Empathy List Archives

J

jsternmd@att.net

Tue, Sep 26, 2023 8:59 PM

I see these Trimble mini-T Timing GPSDO bare boards now on Ebay for $69.

The last msg on the list server was back in 2007 noting the lack of
information on the datasheet. Has anyone evaluated their performance, e.g.,
compared to the Thunderbolts?

Jerry NY2KW

I see these Trimble mini-T Timing GPSDO bare boards now on Ebay for $69. The last msg on the list server was back in 2007 noting the lack of information on the datasheet. Has anyone evaluated their performance, e.g., compared to the Thunderbolts? Jerry NY2KW

KL

Keelan Lightfoot

Wed, Sep 27, 2023 6:44 AM

Jerry,

Comparing the datasheet of the Mini-T to the Thunderbolt-E, they appear to
have identical performance:

http://beefchicken.com/dump/Thunderbolt-E%20.pdf
http://beefchicken.com/dump/Mini-T.pdf

I imagine that like a lot of Trimble products, they're just a re-packaging
of the same components for different target markets.

It appears to be based on the same guts as the UCCM and the Resolution-T
(although the Resolution-T does not include an OCXO)... A TMS320 DSP, a
Trimble Colossus RF front end and a Xilinx FPGA that presumably handles the
oscillator disciplining (given that the FPGA does not appear on the
Resolution-T)

Keelan

On Tue, Sep 26, 2023 at 7:54 PM Jerry Stern via time-nuts <
time-nuts@lists.febo.com> wrote:

I see these Trimble mini-T Timing GPSDO bare boards now on Ebay for $69.

The last msg on the list server was back in 2007 noting the lack of
information on the datasheet. Has anyone evaluated their performance,
e.g.,
compared to the Thunderbolts?

Jerry NY2KW

time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe send an email to time-nuts-leave@lists.febo.com

Jerry, Comparing the datasheet of the Mini-T to the Thunderbolt-E, they appear to have identical performance: http://beefchicken.com/dump/Thunderbolt-E%20.pdf http://beefchicken.com/dump/Mini-T.pdf I imagine that like a lot of Trimble products, they're just a re-packaging of the same components for different target markets. It appears to be based on the same guts as the UCCM and the Resolution-T (although the Resolution-T does not include an OCXO)... A TMS320 DSP, a Trimble Colossus RF front end and a Xilinx FPGA that presumably handles the oscillator disciplining (given that the FPGA does not appear on the Resolution-T) - Keelan On Tue, Sep 26, 2023 at 7:54 PM Jerry Stern via time-nuts < time-nuts@lists.febo.com> wrote: > I see these Trimble mini-T Timing GPSDO bare boards now on Ebay for $69. > > > > The last msg on the list server was back in 2007 noting the lack of > information on the datasheet. Has anyone evaluated their performance, > e.g., > compared to the Thunderbolts? > > > > Jerry NY2KW > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com >

BC

Bob Camp

Wed, Sep 27, 2023 1:09 PM

Hi

The biggest gotcha with the various interactions of Trimble GPSDO’s is what you can or can’t fiddle
from the command line. The original TBolt is still king in this regard. The ability to optimize the control
loop with LH is what makes them stand out.

Bob

On Sep 26, 2023, at 4:59 PM, Jerry Stern via time-nuts time-nuts@lists.febo.com wrote:

I see these Trimble mini-T Timing GPSDO bare boards now on Ebay for $69.

The last msg on the list server was back in 2007 noting the lack of
information on the datasheet. Has anyone evaluated their performance, e.g.,
compared to the Thunderbolts?

Jerry NY2KW

time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe send an email to time-nuts-leave@lists.febo.com

Hi The biggest gotcha with the various interactions of Trimble GPSDO’s is what you can or can’t fiddle from the command line. The original TBolt is still king in this regard. The ability to optimize the control loop with LH is what makes them stand out. Bob > On Sep 26, 2023, at 4:59 PM, Jerry Stern via time-nuts <time-nuts@lists.febo.com> wrote: > > I see these Trimble mini-T Timing GPSDO bare boards now on Ebay for $69. > > > > The last msg on the list server was back in 2007 noting the lack of > information on the datasheet. Has anyone evaluated their performance, e.g., > compared to the Thunderbolts? > > > > Jerry NY2KW > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com