
Levels of Implementation
SERIAL PORT |
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| 1488 |
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TXD |
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| RXD | 3 |
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| 1489A |
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RXD |
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| TXD | 2 |
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| 39kΩ |
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| NC | 1 |
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RTS |
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| E | ||
| +12V |
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| CONNECTOR | ||
| LS08 |
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| TO |
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| 470Ω | 470Ω | 470Ω |
| TERMINAL |
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CTS |
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| CTS |
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| 5 |
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| DSR |
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| OPTIONAL |
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| 6 |
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| HARDWARE |
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DCD |
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| DCD |
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TRANSPARENT |
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| 8 |
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| MODE |
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| SIG GND |
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| 7 |
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TXC |
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| CHASSIS GND |
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RXC |
| LOGIC |
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LS08 | GND |
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| +12V |
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| SIG GND |
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| 470Ω | 7 |
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| 1 |
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| NC |
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| DTR | 20 |
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| 1488 |
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SERIAL PORT |
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| TXD |
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| 2 |
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TXD |
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| 1489A |
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| RXD | 3 |
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RXD |
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| CONNECTOR | |
| 39kΩ |
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| TO | |
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| 1488 |
| MODEM | |
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RTS |
| RTS | 4 | OR |
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| HOST SYSTEM | ||
| 470Ω |
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+12V |
| 1489A |
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CTS |
| CTS | 5 |
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| 39kΩ | 470Ω |
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| +12V |
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| 1489A |
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| DCD |
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DCD |
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| 6 |
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TXC |
| 39kΩ |
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RXC |
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| cb181 9210 |
Figure |
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