Tektronix 608 monitor Instruction Manual page 71

Performance Check and Adjustment—608
E. Z-AXIS AMPLIFIER
Equipment Required:
4. Test oscilloscope
5. 50-ohm cables (2 required)
BEFORE YOU BEGIN:
(1) Perform the Power Up Sequence preceding the
Performance Check and Adjustment procedure.
(2) Refer to Section 9, Instrument Options, and the
Change Information at the rear of this manual for
any modifications which may affect this procedure.
(3) See the Test Point and Adjustment Locations
foldout page in Section 8, Diagrams and Circuit
Board Illustrations.
Z-AXIS PRELIMINARY CONTROL SETTINGS:
Horizontal Position ....... Midrange
INTENSITY ............... Visible display
FOCUS .................. Well-defined display
E1. CHECK/ADJUST Z-AXIS GAIN (R525)
NOTE
The following procedure sets the Z-Axis
Amplifier Gain for full intensity from a +1-
volt input signal. This procedure can be
altered for any voltage, from +1 volt to +6
volts, to provide the desired intensity
SETUP CONDITIONS
NOTE
For a partial procedure, first perform the Z-
Axis Preliminary Control Settings, then
proceed with the following instructions.
Test
Ramp Oscillo-
608 Input
Square-Wave
a. Set the square-wave generator amplitude for +1 volt
b. Disconnect the +1-volt square wave from the test
c. Connect a 10X probe from the test oscilloscope
vertical input to TP599. Set the test oscilloscope for a
deflection factor of 10 volts/division with 10X probe.
d. Set the INTENSITY control for a zero volt level on
e. Connect the +1-volt square-wave signal to the +Z
INPUT.
f. CHECK—The amplitude of the square wave
displayed on the test oscilloscope is at least 70 volts
g. ADJUST—R525 (Z Gain) so that the amplitude of
the square wave displayed on the test oscilloscope is