[time-nuts] Trimble Mini-T end of life

Mark Spencer mspencer12345 at yahoo.ca
Fri Jul 20 02:03:08 UTC 2012


Just wondering about the internal  3.3 volt antenna supply.   A switchable 3.3 or 5 volt supply would be nice.  Antennas such as the Symmetricom 58532A still want 5 volts.  Also if possible a waas only hold over mode would be nice (sorry I don't know if this is feasible or not.)

Sent from my iPad

On 2012-07-19, at 3:33 PM, SAIDJACK at aol.com wrote:

> Hi guys,
> 
> thanks so much for all the great suggestions on how to make this product  
> better!
> 
> Yes, cost targets are a very important goal here, and we are looking into  
> adding options that make sense for most customers and don't add excessive 
> cost  or delay to the schedule. We definitely will improve the performance of 
> the unit  over the original Mini-T though, because we feel that the Mini-T 
> had sub-par  performance on many fronts, and don't want to make the same 
> mistakes. Some of  the improvement items we have already decided upon are:
> 
> * 50 channels GPS with WAAS/EGNOS/MSAS and Position-Hold mode with  
> automatic initialization of the Auto-Survey process by default. Alternatively,  the 
> unit can be put into mobile mode, with Auto-Kalman filter  optimization 
> depending on vehicle velocity. -160dBm GPS tracking  capability
> 
> * A secondary 10MHz output (SMA or SMB connector, only the connector needs  
> to be stuffed onto the PCB) to have access to the +13dBm output  signal
> 
> * Internal +3.3V antenna supply, that is automatically over-driven by the  
> externally applied antenna supply
> 
> * USB connector for command/control, RS-232 option, and TTL serial port for 
> legacy compatibility
> 
> * RoHs 6/6 for compatibility, and RoHs 5/6 option for much longer life and  
> better MTBF than Mini-T
> 
> * more than 3x better thermal stability, and at the same time more than  
> double the temperature range (+/-5ppb over -40C to +85C versus +/-10ppb from  
> only 0C to +60C) standard, and DOCXO option for even higher thermal 
> stability  performance and low-g sensitivity/ruggedized crystal options.
> 
> * Better phase noise
> 
> * Status LED's on board
> 
> * TTL lock/ALARM indicator
> 
> * External 1PPS input option on unused pin 1 of the main connector
> 
> * Fully field-upgradable firmware, no FPGA programmer needed
> 
> * Support for NMEA and SCPI commands
> 
> * 3-axis accelerometer built-in
> 
> * lower height: 0.47 inches OCXO height versus 0.75 inches
> 
> * Much better ADEV performance
> 
> * Factory-testing for crystal-jumps on every unit
> 
> We also had several folks ask for alternative frequency outputs, and are  
> currently investigating if we could use the secondary 10MHz connector to add  
> another VCXO to generate any output frequency from 10MHz to 120+MHz such as 
> is  done on our ULN-1100 boards. This would add some cost though, and may 
> just end  up in a secondary version of the board so that customers who don't 
> need it won't  have to pay for it..
> 
> The most important item to get feedback on is the TSIP port, we cannot  
> implement the entire TSIP command set as this is quite complex, most customers  
> probably only use a handful of actual commands, and we believe the 
> SCPI/NMEA  command/control/status interface is much superior over the proprietary 
> binary  TSIP port.
> 
> We are however open to implement a couple of useful and common TSIP  
> outputs, and would greatly appreciate feedback and suggestions on this, for  
> example a minimum set to make Lady Heather work..?
> 
> Thanks,
> Said
> 
> 
> In a message dated 7/19/2012 13:41:07 Pacific Daylight Time, wb6bnq at cox.net 
> writes:
> 
> Hi  Said,
> 
> I know everyone is going to ask for the kitchen sink to be thrown  in.  
> BUT, how about
> just making a replacement that does exactly the  same job with no added 
> thrills ?
> That way your spending the least amount to  produce a product and keeps the 
> cost down
> to the customer which may cause  them to want to keep designing with that 
> particular
> product.
> 
> just  saying........
> 
> Bill....WB6BNQ
> 
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