Use the loopback test in the X-CTU software to determine that packets can be transmitted correctly. Remove the loopback adapter and attach the radio modem. DB9 connectors are designed to work with the EIA/TIA 232 serial interface standard, which determined the function of all nine pins as a standard, so that. Use the loopback test in the XCTU software to determine that packets can be transmitted correctly. When the adapters are assembled, test the cable by attaching the loopback plug into the yellow adapter and the CAT-5 cable, and the green one into the PC and the CAT-5 cable. (This cable will be carrying RS232 signals, not ethernet signals.) To build an 8-wire RS232/RS485 serial cable for use with the Nema-4 enclosure, use a standard CAT-5 networking cable to act as the extension between the computer and the radio modem. (This cable will be carrying RS232 signals, not ethernet signals.)Īssemble both the yellow and green adapter according to this table: To build a 3-wire RS232 serial cable ( 3-wire refers to the three signals: RXD, TXD and GND), use a standard CAT-5 networking cable to act as the extension between the computer and the radio modem. Wire color (Ethernet cable - EIA/TIA 568B )Īn example application for these adapters would be to extend the RS232 serial connection so that the radio modem might be located closer to the antenna location so that the antenna cable will be as short as possible. Two adapters are available:ĭB9 Male to RJ45 connector, Yellow adapter (p/n:JE1D2-CDA-A)ĭB9 Female to RJ45 connector, Green adapter (p/n:JE1D3-CDA-A) The non-standard 23-pin D-sub connectors for external floppy drives and video output on most of the Amiga computers are usually labeled DB-23, even though their shell size is two pins smaller than ordinary DB sockets. These adapters are shipped unassembled so that they may be put together to accommodate the needs of the application. DB-9 nearly always refers to a 9-pin connector with an E size shell. To facilitate adapting the DB9 connector interface to work with other physical connection types Digi offers RJ45 to DB9 adapters. Figure 2 below shows which pins the full-duplex RS-485/RS-422 signals will be on the DB-9 connector when using the same UART connections shown in Figure 1. The Digi radio modem has the RS232 and RS485/422 signals available on a DB9 connector. In some situations it is necessary to interface the RS232 or RS485 signals to RJ45, terminal strips or other physical connections.
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