On Mon, Dec 8, 2014 at 11:07 AM, Byron Hayes Jr <bha...@earthlink.net> wrote:
> So, I brought out "Big Gonzo", a HP 5335A counter with Option 010 > (Hi-Stability time base) I purchased on eBay about six months ago but had > never fired up. It came up OK and I hooked it to the LTE-Lite output. It > initially read 10000028, but I gave it a couple of hours to warm up the > oscillator oven and stabilize. By then, the reading had settled to 10 000 > 000. Now I switched cables and hooked the Rb to the 5335A, and it read 10 > 000 000. I hooked the LTE-Lite to channel A of the 5335A and the Rb to > channel B of the 5335A, and set the counter to "ratio". When it settled, > the counter read 1.000 000 indicating that the two outputs were the same > frequency, at least to six decimals. Apparently the 5335A is "right on". You can get another couple of digits for frequency out of the 5335A by setting the gate longer... I use about 2 o'clock on the Gate Adj. pot. My 5335A is now reading 9 999 999.96 for both LTE Lite and Trimble Thunderbolt. It must be coming on 4 years since Joe/KN5U adjusted the OCXO in the 5335A, so its drift seems well within spec. Orin. _______________________________________________ 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.