[time-nuts] buying a time interval counter

[Brooke Clarke]

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.
http://www.prc68.com/I/TandFTE.shtml#SR620

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:
http://www.prc68.com/I/FTS4060.shtml#SR620Fast

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.
http://prc68.com/I/TandFTE.shtml#SC10

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
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
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
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