Topics

HP9000/340, HP-UX 9, Bad or missing LAN hardware

Anders
 

Any ideas?

I do not have a 10Mb/s hub (yet), but I plugged a 50 ohm teminator into the network BNC socket, via cable.

Anders
 

Diags claimed that I had excess collisions. A slightly longer cable and a termination at the other end seems to have fixed that. Not surprising :) Now lan0 is operational. I have located a 10mb/s Hub with coax that someone will lend me. This will be so exciting!

Stephen Hanselman
 

It should be a “tee” with a 50 ohm term on each side. When it’s installed a co-ax back bone is terminated w/ 50 ohm at each end.  Also look at the board and hunt for a 
“Tied together“ 8 pin ( I think) header. That is used to select, in some LAN boards, between the Thin-LAN co-ax BNC and the thick-lan AUI DB15 connector


Regards,

 

Stephen Hanselman

Datagate Systems, LLC




On May 24, 2020, at 00:13, Anders <anders.gustafsson@...> wrote:

Any ideas?
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I do not have a 10Mb/s hub (yet), but I plugged a 50 ohm teminator into the network BNC socket, via cable.

Anders
 

Thanks. Yes, but sadly was much of the thin coax stuff I once had gone, so I had to improvise the otgher terminator. Seems to work now and I will test connecting to the internet once I get that hub I have been promised. This unit only has BNC. No AUI. Had it then it had been the perfect cantidate for those AUI to Fiber that I have saved :)

rmb_guru
 

Anders,

If you have the DIO I card slot available on your HP9000/340, I could send you a HP98643A LAN card and a AUI-to-Ethernet Transceiver.  The HP98643A LAN card should work on your HP9000/340 as it works with other Series 300 computers.  I would willing to trade them for one of your latest working HPdisk boards. 

Anders
 

Thanks for the offer, but I think I have it sorted. It appears to have been a too short cable and/or improper termination. I will test more once I get that hub with a BNC connector.

Anders
 

I was able to give it an IP address and I am able to ping it :)