In message
, Anders
Wallin writes:
>I will order a few prototype PCBs in a few weeks. In the meantime if anyone
>has comments/suggests on the schematic or PCB from previous experience with
>ADF4351, AD9912, or similar ICs then please let me know.
I have played with this one:
h
There is now a first draft of the 'DDS-board', a 4-layer 100mm x 100mm PCB
with an ADF4351 PLL+VCO, and two AD9912 DDSs over here:
https://ohwr.org/project/microstepper/wikis/2020-06-02-DDSboard-draft
(kicad sources in the repository at
https://ohwr.org/project/microstepper/tree/master/ddsboard)
I
Hi
Scope basics:
It is not unusual for a scope to have an input channel with a capacitance
of 10 to 20 pf. That does not sound like much but ….
A 10 MHz square wave has significant energy at 30, 50, 70, 90 MHz (and on up).
Unless a coax is terminated at all these frequencies they will be reflec
On 5/31/20 8:14 PM, Charles Steinmetz wrote:
Doing as you are now -- feeding the T2-Mini output through coax to the
input of your scope -- you will either need to switch the scope input
impedance from 1 Mohm to 50 ohms (if the scope has that feature --
sadly, many digiscopes do not), or use a 5
