Tektronix 1740A Series, User Manual

Page: 131 / 368

Performance Verification
4–28
1740A/1750A/1760 – Series Service Manual
d. Enter the CONFIG menu. Select VECTOR, then select VECTOR TEST
ON.
e. Check – for the best overlay of the circles without any separation, and
best center dot overlay (should appear to be one dot).
f. Exit the CONFIG menu, then enter the GAIN menu. Select VARIABLE
OFF. Exit the GAIN menu.
g. Select WAVEFORM DISPLAY.
h. Enter the FILTER menu and select R–Y.
i. Check – for the R–Y display. See Figure 4–6.
5m
VECTOR PHASE
Figure 4–6: R–Y Display
j. Enter the FILTER menu and select FLAT. Exit the FILTER menu.
23. Vector Phase, Gain, and Transients
Requirement – Phase Accuracy Error: 1.25
°
. Gain Accuracy Error:
2.5%.
a. Select VECTOR DISPLAY and EXT REF.
b. Check – that all the color vector dots can be placed within the boxes
1.25
°
and an amplitude of 2.5%. Note: The burst vector position is
not critical.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com