Trouble with HP 59309A Digital Clock

From: Joe <>
Date: Tue Aug 26 13:39:07 2003

At 02:13 AM 8/22/03 -0400, you wrote:
>I am trying to get that thing to send the current time to an HP-87
>but so far it is refusing to work.
>I have succeded in sending commands TO the clock (e.g. OUTPUT 717;"P" stops
>the clock while OUTPUT 717;"T" restarts it). After both commands the
>"ADDRESSED" LED comes on, but if I do a ENTER 717;A$ the HP-87 freezes.
>I do not have the manual, so I am bit lost.
>I also have a couple of questions regarding this machine:
>a) What does the INT/EXT switch do? My machine appears to work only when the
> switch is in the INT position.

   That is correct. The Ext/Int switch controls wheather it uses an
external or internal clock. With it in Ext position and no external clock
source attached it will never count.

>b) Both data and time digits have their decimal points lit. Is this normal?
> Can I turn them off?

    IIRC that means that the clock hasn't been set yet. You do know that
the front panel on these opens don't you? Underneath you'll find the
switchs to set the time and some other things.

   I have a manual for these SOMEWHERE I can try to find it if you need it.

Received on Tue Aug 26 2003 - 13:39:07 BST

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