Tektronix CSA7404B, User Manual

Page: 49 / 438

Incoming Inspection
CSA7000B Series & TDS7000B Series Instruments User Manual
1- 29
Instrument under test
BNC cable from PROBE
COMPENSATION output
to CH 1 input
Figure 1- 12: Setup for trigger test
4. Touch the Vert button, and then touch Offset . Adjust the Ch1 Offset to
--0.25 V using the multipurpose knob.
5.
Set the Vertical
SCALE
to
100 mV
per division.
6.
Verify that the main trigger system operates:
Confirm that the following
statements are true.
H
The trigger level readout for the A (main) trigger system changes with
the trigger-
LEVEL knob.
H
The trigger- LEVEL knob can trigger and untrigger the square-wave
signal as you rotate it. (Leave the signal un triggered).
H
Pushing the front-panel trigger
LEVEL
knob sets the trigger level to the
50% amplitude point of the signal and triggers the signal that you just
left untriggered. (Leave the signal triggered.)
7. Verify that the delayed trigger system operates:
a. Set up the delayed trigger:
H
From the Trig menu, select A
→
B Sequence . . . . This displays the
A
→
B Sequence tab of the trigger setup control window.
H
Touch the Trig After Time button under A Then B.
H
Touch the B Trig Level control in the control window.
b. Confirm that the following statements are tru e:
H
The trigger-level readout for the B trigger system changes as you
turn the lower multipurpose knob.
H
As you rotate the lower multipurpose knob, the square-wave
probe-compensation signal can become triggered and untriggered.
(Leave the signal triggered.)