Tektronix TDS 820, Manual

Page: 56 / 94

Performance Tests
Performance Verification
1Ć42
These procedures check those characteristics that relate to the trigger system
and are listed as checked under
Warranted Characteristics in Section 1,
Specification.
Check Accuracy, Trigger-Level
Equipment Required: One function generator (Item 13), one BNC to SMA
adapter (Item 8), one precision coaxial cable (Item 2), 50
W
power divider
(Item 12), and two SMA cables (Item 3).
Prerequisites: The oscilloscope must meet the prerequisites listed on
page 1-11.
Procedure:
Function
Generator
Output
SMA Power Divider
BNC to SMA Adapter
Coaxial Cable
Figure 1-19: Initial Test Hookup
1. Install the test hookup and preset the instrument controls:
a. Hook up the test-signal source:
H
Set the output of a function generator to 1 volt.
H
Connect the output of a function generator through a 50
W
preci-
sion coaxial cable, a BNC to SMA adapter, a 50
W
power divider
and two SMA cables, to the CH 1 and EXT TRIGGER INPUT.
H
Set the generator for a 10 kHz ramp.
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.
Trigger System
Checks