On Fri, 10 Feb 2006 17:12:33 -0800, "Glenn"
wrote:

The calibration bar is to calibrate the 10X scope probes. There is a
capacitor on the probe that gives you an adjustment to get a near perfect
square wave. The voltage should be very close but the frequency is rarely
exact. The capacitor probably will have little effect at 1X.
Glenn
"Eric R Snow" wrote in message
.. .
Thanks all for the info so far. Now another one. The probe is set at
1X. The volts/div is set at 50 m. the time/div is set at .1 ms. So
this tells me that each vertical division is 50 millivolts and each
horizontal division is .1 milliseconds. The probe is clipped to the
calibration bar. This bar is labeled as 300 mV 30mA ~1KHz. The display
shows the square wave with 6 divisions vertical and just over 10
divisions horizontal. Using the VAR knob in the center of the time/div
knob I can adjust the display to show exactly 10 divisions. When this
is done is the display correct? Or is it the calibration bar that is
wrong?
Thanks,
Eric


Thanks Glen. That makes perfect sense. The probe came with
instructions to clip it to the bar and adjust the probe with a plastic
screwdriver that came with the probe.
Eric