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]; [email protected] 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 [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
