Tektronix TDS 820, Manual

Page: 58 / 94

Performance Tests
Performance Verification
1Ć44
First, set the generator frequency
and amplitude, and set the
horizontal position.
Second, set the trigger
level and vertical offset.
Third, measure the trigger level
using cursors.
Figure 1-20: Measurement of Trigger-Level Accuracy
H
Press CURSOR; then rotate the general purpose knob to align
the active cursor with the start of the waveform.
H
CHECK that the @ Cursor readout is –310 mV to –490 mV.
3. If your oscilloscope has a delay line confirm each input channel trigger
source: Press TRIGGER MENU; then press the main-menu button
Source. Now press the side-menu button that corresponds to the input
channel trigger source you wish to confirm. Repeat substeps 2b and c for
all input channel trigger sources.
4. Disconnect the hookup:
a. First set the output of the generator to 0 volts.
b. Then disconnect the cables and adapters from the generator output
at the input connectors of channel last confirmed and the EXT TRIG-
GER INPUT.