DPO4000 Series Service Manual 3-1
Adjustment Procedures
This chaptercontains the factory adjustment procedures for the DPO4000 series
oscilloscopes. Only qualifiedpersonnel should perform adjustment procedures.
Read the Service Safety Summary and the General Safety Summary before
performing any service procedures.
NOTE. The voltage referencesinside the oscilloscope are very stable over time
and should not requireroutine adjustment. Before performing any procedure in
this chapter,do the Performance Verification proceduresto check whether the
oscilloscope meetsspecifications. See the DPO4000 Technical Reference.
Successful completionof this adjustment procedure automatically updates the
instrument Calibration Due date and time. (Completion of the Performance
Verificationprocedure does not update the instrument Calibration Due date and
time.)

Required Equipment

The following equipment, or a suitable equivalent, is requiredto complete these
procedures.
Description Minimum requirements Example
DCvol tage source 50m V to 70 V,±0.1% ampli tude
accuracy
Wavetek9500 Oscilloscope
Calibrator with one 9510
Output Module
Sine Generator 1GHz Wavetek9500 wi th 9530
t
t
d
l
EdgeGenerator 1kHz with <50 ps ch --chskew output modules
50ΩBNC cabl e BNCmaletoBNCmale,≈10 in
(25cm) long
Tektronixpart number
012-0208-00
Adjustment tool Nonconducting shaft with di ame-
ter≤2.5 mm (≤0.1 i n)
Tektronixpart number
003-1433-00