31 Mar
2005
31 Mar
'05
9:47 a.m.
This is probably gonna be a really easy question for you guys; is this
http://www.mansier.net/10base5terminator.jpg a 10base5 (thick ethernet)
terminator ?
Thanks!
Stefan.
-------------------------------------------------------
http://www.mansier.net
31 Mar
31 Mar
10:01 a.m.
On Thu, 31 Mar 2005 19:47:04 +0200, Stefan <birs23 at zeelandnet.nl> wrote:
This is probably gonna be a really easy question for
you guys; is this
http://www.mansier.net/10base5terminator.jpg a 10base5 (thick ethernet)
terminator ?
Err, wasn't thicknet (DIX) the one with DB-15 / AUI transcievers,
vampire clamps, and so forth?
-dhbarr.
PS: That connector looks odd to me. My coax net has BNC T's on it and
a reflector on the end. Maybe we're not talking about the same
things?
10:13 a.m.
>>>> "David" == David H Barr
<dhbarr at gmail.com> writes:
David> On Thu, 31 Mar 2005 19:47:04 +0200, Stefan
David> <birs23 at zeelandnet.nl> wrote:
> This is probably gonna be a really easy question
for you guys; is
> this http://www.mansier.net/10base5terminator.jpg a 10base5 (thick
> ethernet) terminator ?
David> Err, wasn't thicknet (DIX) the one with DB-15 / AUI
David> transcievers, vampire clamps, and so forth?
Yes, but the cable is 50 ohm coax, roughly the size of RG-8, with N
connectors.
David> PS: That connector looks odd to me. My coax net has BNC T's
David> on it and a reflector on the end. Maybe we're not talking
David> about the same things?
Indeed. If you have BNC connectors, then you have 10Base2
("Thinnet"). And the thing on the end is a terminator, not a
reflector -- its job is to PREVENT reflections...
paul
10:29 a.m.
Hehe, could be I am mixing a dozen different things here... :-P
I have several of these and some of them say 50 Ohm.
At 20:01 31-3-2005, you wrote:
On Thu, 31 Mar 2005 19:47:04 +0200, Stefan <birs23
at zeelandnet.nl> wrote:
-------------------------------------------------------
http://www.oldcomputercollection.com
This is probably gonna be a really easy question
for you guys; is this
http://www.mansier.net/10base5terminator.jpg a 10base5 (thick ethernet)
terminator ?
Err, wasn't thicknet (DIX) the one with DB-15 / AUI transcievers,
vampire clamps, and so forth?
-dhbarr.
PS: That connector looks odd to me. My coax net has BNC T's on it and
a reflector on the end. Maybe we're not talking about the same
things?
10:11 a.m.
>>>> "Stefan" == Stefan
<birs23 at zeelandnet.nl> writes:
Stefan> This is probably gonna be a really easy question for you
Stefan> guys; is this http://www.mansier.net/10base5terminator.jpg a
Stefan> 10base5 (thick ethernet) terminator ?
Maybe, but maybe not.
It looks more like a used "N" type coax connector, crimp style, that
has had the cable pulled off.
But you can't actually tell from this end; if it's a used connector,
the back end would be open (you could look into the guts). If it's a
terminator, the back end would look like a closed metal cylinder,
inside of which is a 50 ohm resistor.
You can check with an ohm-meter -- you should see 50 ohms between the
pin and the cylindrical contact.
paul
10:15 a.m.
On Thu, 31 Mar 2005 19:47:04 +0200
Stefan <birs23 at zeelandnet.nl> wrote:
This is probably gonna be a really easy question for
you guys; is this
http://www.mansier.net/10base5terminator.jpg a 10base5 (thick
ethernet) terminator ?
Yes. At least it has the type N connector usually found on
the RG213
style cable used for thick Ethernet.
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
10:28 a.m.
Looks kinda big, you sure thats not the end of a Twinax cable? The
cable side tip doesn't look like its a cap with a resistor in it, looks
like a standard tip with a cable pulled off of it.
Curt
Jochen Kunz wrote:
On Thu, 31 Mar 2005 19:47:04 +0200
Stefan <birs23 at zeelandnet.nl> wrote:
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.8.6 - Release Date: 3/30/2005
This is probably gonna be a really easy question
for you guys; is this
http://www.mansier.net/10base5terminator.jpg a 10base5 (thick
ethernet) terminator ?
Yes. At least it has the type N connector usually found on the RG213
style cable used for thick Ethernet.
11:15 a.m.
Rumor has it that Curt @ Atari Museum may have mentioned these words:
Looks kinda big, you sure thats not the end of a Twinax
cable?
It can't be Twinax - Hence the name, Twinax has 2 center conductors, which
come out to 2 center pins, not just one.
Laterz,
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger | "Profile, don't speculate."
SysAdmin, Iceberg Computers | Daniel J. Bernstein
zmerch at 30below.com |
12:58 p.m.
Ah, I always thought it was because of the pair of connectors you had to
hook up to the 5250 terminals.
Curt
Roger Merchberger wrote:
Rumor has it that Curt @ Atari Museum may have
mentioned these words:
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.8.6 - Release Date: 3/30/2005
Looks kinda big, you sure thats not the end of a
Twinax cable?
It can't be Twinax - Hence the name, Twinax has 2 center conductors,
which come out to 2 center pins, not just one.
Laterz,
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger | "Profile, don't speculate."
SysAdmin, Iceberg Computers | Daniel J. Bernstein
zmerch at 30below.com |
1:15 p.m.
Rumor has it that Curt @ Atari Museum may have mentioned these words:
Ah, I always thought it was because of the pair of
connectors you had to
hook up to the 5250 terminals.
Googling around, I found a good big picture of a Twinax female->female
connector:
http://www.connectworld.net/cgi-bin/iec/fullpic?7gsZHtYu;TWINAXF-F;6
And a decent picture of the associated male Twinax terminator:
http://www.connectworld.net/cgi-bin/iec/fullpic?7gsZHtYu;L0209;28
That's Twinax... ;-)
Quite often nowadays, Twinax is run on pins 4 & 5 of an Ethernet cable, and
have a Twinax Balun on either end...
HTH,
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger -- SysAdmin, Iceberg Computers
zmerch at 30below.com
What do you do when Life gives you lemons,
and you don't *like* lemonade?????????????
3:09 p.m.
Man I'm getting old.... I used to install that stuff back in 89-91 and
I've like totally forgotten all about it :-)
Curt
Roger Merchberger wrote:
Rumor has it that Curt @ Atari Museum may have
mentioned these words:
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.8.6 - Release Date: 3/30/2005
Ah, I always thought it was because of the pair
of connectors you had
to hook up to the 5250 terminals.
Googling around, I found a good big picture of a Twinax female->female
connector:
http://www.connectworld.net/cgi-bin/iec/fullpic?7gsZHtYu;TWINAXF-F;6
And a decent picture of the associated male Twinax terminator:
http://www.connectworld.net/cgi-bin/iec/fullpic?7gsZHtYu;L0209;28
That's Twinax... ;-)
Quite often nowadays, Twinax is run on pins 4 & 5 of an Ethernet
cable, and have a Twinax Balun on either end...
HTH,
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger -- SysAdmin, Iceberg Computers
zmerch at 30below.com
What do you do when Life gives you lemons,
and you don't *like* lemonade?????????????
5:46 p.m.
Googling around, I found a good big picture of a
Twinax
female->female connector:
And a decent picture of the associated male Twinax
terminator:
Those are actually pages that contain the pictures. The pictures
themselves, for anyone who wants just them, turn out to be at
http://www.connectworld.net/iecnet/images/jpeg/L0209.jpg and
.../jpeg/TWINAXF-F.jpg.
/~\ The ASCII der Mouse
\ / Ribbon Campaign
X Against HTML mouse at rodents.montreal.qc.ca
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11:38 a.m.
On Thu, 31 Mar 2005 13:28:57 -0500
"Curt @ Atari Museum" <curt at atarimuseum.com> wrote:
Looks kinda big, you sure thats not the end of a
Twinax cable?
This is a N connector for sure. I own thick Ethernet transceivers,
cables, terminators etc. with this connectors and I also use N
connectors for my WLAN antennas.
BTW: You can use N-to-BNC adapters and connect thick to thin Ethernet
this way. This is not covered by any Ethernet standard, but it works.
(At least for the short cables I used when I tried this.)
The cable side tip doesn't look like its a cap
with a resistor in it,
looks like a standard tip with a cable pulled off of it.
Yes, it may be a connector
for RG58 style cable. But a terminator should
be easy to distinguish from a connector by looking at the backside.
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
12:14 p.m.
I'm 100% convinced now from all the reply's that these indeed are terminators.
Thanks all!!
Stefan.
At 21:38 31-3-2005, you wrote:
On Thu, 31 Mar 2005 13:28:57 -0500
"Curt @ Atari Museum" <curt at atarimuseum.com> wrote:
-------------------------------------------------------
http://www.oldcomputercollection.com
Looks kinda big, you sure thats not the end of a
Twinax cable?
This is a N connector for sure. I own thick Ethernet transceivers,
cables, terminators etc. with this connectors and I also use N
connectors for my WLAN antennas.
BTW: You can use N-to-BNC adapters and connect thick to thin Ethernet
this way. This is not covered by any Ethernet standard, but it works.
(At least for the short cables I used when I tried this.)
The cable side tip doesn't look like its a
cap with a resistor in it,
looks like a standard tip with a cable pulled off of it.
Yes, it may be a connector
for RG58 style cable. But a terminator should
be easy to distinguish from a connector by looking at the backside.
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/ 
12:27 p.m.
From: "Stefan" <birs23 at zeelandnet.nl>
Sent: Thursday, March 31, 2005 2:14 PM
I'm 100% convinced now from all the reply's
that these indeed are
terminators.
Thanks all!!
Stefan.
<snip>
You can be 110% sure by measuring resistance between tip and shield, ~50ohms
and it's a terminator.
Randy
12:21 p.m.
On Thu, 31 Mar 2005 13:28:57 -0500, Curt @ Atari Museum
<curt at atarimuseum.com> wrote:
Looks kinda big, you sure thats not the end of a
Twinax cable? The
cable side tip doesn't look like its a cap with a resistor in it, looks
like a standard tip with a cable pulled off of it.
Twinax has two conductors... that's why it's called 'twin-ax'... Twin
Axial Conductors.
The picture looks to me like an N connector (which _was_ one of the
connectors used for 10Base5 terminators and intrusive taps). Not sure
if that is a terminator or not, but as already pointed out, if you get
50 ohms between the center conductor and the shell, that will show it
for sure.
-ethan
6972
days inactive
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15 comments
9 participants
participants (9)
-
birs23＠zeelandnet.nl -
cctalk＠randy482.com -
curt＠atarimuseum.com -
dhbarr＠gmail.com -
ethan.dicks＠gmail.com -
jkunz＠unixag-kl.fh-kl.de -
mouse＠Rodents.Montreal.QC.CA -
pkoning＠equallogic.com -
zmerch＠30below.com