ADVANTEST R3131

R3131 Spectrum Analyzer Operation Manual
2.3 Measurement Examples
2-73Apr 10/98
Figure 2-68 Measuring the Video Carrier Level
Measuring the audio carrier level
11. Press MKR, 9, 5, ., 7, 5 and MHz.
The marker is displayed at 95.75 MHz on the trace.
This marker level is called video carrier level A (dBmV).
Figure 2-69 Measuring the Audio Carrier Level
12. Calculate the VA ratio using the following formula.
VA ratio (dB) = Video carrier level V (dBµV) - Audio carrier level A (dBµV)