Terra OD007H, Руководство пользователя, Страница: 3 / 3

Technical characteristics
Optical input wave lenght for receiver 1540-1560 nm
wave lenght pass 1260-1360 nm & 1480-1500 nm
connector see ordering information
insertion loss < 0.4 dB
isolation > 30 dB
return loss COM > 50 dB
return loss BOSA > 40 dB
input level * (AGC range) -15 ÷ 0 dBm
noise current density ≤ 7.0 pA/√Hz
RF output frequency range 47-2400 MHz
impedance 75
Ω
return loss ≥ 14 dB at 40 MHz -1.5 dB/oct., but not less 10 dB
frequency response 3 dB (precorrection) ± 1.5 dB
Output level (AGC range) for 30 SAT IF transponders 70 dBµV** (per transponder); 85 dBµV (total)
Supply voltage 10 V ÷ 20 V
Current consumption 70 mA max.
Operating temperature range -20
o
÷ + 50
o
C
Dimensions/Weight (packed) 90x27x19 mm/0.08 kg
Installation instructions
Read the product description and safety instruction first.
Fiber installation should be done very carefully. Bending radius of fibers must be not less 25 mm. An optical connector and
adaptors should be cleaned before connecting them. Power on the receiver after all cables have been connected correctly.
Operating
The receiver output level indicator formed from LED:
Glowing
green : output level constant 70 dBµV (AGC range), optical input level is in range -15 ...0 dBm;
Glowing yellow : level too low < 70 dBµV, input signal is out AGC range;
Glowing red : level too high > 70 dBµV, input signal is out AGC range.
* optical input signal 4.9% OMI, 1550 nm, 30 SAT IF transponders
** at frequency 1300 MHz
k
Powering from STB (Set-Top Box).
Draugystes str. 22, LT-51256 Kaunas, Lithuania, tel.: +370 37 - 31 34 44, fax: +370 37 - 31 35 55
E-mail: sales@terraelectronics.com , http://www.terraelectronics.com
STB
RF
DC
OPTICAL
Optical receiver OD007H
10-20V
70mA
DC IN
DC IN
RF OUT
high
OK
low
RF
signal
level