| Description
OPCA-1200CEAM series outdoor modular bidirectional trunk amplifier is a new high gain amplifier. Adopt mature and optimized circuit design, scientific and rational internal process, high quality materials, to ensure the stable gain and low distortion. It's the first choice equipment for large and medium-sized CATV bidirectional transmission network.
Product feature
(1) Forward path pre-stage adopts the newest high index imported low noise push-pull amplify module or GaAs push-pull module, and the output stage adopts an independent newest high index imported power double amplify module or GaAs amplify module, to achieve good nonlinear index and stable output level.
(2) Return path adopts the newest high index imported reverse dedicated amplify module, to achieve low distortion and high SNR.
(3) It is more convenient to debug because of the plug-in duplex filter, fixed equalizer and attenuator (EQ and ATT both adopt fixed attenuator to adjust the equilibrium and attenuation), plug-in output tap or splitter, and the scientific and reasonable on-line detection ports.
(4) The output level mode is AGC or MGC optional, it is more convenient.
(5) The equipment can long time continuous work steadily under outdoor bad environmental condition. Because of the aluminum waterproof housing, high reliability switching power supply and strict lightning protection system. (6) The structure adopts embedded modular design, easy to maintain, replace and debug.
Technical data
|
Item |
Unit |
Technical Parameter |
|
Forward Path |
|
Frequency range |
MHz |
87~862/1003 |
|
Rated gain(@FZ110) |
dB |
30 |
34 |
36 |
38 |
|
Min full gain(@FZ110) |
dB |
≥30 |
≥34 |
≥36 |
≥38 |
|
Rated Input Level |
dBμV |
72 |
|
Rated Output Level |
dBμV |
108 |
|
Flatness In Band |
dB |
±0.75 |
|
Noise Figure |
dB |
≤10 |
|
Return Loss |
dB |
≥16 |
|
ATT |
dB |
1-18 (Fixed, 1dB stepping, selectable) |
|
EQ |
dB |
1-15 (Fixed, 1dB stepping, selectable) |
|
C/CTB |
dB |
67 |
Test condition: 84 channels. |
|
Output level: 85MHz/750MHz/1003MHz |
|
C/CSO |
dB |
65 |
100dBuV/105dBuV/108 dBuV |
|
Group Delay |
ns |
≤10 (112.25 MHz/116.68 MHz) |
|
Signal to Hum Ratio |
% |
< 2 |
|
Gain Stability |
dB |
-1.0 ~ +1.0 |
|
Return Path |
|
Frequency Range |
MHz |
5 ~ 65 |
|
Rated Gain |
dB |
≥22 (@FZ110) |
|
Min Full Gain |
dB |
≥22 (@FZ110) |
|
Flatness In Band |
dB |
±0.75 |
|
Noise Figure |
dB |
≤ 8 |
|
Return Loss |
dB |
≥ 16 |
|
Carrier to Second Order Intermodulation Ratio |
dB |
≥ 52 |
Test condition: output level 110dBμV, Test points: F1=10MHz,F2=60MHz, F3=F2-F1=50MHz |
|
Group Delay |
ns |
≤ 20 (57MHz/59MHz) |
|
Signal to Hum Ratio |
% |
< 2% |
|
General Characteristic |
|
Characteristic Impedance |
Ω |
75 |
|
Test Port |
dB |
-20±1 |
|
Power Voltage |
V |
A: AC (135 ~ 250)V; B: AC (45 ~ 90)V |
|
Impulse Withstand Voltage (10/700μs) |
kV |
> 5 |
|
Power Consumption |
W |
≤22 |
|
Dimension |
mm |
295 (L) × 210 (W) × 150 (H) |
Note: The parameters of this manual are measured when the output module adopts NEC. Use other module; the indexes will be a little different.
Block Diagram
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