Tektronix TDS 820, Manual

Page: 66 / 94

Performance Tests
Performance Verification
1Ć52
H
Press the side-menu button –more–, until Mean appears in the
side menu. Press Mean.
H
Press the side-menu button –more–, until RMS appears in the
side menu. Press RMS.
Third, set the generator
amplitude.
Figure 1-25: Trigger Delay Jitter Level Setting
g. Measure the channel noise:
H
Press TRIGGER MENU.
H
Press the main-menu button Level. Use the keypad to set the
level to 0 V (press 0, then ENTER, on the keypad).
H
Press HORIZONTAL MENU.
H
Press the main-menu button Time Base Position; using the
general purpose knob, slowly adjust the time base position a
small amount until the displayed waveform starts at 0 V (at the
left center of the screen). See Figure 1-26.
H
Press the main-menu button Fine Scale. Press 0, on the keypad;
then press ENTER.
H
Press the main-menu button Time Base Position; using the
general purpose knob, slowly adjust the time base position a
small amount until the mean readout is as close to 0 V as pos-
sible.