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AST2500 Fiber Satellite CWDM Optical Transmitter

Ascent’s AST2500 series is a compact fiber satellite and DTT optical transmitter suitable for satellite optical distribution network systems. The device receives the signal from 4 optical LNBs and distributes it over a single optical fiber, to the different users, using the CWDM transmission wavelength.

    Designed for Satellite Optical Systems                            

    Wide operating frequency range: 47 MHz to 860 MHz / 950 MHz to 2150 MHz

    Excellent Linearity and flatness

    Single-mode fiber high return loss

    Build-in GaAs amplifier active devices

    Ultralow noise technology

    Build-in CWDM, using DFB coaxial small package laser

    Outputs 13/18V, 0/22 kHz to LNB working

    A LNB mode switch offers the possibility to use either Quattro or QUAD LNB

    Red LED for power indication

    Small size and easy installation


Item

Description

Note

Customer Interface



RF Connector

F‑female


Optical Connector

SC/APC


Power Supply

F‑female


Optical Parameter



Optical Return Loss

≥45 dB


Output Optical Wavelength

1510 nm

LV‑TX


1530 nm

LH‑TX


1550 nm

HV+Terr.‑TX


1570 nm

HH‑TX

Output Optical Power

3 mW

≥5dBm

Optical Fiber Type

Single‑mode fiber


Terr.+SAT‑IF Parameter



Input Impedance

75 Ω


Terr. Frequency Range

47 MHz to 860 MHz


Terr. Flatness

±0.75 dB


Terr. Input Level

75 dBµV ± 5 dBµV


Terr. Return Loss

≥14 dB


CNR

≥52 dB


CSO

≥62 dB


CTB

≥65 dB


SAT‑IF Frequency Range

950 MHz to 2150 MHz


SAT‑IF Return Loss

≥10 dB


SAT‑IF Flatness

±1.5 dB


SAT‑IF Input Level

70 dBµV ± 5 dBµV


LNB Power supply

13 V / 18 V


LNB power supply current

500 mA (max.)


22 kHz Accuracy

22 kHz ± 4 kHz


Other Parameter



Power Supply

20 VDC


Power Consumption

<10 W


Dimensions

195 mm × 128 mm × 40 mm



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