Operator Checks and Adjustments
6. Set the bottom of the trace of the PROBE ADJUST square-wave signal
to a convenient horizontal graticule line with the Vertical POSITION
control.
7. Check for a five-division display of the PROBE ADJUST square-wave
signal.
8. Select CH 2 VERTICAL MODE and repeat steps 6 and 7.
9 Disconnect the probes from the instrument.
Timing Checks
The time measurement cursors may be used to check the horizontal deflec
tion system.
1. Preset instrument controls and obtain a baseline trace and set the A
SEC/DIV switch to 0.1 ms. Vertically center the baseline trace.
2. Press the TIME button to select the Time Measurement function for
measuring time difference.
3. Align the reference cursor to the second vertical graticule line using the
|<- OR DELAY control (both cursors are positioned together).
4. Adjust the -H control for a reading of 800.0 p.s
5. Check that the cursors are eight divisions apart.
6. Press the CLEAR MEAS’MT button to remove the cursors from the
display.
4-6
2245A Operators
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