It shouldn't be going into holdover unless you are loosing the satellites. Where is your antenna mounted?
Since I last moved it, my Z3801A has been running continuously for about two weeks and has never gone into holdover. I sold my Cs unit recently, so I can't do a comparison like you are doing. ----- Original Message ----- From: "Magnus Danielson" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Sunday, July 23, 2006 5:55 PM Subject: [time-nuts] Z3801 lockin behaviour > Hi! > > I have powered up my Z3801A and monitored the 10 MHz on a counter (with > fancy > histogram and statistics) with the Cs as reference. The Z3801 is moving > around > quite a bit and the SatStat shows that it hasn't really converged towards > precission (the 24h time error prediction). Infact, it drops out of lock > into > holdover every now and then. When it jumps in or out of hold over, a > "large" > (50 mHz) frequency jump is clearly vissible. I have about 1 mHz of Allan > Deviation and about 4 in Standard Deviation. > > I have made comperative measurements of my counter setup by hooking it up > to my > Rb, and that is noticeably lower in noise. > > Is this to be expected or not? > > Any thoughts & recommendations? > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list > [email protected] > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
