R.V.R. Elettronica TEX150, User Manual

Page: 19 / 110

TEX150
13 / 40 User Manual Rev. 4.0 - 27/07/01
figure 5.3
Adjust the stereo encoder to obtain just the 19 KHz subcarrier output and ensure
the total absence of signals on the left and right inputs of the encoder.
Adjust the output level of the encoder to obtain the correct level as displayed on
the analog meter of the TEX150. Inject audio signals into the left and right inputs
of the encoder and adjust the sensitivity of the input to obtain a peak reading of
MAX=75KHz with both channels enabled.
5.5 Monophonic Transmission
Connect the signal source (audio mixer, receiver, compressor etc.) to the MONO
input (this input is unbalanced), and select the desired INPUT LEVEL.
figure 5.4
Adjust the signal level of the equipment connected to the TEX150 (with the audio
signal present) for a peak reading of DEVIATION MAX 75 KHz.
NOTE: The international standards permit a maximum deviation (DEV MAX) of 75
KHz for frequency modulated, radiophonic transmissions. Exceeding this limit will
only result in the degradation of signal quality. In the case of mono transmissions,
the stereo input is available for frequencies between 15 KHz and 100 KHz (i.e.
subcarriers for SCA, RDS etc.).