Preliminary Control Settings - Tektronix 475 Instruction Manual

Calibration—475
VERTICAL SYSTEM CHECK
Equipment Required
1. Standard Amplitude Calibrator (067-0502-01).
2. High-Frequency Constant-Amplitude Signal Generator
(067-0532-01).
8. Dual Input Coupler.
Control Settings
Preset instrument controls to the settings given under
Preliminary Control Settings.
1. Check Beam Finder Operation
a. Position the trace off screen with the CH1 and
horizontal POSITION controls.
b. Push the BEAM FIND button and hold it in.
d. Release the BEAM FIND button.
2. Check Channel 1 and 2 Gain Switch Balance
a. Set both VOLTS/DIV switches to 2mV .and both
AC-GND-DC switches to GND.
b. Position the trace to the center horizontal line with
the CH 1 POSITION control.
c. CHECK—CRT display for minimum trace shift
between 2mV and 5mV positions of the CH 1 VOLTS/
DIV switch.
d. Set the VERT MODE switch to CH 2.
e. Position the trace to the center horizontal line with
the CH 2 POSITION control.
5-6
b. Rotate the CH 2 VAR control through its range.
e. Set the VERT MODE switch to CH 1.
g. Rotate the CH 1 VAR control through its range.
j. Return both VAR controls to the detent position.