Analogue Tv: Measuring The Video / Audio Ratio (V/A); Analogue Tv: Measuring The Fm Deviation - Promax US TV EXPLORER II Manual De Uso

USER'S MANUAL. US TV EXPLORER
90 dBμV + 10 log 10 = 100 dBμV
Observe that in this case, loss of tuning by overload of the RF input may occur besides
other effects such as tuner saturation and generation of intermodulation products that
may mask the spectrum visualization.

5.14.2 Analogue TV: Measuring the Video / Audio ratio (V/A)

In the Video/Audio measurement mode, on the screen appears the following
information:
0
FREQ:
CH:
Figure 25.- Measurement of the video/audio rate.
In addition to the video carrier / audio carrier level ratio (16.2 dB in previous
figure) it also shows the frequency or channel, depending on the tuning mode selected,
the carrier level and the Carrier/Noise ratio.

5.14.3 Analogue TV: Measuring the FM deviation

The US TV EXPLORER
analogue carrier in FM. This function allows visualizing frequency peak deviation for FM
carrier signals.
Once this DESV FM measurement mode is activated will appear the following
information on screen:
11/2013
II
10 20
168.25 MHz LEVEL:
S10 C/N
» V/A:
FM DEV:
II measures the deviation in frequency of any modulated
30 40
78.2 dBµV
40.1 dB
16.2 dB
- - - kHz
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