Datasheet

Optical head-end platform
168
LWS 61
Optical transmi tter
for conversion of electrical CATV input signals, as QAM, FM or AM-VSB, two optical
output signals in the second optical window (1310 nm)
low-noise DFB-laser-diode ( output power 6 dBm)
two inputs for different input levels
slope, gain and output power can be adjusted electronically
further types 1310 nm per request
LWS
input low
input high
output
RS 485
TP 1
TP 2
Type LWS 61
Order number 212 201
EAN-code 4026187240318
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] 6 / 1310 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