10
English
SAT
The typical output SAT signal level to the OPT-RX QUAD MINI is:
•
64dBµV for transponders with an optical level of -14dBm input to the receiver (21dB of optical attenuation)
•
76dBµV for transponders with an optical level of -8dBm input to the receiver (15dB of optical attenuation)
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 MINI
Shown below are some of the reference levels of the signals output to the receiver OPT-RX 4 MINI:
TV (DVB-T/CATV)
The overall output power is -27dBm (82dBµV) with 21dB of optical attenuation which means that the fewer multiplexes that are
transmitted, the better the output level and quality.
RF output level per MUX
No. of Muxes
Receiver optical Input -8dBm
Receiver optical Input -14dBm
40
79dBµV
66dBµV
16
82dBµV
70dBµV
8
85dBµV
73dBµV
4
88dBµV
76dBµV
Table 2: Indications of output levels to the OPT-RX 4 MINI – TV signal
Note: 1dB optical equals 2dB at electric level (RF).
SAT
The typical output SAT signal level of the OPT-RX DT QUATTRO is 88dBuV @ -14dBm (-35dBc 2 tones), that corresponds to:
•
73 dBµV for transponder with an optical level of -14dBm input to the receiver (21dB of optical attenuation)
•
85 dBµV for transponder with an optical level of -8dBm input to the receiver (15dB of optical attenuation)
FM, DAB and DVB-T
The FM and DAB signal levels must be 10dB lower than DVB-T.
5. TYPICAL INSTALLATION EXAMPLES
Some example diagrams are available at the end of the manual and on the website www.fracarro.com
6. TECHNICAL SPECIFICATIONS
OPT-RX QUAD MINI
Fracarro code
270665
Optical input
No.
1 FC/APC
Input DC Optional
No.
1 input power (12V/18V)
RF outputs
No.
4 universal (TERR + SAT)
OPTICAL INPUT
Optical connector
FC/APC
Optical return loss
dB
>45
Optical power (min - max)
dBm
-8 to -14
