[time-nuts] problem with HP 59309A digital clock and HP IL/IB interface
h.holzach at vtxmail.ch
Thu Aug 2 16:20:03 EDT 2012
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
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
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!
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