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Tech Head - The Technology Section
The Work Bench and Soldering Station
help to build a "NULL MODEM" Cable !!!
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<blockquote data-quote="jpmm" data-source="post: 79368" data-attributes="member: 187204"><p>hello there.</p><p>i a bit confused regarding to the creation of the "NULL MODEM" cable. after reading the ZackyFileS's manual of "How to construct a NULL MODEM cable" </p><p>i came to the conclusion that the best option for me would be to modify an existent commercial cable. therefore and because I intend to use a notebook (parallel port) to communicate with the receiver (by the way, i intend to use the receiver Mirage sci900s - fig.3 ) could someone confirm if the cable i should use is the "Serial (RS232) null modem cable (DB9-DB25)" as in the fig.1?</p><p></p><p><img src="http://www.pulsat.com/satellite/accessor/nullmodembig.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>fig.1</p><p></p><p>my other question is as follows:</p><p>so, using the fig. 2 , i should connect the DB25 Male (the one bellow) to the notebook and the DB9 Female (the one above) to the receiver (fig.3), right? acording to the manual i must use a DB9 male instead of the DB9 Female and swap the wires, right? </p><p></p><p><img src="http://www.cablesnmor.com/images/db9-db25-null.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p>fig.2</p><p></p><p>but then, how do i connect a DB male to the reciever, which as a RS-232 male (fig.3)?</p><p></p><p><img src="http://www.tvbabo.com/prod_image/recep_sci900_b_l.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>fig.3</p><p></p><p>or, am i confusing everything?</p><p>if that is the case, sorry for my ignorance but if someone could clarify this for me it would be much apreciated.</p><p></p><p>jpmm</p></blockquote><p></p>
[QUOTE="jpmm, post: 79368, member: 187204"] hello there. i a bit confused regarding to the creation of the "NULL MODEM" cable. after reading the ZackyFileS's manual of "How to construct a NULL MODEM cable" i came to the conclusion that the best option for me would be to modify an existent commercial cable. therefore and because I intend to use a notebook (parallel port) to communicate with the receiver (by the way, i intend to use the receiver Mirage sci900s - fig.3 ) could someone confirm if the cable i should use is the "Serial (RS232) null modem cable (DB9-DB25)" as in the fig.1? [img]http://www.pulsat.com/satellite/accessor/nullmodembig.jpg[/img] fig.1 my other question is as follows: so, using the fig. 2 , i should connect the DB25 Male (the one bellow) to the notebook and the DB9 Female (the one above) to the receiver (fig.3), right? acording to the manual i must use a DB9 male instead of the DB9 Female and swap the wires, right? [img]http://www.cablesnmor.com/images/db9-db25-null.jpg[/img] fig.2 but then, how do i connect a DB male to the reciever, which as a RS-232 male (fig.3)? [img]http://www.tvbabo.com/prod_image/recep_sci900_b_l.jpg[/img] fig.3 or, am i confusing everything? if that is the case, sorry for my ignorance but if someone could clarify this for me it would be much apreciated. jpmm [/QUOTE]
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The Work Bench and Soldering Station
help to build a "NULL MODEM" Cable !!!
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