Performance Check Procedure
2. Geometry
a. Connect time mark generator (TG 501) to CH 1 via a 50 Cl BNC coax
ial cable and a 50 f l BNC termination.
b. Set generator for 0.2 p.s time marks.
c. Position the bottom of the CH 1 signal below the bottom graticule line.
It may be necessary to increase the A intensify in order to see the time
markers.
d. CHECK—deviation of any vertical line within the center eight horizontal
divisions does not exceed 0.1 division (half a minor division).
e. Set CH 1 COUPLING to GND.
f. Position trace slowly from the bottom graticule line to the top graticule
line while making the following check.
g. CHECK—bowing or tilt of baseline trace doesn't exceed 0.1 division
(half a minor division) within the eight vertical divisions.
h. Disconnect test signal from the 2245A.
2245A Operators
7-9
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