01-06-2021, 06:34 PM
Hi All
Thanks very much for your advice.
Angie (my better half) helped me to move some equipment around in the workshop whilst I hobbled out there. At present I'm only checking 2 of the 'scopes I have, the Philips 3305 and the Tektronix 935a. The latter I'm please to say is working well although having not been used for a while I did notice that some of the adjustment control e.g. voltage adjusters needed to be switch right around several times to get them fully working - but they are now.
I have retried the 3305 with the probe I found set in 1x setting. The probe calibrate on the 'scope is indicated at 1.2V P to P x1. I now realise the noise I was getting yesterday may have been from not setting up correctly which I overcame today. However, it does appear that there is a problem with the second channel. I've attached some pics and you should be able to see that these are the same settings for both channels. Channel A appears to be spot on. Channel B has a much lower signal and for some reason cannot be adjusted? Is this a fault do you think and is it worth getting repaired or living with just one good channel?
Best Regards
Rob
Thanks very much for your advice.
Angie (my better half) helped me to move some equipment around in the workshop whilst I hobbled out there. At present I'm only checking 2 of the 'scopes I have, the Philips 3305 and the Tektronix 935a. The latter I'm please to say is working well although having not been used for a while I did notice that some of the adjustment control e.g. voltage adjusters needed to be switch right around several times to get them fully working - but they are now.
I have retried the 3305 with the probe I found set in 1x setting. The probe calibrate on the 'scope is indicated at 1.2V P to P x1. I now realise the noise I was getting yesterday may have been from not setting up correctly which I overcame today. However, it does appear that there is a problem with the second channel. I've attached some pics and you should be able to see that these are the same settings for both channels. Channel A appears to be spot on. Channel B has a much lower signal and for some reason cannot be adjusted? Is this a fault do you think and is it worth getting repaired or living with just one good channel?
Best Regards
Rob
if all else fails...read the instructions!
