17 Aug
2008
17 Aug
'08
12:34 p.m.
Can anyone identify the power control connectors used on the H7874 power
supplies in the DEC BA4xx boxes? They look a lot like RJ-45s, but there are
some extra ridges in them so that an RJ style plug won't fit. And the
contact arrangement is different, so it probably wouldn't work even if it
did fit.
I'm trying find a cable so I can daisy chain the power control on a couple
of cabinets, or matching connectors so that I can make my own.
Thanks,
Bob Armstrong
17 Aug
17 Aug
5:26 p.m.
On 17/08/2008 17:34, Bob Armstrong wrote:
Can anyone identify the power control connectors
used on the H7874 power
supplies in the DEC BA4xx boxes? They look a lot like RJ-45s, but there are
some extra ridges in them so that an RJ style plug won't fit. And the
contact arrangement is different, so it probably wouldn't work even if it
did fit.
I can't tell you about the wiring. The plugs are called 2x3LNL or 2x3
L-N-L ("Latch-N-Lok") plugs, and are sometimes used on powered USB
cables (which is what they're designed for). They're 0.1" pitch, so
Molex KK or equivalent AMP or Berg connectors should mate with them.
The DEC cables are called BC09F-10 (the -10 is the length) for the ones
that interconnect BA4xx boxes, and BC09G-10 for the ones that have a
different plug on the other end, for connecting BA4xx to BA2xx.
--
Pete Peter Turnbull
Network Manager
University of York
7:30 p.m.
Can anyone
identify the power control connectors used on the H7874
power supplies in the DEC BA4xx boxes?
The plugs are called 2x3LNL or 2x3 L-N-L
("Latch-N-Lok") plugs, and
are sometimes used on powered USB cables (which is what they're
designed for).
18 Aug
18 Aug
3:38 a.m.
On 18/08/2008 00:30, der Mouse wrote:
You're saying USB predates the H7874? Either USB is a _lot_ older than
I ever thought, or I'm totally wacked out about what the DEC kit being
discussed here is....
No, of course not :-) But powered USB cables that use those plugs are
about the only use for them now, and the designers/manufacturers
actually describe the current types as being designed for powered USB.
--
Pete Peter Turnbull
Network Manager
University of York
Can anyone identify the power control connectors used
on the H7874
power supplies in the DEC BA4xx boxes?
The plugs are called 2x3LNL or 2x3 L-N-L
("Latch-N-Lok") plugs, and
are sometimes used on powered USB cables (which is what they're
designed for).
11:32 a.m.
Pete Turnbull wrote:
No, of course not :-) But powered USB cables that use those plugs are
about the only use for them now, and the designers/manufacturers
actually describe the current types as being designed for powered USB.
All USB is powered by definition, and the connectors are fixed by the
USB-IF, www.usb.org.
I'm thinking you mean UTP, as in 10base-T networks?
In any event, thanks for the pointers to the cables.
Bob
11:55 a.m.
On 18/08/2008 16:32, Robert Armstrong wrote:
No, powered USB. Go look it up :-) It is a way of allowing more power
to the device(s), by using extra wires to carry 5V, 12V or 24V at up to 6A.
Power-over-Ethernet, or PoE, is quite different -- it carries phantom
power at 48V.
--
Pete Peter Turnbull
Network Manager
University of York
Pete Turnbull
wrote:
No, of course not :-) But powered USB cables that use those plugs are
about the only use for them now, and the designers/manufacturers
actually describe the current types as being designed for powered USB.
All USB is powered by definition, and the connectors are fixed by the
USB-IF, www.usb.org.
I'm thinking you mean UTP, as in 10base-T networks?
In any event, thanks for the pointers to the cables.
1:06 p.m.
Pete wrote:
No, powered USB. Go look it up :-)
I stand corrected - http://www.poweredusb.org/
Well, how about that :-)
Bob
1:33 p.m.
http://www.poweredusb.org/
<rant on>
Good grief, not another LNL connector! I despise those things
something awful. Stupid locking tabs that eventually get brittle and
break off. It might have worked okay for telephones (I'm not
convinced of that entirely), but for frequently-connected and dis-
connected USB devices? [groan] I assume that it's done that way for
one reason--because it's cheap.
<rant off>
Cheers,
Chuck
3:29 p.m.
On Mon, 2008-08-18 at 10:33 -0700, Chuck Guzis wrote:
http://www.poweredusb.org/
<rant on>
Good grief, not another LNL connector! I despise those things
something awful. Stupid locking tabs that eventually get brittle and
break off. It might have worked okay for telephones (I'm not
convinced of that entirely), but for frequently-connected and dis-
connected USB devices? [groan] I assume that it's done that way for
one reason--because it's cheap.
From past experience, with IBM EPOS equipment, the
connectors are pretty
tough - not brittle polycarbonate like RJ45 plugs, but a kind
of "chewy"
polyurethane. For the very very few connect/disconnect cycles
anticipated, they're way overspecified.
Not even the most ham-fisted field circus engineer could break them.
Gordon
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participants (5)
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bob＠jfcl.com -
cclist＠sydex.com -
gordon＠gjcp.net -
mouse＠Rodents-Montreal.ORG -
pete＠dunnington.plus.com