[time-nuts] Upgrade HP 5065A oscillator from 105 to 10811

2022-02-11 Thread Matt Huszagh
Hello, Has anyone attempted or successfully upgraded an older HP 5065A to use a new 10811 oscillator? HP created an upgrade kit for this purpose and provided a manual with full schematics. While I would expect that upgrade kit is difficult (impossible?) to find I imagine it might be possible to

[time-nuts] Looking to purchase an HP 5065A

2022-02-09 Thread Matt Huszagh
Hello, I'm interested in purchasing a (preferably working) HP 5065A. I've kept my eyes out on Ebay for a unit but no luck so far. If anyone has one they'd be willing to part with please let me know! Matt ___ time-nuts mailing list --

[time-nuts] Re: Lowest noise (phase noise and ADEV) method to achieve 10 MHz signal from 5 MHz input

2021-11-30 Thread Matt Huszagh
Jürgen Appel writes: > Yes, this is a fundamental physical property which cannot be avoided. > > You can see it that way: If there is a given fluctuating time delay in your > otherwise perfect 5 MHz signal, the amount of phase shift this time > fluctuation corresponds to in a 10 MHz signal

[time-nuts] Lowest noise (phase noise and ADEV) method to achieve 10 MHz signal from 5 MHz input

2021-11-28 Thread Matt Huszagh
Hi, I've got a 10 MHz distribution amplifier and am considering purchasing a 5 MHz reference. Most (not all) of my equipment accepts a 5 MHz reference, but I'd like to be able to use the existing distribution amplifier I have if possible. Therefore, I'm considering ways I might generate a

[time-nuts] Re: FS740 Thoughts?

2021-11-17 Thread Matt Huszagh
"Poul-Henning Kamp" writes: > The PRS-10 switches the polarity of the C-field solenoid at 5Hz to > cancel out varying external magnetic fields. > > If that is not a concern for you, for instance because you use it > in a stationary application, it can be disabled with the "MS0" command. > > It's

[time-nuts] Re: FS740 Thoughts?

2021-11-17 Thread Matt Huszagh
Dana Whitlow writes: > But if you can stand the ADEV hump around 2 sec, the PRS-10 is delightful. > > BTW, the ordinary factory new PRS-10 does provide for direct locking to 1 > PPS, > but many of the available surplus units had that feature removed. Tne new > PRS-10's sold for years for $1595,

[time-nuts] Re: FS740 Thoughts?

2021-11-17 Thread Matt Huszagh
Bob kb8tq writes: > I have a 740 as do others on the list. The big gotcha is the OCXO in the > device. > It has various quirks that limit the performance of the device. The ADEV plot > they > show for the OCXO is a “sometimes / maybe / might” sort of thing. One of the > “get to it eventually”

[time-nuts] FS740 Thoughts?

2021-11-16 Thread Matt Huszagh
Hi, I'm curious to hear people's thoughts on the SRS FS740 (https://www.thinksrs.com/products/fs740.html) as a lab frequency standard. The phase noise performance of the OCXO and Rb options seem quite good (the same specs apparently apply during GPS disciplining too) | offset | TCXO |

[time-nuts] 10811-60120 (serial prefix 2023) Manual/Information

2021-07-31 Thread Matt Huszagh
Hello, I posted this on the HP-Agilent group https://groups.io/g/HP-Agilent-Keysight-equipment/topic/10811_serial_prefix_2023/84530740?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,0,0,84530740 but was redirected here. I'm debugging a faulty HP 8663A and am currently investigating the 10811A