No, it's just a board that takes 1pps in on one side, and delivers a bunch of replica 1pps output signals on the other. A typical use would be to route the 1pps signal from a GPS to multiple counters or computers.
John ---- Allan W. Bart, Jr. said the following on 12/23/2005 12:40 PM: > 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 > > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts