Tektronix DPO3000 Series, Service Manual

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Adjustment Procedures
Time Mark The Time Mark test is often the second test type to appear in the prompts. When
you receive a time mark prompt, complete the following steps:
1. Push the Markers front-panel button.
2. Push the WAVEFORM lower-bezel button, and then push the
side-bezel button.
NOTE. If a 625 Hz signal is required, set the time marker to 1.6 ms.
3. Select the Amplitude fi eld using the front panel scroll buttons, and then
change the voltage by using the large front panel knob on the calibrator.
4. Ensure that the red light is illuminated to indicate that the output is on. If not,
push the
ON button.
5. On the oscilloscope, push the OK Do Next Step right-bezel button.
Deskew (MSO Only) If you are using the MSO3000 Series oscilloscope, and you receive a prompt for a
deskew test, complete the following steps:
1. Plug the probe, notch down, into the digital channel input, as shown in the
following
fi gure. Ensure that it snaps into place. Keep the probe plugged in
for the remainder of the calibration procedure.
Figure 3-5: Digital channel input (MSO only)
3–8 MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual