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HB9WOE > APPLE 23.05.96 16:20l 19 Lines 784 Bytes #-11115 (0) @ WW
BID : 235601HB9OS
Read: DH9MEC GUEST DK3EL
Subj: Re. Serial switch
Path: DB0AAB<DB0KCP<HB9OS
Sent: 960523/1208z @:HB9OS.CHE.EU [DRC Ost-Schweiz] $:235601HB9OS
de HB9WOE @ HB9OS.CHE.EU (Dieter)
to APPLE @ WW
Hi Dan,
perhaps it's because in normal serial cables for the Mac the tx and rx wires
are crossed, so that the tx of the Mac is connected to rx of the TNC or
printer. If you're using now one such serial cable to connect the switch with
the Mac and a second cable to connect the switch to the printer, you're
exchanging two times rx and tx and if the switch itsself doesn't cross the
rx and tx wires, the tx of the Mac is connected to the printer's tx and the
same happens to the rx wires.
If this is the reason, you need to replace the cable between Mac and switch
by a cable that doesn't cross tx- and rx-wires (if available) or you have to
cross the rx and tx wires in the switchbox.
73 and 55 de Didi, HB9WOE @ HB9OS CHE.EU
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