Agilent Technologies 8935 Series Especificações descarregar pdf (Página 197)

196 Chapter 8

Performance Tests

RF Generator Spurious Spectral Purity Performance Test 7

RF Generator Spurious Spectral Purity

Performance Test 7

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

specification limits in PTR (Performance Test Record) Table 9-7, “RF

Generator Spurious Spectral Purity Test 7 Record,” on page 254.

Spurious 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 8-12 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 242 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 level of the

spurious signals at the frequencies shown. 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

1 2 ... 192 193 194 195 196 197 198 199 200 201 202 ... 342 343

Sem comentários

Agilent Technologies 8935 Series Especificações Página 197