Tektronix TDS 420A, Service Manual, Page: 74 / 288

Brief Procedures
4- 6
TDS 420A, TDS 430A & TDS 460A Service Manual
e. Confirm the four adjustment sections have passed status:
H
Press SHIFT ; then press UTILITY .
H
Press the main menu button System until Cal is highlighted in the
pop-up menu.
H
Verify that the word
Pass
appears in the main menu under the
following menu labels: Voltage Reference , High Frequency
Response , Low Frequency Response , and Trigger Skew . (See
Figure 4--2.)
Verify Pass status for the
adjustment sections.
Run a signal path
compensation and verify
status is Pass.
Display the
CAL
menu.
1
2 3
Figure 4- 2: Verifying Adjustments and Signal Path Compensation
This oscilloscope lets you compensate the internal signal path used to acquire the
waveforms you acquire and measure. By executing the signal path compensation
feature (SPC), you optimize the oscilloscope capability to make accurate
measurements based on the ambient temperature.