MarkL,
I got a chance to play with the scope some more this morning. I fed the output of a Boonton 103D signal generator (.125mhz to 175mhz) set at 10mhz to a T connector which went to two different oscilloscopes. The 2445B and my Kenwood CS-5170. I bought the CS-5170 new in about 1996 or so. So I have a high degree of confidence in its accuracy. I set the 2445B to 50 ohms coupling, and used a 50 ohm feed through termination on the CS-5170 and compared both displays. Both scopes read exactly the same (within a couple of decimal points) in both frequency and amplitude. These readings also agreed with the expected output of the signal generator. So it looks like at least for these simple tests that the scope is working as expected. One test down and many more to go.
malch,
I had seen that youtube clip, but had not watched all of it. Good general information on how to cal a scope.
So, using the info from post#252, I need a 1khz 50% duty cycle square wave signal at 20mv, 50mv, 0.1v, 0.2v, 0.5v, 1v, 10v. My CFG280 function generator has the ability to do all of that with the exception of the precision p-p voltages. For that, I can use my Amprobe AM-530 to measure the output voltages in RMS and multiply by 2 to get the actual p-p voltage. I believe my AM-530 will go that low. The spec sheet states the lowest range is 0-400mv. Not sure I will be able to set the lowest voltage with the level of precision necessary. I may be able to use a stepped attenuator I have (Jarrod AV-50), set the output voltage to a range that the AM-530 can read reliably, and use the stepped attenuator to drop the final voltage to a level that is appropriate. Of course, at these low levels, every connection can have a significant effect on the final input voltage. The challenges never end!
Mitch