Datasheet

Performance Verification
11. On the Tektroni
x FCA/MCA3X00 Series instrument:
a. Push the Meas button and select Freq > Freq > A.
b. Push the Settings button, select Meas Time,enter20 ms, and then push
the Save/Exit buttontoreturntothemainscreen.
c. Push Input A and make the following selections:
d. Set the input coupling to DC.
e. Set the input impedance to 50 Ω.
f. Set the input attenuator to 1X.
g. Set the Trigger mode to Man.
h. Push the Trig menu button, enter 0V, and push the Save/Exit button to
return to the main screen.
i. Push the Analyze button until you see the Numerical Analysis display,
shown here:
Figure 2-1: Numerical Analysis display
Note that this display has the standard deviation readout (shown as Std:)
in the lower right corner of the screen.
j. Make sure that Hold/Run is set to Run (Meas appears in the upper right
segment of the screen).
12. If the instrument is still triggering (the Trig LED is flashing), slowly decrease
the Function Generator output level until the FCA/MCA3X00 Series
instrument stops counting.
NOTE. When adjusting the signal amplitude, if you hear a relay click in the
generator there will be a few cycles of incorrect data, which must be ignored.
Wait several seconds before proceeding.
13. On the Function Generator, increase the output level in 10 mV increments
until the Gate LED begins to flash. This can be an intermittent flash, it does
not have to be regular.
14. On the Tektronix FCA/MCA3X00 Series instrument, push Input A > Trig
and adjust the trigger level to read the highest possible frequency. Enter the
FCA3000, FCA3100, and MCA3000 Series Specifications and Performance Verification 2–13