Specifications

Chapter 8 205
Performance Tests
AF Analyzer Frequency Accuracy to 100 kHz Performance Test 16
AF Analyzer Frequency Accuracy to 100 kHz
Performance Test 16
The purpose of this test is to verify that the Test Set meets the
specification limits in PTR (Performance Test Record) Table 9-16, “AF
Analyzer Frequency Accuracy to 100 kHz Test 16 Record,” on page 266.
To measure frequency accuracy up to 100 kHz, an AC signal at the
audio input is measured by an external frequency counter and
compared to the Test Set’s internal audio frequency counter.
Figure 8-21 Setup
Procedure
1. Set the frequency counter to measure frequency.
2. On the Test Set:
a. Press
Preset.
b. Select the AF ANALYZER screen.
c. Set the AF Anl In field to Audio In.
d. Set the Filter 2 field to >99kHz LPF.
e. Set the Audio In Lo field to Gnd.
3. Set the audio analyzer’s source to 1 V and set the frequencies as
shown in the Performance Test Record. Measure the frequency on
the Test Set and compare the measured frequency to the limits.
OUTPUT
AUDIO IN HI
Audio Analyzer
Counter
INPUT