Service manual

26 2
Performance Test
Performance Test
Figure 2-3 OSC Level Accuracy Test Setup 2
12. Set the 4294A as follows.
Setting Operation
Center Frequency: 1 MHz [Center] - [1] - [M/μ]
OSC Level: 0.75 V [Source] - LEVEL - [.] - [7] - [5] - [×1]
NOTE The OSC level must be set to 0.75V because impedance mismatching occurs between the
4294A and the power sensor. The calculation sheet and the test record say the OSC level is
0.5 V.
13. Press [Trigger] - Single for a single sweep measurement:
14. Record the following values according to the calculation sheet.
a. OSC level monitor reading
b. Power meter reading
c. OSC level calculated from the power meter reading.
d. OSC level monitor accuracy.
15. Confirm that the OSC level monitor accuracy is within the monitor accuracy limit.
NOTE If the monitor accuracy is beyond the limit, OSC Level Test fails.