Re: [time-nuts] SR620 question
Simply pasting the link did not work, but it was close enough :-) The links that include an IP address (like 81.226.54.139 below) only work until midnight EST, then they are cleared. It is easy enough (but not necessarily intuitive) to go to the manuals page and search again for the document. I am trying to come up with a scheme that will create a permanent link. Bear with me a little longer... Didier KO4BB On January 28, 2015 7:41:59 AM CST, Gerhard Hoffmann dk...@arcor.de wrote: Am 28.01.2015 um 00:23 schrieb Magnus Danielson: It locks it up with a PLL. See page 9 in PDF below, smack in the middle is the input circuit and PLL. This page also gives you all the hints of how to wire in a better oscillator if you wish. 2 I have seen that the manual has a parts list and references the circuit diagrams, but they are not included in the pdf. Are the circuits somewhere out there? http://www.ko4bb.com/manuals/81.226.54.139/SR620_Universal_Time_Interval_Counter_Schematics.pdf Simply pasting the link did not work, but it was close enough :-) Thanks, also to Charles! After Bob's comment, I have ordered it with the oven. Should be here in .de in a good week. My 5370A has become so unreliable that it needs replacement. What issues do you see? Erratic blinking of the display, probably column drivers, but not only, bad switches that seem to stick now then.. For some time, it was enough to remove and re-insert the boards, but no more. I don't have the time now to look deeply into it. All would not be lost. It has a nice 10811. regards, Gerhard ___ 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. -- Sent from my Motorola Droid Razr HD 4G LTE wireless tracker while I do other things. ___ 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.
Re: [time-nuts] SR620 question
Gerhard, On 01/27/2015 09:00 PM, Gerhard Hoffmann wrote: Hi, fellow time nuts, I have some questions regarding the Stanford SR620: 1. Is it a drawback wrt ADEV when a SR620 does not have have the opt. oven if I have an ultra clean external reference? Does it use the external ref directly or does it just pull the own reference to the external value in the long run, no matter if it's the good or the bad oscilator? It locks it up with a PLL. See page 9 in PDF below, smack in the middle is the input circuit and PLL. This page also gives you all the hints of how to wire in a better oscillator if you wish. 2 I have seen that the manual has a parts list and references the circuit diagrams, but they are not included in the pdf. Are the circuits somewhere out there? http://www.ko4bb.com/manuals/81.226.54.139/SR620_Universal_Time_Interval_Counter_Schematics.pdf My 5370A has become so unreliable that it needs replacement. What issues do you see? Cheers, Magnus ___ 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.
Re: [time-nuts] SR620 question
Gerhard wrote: 1. Is it a drawback wrt ADEV when a SR620 does not have have the opt. oven if I have an ultra clean external reference? Does it use the external ref directly or does it just pull the own reference to the external value in the long run, no matter if it's the good or the bad oscilator? The SR620 phase locks its internal oscillator (either the standard TCXO or the optional OCXO) to the external oscillator if the external reference is selected. 2 I have seen that the manual has a parts list and references the circuit diagrams, but they are not included in the pdf. Are the circuits somewhere out there? http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/Stanford_Research_Systems/SRS_SR620_schematics.pdf If you go to http://www.ko4bb.com/manuals/ and search for SR620, you will find manuals from 1999, 2004, and 2006, as well. Best regards, Charles ___ 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.
Re: [time-nuts] SR620 question
Am 28.01.2015 um 00:23 schrieb Magnus Danielson: It locks it up with a PLL. See page 9 in PDF below, smack in the middle is the input circuit and PLL. This page also gives you all the hints of how to wire in a better oscillator if you wish. 2 I have seen that the manual has a parts list and references the circuit diagrams, but they are not included in the pdf. Are the circuits somewhere out there? http://www.ko4bb.com/manuals/81.226.54.139/SR620_Universal_Time_Interval_Counter_Schematics.pdf Simply pasting the link did not work, but it was close enough :-) Thanks, also to Charles! After Bob's comment, I have ordered it with the oven. Should be here in .de in a good week. My 5370A has become so unreliable that it needs replacement. What issues do you see? Erratic blinking of the display, probably column drivers, but not only, bad switches that seem to stick now then.. For some time, it was enough to remove and re-insert the boards, but no more. I don't have the time now to look deeply into it. All would not be lost. It has a nice 10811. regards, Gerhard ___ 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] SR620 question
Hi, fellow time nuts, I have some questions regarding the Stanford SR620: 1. Is it a drawback wrt ADEV when a SR620 does not have have the opt. oven if I have an ultra clean external reference? Does it use the external ref directly or does it just pull the own reference to the external value in the long run, no matter if it's the good or the bad oscilator? 2 I have seen that the manual has a parts list and references the circuit diagrams, but they are not included in the pdf. Are the circuits somewhere out there? My 5370A has become so unreliable that it needs replacement. regards, Gerhard ___ 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.
