Trouble with HP 59309A Digital Clock
vp at drexel.edu
Thu Jun 21 11:39:17 CDT 2007
"Pat Walsh" <PWalsh at energysolutions.com> wrote:
> Just got one of these for a desk clock and need to
> know how to set the calendar addressed setting.
I have the manual but I won't be able to get to it for 1-2 months
(wrong continent :-). Do you want to know how to use it, or how to
repair it? The manual tells you both.
NOTE: Before you use it be sure to open the clock to check if the backup
9V battery is still inside. If so, you will hve a lot of cleaning
to do. Use lemon juice or vinegar to clean things up.
Using it as a desk clock is easy, you jsut power it up, open the metal
flap under the display on the front. You then press reset to clear the
clock and press the buttons to set he correct day of the year and time.
There is also a switch called INT/EXT (or smth) move it to the INT
position (internal time reference)
If you intend to keep the clock mostly powered off, do not bother to
install a battery inside, it will suck it dry in a day or two.
Controlling it via the HPIB is also easy, you just send a string
over HP-IB to set it and thn you can simply trigger it to read the
Also check the underside of the clock, it should contain instructions
on how to address it and set it remotely. Its pretty easy, depending
on what kind of HPIB controller you have. E.g. on the Series 80
you read it with smth like
INPUT 706, A$
and set it with , say,
OUTPUT 706, "RPDDDDDDDDDDDDHHMMMMMT"
R: reset clock
DDDDDDDDDDDD: advance teh day to the 12th of the year (Jan 12)
HH: advance hour to 2am
MMMMM: advance minute to 5,
T: start clock at 02:05 on Jan 12
This assumes that the clock is strapped as unit 6 of the HP-IB bus.
Most of the above is from memory (just looking at the underside of
my 59309A), so there may be some errors.
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