Agilent Technologies 54657A Specifications Page 114

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To adjust the power supply
The power supply has a +5.1 V adjustment and a –5.25 V adjustment. The
other voltages are based on the +5.1 V adjustment. In this procedure you use
a multimeter to measure the +5.1 V and5.25 V, and if necessary, adjust the
supplies to within tolerance.
Table 4-9
Equipment Required
Equipment Critical specifications Recommended Model/Part
Digital multimeter 0.1 mV resolution, accuracy ±0.05% Agilent 34401A
1 Set up the oscilloscope for the voltage adjustment.
a Turn off the oscilloscope and disconnect power cable.
b Remove the cover from the oscilloscope as described in "To replace
an assembly" on page 4-46 of this chapter.
c Place the oscilloscope on its side.
d Connect the negative lead of the digital multimeter to a ground point
on the oscilloscope chassis.
e Reconnect power cable.
f Turn on the oscilloscope.
Service
Adjusting the Oscilloscope
4–22
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