[time-nuts] MC100LVEL34

2014-02-05 Thread John Pease
y lock servo. You can get about 5 dBm out of PECL after the transformer and LPF!! Cheers, John Pease ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

[time-nuts] Fun employment for an EE/ time nut

2013-09-23 Thread John Pease
would like to hire locally, but will relocate an outstanding engineer. Please review the job description and send your resume to me at jpe...@aosense.com  if  you have the outstanding skill set we need. Thank you, John Pease Director of EE AOSense Inc. jpe...@aosense.com JOB DESCRIPTION

[time-nuts] laser locking

2013-04-28 Thread John Pease
e. Attila Kinali   Attila,   Google "Pound Drever Hall Locking"   This is what we use to generate our laser references for Rb and Cs.   John Pease   ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo

[time-nuts] Messy benches

2012-09-30 Thread John Pease
Don Latham's law of horizontal surfaces states "Any bare horizontal surface immediately becomes covered with junk."   I would offer a more general law:   A N dimensional surface tends to attrack N+1 dimensional objects to the saturation limit. ___ time

Re: [time-nuts] Using a 5202 lock-in amplifier

2011-08-30 Thread John Pease
The 5202 down converts by switching the LO on and off at a rate that is dependent on the input frequency. This on/off rate becomes the IF frequency. It is sort of like fractional N but worse. There is no image rejection. Some mixers and DDS's will clean its clock.   John

[time-nuts] RE - 53132A slow update

2011-06-30 Thread John Pease
  Bob,   Thanks for the information.  Everything else about this counter is perfect so I can live with hitting the run button.   John     The 53132 and 53131 behave oddly when the frequency is dropped. Apparently they do some sort of pre-scaling thing in their firmware. When you drop frequency 10

Re: [time-nuts] 53132A counter slow frequency update

2011-06-29 Thread John Pease
frequency because its interleaves counting edges and would be thrown off if the new edge rate was much slower.   The fact that your counter works as expected casts doubt on this possibility.     Any suggestions will be greatly appreciated.   John Pease         Check your cable, or better yet, look at the

Re: [time-nuts] 53132A counter slow frequency update

2011-06-28 Thread John Pease
>Do you have the autotrigger (or whatever it is called) engaged? >That will slow things down if it is hunting for the zero crossing. >Rick   Hi Rick,   I turned that off and used a manually set threshold, but it didn't matter.   Some additional information:   Firmware version 3646.   When I change

[time-nuts] 53132A counter slow frequency update

2011-06-28 Thread John Pease
is 10 times faster with 0.1 s gate time.   Is this behavior typical for this counter?   Thank you   John Pease ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the