APC BackUPS dumb cable (on-battery only) pinout

connector or cable wiring

9 pin D-SUB female connector
to the computer

This cable can only be used on voltage-signalling UPSes, and apparently only provides the On Battery signal. As a consequence, this cable is pretty much useless, because all APC UPSes support more than just On Battery.

     
     Signal Computer                  UPS
            DB9F                     DB9M
      DCD    1   --------------------  2  On Battery
     
                   3.3K ohm
      TxD    3   --[####]-*
                          |
      DTR    4   ---------*
      GND    5   ---------------*----  4  Ground
                                |
                                *----  9  Common

not sure the following diagram is correct

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9 pin D-SUB male connector
to the UPS

Pinouts.ru > GPS, UPS, Switches and other devices cables and adapters schematics > Pinout of APC BackUPS dumb cable (on-battery only) and layout of 9 pin D-SUB female connector and 9 pin D-SUB male connector	Document status:	unknown
Source(s) of this and additional information: www.apcupsd.com	0 reports
Last updated at Thu Jan 10 2008. Submit additions or corrections for this document.	Is this document correct or incorrect? What is your opinion?

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