[time-nuts] Datum 1000B

Does anyone have any nuts and bolts (disassembly?) experience they can share regarding fixing a Datum 1000B pn 05818-115 (4x10MHz) which has a manual frequency pot and which will not adjust to 10,000,000.000 MHz? It will actually go as low as “10,000,000.2890”, but no lower. (The unit does

[time-nuts] Datum 1000B troubleshooting

Hi all, I'm still relatively new in this area but I'm trying to troubleshoot an issue with a Datum 1000B I picked up last year. This unit is the 10MHz flavor with 4 outputs. Its issues, I believe, is after 24 hours of warm-up, the oscillator: - ...has a flat-out dead output for one of the

Re: [time-nuts] Datum 1000B OXCO

After several dissemble assemble cycles the oven heater started working, it is very slow reaching a stable frequency, about 12 hours. So maybe only one of the two transistors is working but this allows me to move on for now. The frequency was closer but I changed a 33 PF capacitor to about 20

Re: [time-nuts] Datum 1000B OXCO

After several dissemble assemble cycles the oven heater started working, it is very slow reaching a stable frequency, about 12 hours. So maybe only one of the two transistors is working but this allows me to move on for now. The frequency was closer but I changed a 33 PF capacitor to about 20

Re: [time-nuts] Datum 1000B OXCO

-nuts@febo.com Sent: Tuesday, January 20, 2009 11:20:28 AM Subject: RE: [time-nuts] Datum 1000B OXCO - Forwarded Message From: Stanley Reynolds stanley_reyno...@yahoo.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Monday, January 19, 2009 5:16:51

Re: [time-nuts] Datum 1000B OXCO

Hi, The data sheet for the 1000B is available on the Symmetricom website. The pinout is not given. Here is the pinout. 1- Electronics return 2- Control voltage in -10 to +10 VDC 3- Coarse tune in voltage 4- +12VDC reference out, coarse tune hot 5- Oven return 6- Oven monitor 7- +24VDC oven

Re: [time-nuts] Datum 1000B 10 MHz Oscillator pinouts for the DB-9connector?

- Original Message - From: Brooke Clarke [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tuesday, July 19, 2005 5:46 PM Subject: [time-nuts] Datum 1000B 10 MHz Oscillator pinouts for the DB-9connector? Hi: I'm working on selling my

Re: [time-nuts] Datum 1000B 10 MHz Oscillator pin outs for the DB-9connector?

, July 19, 2005 5:46 PM Subject: [time-nuts] Datum 1000B 10 MHz Oscillator pinouts for the DB-9connector? Hi: I'm working on selling my FTS4060/S24 that was broken by the shipper and would like to know the pin outs for the Datum 1000B 10 MHz crystal oscillator, since it's working

Re: [time-nuts] Datum 1000B 10 MHz Oscillator pin outs for the DB-9connector?

: Brooke Clarke To: Discussion of precise time and frequency measurement Sent: Tuesday, July 19, 2005 5:46 PM Subject: [time-nuts] Datum 1000B 10 MHz Oscillator pinouts for the DB-9connector? Hi: I'm working on selling my FTS4060/S24 that was broken by the shipper and would like to know

[time-nuts] Datum 1000B 10 MHz Oscillator pinouts for the DB-9 connector?

Hi: I'm working on selling my FTS4060/S24 that was broken by the shipper and would like to know the pin outs for the Datum 1000B 10 MHz crystal oscillator, since it's working. It's frequency can be controlled by using the manual scan control voltage increase/decrease toggle switch. Thanks,

Re: [time-nuts] Datum 1000B 10 MHz Oscillator pinouts for the DB-9 connector?

We had a thread about FTS-1200 a few weeks ago. The old FTS 1000 series includes the models 1000A, 1200, 1002A and 1003A. In case they preserved the pinout to the 1000B, you might try #1 GND, #2 EFC, #3,4 NC, #5 GND, #6 Oven monitor, #7 NC, #8 22-30VDC, #9 NC. -- Björn Brooke Clarke