[time-nuts] problem with HP 59309A digital clock and HP IL/IB interface

Pete Lancashire pete at petelancashire.com
Thu Aug 2 22:15:35 UTC 2012

Have you joined and posted your question to the Yahoo Agilent/HP group ?

It is a much bigger group and has been very helpful to me in the past


On Thu, Aug 2, 2012 at 1:20 PM, Hans Holzach <h.holzach at vtxmail.ch> wrote:
>    hi all,
>    i have a small collection of old HP calculators, with the hp 71b being
>    my favourite. as a watchmaker i thought it might be a good idea to add
>    a digital clock HP 59309A to my collection. but this cost my quite a
>    few hours of sleep as i encountered an unexpectd problem that i can't
>    solve.
>    i have already posted this problem to the forum of the HP-Museum, but
>    unfortunately i could not get a solution. so i thought i should try it
>    here.
>    i have an hp 71b connected via HP-IL (version 1B) to an hp 82169C
>    HP-IL/HP-IB interface (DEVID$ is HP82169A, though). an HP digital clock
>    HP59309A is connected to the HP-IB interface.
>    the IL/IB interface is in translator mode, hp-il address 3. the clock
>    is addressable, address is 11.
>    i can control the clock (set time, stop etc.) without problem (e.g.
>    OUTPUT 11;"R" resets the clock). but i am not able to read from the
>    clock. my latest attempt to read from the clock looked like this:
>    SEND TALK11 (ADDRESSED light of the clock is now permanently on)
>    ENTER :11 USING "#,9A";D$ (i also tried 10A, 11A etc. and ENTER LOOP)
>    then the loop freezes, the hp71 does not respond to pressed keys, and
>    the T/R light on the interface and the ADDRESSED light on the clock are
>    permanently on. to continue i have to reset the hp-il interface.
>    any help to solve this mistery would be much appreciated!
>    thanks,
>    hans
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