> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Behalf Of Dr Bruce Griffiths > Sent: Saturday, June 09, 2007 5:53 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] another Ebay mixup, 5370
> Internal crosstalk can cause the 5370 to appear to be much better than > specified. > The jitter will vary as you vary the length of the cable connecting the > external 10MHz output to the input. > If the input is attenuated (inadvertently by internal fault or > otherwise) the jitter will increase considerably with a sine wave input. That's a really good point, actually. Said, have you done an input sensitivity check? It's really common for the x1/x10 attenuator and other front-panel switches to be intermittent. It is not hard to take the front panel apart, disassemble the switches, and treat them with ProGold or a similar high-quality cleaner/lube. You may need to do that before the jitter values make sense. -- john, KE5FX _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
