Hi
> On Oct 17, 2017, at 12:37 AM, Hal Murray wrote:
>
>
> kb...@n1k.org said:
>> The gotcha is that the spur spec’s are not always met. As you might guess,
>> doing testing over really wide DDS ranges is impractical. Some designs use
>> cleanup loops. The gotcha then becomes a spur (say at 0.
On 10/16/17 9:37 PM, Hal Murray wrote:
kb...@n1k.org said:
The gotcha is that the spur spec’s are not always met. As you might guess,
doing testing over really wide DDS ranges is impractical. Some designs use
cleanup loops. The gotcha then becomes a spur (say at 0.053 Hz) that is
inside the
kb...@n1k.org said:
> The gotcha is that the spur specâs are not always met. As you might guess,
> doing testing over really wide DDS ranges is impractical. Some designs use
> cleanup loops. The gotcha then becomes a spur (say at 0.053 Hz) that is
> inside the cleanup loop bandwidth â¦.
How
Hi
> On Oct 15, 2017, at 12:47 PM, Hal Murray wrote:
>
>
> kb...@n1k.org said:
>> Today DDS based loops let manufacturers use a *lot* more cells than they
>> could use “back in the old days”.
>
> I'd expect that to produce close in spurs that would be ugly in some
> applications.
>
> Is tha
kb...@n1k.org said:
> Today DDS based loops let manufacturers use a *lot* more cells than they
> could use âback in the old daysâ.
I'd expect that to produce close in spurs that would be ugly in some
applications.
Is that info in the data sheet and/or are designers clued in?
--
These are
ency standards are primary standards. /tvb - Original Message - From:
"Jar Sun via time-nuts" To: Sent:
Saturday, October 07, 2017 8:27 PM Subject: [time-nuts] Question about SA.33 Rb clock Dear group: I
have got a SA.33 Rb module from a second hand GPS clock, at first it works well, but
more accurate, but this is not
>> the case. None of these compact low-power laser / VCSEL / CPT -based
>> frequency standards are primary standards. /tvb - Original Message -
>> From: "Jar Sun via time-nuts" To:
>> Sent: Saturday, October 07, 2017 8:
one of these compact low-power laser /
VCSEL / CPT -based frequency standards are primary standards. /tvb - Original Message - From:
"Jar Sun via time-nuts" To: Sent:
Saturday, October 07, 2017 8:27 PM Subject: [time-nuts] Question about SA.33 Rb clock Dear group: I
have got a S
the case.
None of these compact low-power laser / VCSEL / CPT -based frequency standards
are primary standards. /tvb - Original Message - From: "Jar Sun via
time-nuts" To: Sent: Saturday,
October 07, 2017 8:27 PM Subject: [time-nuts] Question about SA.33 Rb clock
Dear
Hi,
On 10/12/2017 06:06 PM, Tom Van Baak wrote:
Your use of the phrase "real cesium" may be the source of your confusion. The
SA.3x uses rubidium and the SA.4x uses cesium. They are all real atoms. These modern MAC
/ CSAC atomic standards compete with high-end DOCXO quartz oscillators with res
07, 2017 8:27 PM
Subject: [time-nuts] Question about SA.33 Rb clock
Dear group: I have got a SA.33 Rb module from a second hand GPS clock, at first
it works well, but soon after it was damaged that beacuse I was trying to
install a heat sink on it, unfortunately I used screws which its size too lo
Dear group: I have got a SA.33 Rb module from a second hand GPS clock, at
first it works well, but soon after it was damaged that beacuse I was trying to
install a heat sink on it, unfortunately I used screws which its size too long,
so maybe the screws drilled into inside Rb lamp or inside ci
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