> Regarding the Kit? is it a GPS Based Unit? From: Garren Davis <[EMAIL PROTECTED]> >Date: Fri Dec 23 11:35:19 CST 2005 >To: Discussion of precise time and frequency measurement <time-nuts@febo.com> >Subject: RE: [time-nuts] New TAPR "TADD" kit in the works -- are you >interested?
> >I would be interested in one of these kits. > >Garren > > >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On >Behalf Of John Ackermann N8UR >Sent: Thursday, December 22, 2005 2:27 PM >To: Discussion of precise time and frequency measurement; >[EMAIL PROTECTED]; tacgps@lists.tapr.org >Subject: [time-nuts] New TAPR "TADD" kit in the works -- are you >interested? > >The TAPR TADD-3 kit is just about ready to go into production, and I >have no idea how many people might be interested in one (you can tell >TAPR is full of engineers rather than marketers...). This email is to >get an idea of interest so we can judge how many kits to make up in the >initial run. > >The TADD-3 is a 1 pulse per second distribution system. It has two >inputs and eight outputs. Six of the outputs are low-Z TTL level >signals routed to BNC connectors, while two are RS-232 levels to drive a >serial port. Each output can be individually strapped to invert the >input signal, or leave it alone. (Note: while the TADD-3 is designed >primarily for PPS signals, there's no bandwidth limiting and it should >work with any pulse train up to at least several MHz.) > >Each input can be selected to drive either a 74AC14 Schmitt trigger (TTL >level) or an LT1016 high-speed comparator (with trigger point adjustable >from 0 to 5 volts). The LT1016 has less than 10ns delay, and initial >tests show jitter that's not much worse than driving the 74AC14 >directly; it's a good chip. The two signal inputs can be bridged so one >signal can drive all eight outputs. > >The form factor is the same as the TADD-1 RF distribution amplifier: a >4x6 inch board with the 6 output BNCs on one long side, and the two >input BNCs on the other. Provisions are made to stack multiple boards. > >We don't have a price set yet (it will depend in part on the volume we >do) but a very rough estimate is $60-$90 for the kit. > >We are also working on an enclosure that will work with this, and all >the other, TADD kits, but we don't have availability or pricing >information available yet. > >If you'd be interested in buying a TADD-3 kit, please contact me off the >list. I'm not looking for binding orders, just an idea of the interest >level so we choose an appropriate size for the first run. > >Thanks and happy holidays, > >John > >_______________________________________________ >time-nuts mailing list >time-nuts@febo.com >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > >_______________________________________________ >time-nuts mailing list >time-nuts@febo.com >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
