Question on maximum input to 062

[dbeierl]

The front panel of the 062 is stenciled Max 50 V pk. Does that mean
that 100 V p-p is allowed? If not I suggest that the stencil be re-
done.

Regards,
David

[Stevan C.]

The input on the PCB is rated 50V from GND to Vpk
period.
:)
AC signals go "trough floor"
that would be Vpk x2 from -Vpk to +Vpk
Still only Vpk from GND to each side?
Still "Vpk" of "AC"
right?

or?

Stevan C.

[JYE Tek]

For an AC of 50Vpk its Vpp is 100V. So it is allowed for the 062.

2010/12/20 Stevan C. <ces...@gmail.com>

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[David Beierl]

At 10:14 AM 12/20/2010, JYE Tek wrote:
>For an AC of 50Vpk its Vpp is 100V. So it is allowed for the 062.

Ah -- but a 50v square wave would be the maximum, correct?

Rgds,
d

[Stevan C.]

Correct,

Then again,
the 50Vpk is less than 50V AC sine

right?

And there is the catch for the 240V AC (sine) of the wall plug:
it is *more* than 280 peak to peak, and about 1.41 times more than that...

Stevan C.

[David Beierl]

At 02:38 PM 12/20/2010, Stevan C. wrote:
>And there is the catch for the 240V AC (sine) of the wall plug:
>it is *more* than 280 peak to peak, and about 1.41 times more than that...

The "effective" voltage of a sine wave turns out to be what's called
the RMS voltage, which means the square root of the mean of the
squares of all the instantaneous voltages in a half cycle (ordinary
voltmeters do not measure this but rather the mean voltage; however
they're calibrated to display as though it were RMS voltage, which
works fine as long as you're measuring a sine wave).

The nominal voltage of a power line is expressed as the RMS voltage,
and the peak voltage the peak voltage equals the nominal times
SQRT(2). Peak to peak is of course twice this.

So a fifty volt square wave is the limit, as is a 35 Vac
signal. However such a signal would not fully display on screen as
the screen can only display 50 volts on the grid, and the signal
would have 100 V p-p.

Rgds,
d

[Stevan C.]

Depends:
5V div and showing 6divs/screen, we see 30V of the signal anyhow
:)

Back to the x100 "killer" probe?

Best regards,
Stevan

[David Beierl]

At 03:22 PM 12/20/2010, Stevan C. wrote:
>Depends:
>5V div and showing 6divs/screen, we see 30V of the signal anyhow
>:)

Needs more Vpos adjust... ;-)

d

[Stevan C.]

Call it what You like...
;-)

[David Beierl]

At 03:33 PM 12/20/2010, Stevan C. wrote:
>Call it what You like...
>;-)

Hey, on my Tek I can position the signal vertically several screens
up or down. No point being able to display a signal bigger than the
screen if you can't see it.

Granted the Tek cost two grand in 1975 or something like that, but still.

:-)