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Stanford research SR620 time intrval frequency counter


this is a stanford research systems sr620
SR620 — Time interval and frequency counter
* 25 ps single-shot time resolution
* 11-digit frequency resolution (1 s)
* Statistical analysis & Allan variance
* Graphical output to XY scopes
* Hardcopy to printers and plotters
* GPIB and RS-232 interfaces
http:// /products/SR620.htm for more info.
This unit is in excellent condition and appears to work perfectly with no issues from what I can tell.I am no expert on these units and cannot test them fully, therefore It is guaranteed to work as described (passing self tests and selfcal and basic things working without a problem) upon reciept or your money back within 7 days.
it starts up with no errors every time.passes self tests every time. I powered it up maybe 10 times and it passed perfectly each time. fan comes on when it warms up.
all buttons, functions,and leds work with no noticeable issues . super clean.
it also has a self calibration option which keeps you from having to send it in to be calibrated. and it runs self cal perfect every time with no errors.
For test equipment I am the largest used Stanford Research Systems dealer in the world. I am also known for my HP / Agilent spectrum analyzer and function generator sales as well.
Because I deal exclusively with these products above, I know all the ins and outs to making each instrument in peak condition upon arrival. For the musical instruments, I am a professional luthier who is an expert at warwick, modulus, zeta, yamaha , muramatsu,and parker.I do all the electronics work like changing potentiometers, jacks, etc...I file and adjust nuts, do fretwork such as filing and polishing, clean every instrument thoroughly , restring, intonate to perfection, tighten/loosen truss rod, choose best string size and type for each model, sometimes I send in the gear to the dealer to have professional repairs such as neck heat treatments , crack filling,preamp replacements,etc... .I will never sell an instrument that has a major issue without blatantly stating it in the listing.The dealers of these companies should thank me because quite often these instruments come in in bad shape and I make these companies look good by recycling these products back on the street in superb condition.
For test equipment I am very knowledgeable with SRS and HP agilent equipment : pricing , testing,reconditioning, and fixing basic issues. Every price that is listed is a price that the same unit sold for before at least a few times. I am not like the other dealers who list for rediculous prices that no one has ever bought it for in hopes they can make themselves rich. All my prices for musical instruments and sci elec test instruments are fair going rate prices.
Please feel free to email me any questions as I will respond immediately!
Most items look much better in person.
Pickup is completely fine as well> I am located 30 minutes from L.A. California and am in Pomona CA.



Stanford research SR620 time intrval frequency counter