Performance Check Procedure
11. X -Y Phase Differen ce
a. Set:
HORIZONTAL MODE
VERTICAL MODE
CH 1 Input COUPLING
A
CH 1 (CH 2 off)
DC
b. Connect leveled sine-wave generator output to the CH 1 input via a
50 f l BNC coaxial cable and a 50 f l BNC termination.
c. Set leveled sine-wave generator output for six divisions of signal display
amplitude at 50 kHz.
e. Position dot to graticule center.
f. Set CH 1 Input COUPLING to DC.
g. CHECK—ellipse opening at the center is 0.3 division or less, measured
horizontally.
12. X-Axis Bandwidth
a. Set VERTICAL MODE to CH 2 (CH 1 off).
b. Set leveled sine-wave generator output for six divisions of horizontal
display amplitude at 50 kHz.
c. Set leveled sine-wave output to 3 MHz.
d. CHECK—X-Axis display is 4.2 horizontal divisions or more.
e. Disconnect the test equipment from the 2245A.
d. Set:
Horizontal MODE
CH 1 Input COUPLING
X-Y
GND
2245A Operators
7-45
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