Posts: 2,309
Threads: 116
Joined: Jun 2005
Yes. The HP-71B is trying to communicate on the HP-IL loop, and failing due to the lack of a loop. If you're not using any HP-IL devices, either connect a cable directly between the two ports, or give an "OFF IO" command.
If you use "OFF IO", to reenable I/O you use the "RESTORE IO" command. It always seemed to me that it should be "ON IO", but that doesn't work.
Posts: 887
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Joined: Jul 2007
Isn't the long time just to turn on, and it's fast after that? Mine always takes a couple of seconds upon turn-on to check out the loop before the time-out makes it conclude that the loop is broken since otherwise everything would have resonded by then, but after that everything has always been fast, even with no cable. I never use OFF IO but just leave I/O on all the time.
Edited: 7 Apr 2011, 2:44 p.m.
