Agilent Technologies 8935 Series Especificações descarregar pdf (Página 85)

100

101

84 Chapter 3

Troubleshooting

Manual Troubleshooting Procedures (Step 4)

3. Set the RF signal generator’s frequency to 100, then 500, 900, and

1800 MHz. For each frequency reset the Tune Freq to that

frequency. The Test Set’s measurements should read as follows:

a. TX Power should read approximately 0.001 W for each frequency.

b. Frequency should read 100, 500, 900, and 1800 MHz respectively.

c. Press the

Spec Anl key to access the analog spectrum analyzer.

Observe the level and frequency of the signal.

Isolating the RF Source

The RF Generator function uses the following assemblies. Refer to

Figure 3-19 and the block diagrams in Chapter 10 , “Block Diagrams,”

on page 283.

• A2A120 LO IF/IQ Modulator

• A2A25 Signal Generator Synthesizer

• A2A24 Output Section

• A2A110 Upconverter

Figure 3-19 Isolating the RF Source

OPP

100 W

Attenuator

Splitter

Output

ANT

IN/OUT

DUPLEX

OUT

Input

Attenuator

Power

Detector

Output

Section

Modulator

Sig Gen

Synthesizer

RF Generator

Reference

RF I/O

RPP

Attenuator

Converter

TO RF ANALYZER

DC Block

1 2 ... 80 81 82 83 84 85 86 87 88 89 90 ... 342 343

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