Calibration—475
b. Set the INTENSITY control for a normal viewing
level.
c. Connect the Medium-Frequency Constant-Amplitude
Signal Generator (Type 191) to the CH 1 input and the
EXT Z-AXIS input (on the rear panel) via a GR-to-BNC
adapter, a BNC-T connector, and two 42-inch 50 £2 BNC
cables.
d. Adjust the Medium-Frequency signal generator for a 5
volt (peak-to-peak) 50 kilohertz signal.
e. CHECK—CRT display for noticeable intensity modu
lation of the positive peaks.
f. Disconnect the test setup.
5-60
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