Waveform is similar to that produced by an inductive input low pass filter with
all but the first section inoperative when driven by a square wave input.
Bruce
On Saturday, January 30, 2016 09:33:45 AM Bob Camp wrote:
> Hi
>
> Unless it’s a really weird termination impedance, it’s broke. The
Looks like the output of a simple single ended emitter follower
that isn't being loaded properly.
Try again, but this time with a 50 ohms load.
-Chuck Harris
Logan Cummings wrote:
Hi All,
Curious what could give this waveform (attached) - I presume this is
not correct output for this
Hi
Unless it’s a really weird termination impedance, it’s broke. The SMA is a
pretty
good indication that it *should* work into a 50 ohm load.
The only other possibility is that your probe is taking the load far enough off
of 50 ohms
to mis-tune the output filter. I’d set the scope to 50 ohm
Hi Logan,
My guess is there is some second or third harmonic energy present. I
have observed the very same thing on another oscillator. Look at it
with a spectrum analyzer and see what kind of harmonic energy is there.
BillWB6BNQ
Logan Cummings wrote:
Hi All,
Curious what
Hi All,
Curious what could give this waveform (attached) - I presume this is
not correct output for this oscillator (surplus/salvage from Harris
Constellation receiver).
Frequency looks OK with +2V EFC but output looks like neither sine nor
any CMOS I've seen into 10Mohm (first
