[time-nuts] Lucent KS-24361 10 Mhz out success.
paulswedb at gmail.com
Wed Dec 3 20:40:43 EST 2014
On the output of the crystal oscillator you will want to buffer it and then
do whatever you like. Its a sine wave and as I recall of fair level several
volts. I did see a bit of distortion on the sine wave. It can be obtained
at J8 the unpopulated jack.
Now back to putting it in its case.
On Wed, Dec 3, 2014 at 7:33 PM, Gerhard Hoffmann <dk4xp at arcor.de> wrote:
> Am 04.12.2014 um 00:04 schrieb paul swed:
>> Have successfully tapped into the clean 10 MHz of the the Lucent and using
>> a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
>> spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
>> don't see anything down to at least 65 db. Thats the best detail the HP
>> 8568B will allow.
> Can't help to ask some questions:
> The MTI-260, is that a CMOS level or a sine output version on 5 MHz?
> Where I'm right now, I have the Lucent pair, one of them dismantled,
> but no power supply & no scope, that has to wait until the weekend.
> I'd like to make a small board that directly takes the 5 MHz from the
> Osc, buffers it, doubles it with the NIST FET doubler and provides 4 SMA
> +12dBm outputs at 10 MHz via 4*AD8009 or LMH6702.
> There is enough free space on the front plate.
> I'd like to hear that the osc delivers a sine, since that makes
> doubling easier.
> BTW I have another 10 MHz MTI-260 and did measure phase noise with
> an E5052B. That was not so funny. Probably it's orientiented towards
> long term stability at the cost of noise with absolutely minimum crystal
> dissipation. I'd like to repeat the measurement under better controlled
> environmental conditions b4 I tell numbers.
> But it seems that Morion rulez, noise-wise.
> regards, Gerhard
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