Checks and Adjustments
To reduce channel-to-channel signal delay errors with Parametric
Measurements:
1.
Follow Steps 1-3, above.
2.
Measure the time interval from
CH1
to CH2 using the TIME function
from the MEASURE menu.
3. Use this number as a reference and subtract its value from all
subsequent time interval measurements.
Amplitude
Check
1.
Obtain a display as described in "Initial Setup.*
2.
Set the VOLTS/DIV switch to 100 mV, the SEC/DIV switch to
1
ms, and
20 MHz BW LIMIT on.
3. Adjust the CH 1 POSITION control to center the display on the screen.
4.
CHECK—Amplitude of the CALIBRATOR signal is between 3.88 and
4.12 divisions as measured on the center vertical graticule line.
5. Select AV and carefully superimpose the cursors on the high and low levels
of the waveform. CHECK—AV readout is between 392 mV and 408 mV.
6. Repeat this procedure using the Channel 2 connector and controls.
4-6
2465B/2455B/2445B Operators
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