> > >Could anyone tell me how the pin-outs on an > >ATP connector(they are labeled 1,2,3) would > >map to a 25-pin connector, a modem port used > >for a serial connection(pins 2,3,7). > >This information would be appreciated asap. > > Per the DTC Cabling and Racking Guide (Part # 5961-0373) > Page 2-25 RS-232 DB25 direct connection to HP 3000 ATP > ports (3-pin connection) > > 25-pin male connector to DTC 3-pin male connector to ATP > 1-PGND > 2-RD (input) <-----------------------------3-ATP TD (output) > 3-TD (output)---------------------------->2-ATP RD (input) > 7-SGND------------------------------------1-ATP SGND > 8-RTS (output) > 22-CTS (input) > > Hope this helps. This pinout shows how to connect a DTC (25-pin) port to an ATP (3-pin) port for a 3000-to-3000 connection. In general: ATP pin 2 is the same as DB-25 pin 2 ATP pin 3 is the same as DB-25 pin 3 ATP pin 1 is the same as DB-25 pin 7 Thus, the example shown above is a "2-3 cross-over cable." -- -------------------------------------------------------------------- Ross Scroggs email: [log in to unmask] Telamon, Inc. CIS: 76011,2234 492 Ninth Street, Suite 310 voice: 510-987-7700 Oakland, CA 94607-4098 fax: 510-987-7009 --------------------------------------------------------------------