[time-nuts] TAPR "TADD-2 Mini" PPS Divider Now Available
John Ackermann N8UR
jra at febo.com
Sun Mar 25 18:20:14 UTC 2012
We are happy* to announce that TAPR is now accepting orders for the
TADD-2 Mini (or T2-Mini) pulse-per-second ("PPS") frequency divider:
http://www.tapr.org/kits_t2-mini.html.
The T2-Mini is a tiny (0.75 x 2.0 inch) board that accepts a 1, 2.5, 5,
or 10 MHz input and uses a PIC chip running open source firmware to
divide it to a PPS signal. Changing the firmware can allow applications
such as 32.768 kHz output to drive clock chips.
Why do you need a PPS divider? If you want to measure the
characteristics of an oscillator, PPS comparisons can be much more
precise than a typical frequency counter and can be done with simple
equipment. Dividing your oscillator to a PPS signal allows easy direct
comparison against GPS. Every time-nut needs one (or several...)
The T2-Mini uses surface mount parts tightly jammed on a very small
board. TAPR offers three versions, each with all SMT parts installed:
* Board alone for $44 ($39 for TAPR members)
* Board with programmed PIC chip, connectors, and other required parts
for $55 ($49 for TAPR members)
* Assembled and power-tested version for a price still to be finalized,
but probably about $79. If you're interested, please contact TAPR via
https://tapr.org/inforequest.php
We are taking orders for the basic and connector-kit versions now, with
shipment expected in about three weeks.
For more information, or to order, go to
http://www.tapr.org/kits_t2-mini.html. A preliminary version of the
product manual is at http://www.tapr.org/~n8ur/T2_Mini_Manual.pdf
John
* You don't know *how* happy -- T2-Mini design started three years ago,
but it's amazing how life can get in the way of the fun stuff...
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