Tektronix TDS6404, Service Manual

Page: 135 / 252

Performance Tests
TDS6000 Series Service Manual
4- 79
Serial Trigger Checks (Option ST Only)
These procedures check those characteristics that relate to the serial trigger
system and are listed as checked in
Specifications.
Equipment
required One precision 50
Ω
coaxial cables (Item 4)
One sine-wave generator (Item 12)
One TCA-BNC or TCA-SMA adapter (item 19)
Prerequisites See page 4--17. Also, the oscilloscope must have passed Check DC
Voltage Measurement Accuracy on page 4--29.
1. Install the test hookup and preset the instrument controls:
50
Ω
Coaxial cables
Sine-wave
Generator
TDS6000 Series
Figure 4- 34: Initial test hookup
a. Hook Up the test-signal source (see Figure 4--34):
H
Connect the sine wave output of the sine-wave generator through a
50
Ω
precision coaxial cable to CH 1 through an adapter.
H
Set the sine-wave generator to output a 433 MHz sine wave.
b. Initialize the instrument: Press the DEFAULT SETUP button.
c. Modify the initialized front-panel control settings:
H
Set the vertical SCALE to 50 mV per division.
H
Set the horizontal SCALE to 2.5 ns per division.
H
Adjust the sine-wave generator output for 4 divisions of amplitude
centered on the display.
H
Adjust the trigger LEVEL to trigger at 25% (--1 division) on the
sine wave.
Check Serial Trigger Baud
Rate Limits and Word
Recognizer Position
Accuracy