Performance Tests
Performance Test 3
3-15
3. On the UUT, push , followed by the Modulation Select softkey and
ensure amplitude modulation (AM) is selected. Set the UUT as follows:
Note
For the 96270A, ensure the Leveling Head output is selected.
Frequency 30 MHz
Level +10 dBm
Mod Rate 20 kHz (Sine)
AM Depth 50 %
Output OPER
Modulation ON
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 Modulation Rate Depth Tolerance
+10 dBm 30 MHz
20 kHz 50 %
19.999 0 kHz to
20.001 0 kHz
100 kHz 50 %
99.99 0 kHZ to
100.01 0 kHz
6. Set the UUT as follows:
Frequency 125 MHz
Level +14 dBm
Mod Rate 1 kHz (Sine)
AM Depth 90 %
Output OPER
Modulation ON
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 Frequency
Modulation
Rate
Depth Tolerance
+14 dBm
125 MHz
1 kHz 90 % 87.2 % to 92.8 %
100 kHz 90 % 87.2 % to 92.8 %
1 GHz
1 kHz 90 % 87.2 % to 92.8 %
20 kHz 90 % 87.2 % to 92.8 %
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