VERTICAL SYSTEM CHECK
Calibration—475
Equipment Required
1. Standard Amplitude Calibrator (067-0502-01).
4. GR to BNC Female Adapter.
5. 42-inch 50 £2 BNC cable (two).
2. High-Frequency Constant-Amplitude Signal Generator
(067-0532-01).
6. X I0 BNC Attenuator.
7. 50 12 BNC Termination (two).
3. Medium-Frequency Constant-Amplitude Signal Genera
tor (Type 191).
8. Dual Input Coupler.
Control Settings
Preset instrument controls to the settings given under
Preliminary Control Settings.
f. CHECK—CRT display for minimum trace shift be
tween 2 mV and 5 mV positions of the CH 2 VOLTS/DIV
switch.
1. Check Beam Finder Operation
3. Check Channel 1 and 2 Variable Volt/Division
Balance
a. Position the trace off screen with the CH 1 and
horizontal POSITION controls.
a. Position the trace to the center horizontal line with
the CH 2 POSITION control.
b. Push the BEAM FIND button and hold it in.
b. Rotate the CH 2 VAR control through its range.
c. CHECK—That the trace is compressed and brought
into the CRT viewing area.
c. CHECK—That the CH 2 UNCAL light comes on when
the VAR control is out of the detent position.
d. Release the BEAM FIND button.
d. CHECK—CRT display for 2 divisions or less of
vertical trace shift when rotating the CH 2 VAR control
through its range.
2. Check Channel 1 and 2 Gain Switch Balance
e. Set the VERT MODE switch to CH 1.
a. Set both VOLTS/DIV switches to 2 mV and both
AC-GND-DC switches to GND.
f. Position the trace to the center horizontal line with
the CH 1 POSITION control.
b. Position the trace to the center horizontal line with
the CH 1 POSITION control.
g. Rotate the CH 1 VAR control through its range.
c. CHECK—CRT display for minimum trace shift
between 2 mV and 5 mV positions of the CH 1 VOLTS/
DIV switch.
h. CHECK—That the CH 1 UNCAL light comes on
when the VAR control is out of the detent position.
d. Set the VERT MODE switch to CH 2.
e. Position the trace to the center horizontal line with
the CH 2 POSITION control.
i. CHECK—CRT display for 2 divisions or less of vertical
trace shift when rotating the CH 1 VAR control through its
range.
j. Return both VAR controls to the detent position.
5-6
j. Return both VAR controls to the detent position.
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