Agilent Technologies 54657A Dokumentacja Strona 121

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To adjust the display (54615B/16B only)
There are no adjustments on the 54616C color display – if the display fails,
replace the display assembly.
The display adjustments are optional and normally do not require
adjustment. You should use this procedure only for the few cases when the
display is obviously out of adjustment.
Table 4-12
Equipment Required
Equipment Critical specifications Recommended
Model/Part
Digital multimeter Accuracy ±0.05%, 1 mV resolution Agilent 34401A
1 Connect the digital multimeter to the end of R901 closest to the fuse.
See figure next page.
2
Adjust +B for +14.00 V.
3 Press Print/Utility . Press the Service Menu softkey, then the
Self Tst Menu softkey, and then the Display softkey.
4 Adjust V.HO (vertical hold) for vertical synchronization.
5 Set the intensity control (on the front panel) to mid-range.
6 Adjust Sub Bri (sub bright) to the lowest setting so that the half
bright blocks on the display are visible.
7 Increase the intensity control to a comfortable viewing level.
This is usually about 3/4 of its maximum range.
Service
Adjusting the Oscilloscope
4–29
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