Which probes for my first scope?

[jimmy74]

I'll have a better go at those settings today and let you know what readout I get, I am following Macboys instructions with a wire going from the CAL bridgt to the input.

thanks

 

[jimmy74]

Here are the settings I used for channel 2:
- volt/div = 5m (selector below this knob set to DC)
- Var/Unical = off
- Vert mode = channel 2
- Time/Div & Delay time = 0.02us
- horizontal display = A
- A Trigger Level = 0
- Source = Ch2
- Coupling = DC
- Holdoff = Normal
- Trig Mode = Auto

Placing one end of the wire inside the centre of the input plug and the other end on the cal bridge(and after focusing and positioning the wave) I do get a strange ripple wave on the screen, it may just be the wire that's picking up interference somewhere. Anyways the trigger lamp does come on. The same sort of thing happens with channel 1 except that the A trigger level doesn't behave the same way, I have to turn that knob towards the right side inorder to get the trigger lamp on and view a ripple waveform on the screen.

Does all this mean the scope is working properly?

 

[sofaspud]

I'm a little rusty too but,
if you're looking to measure a 300mV square wave, why select volt/div of 5mV? And 0.02us = 1/f = 50MHz.

 

[jimmy74]

As Macboy states 0.05V/DIV I mistook that for the mV reading so now I've set it to 50m and the horizontal to 0.2mS and here is a photo of what's on the screen:
13042013510 | Flickr - Photo Sharing!

 

[sofaspud]

That's looking better! Can't tell if that is the peak or the trough of the waveform though.
Adjust the intensity and focus so the trace isn't so hot (unless that was just for the photograph). Then raise the Volts/Div to try and get a full wavelength on the screen. I wouldn't worry too much about seeing the rising and falling edges at this point. When you get a full wavelength, you can use the vertical and horizontal Position knobs to align it with the graticule. The waveform should measure the calibration frequency and voltage.

 

[jimmy74]

I raised the volt/div to .2 and this is what I'm getting:

13042013511 | Flickr - Photo Sharing!

It seems as though the rise and fall are not visible, is this normal?

If so, I can be sure that I've got a working scope?

thanks

 

[gootee]

That looks good. You could see the edges if you cranked the timebase to a faster setting, and kept the edge on the display.

 

[sofaspud]

If so, I can be sure that I've got a working scope?

At 0.2 volts/div the 300mV signal should be 1.5 divisions... that looks good. At 0.2ms the 1kHz signal should be 5 divisions... that looks good.
The sure level has gone way way way up. The A channel should do the same with these settings.

 

[jimmy74]

Yes I do get the same waveform on Channel 1 too, the only thing I've noticed is that the Trigger Slope Level needs to be turned slightly (about 3mm) to the right on Channel 1 to get it to trigger. Channel 2 triggers pinpoint 0 slope level. Is this normal?

 

[sofaspud]

For a 40 year old o'scope, it probably is.

 

[jimmy74]

Ok so I can say that it's 99% functioning properly?
One last question for now, does the P6202A need a seperate power syupply to work properly with my 465B?

thanks

 

[sofaspud]

If your o'scope doesn't have a probe power jack, the P6202A will need an external power supply. The 1101A is the Tektronix external supply for that probe.

 

[jimmy74]

Ok thanks for that, are there any other "without probe" tests I can do or would it be better to wait untill I get my 6063B?

thanks

 

[jimmy74]

Do I just have to take off the rear panels inorder to get the hole metal cover off?

 

[Cambe]

Hello,
I'm a newbe too! I just received a TEK 453 scope serial #060463 and need help finding the right probes for it also.

Thanks,
Cambe

 

[jimmy74]

Finally managed to take the cover off my scope, here are some photos:

17042013518 | Flickr - Photo Sharing!

17042013520 | Flickr - Photo Sharing!

17042013521 | Flickr - Photo Sharing!

17042013519 | Flickr - Photo Sharing!

And here is a photo of what was rattling around inside the scope:

17042013522 | Flickr - Photo Sharing!

I had a good look but I couldn't find anything broken, does anyone happen to know where these plastic bits may come from?

thanks

 

[jimmy74]

Just got my P6063B probe and this is what I'm getting on the scope:

18042013523 | Flickr - Photo Sharing!

How come the rise and fall are still missing? They're just barely visible on the angles of the horizontal lines... is this normal?

thanks

 

[jjman]

Missing rise and fall is normal AFAIK. It is so "fast" that it appears instantaneous.

 

[jimmy74]

I think I have the chance to see what my scope can do. I've got a bassman clone on the bench that tends to whistle at high volumes, the bright channel, treble and presence seem to be the main victims, though I think it may just be where I placed the NFB wire. Anyways I'd just like to start using my scope on real equipment... the question is... how?

thanks

 

[gootee]

Just got my P6063B probe and this is what I'm getting on the scope:

18042013523 | Flickr - Photo Sharing!

How come the rise and fall are still missing? They're just barely visible on the angles of the horizontal lines... is this normal?

thanks

If you want to see the rise or fall, just crank the timebase to a higher speed. That will spread the signal out, horizontally. Adjust the horiz position or trigger level until the potion you want is positioned where you want it.