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4-8
Calibrating and Adjusting
To adjust the oscilloscope display
To adjust the oscilloscope display
In this procedure, you will make adjustments using two display patterns.
Table 4-3
Equipment Required to Adjust the Oscilloscope Display
1
Connect the digital multimeter to the end of R901, located closest to the
fuse, as shown in Figure 4-3.
2 Adjust +B.ADJ for +14.00 V.
In the remainder of this procedure, you will make adjustments to:
3
Adjust V.HOLD (vertical hold) for vertical synchronization.
4 Set the INTENSITY control (lower-left on the front panel) to
approximately 50%.
When to Adjust the Oscilloscope Display
The oscilloscope display normally does not require adjustment. However, when it is
obvious that the display is out of adjustment, use this optional procedure.
Equipment Critical Specifications Recommended Model/Part
Digital multimeter Accuracy ±0.05,% 1 mV resolution Agilent 34401A
V.HOLD (vertical hold)
INTENSITY (intensity control on oscilloscope front panel)
H.HOLD (horizontal hold)
FOCUS
V.LIN (vertical linearity)
V.SIZE (vertical size)
Do not adjust Sub Bri or Cont controls
Do not adjust the SUB BRT (sub bright) or CONTRAST Controls. These controls are
preset at the factory to assure the correct number of display grayscales.
service.book Page 8 Wednesday, December 18, 2002 8:35 AM