TEX3500LCD
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USer Manual
Rev. 2.0 - 27/01/20
5.1.5.5 Changing the
Power Good
alarm threshold
Change Forward Power Good alarm setting
PgD
from the
Fnc
menu as desired
(factory setting is 50%).
5.1.5.6 Setting equipment I
2
C address
Change the
IIC
address in the
MIX
(Miscellaneous) menu as desired (factory
setting is 01).
5.1.5.7 Adjustments and calibration
The only manual adjustments are the level adjustments and the audio mode
adjustment.
The rear panel holds the trimmers for all transmitter inputs. Trimmer identification
is printed on the rear panel. Input sensitivity can be set within the limits set out in
the tables below through the trimmers:
Input sensitivity in Mono mode:
Ingresso Figura 6.2 Trimmer
Sensibilità
Nota
SCA1/RDS
[9]
[13]
- 8 ÷ +13 dBm Livello di ingresso per 7,5 kHz di
deviazione (-20 dB)
SCA2
[8]
[11]
- 8 ÷ +13 dBm
MPX
[10]
[12]
-13 ÷ +13 dBm Livello di ingresso per 75 kHz di
deviazione (0 dB)
Mono
[37]
[36]
-13 ÷ +13 dBm
Input sensitivity in Stereo mode:
Ingresso Figura 6.2 Trimmer
Sensibilità
Nota
SCA1/RDS
[9]
[13]
- 8 ÷ +13 dBm Livello di ingresso per 7,5 kHz di
deviazione (-20 dB)
SCA2
[8]
[11]
- 8 ÷ +13 dBm
MPX
[10]
[12]
-13 ÷ +13 dBm Livello di ingresso per 75 kHz di
deviazione (0 dB)
Left
[37]
[36]
-13 ÷ +13 dBm
Right
[15]
[32]
-13 ÷ +13 dBm
When setting input sensitivity, please consider that the default menu reports
instantaneous modulation level and an indicator provides a 75 kHz reading. To
ensure correct adjustment, apply a signal with the same level as user’s audio
broadcast maximum level and then adjust using the trimmer until instantaneous
deviation matches the 75 kHz reading.
To set subcarrier input levels, you may use the same procedure and option “x10”
available in the Fnc menu. With this option, modulation level is multiplied by a factor
of 10, which means that default menu bar meter reflects a 7.5 kHz deviation.
A special menu with separate indications of Left and Right channel levels and
relating indicators of nominal levels for maximum deviation (75 kHz) is provided.
