Tektronix TDS 820, Руководство пользователя

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Brief Procedures
Appendix C: Performance Verification
TDS 820 Performance Verification
1Ć9
Verify the Trigger System
Equipment Required: Three SMA cables and a T connector.
Prerequisites: None.
Procedure:
CAUTION
Inputs to this oscilloscope can be damaged by static discharge.
Wear your antistatic wrist strap whenever making connections the
oscilloscope.
1. Install the test hookup and preset the oscilloscope controls:
a. Hook up the signal source: Connect one end of an SMA cable to the
1 MHz TEST SIGNAL OUTPUT on the rear panel. Connect the other
end of the cable to the T connector. Connect the T connector, through
SMA cables, to the CH 1 input and EXT TRIGGER INPUT on the
front panel. (See Figure 1-3 on page 1-6.)
b. Initialize the oscilloscope:
H
Press save/recall SETUP.
H
Press the main-menu button Recall Factory Setup.
H
Press the side-menu button OK Confirm Factory Init.
c.
Modify default settings:
H
Press TRIGGER MENU.
H
Press the main-menu button Source; press the side-menu button
External Input.
H
Press the main-menu button Mode; press the side-menu button
Normal.
H
Press AUTOSET
to obtain a viewable, triggered display.
H
Set the horizontal SCALE to 200 ns.
H
Press CLEAR MENU to remove the menus from the screen.
2. Verify that the trigger system operates: Confirm that the following state-
ments are true.
H
The trigger level readout for the 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 untriggered.)