Tektronix 5110, Инструкция по эксплуатации

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Adjustment-5110
12. Adjust Horizontal Gain
a. Press the POWER switch to turn off the oscilloscope
and interchange the amplifier and the time-base units in
their respective compartments. Pull the POWER switch to
on.
b. Connect a 5-volt, 1-kilohertz square-wave signal of
standardized amplitude from the calibration generator to
the
amplifier input connector, using a 42-inch
coaxial
cable.
NOTE
Use an amplifier plug-in known to be accurately
calibrated, or verify correct calibration by applying a
known signal and meauring the differential output at
pins A7 and B7 of the plug-in connector. The
deflection factor at the output is
50 millivolts/division.
c. Position the 5-division display between the second
and seventh vertical graticule lines.
d. Check— the display for a horizontal deflection of 5
divisions, ±0.15 division (±3%).
e. Adjust—Hor Gain R136 for exactly 5 divisions of
deflection. See Fig. 3-4 for adjustment location.
f. Disconnect the coaxial cable between the amplifier
and the calibration generator.
13. Adjust X-Y Phase Difference
a. Press the POWER switch to turn off the os­
cilloscope.
b. Remove the time-base unit from the vertical com­
partment and install a second amplifier in the left vertical
compartment.
NOTE
Identical amplifier units should be installed in the
oscilloscope.
c. Connect the sine-wave generator through a 42-inch
coaxial cable, 50 ohm termination, and a tee connector, to
an amplifier input. Connect an 18-inc coaxial cable from
the tee connector to the other amplifier input.
d. Pull the oscilloscope POWER switch to on.
e. Set both amplifier units for a deflection factor of
1 volt/division and de input coupling.
f. Set the sine-wave generator for a 100-kilohertz
output.
g. Adjust the vertical and horizontal position controls
to center the diagonal display, then adjust the sine-wave
generator for a display amplitude of 6 divisions vertically
and horizontally.
h. Check — that any opening of the diagonal-loop
display at the graticule center line is 0.07 division or less
(measured horizontally). This indicates a phase difference
of 1° or less between the vertical and horizontal systems.
i. Adjust —Phase C116 for minimum loop opening (a
straight line) in the diagonal-loop display. See Fig. 3-4 for
adjustment location.
j. Press the POWER switch to turn off the oscilloscope.
k. Disconnect the coaxial cables, termination and tee
connector between the amplifiers and sine-wave
generator.
l. Remove the vertical amplifier from the horizontal
compartment and install the time-base unit in that com­
partment. Pull the oscilloscope POWER switch toon. This
completes the Adjustment procedure forthe oscilloscope.
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