An internal DCE/DTE strap allows the user to configure the Model 2020/2020N as "DCE to DTE" or "DTE to DCE". In most cases, this RS-232 eliminates the need for special crossover cables. Housed in an ultra- Interface miniature case measuring only 2.66"...
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RS-232 Interface Figure 2. Popping open the case Once you have opened the case of the Model 2020/2020N, you will see the DCE/DTE strap located on the PC board in the position shown in Figure 3, below. The DCE/DTE strap is oriented closest to the RS-232 interface.
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After you have configured the DCE/DTE strap, all you need to do MODEL 2020 AND 2020N SPECIFICATIONS is plug the Model 2020 or 2020N into the proper device ports. Figures 4 and 5 show how to intstall the Model 2020/2020N.