Performance Tests
4-114
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
Serial Trigger Checks (TDS7000B Series Option ST and CSA7000B Series 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 SMA-to-BNC, TCA-BNC, or
TCA-SMA adapters (Item 19)
Prerequisites See page 4--17. Also, the instrument must have passed Check DC
Voltage Measurement Accuracy on page 4--45.
1. Install the test hookup and preset the instrument controls:
50 Ω Coaxial cables
Sine-wave
generator
Instrument under test
Figure 4- 35: Initial test hookup
a. Hook Up the test-signal source (see Figure 4--35):
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 DE FAULT SETUP button.
c. Modify the initialized front-panel control settings:
H Set the vertical SCAL E 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
centeredonthedisplay.
Check Serial Trigger Baud
Rate Limits and Word
Recognizer Position
Accuracy
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