Just got my fe5680 yesterday. Seems to work but the fe5680 is the most accurate reference I have. So how to test it? I plan to buy a Thunderbolt but until then, anyone have any creative ideas?
I have an HP5328A with unknown calibration. It reads 10,000,026 Hz I have an FCC 1 kit I assembled a few years ago and it says 9,999,993 Hz. (I can make the FCC1 read exactly 10MHz if I place it on top of the hot FE5680, the FCC1 is very temperature sensitive. My old Tek scope says the period is "about" 0.1 uS and the sine wave looks pretty good. BTW, 5 VDC is 76.5 mA with RS232 not connected. 15 VDC is 1.5 ~ 0.8 A. The unit does get warm. A 3/16 x 5 x 16 inch aluminum plate worked is a "good enough" heat sink. Going to have to get a Thunderbolt. I have an Oncore UT+ the provides a good pulse per second but that will not help Chris Albertson Redondo Beach, California _______________________________________________ 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.
