Agilent Technologies 8935 Series Spécifications télécharger pdf (Page 201)

200 Chapter 8

Performance Tests

AF Generator Frequency Accuracy Performance Test 11

AF Generator Frequency Accuracy

Performance Test 11

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

specification limits in PTR (Performance Test Record) Table 9-11, “AF

Generator Frequency Accuracy Test 11 Record,” on page 261.

Frequency accuracy is measured directly with a frequency counter. The

counter must be able to resolve 0.005% at 20 Hz.

Figure 8-16 Setup

Procedure

1. Set the counter to measure frequency.

2. On the Test Set:

a. Press

Preset.

b. Select the RF GENERATOR screen.

c. Set the AFGen1 To and AFGen2 To fields to Audio Out.

3. On the Test Set for Audio Frequency Generator 1 do the following:

a. Set the AFGen2 To level field to Off.

b. Set the audio frequency and level as shown in the Performance

Test Record (PTR) and measure the audio frequency. Compare the

measured frequency to the limits.

4. On the Test Set for Audio Frequency Generator 2 do the following:

a. Set the AFGen1 To level field to Off and AFGen2 To level field to

on.

b. Set the audio frequency and level as shown in the PTR and

measure the audio frequency. Compare the measured frequency

to the limits.

INPUT

AUDIO OUT

Counter

1 2 ... 196 197 198 199 200 201 202 203 204 205 206 ... 342 343

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Agilent Technologies 8935 Series Spécifications Page 201