2-30 Subject to Export Control, see Cover Page for details.
F. Audio Level Meter Verification (cont)
9. Set the Load field to 150 (Ω ).
10. Set the Function Generator as follows (use the Digital Multimeter to set level ± 10 mV):
FIELD SETTING
Level 1 Vrms
Freq 1 kHz
11. Record the Digital Multimeter (Voltmeter) reading and the level displayed on the Test Set.
12. Verify the level displayed on the Test Set is within ± 5% of the reading on the Digital
Multimeter (Voltmeter).
13. Set the Load field to 600 (Ω ).
14. Set the Function Generator as follows (use the Digital Multimeter to set level ± 10 mV):
FIELD SETTING
Level 1 Vrms
Freq 1 kHz
15. Record the Digital Multimeter (Voltmeter) reading and the level displayed on the Test Set.
16. Verify the level displayed on the Test Set is within ± 5% of the reading on the Digital
Multimeter (Voltmeter).
17. Set the Load field to 1K (Ω ).
18. Set the Function Generator as follows (use the Digital Multimeter to set level ± 10 mV):
FIELD SETTING
Level 1 Vrms
Freq 1 kHz
19. Record the Digital Multimeter (Voltmeter) reading and the level displayed on the Test Set.
20. Verify the level displayed on the Test Set is within ± 5% of the reading on the Digital
Multimeter (Voltmeter).
21. Set the Load field to Div10 (Ω ).
22. Set the AF Generator Level to 3 Vrms.
23. Record the Digital Multimeter (Voltmeter) reading and the level displayed on the Test Set.
24. Verify the level displayed on the Test Set is within ± 5% of the reading on the Digital
Multimeter (Voltmeter).
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