USER’S MANUAL. TV EXPLORER II/II+
12/2013
Page
49
En
g
lis
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5.14.3
Analogue TV: Measuring the FM deviation
The
TV EXPLORER II / II+
measure the deviation in frequency of any modulated
analogue carrier in
FM
. This function allows visualising frequency peak deviation for
FM
carrier signals.
Once this
DESV FM
measurement mode is activated will appear the following
information on screen:
42.3
0.7
1.6
41
dBµV
dB
dB
kHz
MHz
103.80
0 50 75 100
FREC:
CAN:
NIVEL:
C/N
V/A:
:
» DESV FM
Figure 24.-
FM
carrier peak deviation.
On the screen appears the deviation peaks in order to observe if they are within a
suitable range limit valid for both, the receiver and the transmitter in the transmittting
system.
5.14.4
Analogue FM: Measuring the Level and demodulating signal
Press the
Measurement Configuration
[17] key to accede to the
CONFIGURATION
menu and turn the rotary selector [1] in order to select the analogue
FM signal.
In the
analogue FM
measurement mode, the
TV EXPLORER II / II+
display
works like an analogue level indicator showing the signal level present in the input.
FREQ:
CH:
» LEVEL:
FM DEV:
56.6
53
dBµV
kHz
MHz
103.80
10 30 50 70 90 110 130
Figure 25.-
FM analogue signal measurement
