"Pat Walsh" <PWalsh at energysolutions.com> wrote: Hi, 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 time. 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. **vp