Agilent Technologies 8935 Series Especificações Página 232

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Chapter 8 231
Performance Tests
CDMA Analyzer Modulation Accuracy Performance Test 29
2. On the vector signal analyzer:
a. Set the center frequency to 881.52 MHz.
b. Set the span to 2.6 MHz.
c. Press the
Instrument Mode key.
d. Press the
Digital Demodulation (F4) key.
e. Press the
Demodulation Setup (F5) key.
f. Press the
Demodulation Format (F1) key.
g. Press the
Standard Setups (F7) key.
h. Press the
CDMA Base (F6) key.
i. Press the
D display button.
3. Use the following formula to calculate rho.
4. Compare and record the result in PTR Table 9-29, “CDMA Analyzer
Channel Power Level Accuracy Test 28 Record,” on page 280.
5. Repeat the previous steps for a frequency of 1851.25 MHz and record
the results in PTR Table 9-29, “CDMA Analyzer Channel Power
Level Accuracy Test 28 Record,” on page 280.
ρ
1
1 EVM
2
+
-------------------------=
ρ rho=
EVM = Error Vector Magnitude (%rms)
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