Tektronix 4000 Series, Service Manual

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Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
3- 1
Adjustment Procedures
This chapter contains the factory adjustment procedure for the DPO4000 Series
and the MSO4000 Series oscilloscopes. Only qualified personnel should perform
adjustment procedures. Read the
Service Safety Summary and the General Safety
Summary before performing any service procedures.
NOTE
. The voltage references inside the oscilloscope are very stable over time
and should not require routine adjustment. Before performing any procedure in
this chapter, do the Performance Verification procedures to check whether the
oscilloscope meets specifications. See the Tektronix 4000 Series Technical
Reference documentation.
Successful completion of this adjustment procedure automatically updates the
stored time and date of the latest successful adjustment. Completion of the
Performance Verification procedure does not update this date and time. If no
adjustment is needed, there is also no need to update the time and date of the
adjustment.
Required Equipment
The following equipment, or a suitable equivalent, is required to complete these
procedures.
The following table specifies required equipment for the MSO4000 Series
oscilloscope.
Description Minimum requirements Example
DC voltage source 50 mV to 70 V,
±
0.1% amplitude
accuracy
Fluke or Wavetek 9500
Oscilloscope Calibrator with
five 9530 active heads.
Digital calibrator probe Tektronix part number:
174--4535--XX