TB 9-6625-152-24
Figure 1. Audio Frequency Meter.
Table 19. Audio Frequency Meter.
Function generator
Test instrument
Output frequency
Indication limits (Hz)
(Hz)
Min
Max
20
19.8
20.2
1k
999.8
1000.2
20 k
19.998 k
20.002 k
(7) Set outputs to minimum and disconnect equipment setup.
b. Adjustments. Perform adjustments in Section IV below.
19. AF Distortion and Sinad Meter
a. Performance Check
(1) Connect equipment as shown in figure 2 below.
(2) Set multimeter for AC voltage measurement in AUTO range.
Figure 2. AF distortion and Sinad Meter.