26 Aug
2005
26 Aug
'05
10:09 a.m.
On Thu, 25 Aug 2005 Simon Fryer <fryers at gmail.com> wrote:
The BNC connectors are a bit novel if it is SDI.
It's not SDI.
Hard to tell much from the information given, since the cards don't have
any identifiers.
But was the the DMP-11 or DMR-11 which used coax? It could be one of
those. Max 1 Mb/s interface, also for network.
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
On Thu, 25 Aug 2005 12:16:22, Joe R. <rigdonj at
cfl.rr.com> wrote:
Barely. It's true that SDI internally are four thin coax cables, but
neither connectors, nor much else looks like SDI here.
Does anyone recognize this card?
<http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/network%20card.jpg
Cabling looks like SDI. I found it in a PDP-11/44 but I couldn't find a
model number or
manufacturer's name on it. The other end of the four red cables
connect to
four BNC connectors on the back of the cabinet and are marked Network
Ports. see
<http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/back3.jpg> 
26 Aug
26 Aug
1:38 p.m.
>>>> "Johnny" == Johnny Billquist
<bqt at Update.UU.SE> writes:
Johnny> Hard to tell much from the information given, since the cards
Johnny> don't have any identifiers. But was the the DMP-11 or DMR-11
Johnny> which used coax? It could be one of those. Max 1 Mb/s
Johnny> interface, also for network.
No, that doesn't fit. The DDCMP "local mode" interfaces, coax at up
to 1 Mb/s, DMC, DMR, DMP, or DMV, all are single line. So they use
one pair of coax, not two. Also, the standard back panel for those
uses a 4 pin plastic circular connector, not proper coax connectors.
paul
10:12 a.m.
At 09:43 AM 8/26/05 -0400, you wrote:
Johnny> Hard to tell much from the information
given, since the cards
. . .
Yes it probably was a GenRad Machine. Many of the puters from this
source were. Did GenRad have their own non-standard network? I'll look at
the connectors more closely but I'm fairly sure that they're not
MIL-STD-1553 connectors. I have several 3rd party 1153 cards for DECs so I
am familar with them and the connectors. I would have checked it more
thoroughly when I unloaded it but by that time I was sweating so bad that I
could see any more and I was dripping sweat all over everything so I had to
quit. Florida summer heat and humidity are a killer!
Joe
No, that doesn't fit. The DDCMP "local
mode" interfaces, coax at up
Wasn't this from the GenRad machine? That might be a clue. 
8:06 p.m.
Hard to tell much from the information given, since the cards don't have
any identifiers.
But was the the DMP-11 or DMR-11 which used coax? It could be one of
those. Max 1 Mb/s interface, also for network.
It's not a DMC-11, KMC-11, or DMR-11. I have all 3, and they look nothing
like that. In fact I am not convinced this is a Digital-made board.
-tony
6:55 p.m.
At 09:06 PM 8/26/05 +0100, you wrote:
I never indicated that it was a DEC made board and I strongly doubt that
it is. If it was a DEC made board it would have a model number and other
info that would identify it and I would have been able to find it somewhere
online. There is no manufacturer's idenfication of any type on it and no
model number, name or any other identifying marks. It MAY be something that
was added when this system was modified for use by GenRad but I don't think
it's a GenRad card either. They're usually marked and are built out of
different PCB material and look different from this one.
Joe
Hard to tell much from the information given, since the cards don't have
any identifiers.
But was the the DMP-11 or DMR-11 which used coax? It could be one of
those. Max 1 Mb/s interface, also for network.
It's not a DMC-11, KMC-11, or DMR-11. I have all 3, and they look nothing
like that. In fact I am not convinced this is a Digital-made board.
-tony
27 Aug
27 Aug
8:29 p.m.
It's not a DMC-11, KMC-11, or DMR-11. I have all 3,
and they look nothing
like that. In fact I am not convinced this is a Digital-made board.
I brought up the GenRad aspect of this thinking not that they were for
network, but rather for signal sensing. Something like digital X-Ray work.
John A.
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ard＠p850ug1.demon.co.uk -
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