Okay, that was weird, it didn't post all of my reply... Here's the rest from my previous message.
>From what I have read, you can put replace a 10544A with a 10811 without any problems (backwards compatible), but the reverse is not always true. Anyhow, James gave this bit of info: In reply to your Time-Nuts question. The smaller PCB was used in early equipment (such as the HP5328A counter), with the 10544A oscillator. It has just the basic elements to support the oscillator; essentially a voltage regulator and a little filtering here and there. The larger board was introduced later and included the above, but also extra stuff to provide: * Automatic detection of external 10 MHz source * Buffered 1 MHz and 10 MHz to the external world. * Support for 10544A and 10811A oscillator (little difference electrically) _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
