Specifications

202 Chapter 8
Performance Tests
AF Analyzer Residual Noise Performance Test 13
AF Analyzer Residual Noise
Performance Test 13
The purpose of this test is to verify that the Test Set meets the
specification limits in PTR (Performance Test Record) Table 9-13, “AF
Analyzer Residual Noise Test 13 Record,” on page 263. The AC level of
the audio input is measured with no signal source connected.
Figure 8-18 Setup
Procedure
1. 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 15kHz LPF.
e. Set the Audio In Lo field to Gnd.
f. Set the Detector field to RMS.
2. Measure the AC level (residual noise) on the Test Set and compare
the measured level to the limits shown in the Performance Test
Record.
3. Set the Filter 2 field to >99kHz LP.
4. Measure the AC level (residual noise) on the Test Set and compare
the measured level to the limits shown in the Performance Test
Record.