Re: [time-nuts] SR620 VCTCXO replacement
unfortunately, the XO supply is limited to 100 mA. that's an awesome find though. I just snagged one. -Eric On Thu, Oct 25, 2012 at 12:59 PM, cdel...@juno.com wrote: Hi, Check this one out! I think it might work as long as the +5 volts can source the oven current required. Your part was 20ma. This one requires About 250 ma during warmup and between 80 and 130ma afterwards. http://www.ebay.com/itm/310380778466?ssPageName=STRK:MEWNX:IT_trksid=p39 84.m1439.l2649 Corby Woman is 53 But Looks 25 Mom reveals 1 simple wrinkle trick that has angered doctors... http://thirdpartyoffers.juno.com/TGL3141/50899a8421dd41a8434a7st01duc ___ 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. -- --Eric _ Eric Garner ___ 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 VCTCXO replacement
I have an SR620 that I was preparing to sell. It's been clocked by an external 10 Mhz source for the whole time I've owned it so I wanted to verify that the internal VCTCXO was still up to snuff. after CALing the internal reference I set it up to monitor the output from my Tbolt and it started drifting. the drift was bad enough that I started to investigate. The internal reference was wandering around by as much as 60 Hz over the course of 10 min. monitoring the EFC voltage at R343 indicated that there was not so much as a mV change during that time. this has led me to the conclusion that the XO on the board is suspect. The MtronPTI K1601TE that's on the board is EOL and the replacements don't seem to be stocked at any of the disti's listed on Mtron's website that I've checked so far. I've not started the search for , Does anyone have any suggestions for replacements? --Eric _ Eric Garner ___ 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 VCTCXO replacement
Hi Chances of finding that in distribution are near zero. Best approach is to find a part with the same pin out / frequency / supply / EFC / stability on an auction site. Since it's a 5V / 14 pin DIP that should be possible. Another simple fix would be a distributor stock miniature VCTCXO and a small carrier board. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Eric Garner Sent: Thursday, October 25, 2012 11:36 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] SR620 VCTCXO replacement I have an SR620 that I was preparing to sell. It's been clocked by an external 10 Mhz source for the whole time I've owned it so I wanted to verify that the internal VCTCXO was still up to snuff. after CALing the internal reference I set it up to monitor the output from my Tbolt and it started drifting. the drift was bad enough that I started to investigate. The internal reference was wandering around by as much as 60 Hz over the course of 10 min. monitoring the EFC voltage at R343 indicated that there was not so much as a mV change during that time. this has led me to the conclusion that the XO on the board is suspect. The MtronPTI K1601TE that's on the board is EOL and the replacements don't seem to be stocked at any of the disti's listed on Mtron's website that I've checked so far. I've not started the search for , Does anyone have any suggestions for replacements? --Eric _ Eric Garner ___ 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 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 VCTCXO replacement
K1602TE (note the different part number) oscillators have been sold on ebay in the past. Keep an eye out there in case more appear. You could also contact the people who sold them and see if they have one or two more lurking in the corners. Other than that, it's just a TCXO that uses the same pinout as all the others. Match the specs ( or maybe a better one is available today ) and drop it in. Ed On 10/25/2012 9:36 AM, Eric Garner wrote: I have an SR620 that I was preparing to sell. It's been clocked by an external 10 Mhz source for the whole time I've owned it so I wanted to verify that the internal VCTCXO was still up to snuff. after CALing the internal reference I set it up to monitor the output from my Tbolt and it started drifting. the drift was bad enough that I started to investigate. The internal reference was wandering around by as much as 60 Hz over the course of 10 min. monitoring the EFC voltage at R343 indicated that there was not so much as a mV change during that time. this has led me to the conclusion that the XO on the board is suspect. The MtronPTI K1601TE that's on the board is EOL and the replacements don't seem to be stocked at any of the disti's listed on Mtron's website that I've checked so far. I've not started the search for , Does anyone have any suggestions for replacements? --Eric _ Eric Garner ___ 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 VCTCXO replacement
Hi, Check this one out! I think it might work as long as the +5 volts can source the oven current required. Your part was 20ma. This one requires About 250 ma during warmup and between 80 and 130ma afterwards. http://www.ebay.com/itm/310380778466?ssPageName=STRK:MEWNX:IT_trksid=p39 84.m1439.l2649 Corby Woman is 53 But Looks 25 Mom reveals 1 simple wrinkle trick that has angered doctors... http://thirdpartyoffers.juno.com/TGL3141/50899a8421dd41a8434a7st01duc ___ 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 VCTCXO replacement
Oh my, that looks like a good deal. I'll have to order a few. Regards, Tom - Original Message - From: cdel...@juno.com To: time-nuts@febo.com Sent: Thursday, October 25, 2012 3:59 PM Subject: [time-nuts] SR620 VCTCXO replacement Hi, Check this one out! I think it might work as long as the +5 volts can source the oven current required. Your part was 20ma. This one requires About 250 ma during warmup and between 80 and 130ma afterwards. http://www.ebay.com/itm/310380778466?ssPageName=STRK:MEWNX:IT_trksid=p39 84.m1439.l2649 Corby ___ 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.
