Agilent Technologies 8935 Series Spezifikationen Seite 225

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224 Chapter 8
Performance Tests
CDMA Generator Modulation Accuracy Performance Test 26
2. On the Vector Signal Analyzer:
a. Press the
Frequency key.
b. Set center frequency to 836.52 MHz.
c. Set the span to 2.6 MHz.
d. Press the
Instrument Mode key
e. Press the
Digital Demodulation (F4) key
f. Press the
Demodulation Setup (F5) key
g. Press the
Demodulation Format (F1) key
h. Press the
Standard Setups (F7) key.
i. Press the
CDMA Mobile (F7) key.
j. Press the
D key.
3. Use the following equation to calculate rho.
4. Compare and record the rho calculated in Table 9-27, “CDMA
Generator Modulation Accuracy Test 26 Record,” on page 278.
5. Set the CDMA GEN frequency on the Test Set and change the center
frequency on the Vector Signal Analyzer to the 1851.25 MHz.
6. Calculate rho (using the above equation), and record the result (rho)
in Table 9-27, “CDMA Generator Modulation Accuracy Test 26
Record,” on page 278.
ρ
1
1 EVM
2
+
-------------------------=
ρ rho=
EVM = Error Vector Magnitude (% rms)
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