Fracarro 270662, Operating Instructions Manual, Page: 10 / 16

10
En
gl
ish
FM, DAB and DVB-T
The FM and DAB signal levels must be 10dB lower than DVB-T.
The signal levels to the user sockets must respect the set points given in the EN50083-7 standard (DVB-T: 45-74dBµV, SAT: 47-
77dBµV). In certain cases the RF output signal from the receiver, or if possible the input optical signal, will have to be attenuated
by means of passive components such as optical line faders.
OPT-RX 4 MICRO
Shown below are some of the reference levels of the signals output to the receiver OPT-RX 4 MINI:
Table 2: Indications of output levels to the OPT-RX 4 MICRO.
Note: 1dB optical equals 2dB at electric level (RF).
FM, DAB and DVB-T
The FM and DAB signal levels must be 10dB lower than DVB-T.
Some example diagrams are available at the end of the manual and on the website www.fracarro.com
5- TYPICAL INSTALLATION EXAMPLES
OPT-RX QUAD MICRO
Fracarro code 2706
Optical input N.° 1 SC/APC
Input Dc Optional N.° 1 Input power 12-18 V
RF Outputs N.° 4 Universal (TV+SAT)
Optical Input
Optical connector SC/APC
Optical Return Loss dB >45
Optical power (min ÷ max) dBm -8 to -14
RF output level for MUX RF output level for TRANSPONDER
No. of MUX Optical input power
-14 ÷ -8 dBm
Numero TP Optical input power
-14 ÷ -8 dBm
40 66 to 78 40 68 to 80
16 70 to 82 16 72 to 84
8 73 to 85 8 75 to 87
4 76 to 88 4 78 to 90