[time-nuts] buying a time interval counter

Brooke Clarke brooke at pacific.net
Wed Jun 29 13:20:22 EDT 2016

Hi Stephane:

I traded my HP 53132A counter for an SR 620.  The 53132 has what I'd call a user hostile interface, so if you are 
manually controlling the counter the SR 620 has a huge advantage.
I also like the long display on the 620 which can be read from across the room.

PS Stanford Research is a company founded by physicists and makes some really high quality stuff.  In fact some of the 
products HP/Agilent/Keysight sells are repackaged SR instruments.

The claim to fame for the HP 53132A is that it can make a frequency (not time interval) measurement to 1E12 in a 
second.  Here's how to get that same result with the SR620:

On the down side the printing functions on the 620 require an Epsom printer.  Does anyone have a solution for that?

PS SR also makes a 10 MHz crystal oscillator that has options trading stability for aging as well as the EFC tuning 
polarity and range so as to match other OCXOs.

At one point they were looking into making a GPS time receiver where the cable length calibration would be built-in.

Have Fun,

Brooke Clarke
The lesser of evils is still evil.

-------- Original Message --------
> Hello there,
> I'm planning to buy a such instrument in order to do some frequency stability measurement at work. The SR620 seems to 
> be discontinued. What model still distributed would you think is good for that at the moment ?
> Thanks & cheers
> Stephane
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

More information about the time-nuts mailing list