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Performance Tests
2-34
TDS5000B Series Specifications and Performance Verification
H Set the horizontal SCALE to 400 ps (500 p s for TDS5054BE).
H From the toolbar bar, click Horiz, and select the Acquisition tab.
H Click Average, and set the number of averages to 16.
c. Hook up the test-signal source:
H Connect the sine wave output of a sine wave generator to a 50 Ω
precision coaxial cable.
H Connect the cable to either a coupler or power divider and two 50 Ω
precision coaxial cables, as shown in Figure 2--13. (See note below.)
NOTE. To ensure that you do not introduce errors into the delay measurements,
use cables that have a delay difference of less than 10 ps between each other.
You can check the variance in delay between cables by connecting the cables to
CH 1 and CH 2. and, using the Vbarcursors, measure the delay. Reverse the
cables and repeat the measurement. Divide the difference between the two delay
measurements by 2. If the result is less than 10 ps, you can proceed with the test.
H Connect the coupler or cables to CH 1 and CH 2. See Figure 2--13.
TDS5000B Series oscilloscope
Sine wave
generator
Power divider
Output
SMA female-
to-female
Male SMA to
femaleBNC
3places
50 Ωprecision coaxial cables
Figure 2- 13: Initial test hookup
2. Confirm all four channels are within limits for channel delay:
a. Set up the generator: Set the generator frequency to 250 MHz and the
amplitude at six to eight divisions for CH 1.