Re: [time-nuts] 5370A

2021-02-10 Thread paul swed
Hello to the group I diid put together a strange replacement for a counter some time ago. I used the typical 1016 ecl chip. But the real chips a lot more clever than that. As I recall the slicing level also goes into that chip. I remember its was more complicated than I had thought. Regards Paul WB

Re: [time-nuts] 5370A

2021-02-10 Thread Magnus Danielson
Hi, This was to some degree out of necessity that they had to design some chips to meet their needs, but as it was done "in house", it was also an opportunity to get ahead competition. They have done some pretty strange chips through the day. They often had a separate article in HP Journal to show

Re: [time-nuts] 5370A

2021-02-10 Thread Bob kb8tq
Hi The gotcha with pretty much all HP counters is that the front end chips are non-standard. In some cases they are part of a multi chip module that is non-standard. Option one is to find a parts donor on eBay and transplant the front panel of your 5370, 5334, 5335, 53131,53230 …. and fix it tha

[time-nuts] 5370A

2021-02-10 Thread Herbert Diensthuber
Hi all Sorry to say but I just managed to damage one of the input channels of my trusted HP 5370A. If someone could get me pointed in the right direction where to get or purchase the input IC amplifier I would very much appreciate it. Comments or replies please send them to my email! Thank you ve