Tektronix WFM 601A, Service Manual

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Performance Verification
WFM 601A, WFM 601E, & WFM 601M Service Manual
4–23
f. Adjust the leveled sine wave generator amplitude for a 400 mV display
on the waveform monitor.
g. Set the leveled sine wave generator frequency to 50 kHz.
h. CHECK – that the amplitude on the waveform monitor is greater than
280 mV and less than 450 mV.
i. Set the leveled sine wave generator frequency to 270 MHz.
j. CHECK – that the amplitude on the waveform monitor is greater than
280 mV and less than 450 mV.
k. Set the leveled sine wave generator frequency to 450 MHz.
l. CHECK – that the amplitude on the waveform monitor is greater than
280 mV and less than 450 mV.
m. Disconnect the leveling head from the waveform monitor.
23. Eye Timing (Horizontal Deflection Factor) (WFM 601E, WFM 601M only)
REQUIREMENT – Overlay Mode: 1 ns/div 3%. 10-Eye Mode: 3 ns/div
3%. Mag On: 500 ps/div 3%.
a. Connect the serial component generator to the waveform monitor SER A
input and terminate the 75 ohm loop-through input.
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. To load the factory preset, press the PRESET button, use the bezel knob
to pick the FACTORY setting, then press the RECALL bezel button.
d. Select the EYE display mode.
e. Enter the CURSOR menu and select the TIME cursors.
f. CHECK – using the timing cursors that two cycles of the Eye pattern is
7.4 ns 3% (7.178 to 7.622 ns).
g. Press the MAG button.
h. CHECK – using the timing cursors, that one cycle of Eye pattern is
3.7 ns 3% (3.663 to 3.737 ns).
i. Press the MAG button to turn off magnification.