Tektronix WFM601, Руководство по обслуживанию

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Performance Verification
WFM 601 - Service Manual
4–21
i. Turn on the CH B display.
j. Adjust the Reference Level for a screen display.
k. Turn off spectrum analyzer CH A and CH D display.
l. Note the reference level of the straight trace.
m. Select B Save A.
n. Remove the bnc female-to-female connector coupling the 50 -to-75
minimum loss attenuators together.
o. Connect the two cables, with the 50 -to-75 minimum loss attenuators
to the WFM 601 SER A INPUT.
p. CHECK – that the spectrum analyzer trace is within 1 major division (1
dB) of the reference level established in step l. (Channel selected or
not.)
q. Move the cables and the 50 -to-75 minimum loss attenuators to the
WFM 601 SER B INPUT.
r. CHECK – that the spectrum analyzer trace is within 1 major division (1
dB) of the reference level established in step l. (Channel selected or
not.)
s. Reverse cable to the WFM 601 SER B INPUT.
t. CHECK – that the spectrum analyzer trace is within 1 major division (1
dB) of the reference level established in step l. (Channel selected or
not.)
This completes the Performance Check procedure.