UPS Cable

Anyone know the connections on a PC to APC Smart-UPS 700, I've just been
given one and I'd rather make my own than spend out £25+ for one from APC,
Looking at their site it's a 9 PIN D to 9 PIN D but unfortunately they don't
tell you what pin connects to what pin, I wonder why?? LOL :0)

On Tue, 24 Jun 2003 19:05:19 +0100, "ChrisR"
wrote:

Anyone know the connections on a PC to APC Smart-UPS 700, I've just been
given one and I'd rather make my own than spend out £25+ for one from APC,
Looking at their site it's a 9 PIN D to 9 PIN D but unfortunately they don't
tell you what pin connects to what pin, I wonder why?? LOL :0)

You cant't make your own cable, they are very special!
Top secret!

"ChrisR" wrote in message
...
Anyone know the connections on a PC to APC Smart-UPS 700, I've just been
given one and I'd rather make my own than spend out £25+ for one from APC,
Looking at their site it's a 9 PIN D to 9 PIN D but unfortunately they
don't
tell you what pin connects to what pin, I wonder why?? LOL :0)



I have the identical UPS and have answered this question before. After
doing some searching I located an old post and this is the gist of it:

Female 2 ---------- Male 2
Female 3 ---------- Male 1
Female 5 ---------- Male 9

All other pins are disconnected and there appear to be no jumpers between
any of the pins and the female or male ends.
--
John McGaw
[Knoxville, TN, USA]

Return address will not work. Please
reply in group or through my website:
http://johnmcgaw.com

Like what? any clues?

"Ken" wrote in message
...
On Tue, 24 Jun 2003 16:46:37 -0400, "John McGaw"
wrote:

I have the identical UPS and have answered this question before.
After doing some searching I located an old post and this
is the gist of it:

Female 2 ---------- Male 2
Female 3 ---------- Male 1
Female 5 ---------- Male 9

All other pins are disconnected and there appear to be no
jumpers between any of the pins and the female or male ends.

Some electronic components are included in the cable.

ChrisR ) wrote: : Like what? any clues?

: "Ken" wrote in message
: ...
: On Tue, 24 Jun 2003 16:46:37 -0400, "John McGaw"
: wrote:
:
: I have the identical UPS and have answered this question before.
: After doing some searching I located an old post and this
: is the gist of it:
:
: Female 2 ---------- Male 2
: Female 3 ---------- Male 1
: Female 5 ---------- Male 9
:
: All other pins are disconnected and there appear to be no
: jumpers between any of the pins and the female or male ends.
:
: Some electronic components are included in the cable.
:

I know less than nothing about any UPS cable .... but it does twig my
curiosity when the same respondent first says that "you can't make your
own. They are top secret." and then, when someone posts pinouts, he
follows up with "electronic components are included in the cable".

I suppose he could be referring to wires and insulation as electronic
components?

If I had a cable, I would be taking measurements for all possible pin
combinations right about now .... just to satisfy my curiosity.
(Measurements would include resistance, diode check, inductance,
capacitance, and maybe a few others depending on what the first ones
revealed.)
Be careful if you try this though. Some meters use up to 9V for some
tests and that can fry some low voltage components ... if there are any.

Ben F.

"ChrisR" wrote in message
...
Like what? any clues?

"Ken" wrote in message
...
On Tue, 24 Jun 2003 16:46:37 -0400, "John McGaw"
wrote:

I have the identical UPS and have answered this question before.
After doing some searching I located an old post and this
is the gist of it:

Female 2 ---------- Male 2
Female 3 ---------- Male 1
Female 5 ---------- Male 9

All other pins are disconnected and there appear to be no
jumpers between any of the pins and the female or male ends.

Some electronic components are included in the cable.



Chris,

Did the pinout I gave you not work? If so I apologize -- had never
considered the possibility of components in the cable. Guess I could go back
and do some more probing to look for items like diodes and resistors (I
don't have the equipment required to detect smallish capacitors).
--
John McGaw
[Knoxville, TN, USA]

Return address will not work. Please
reply in group or through my website:
http://johnmcgaw.com

On Sat, 28 Jun 2003 12:15:05 +0100, "ChrisR"
wrote:

Have been too busy to try it yet but I must say Ken has got me
a bit worried (might that have been his plan?) as to what
might also be in the cable/connectors, I really don't want
to damage either my PC or the UPS.

I been there. I had some problems to get my UPS to communicate
with my computer. The cable attached to my APC UPS was an USB cable,
but that didn't work. Instead I tried to connect to the COM-port
because the UPS had that possibility to, but I couldn't get it working
with my own homemade cable.
I called the APC support and they told me that the cable include some
electronic komponents. They send me the right serial cable for free!

Call the support!