6
Optical input level to the receiver
The operational optical input level of the receiver is -15...-5 dBm. In this region OLC (optical level control) is working and
provides for xed RF output levels.The optical output level from transmitter is 6dBm. It means, that possible optical atteniuation
range from transmitter to receiver is 11...21 dB.
RF output levels from the receiver
The receiver has optical level control (OLC), which allows to have a xed level of RF output signals at dierent level of
input optical signal. OLC range is -15....-5 dBm. RF output level remains constant while optical input power uctuates in
mentioned region. Hovewer, RF output level depends on number of transmitted signals through the bre.
SAT
The RF signal level at receiver SAT outputs depends on RF signal level at transmitter inputs and optical input power at
receiver input. By typical application conditions
RF level at the transmitter input 60...80 dBµV per transponder (75...95 dBµV total power).
Optical input level at the receiver -15...-5 dBm.
Output RF levels of the receiver are:
Receiver with quatro outputs (without letter M (OR401, OR501W)) - typ. 80 dBµV.
Receiver with quad outputs (with letter M (OR401M, OR501MW)) - typ. 75 dBµV.
DTT
The RF signal level at receiver DTT output depends on RF signal level at transmitter input, optical input power at receiver
input and number of channels. By typical application conditions
RF level at the transmitter input 60...80 dBµV per transponder (69...89 dBµV total power).
Optical input level at the receiver -15...-5 dBm.
Number of channels 8.
Output RF level of the receiver is:
Receiver with quatro outputs (without letter M (OR501W)) - typ. 80 dBµV.
Receiver with quad outputs (with letter M (OR501MW)) - typ. 75 dBµV.
If the actual number of channels is not 8, set the switch on transmitter in appropriate position (see description with table above).
Type OT401 OT501W
Satellite inputs
Number of inputs 4
Bandwidth 950-1950 MHz (VLo, HLo); 1100-2150 MHz (VHi, HHi)
Input return loss / impedance > 10 dB / 75 Ω
RF input level (AGC range) for 30 transponders 60-80 dBµV (per transponder); 75-95 dBµV (total level)
LNB feeding V,Lo and V,Hi - 13.5 V; H,Lo and H,Hi - 18 V; 350 mA total
Terrestrial input
Bandwidth - 47-862 MHz
Input return loss / impedance - > 10 dB / 75 Ω
RF input level (AGC range) for 8 transponders -60-80 dBµV (per transponder)
69-89 dBµV (total level)
Number of transponders (switcable) - 1...16
Preamplifier feeding (switchable) - 9 V 100 mA max.
Optical output
Wavelength SAT & Terr 1310 nm 1310 nm SAT & 1550 nm DTT
Optical output power 6 dBm 6 dBm SAT; 6 dBm DTT
Optical return loss > 45 dB
Laser type FP
Main characteristics
Supply voltage 12 V - 24 V
Power consumption without external load 9 W max. 11 W max.
Power consumption with max. external load 15 W max. 18 W max.
Operating temperature range -10 ÷ + 40 oC
Dimensions/Weight (packed) 108x190x54 mm/1.44 kg
Technical specications
