Operation
Voltage Measurements
Automatic voltage measurements can be made through the measurement menus.
Set the oscilloscope up for automatic voltage measurement by:
1.
Pressing the MEASURE button.
2.
Selecting VOLTS from the menu by pressing button number 2.
The +
peak,
-peak, average, and peak-to-peak volts are measured and displayed
in the readout.
If the voltage measured has an extremely small peak-to-peak value, only the
average volts will be displayed.
If the input signal is AC coupled, only the peak-to-peak value will be displayed.
The voltage measurement is sensitive to input frequency. Signal frequencies above
1 MHz will have measurement errors greater than 5%.
For accurate voltage measurements using VOLTS, it is important that a DC
balance has been done at a temperature within 5°C of the operating environment
temperature. See "Auto DC Balance Routine" in the "Checks and Adjustments"
section for more information.
Display
Operation
Set both INTENSITY and READOUT INTENSITY controls for comfortable viewing,
but no brighter than you need. Use high intensity settings to observe low repetition-
rate signals, narrow pulses in long time intervals, or occasional variations in
fast signals.
2465B/2455B/2445B Operators
2-15
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