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Chapter 8 195

Performance Tests

RF Generator Harmonics Spectral Purity Performance Test 6

RF Generator Harmonics Spectral Purity

Performance Test 6

The purpose of this test is to verify that the Test Set meets the

specification limits in PTR (Performance Test Record) Table 9-6, “RF

Generator Harmonics Spectral Purity Test 6 Record,” on page 250.

Harmonic signals with the carrier set to several frequencies and two

different levels (maximum output and minimum level vernier) are

searched for by an RF spectrum analyzer.

Figure 8-11 Setup

Procedure

1. Set up the spectrum analyzer in accordance with its operating

manual.

2. On the Test Set:

a. Press

Preset.

b. Select the INSTRUMENT CONFIGURE screen.

c. Set the RF Display field to Freq.

d. Select the CDMA GENERATOR screen.

e. Set the CW RF Path field to Bypass.

f. Select the RF GENERATOR screen.

g. Set the RF Gen Freq to 1 MHz.

h. Set the Amplitude to -10 dBm.

3. Set the test set’s RF generator to the frequencies and levels shown in

the Performance Test Record (PTR) and measure the second and

third harmonics. For each measurement convert the harmonic level

to dB below the fundamental (dBc) and compare the computed levels

to the limits.

INPUT 50Ω

DUPLEX OUT

Spectrum Analyzer

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