[time-nuts] Z3805 utility, Was: AW: (no subject)

[Robert Benward]

Ah man!!!  I had some of those red APC UPS cables!!!  Drove me crazy!!!

Bob

----- Original Message ----- 
From: "Hal Murray" <hmurray at megapathdsl.net>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Monday, May 24, 2010 2:51 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)


>
>> Anyway, the key was having "null modem adapters" that are clearly
>> identified as such, and everything else straight through.
>
> I've had pretty good luck with the same sort of approach.
>
> One aspect that hasn't been discussed much is the sex of the connectors. 
> PCs
> have male DB-9s.  The other type of gear usually has female (eg TBolt) so
> most of the time a straight-through M-F cable is all you need.  They are 
> also
> handy as extension cords.
>
> My null-modems are F-F DB-9s.  I use cables rather than tiny gizmos.
>
> I think I have a few M-F null modem cables to handle the strange cases, 
> but I
> consider them to be evil and try to keep them from getting mixed up with 
> the
> good cables.  (I know we had a handful of them at work because I botched 
> the
> first try at a board. Sigh.)
>
> For totally evil, don't forget the cables used by APC UPS boxes.  At least
> they are black rather than grey.
>
> I mark cables with || or X.
>
>
>
>
>
>
> -- 
> These are my opinions, not necessarily my employer's.  I hate spam.
>
>
>
>
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