Hi all, recently I bought a TAPR TICC as a learning project, and also
bought two TADD-2 Minis to serve as sine-to-square converters for the
two inputs. Since the TADD-2 Minis will be dedicated for this purpose, I
simplified their assembly by just installing a jumper from pin 2 to 3 of
the IC socket position, installed the BNC input and output connectors,
and +12vdc power wiring. (I.e. I omitted the PIC chip, its socket and
the other headers.)
As a test, I sent the 10 MHz out from my Trimble Thunderbolt through one
TADD-2 Mini and to a Siglent digital scope. A screen shot from the scope
is attached.
I have two questions at this point:
1) Does this look like a decent waveform for TICC purposes? I verified
in advance with the scope that the Thunderbolt is putting out a clean
sine wave.
2) For this test, I just used 50-ohm coax between the Thunderbolt and
the TADD-2 Mini, and between the latter and the scope. I see the TADD-2
Mini instructions suggest avoiding a 50-ohm load, instead terminating
into a TTL or high-impedance load. Is there a recommendation for the
best cabling to use to connect the TADD-2 Minis to the TICC?
Thanks for any advice,
Frank
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
