I wonder if a Leo Bodnar pulse generator would work. IIRC, it can produce
pulses with 350 ps rise times.
DaveD
KC0WJN
On Fri, Jan 17, 2025 at 08:42 Sigur?ur ?sgeirsson via groups.io <siggi=
[email protected]> wrote:
Hey Keith,
I calibrated the CRT, timing, vertical and the triggers on my 2467 using a
TG501 and a PG506. I didn't touch the transient response calibration, but I
don't think the PG506 is fast enough for that. You need a much faster edge,
and IIRC Tek specifies a tunnel diode pulser.
I think if you have a decent signal generator or ARB, it should be able to
produce all the signals the calibration calls for^W^Wneeds. The horizontal
(timing) calibration is all done by eye, using the technician as a visual
comparator. TG501 is very convenient, as it gives you fairly narrow,
fast-rising pulses for timing marks and it's quick and easy to toggle to
the requested settings.
A square wave of the required frequency would work, though, even a sine at
a pinch. There'd be an awful lot of faffing about with controls, though :).
The vertical calibration is similar to the horizontal, e.g. the technician
is used to adjust levels until traces line up. IIRC you need a max of a 5V
peak to peak (ground to peak) signal for the vertical calibration, which is
easily done with a digital signal generator or an ARB that has 12bit
resolution or better. At the lower end it might be getting hairier, I don't
remember offhand what the signal levels are there, but to get good
resolution and low noise you might need to use attenuators, depending on
how your siggen/ARB works.
The trigger calibration is however automated, and is somewhat picky on the
signal provided, but again nothing you wouldn't be able to provide with an
ARB or a digital siggen.
Siggi
On Fri, Jan 17, 2025 at 7:00?AM Keith via groups.io <keith=
[email protected]> wrote:
Thanks Raymond, yes the fast edge rate is a problem, the 8112 is about
5nS
min.
However... I do have the Tek fast pulse PCB that is used in a PG506, I
believe that has < 1nS edges and could be driven by the 8112 to address
the
edge rate?
Also have access to a siglent SDG6052X which is a 500MHz function
generator.
