Tektronix WFM601, Service Manual

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Performance Verification
WFM 601 - Service Manual
4–13
g. CHECK – the test oscilloscope for a signal amplitude of 679 to 721 mV,
excluding sync.
h. CHECK – the test oscilloscope for a sync amplitude of 270 to 330 mV.
i. Move the 75 cable, that leads to the test oscilloscope to the WFM 601
MON OUT B.
j. CHECK – the test oscilloscope overall maximum signal peak-to-peak
amplitude of 679 to 7 mV peak-to-peak (no single pulse >350 mV
15.5 mV).
k. Go to the CONFIG MENU (FORMAT) and set the MON OUT AS to
GBR.
l. CHECK – the amplitude of the signal on the test oscilloscope for 679 to
721 mV peak–to–peak.
m. Move the 75 cable, that leads to the test oscilloscope to the WFM 601
MON OUT R.
n. CHECK – the amplitude of the signal on the test oscilloscope for 679 to
721 mV peak-to-peak.
o. Go to the CONFIG menu (FORMAT) and set the MON OUT AS to
YPBPR.
p. CHECK – for an overall maximum signal peak to peak amplitude of
679 to 721 mV peak-to-peak.
q. Disconnect test oscilloscope cable from MON OUT R.
11. Check Vector Horizontal and Vertical Gain Accuracy
REQUIREMENT – Vertical: 700 mV = 10 divisions of deflection 1%;
Horizontal: 700 mV = 8 divisions of deflection 1%.
a. Turn on CH 1 and turn off CH 3.
b. Select the color bar signal from the serial digital component generator.
c. Select VECTOR VIDEO DISPLAY.
d. Turn off generator B–Y.
e. Vertically position the display between the –0.3 and 0.7 graticule lines.
f. CHECK – for 10 divisions of deflection 0.5 minor divisions.
g. Turn on generator B–Y.
h. Turn off generator R–Y.