Performance Check Procedure
3. CH 3 and CH 4 VOLTS/DIV Trace Shift
a.
Set VERTICAL MODE to CH 3 (CH 2 o ff).
b.
Position trace to the center horizontal graticule line.
c.
Switch CH 3 VOLTS/DIV between 0.1 V and 0.5 V.
d.
CHECK—trace shift does not exceed one division.
e.
Set VERTICAL MODE to CH 4 (CH 3 o ff).
f.
Position trace to the center horizontal graticule line.
g.
Switch CH 4 VOLTS/DIV between 0.1 V and 0.5 V.
h.
CHECK—trace shift does not exceed one division.
4. CH 1 and CH 2 VAR VOLTS/DIV Trace Shift
a. Set:
VERTICAL MODE
CH 1 VOLTS/DIV
b.
Position trace to center graticule line.
c.
Set CH 1 VAR VOLTS/DIV fully CCW (counterclockwise).
d.
CHECK—trace shift does not exceed one division.
e. Set:
CH 1 VAR VOLTS/DIV
VERTICAL MODE
CH 2 VOLTS/DIV
f.
Position trace to center graticule line.
g.
Set CH 2 VAR VOLTS/DIV fully CCW.
h.
CHECK—trace shift does not exceed one division.
i.
Set CH 2 VAR VOLTS/DIV to detent (calibrated) position.
7-12
CH 1 (CH 4 off)
2 mV
Detent (calibrated)
CH 2 (CH 1 off)
2 mV
2245A Operators