Datasheet

Optical head-end platform
169
LWS 151
Optical transmi tter
for conversion of electrical CATV input signals, as QAM, FM or AM-VSB, two optical
output signals in the third optical window (1550 nm)
low-noise DFB-laser-diode ( output power 15 dBm)
two inputs for different input levels
slope, gain and output power can be adjusted electronically
further types 1550 nm per request
LWS
input low
input high
output
RS 485
TP 1
TP 2
Type LWS 151
Order number 212 151
EAN-code 4026187240592
RF input parameters
Frequency range [MHz] 5…1000
Input level
Inputs single / coupled [dBµV] 79 / 93
Gain adjustment [dB] 0…24
Slope adjustment [dB] - 2…16
Impedance [W] 75
Return loss on RF terminals [dB] >20 (bei / at 47 MHz); - 1,5 dB / oct; min. 15
Testing point 1 attenuation [dB] 20
Testing point 2
AC voltage for optical
Output power indication
[dBµV]
[V/mW]
80 + 2Δ P opt ± 2,0 dB
@ OMI = 5% (AC)
0,1 +/- 0,02 (DC)“
Optical output parameters
Optical output power / wavelength [dBm] 15 / 1550 nm
Attenuation optical output power [dB] 0… -3
Optical return loss [dB] > 45
C/N [dB] ≥ 51 (Cenelec 42 channels; OMI = 4%; 20 km opt. fi bre; P opt, in = 0 dBm)
CSO [dBc] ≥ 60 (Cenelec 42 channels; OMI = 4%; 20 km opt. fi bre; P opt, in = 0 dBm)
CTB [dBc] ≥ 62 (Cenelec 42 channels; OMI = 4%; 20 km opt. fi bre; P opt, in = 0 dBm)
Common data
Voltage supply [V~] 100…240
Power consumption [W] ≤ 11,5
Ambient temperature [°C] 0…40