[time-nuts] Thunderbolt GPSDO

[Dave Brown]

Re the dc requirements for this-
 I suspect the -12 is only used for the RS232 interface and 25 mA 
(from the datasheet) seems on the high side for that? 10 mA sounds 
much more likely (as per the manual).
As well,  the manual figure of 750mA for the +12 seems more likely 
than the datasheet figure of 25 mA -although it's may be worst case. 
(oven startup?) The 300/400 mA figures for the +5 rail are both 
believeable, but again, 400 mA seems more likely.
Can anyone confirm/deny?

DaveB, NZ

----- Original Message ----- 
From: "Robert E. Martinson" <REMartinson at rcn.com>
To: "'Discussion of precise time and frequency measurement'" 
<time-nuts at febo.com>
Sent: Tuesday, February 13, 2007 7:06 AM
Subject: [time-nuts] Thunderbolt GPSDO


> I'm interested in one, but hopefully for less then $250. I can't 
> understand
> why the sole bidder started so high??  I suspect it's a shill bid??
>
> It appears it would be easy to use as the data sheet & manual are 
> available
> on-line.  This, unlike the RFTG units, which have no manufactures 
> (or
> Lucent) info available on-line (that I have been able to find).  I'm 
> still
> having problems getting My RFTG-m-XO to reliable GPS lock, but I'm 
> closer
> then I was a week ago.
>
> Side note: the power requirements appear to be incorrect in the data 
> sheet
> as it seems too low (2.1 W).  The numbers in the manual seem more 
> realistic
> (11.1 W).
>
> See: http://trl.trimble.com/docushare/dsweb/Get/Document-10015/ 
> sheet 2,
> and
> http://trl.trimble.com/docushare/dsweb/Get/Document-10001/ThunderBoltBook200
> 3.pdf  sheet 38 or page 3-4  .
>
> Regards,
> Bob Martinson, N1VQR
>
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