Performance Check Procedure
d.
Set function generator output for 1 kHz sine-wave signal of five divi
sions peak-to-peak with maximum positive dc offset.
e.
Position the bottom of the signal to the center horizontal graticule line.
f.
Set CH 1 Input COUPLING to AC.
g.
CHECK—display is roughly centered about the center horizontal
graticule line.
h.
Move the test signal to the CH 2 input.
i.
Set CH 2 VERTICAL MODE to on (CH 1 off).
j.
Repeat the procedure for CH 2.
k.
Disconnect the test signal from the 2245A.
2. CH 1 and CH 2 VOLTS/DIV Trace Shift
a. Set:
CH 1 and CH 2
VERTICAL MODE
On
CH 1 and CH 2
VOLTS/DIV
2 mV
CH 1 and CH 2
Input COUPLING
GND
b.
Set VERTICAL MODE to CH 1 (CH 2 o ff).
c.
Position trace to center horizontal graticule line.
d.
Switch CH 1 VOLTS/DIV through all positions from 2 mV to 5 V.
e.
CHECK—trace shift does not exceed 0.2 division between steps.
f.
Set VERTICAL MODE to CH 2 (CH 1 o ff).
g.
Position CH 2 trace to the center horizontal graticule line.
h.
Switch CH 2 VOLTS/DIV through all positions from 2 mV to 5 V.
l
.
CHECK—trace shift does not exceed 0.2 division between steps.
2245A Operators
7-11
