[time-nuts] Trimble Thunderbolt EOL
Didier Juges
didier at cox.net
Mon May 19 07:27:56 EDT 2008
Phil,
The T-E datasheet lists timing accuracy at +/-15nS (1 sigma), where did you
get the spec that says 20?
Also, the antenna connector on the T-E is a BNC, the old T has an F
connector.
Didier KO4BB
> -----Original Message-----
> From: time-nuts-bounces at febo.com
> [mailto:time-nuts-bounces at febo.com] On Behalf Of phil
> Sent: Monday, May 19, 2008 4:00 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Trimble Thunderbolt EOL
>
>
> ----- Original Message -----
> From: <d.seiter at comcast.net>
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>; <time-nuts at febo.com>
> Sent: Monday, May 19, 2008 3:49 AM
> Subject: Re: [time-nuts] Trimble Thunderbolt EOL
>
>
> > While the mini-T is obviously not the same, the -E version
> many be nothing
> > more than a RoHS compliant version of the original. I've seen many
> > changes to devices/assemblies in the past year or two, but
> when the smoke
> > clears it's nothing but a RoHS-related change. In fact, in
> many cases,
> > there is no actual change in the device at all. It was
> always compliant
> > but marketing wanted a *RoHS* part number.
> >
> > It's been driving me crazy...
> >
> > -Dave
> > -------------- Original message ----------------------
> > From: "Richard W. Solomon" <w1ksz at earthlink.net>
> >> It seems the T-Bolt is being replaced with a newer
> version. I wonder
> >> which ones we will be getting ??
> >>
> >>
> http://trl.trimble.com/docushare/dsweb/Get/Document-383748/TBo
> lt%20EOL.pdf
> >>
> >>
> >> 73, Dick, W1KSZ
>
> Dave,
> They are getting the old version. Among the older units the
> only difference
> is firmware revisions. They are getting the "board only"
> version that
> requires +12, -12 +5 volts, not the 24 volt version you see
> on the larger
> Trimble photo of the complete unit.
>
> Apparently the "E" is an altogether different unit. Notice
> the antenna
> connection is lower than the other connectors. I would bet
> the newer unit
> has a stand-alone receiver in it. Also note it receives 12 satellites
> compared to 8 on the older version. Most other specs are
> about the same,
> performance wise.
>
> The old units have the receiver/timebase and associated
> electronics on a
> single board, all the coax terminals are in a line. The
> lower half of the
> unit in the Trimble photo has a 24 volt DC to +12, -12, +5
> volt converter.
>
> The "group" purchased the older version of the "board only"
> in a separate
> smaller case. It requires +12, -12 +5 volt of which they have
> located a
> separate power supply for.
>
> ==============================================================
> Trimble Thunderbolt ET GPS Discipline Clock Performance Specifications
>
> General: L1 frequency, CA/code (SPS) 12-channel continuous
> tracking receiver
> Update rate: 1 Hz
> 1 PPS accuracy UTC 20 nanoseconds (one sigma)
> 10 MHz accuracy 1.16 x 10 -12 one average)
> 10 MHz stability See graph on Trimble data sheet
> Harmonic level -40 dBc max
> Spurious -70 dBc max
> Phase noise: 10 Hz -120 dBc/Hz
> 100 Hz -135 dBc/Hz
> 1 kHz -135 dBc/Hz
> 10 kHz -145 dBc/Hz
> 100 kHz -145 dBc/Hz
> Holdover ±1 microsecond over 2 hours with a maximum ±15°C
> temperature change
> ==============================================================
> Trimble Thunderbolt OLD Version
>
> Performance Specifications:
> General: L1 frequency, CA/ code (SPS), 8-channel,
> continuous tracking
> receiver
> Update rate: 1 Hz
> PPS accuracy: UTC 20 nanoseconds (one sigma)
> 10 MHz accuracy: 1.16 x 10E-12 (one day average)
> Interface Specifications:
> Prime Power: +24V and return using DC to DC power supply (19V-34V)
> Board uses +12V, -12V, +5V and GND
> Power consumption 15 watts (cold), 10 watts steady state
> Serial Interface: RS-232 through a DB-9 connector
> Serial protocoll: Trimble Standard Interface Protocol (TSIP) binary
> protocol
> at 9600, 8-None-1
>
> ================================================================
> Newer "E" Version Data Sheet:
> http://trl.trimble.com/docushare/dsweb/Get/Document-383329/022
> 542-010B_Thunderbolt-E_DS_0807.pdf
>
> Newer "E" Version Manual:
> http://trl.trimble.com/docushare/dsweb/Get/Document-388613/Thu
> nderboltE_UG_1B.pdf
>
> Older Version Data Sheet:
> http://trl.trimble.com/docushare/dsweb/Get/Document-10015/
>
> Older Version Manual:
> http://trl.trimble.com/docushare/dsweb/Get/Document-10001/Thun
> derBoltBook2003.pdf
>
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
> Internal Virus Database is out-of-date.
> Checked by AVG.
> Version: 7.5.519 / Virus Database: 269.23.11/1422 - Release
> Date: 5/8/2008 5:24 PM
>
>
Internal Virus Database is out-of-date.
Checked by AVG.
Version: 7.5.519 / Virus Database: 269.23.11/1422 - Release Date: 5/8/2008
5:24 PM
More information about the time-nuts
mailing list