[time-nuts] Can one update firmware of Stanford Research Systems SR620 time interval counter?

lincoln lincoln at ampmonkeys.com
Mon Jan 19 18:06:34 EST 2015

Hello Dave,
	That is the same firmware version as mine, I cant tell you if that is the most current.


On Jan 2, 2015, at 12:50 PM, Dr. David Kirkby (Kirkby Microwave Ltd) <drkirkby at kirkbymicrowave.co.uk> wrote:

> I'm just in the process of trying to look at writing some GPIB
> software for my SR620, which is a fairly new arrival. I paid $950 for
> it, which I think was pretty good, considering it has the high
> stability time base.
> Anyway, the first thing after setting the GPIB address to something
> that did not clash with other equipment I had, was to send it the
> usual *IDN? to hopefully get some response from it. Sure enough, it
> did respond with:
> drkirkby at buzzard:~/SR620-1/src$ ./tic  15
> StanfordResearchSystems,SR620,03154,1.48
> e
> I was a bit surprised by the letter "e" on another line, but anyway,
> that is what it did. According to the manual,
> "This string is in the format:
> StanfordResearchSystems, SR620, serial number,
> version number. Where "serial number" is the five
> digit serial number of the particular unit, and
> "version number" is the 3 digit firmware version
> number."
> So it looks like I have firmware 1.48.
> Does anyone know the latest firmware, whether it is possible to update
> the firmware, and if so how? Also, does anyone have a lit of the
> changes between firmware releases? If there are some major bugs fixed,
> I'd be more keen to update, but if the changes are quite minor, I am
> less inclined to bother.
> Dave
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