Re: 577 D1 IV curve question


Hi DW,
It would help if you said what you thought was odd about the curves so we knew what we were looking for.
There is nothing wrong at all as far as I can tell other than the base steps are offset. To confirm this turn the silver 10 turn OFFSET pot. As you turn it the offset will change making the entire set of curves move up and down on the CRT.
The odd thing is the offset button does not appear to be in the "activated" position. Try pressing this push button. It may be stuck somehow in the active position.
Dennis Tillman W7pF

-----Original Message-----
From: [] On Behalf Of DW
Sent: Monday, November 16, 2020 7:26 AM
Subject: [TekScopes] 577 D1 IV curve question

Hello, I have a 577 D1 serial B030223 that appears to have developed a slight problem with displaying an IV curve,,,20,2,0,0

If you click on the link above notice the oddly displayed IV curve, I also included pictures of the instrument settings if that is questioned

Any one experience this issue before or have any thoughts, thanks

Dennis Tillman W7pF
TekScopes Moderator

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