Fluke 96000 Series Service Manual page 57

3. On the UUT, push , followed by the Modulation Select softkey and
ensure amplitude modulation (AM) is selected. Set the UUT as follows:
For the 96270A, ensure the Leveling Head output is selected.
Frequency
Level
Mod Rate
AM Depth
Output
Modulation
4. Use the Measuring Receiver autotune feature to tune to the input signal and
measure the AM rate. Verify that the measured rate is within the tolerance
listed in Table 3-6.
5. Set the UUT modulation rate to 100 kHz and repeat step 4.
Table 3-6. AM Rate Test – Leveling Head (96040A and 96270A)
Level Frequency
+10 dBm 30 MHz
6. Set the UUT as follows:
Frequency
Level
Mod Rate
AM Depth
Output
Modulation
7. Use the Measuring Receiver autotune feature to tune to the input signal and
measure the AM depth. Verify that the measured depth is within the tolerance
listed in Table 3-7.
8. Repeat step 7 for the remaining AM depth test points listed in Table 3-7.
Table 3-7. AM Depth Test – Leveling Head (96040A and 96270A)
Level
+14 dBm
Note
30 MHz
+10 dBm
20 kHz (Sine)
50 %
OPER
ON
Modulation Rate
20 kHz
100 kHz
125 MHz
+14 dBm
1 kHz (Sine)
90 %
OPER
ON
Modulation
Frequency
Rate
1 kHz
125 MHz
100 kHz
1 kHz
1 GHz
20 kHz
Depth
19.999 0 kHz to
50 %
20.001 0 kHz
99.99 0 kHZ to
50 %
100.01 0 kHz
Depth Tolerance
90 % 87.2 % to 92.8 %
90 % 87.2 % to 92.8 %
90 % 87.2 % to 92.8 %
90 % 87.2 % to 92.8 %
3
Performance Tests
Performance Test
Tolerance
3-15