Tektronix WFM 601A, Руководство по обслуживанию

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Performance Verification
WFM 601A, WFM 601E, & WFM 601M Service Manual
4–9
j. CHECK – for one cycle of calibrator signal per 10 major divisions 0.5
minor division over the center 10 divisions.
k. CHECK – both ends of the magnified sweep for one cycle of calibrator
signal per 10 major divisions 0.5 minor division over the center
10 divisions.
l. Turn off the MAG Sweep and select 1 LINE SWEEP (5
m
s/div) and Line
indicator on.
m. CHECK – for one cycle of calibrator signal per two major divisions
1 minor division over the center 10 divisions.
n. Press CONFIG menu to turn the calibrator signal off.
o. Select the high-frequency timing signal (2.5 MHz) from the serial
component generator.
p. Turn on the MAG Sweep.
q. CHECK – for one cycle per two divisions 0.5 minor division.
r. Turn off the MAG Sweep.
7. Vertical Gain, Calibrator Amplitude, and Variable Gain Range
REQUIREMENT – 700 mV input = 700 mV 2%. Calibrator Amplitude:
700 mV 1%. Variable Gain Range: 0.2X to 1.4X. Serial Output Level =
800 mV 10%.
a. To load the factory preset, press the PRESET button, use the bezel knob
to pick the FACTORY setting, then press the RECALL bezel button.
b. Set the serial component generator output to the 100% Color Bars signal:
Modules DVG1
Signal Sets 525–270
Test Signals Color Bars
Color Bars 100% Color Bars
c. CHECK – that the signal display is 700 mV 14 mV (1 minor division
equals 20 mV).
d. Select the Serial B input.
e. CHECK – that the signal display is 700 mV 14 mV (1 minor division
equals 20 mV).
f. Connect a 75
W
coaxial cable, from the waveform monitor rear-panel
SERIAL OUT connector through a 75
W
feed-through termination to the
test oscilloscope vertical input.