* Information on various UPS configurations:   Rev 1.0 10-NOV-1999, DRM   Tripplite Omnismart LAN 2.2   J Cable 73-0724, provided by manufacturer with Omnismart 850.  Connectins asK determined with a multimeter.  DTR must be high (asserted), RTS must NOT be J asserted, and TxD must be idle (-MAX volts). Line fail drags CTS low.  Low4 battery should drag DCD (Carrier) low (Not tested!)      Computer         Omnismart    DCD 1  -------   6 low battery   RXD 2  (open) 9   TxD 3  -------   1 common for LineFail/LowBattery logic    DTR 4  --10K--   5 linefail     DTR 4  --10K--   6 low battery-   GND 5  -------   4 inverter shutdown ground    DSR 6  (open) 2   RTS 7  --10K--   2 inverter shutdown (when high)   CTS 8  -------   5 linefail    RI  9  (open) !                    3,7,8,9 (open)   3   Tcontrol parameters:   tta0: dtr "" "cts,carrier"    Tripplite Omnismart LAN 2.1   C   Unmarked cable which came with Omnismart 675.  VERY important not K   to send any data to this terminal line.  That will take TxD high and kill G   the inverter.   This unit is attached to a Linux box and has not been    tested with OpenVMS.     Computer         Omnismart   DCD 1  -------   1 common    RXD 2  (open) 2   TxD 3  -------   2 inverter shutdown (when high)   DTR 4  -------+    GND 5  (open) |    DSR 6  -------+ >   RTS 7  -------   3 shorts to omnismart pin 1 on line failure   CTS 8  (open) /   RI  9  (open)    4 return for inverter signal 4                    No connections to pins 5-9 (open)H                    Pin 6 shorts to pin1 when low battery is encountered,7                    but the cable did not provide a pin.      -   Tcontrol parameters:   tta0: rts "" carrier 