Re: 2445 “A” sweep Issue
On Tue, Sep 8, 2020 at 9:59 PM <firstname.lastname@example.org> wrote:
I am having issues with a 2445 Oscilloscope that is not showing the A
This is a base 2445 as opposed to 2445A or 2445B?
The “B” sweep appears when the B delayed time base is used. The readoutYou may need to post a picture of what you're seeing on the CRT, and don't
forget to show the front panel control settings. You'll need to create a
new album in photos (https://groups.io/g/TekScopes/photos) and please link
the new album from your post.
Depending on how this is manifesting, it could be that the dots are
signifying that the scope has lost calibration. Does it go through power up
self-tests at power-up, or do you need to press a button before you get to
As the “B” sweep and readout appears however this seems to imply that the
If you get a readouts and/or a sweep, that'd indicate your
horizontal/vertical output hybrids are working.
I am not sure is there could be a failure mode of the horizontal outputYou've verified that triggering works? More likely than an output hybrid
would be a trigger or some kind of a control problem.
I have swapped the “A” and “B” sweep hybrids which did not resolve the