Adjustments
Adjustments
The following adjustment procedures provide closed-case calibration for the THS3000 Series Oscilloscopes using known
reference sources. It measures the reference signals, calculates the correction factors, and stores the correction factors in
RAM. After completing the calibration, the correction factors can be stored in Flash ROM.
The oscilloscope should be calibrated after repair, or if it fails the performance test. The oscilloscopes have a normal
calibration cycle of one year.
Prerequisites
Use the equipment listed for the performance veri
fi
cation procedures. (See Table 1 on page 1.)
Allow the oscilloscope and test equipment to warm up for 30 minutes.
For each calibration point, wait for the oscilloscope to settle.
Verify that the oscilloscope battery is charged suf
fi
ciently
Power the oscilloscope with the Battery Charger/Power Adapter (Tektronix part number 119-7900-xx).
Calibration Procedure Outline
To do a complete calibration adjustment you must do all of the following steps:
1.
Check the instrument date and adjust if necessary (the calibration date will become the instrument date when you
save the calibration data)
2.
Select the Calibration Mode
3.
Do the Contrast Calibration Adjustment
4.
Do the Warm Up & Pre Calibration
5.
Do the Final Calibration
6.
Save the calibration data and exit the calibration mode
The following calibrations can also be done separately:
Contrast Calibration: If during normal operation the display cannot be made dark or light enough, or if the display is too
light or too dark after an instrument reset, you can do this calibration separately.
Probe Calibration
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Technical Reference
