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Email1: info@optictrans.com
Email2: kally@optictrans.com
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OPCA-8338C Outdoor Bi-directional AGC Trunk Amplifier
   Content
Description
OPCA-8338C outdoor bi-directional AGC trunk amplifier is new developed and high gain amplifier. It is adapts optimization circuit design, with scientific and reasonable internal process and very good material and also built-in high performance AGC control circuit, so as to ensure the stability gain and low distortion. It is the first choice of large and medium-sized two-way CATV transmission network equipment.
 
Product feature
(1) Forward path adapts import PHILPS or NEC low noise push-pull amplify module or GaAs push-pull module, the output adapts two independent PHILPS or NEC double power amplify module or GaAs amplify module that made to excellent nonlinear index and stability output level; Reverse path adapts PHILIPS return amplify module, low distortion and high SNR.
(2) Plug-in diplexer, plug-in fixed (or adjustable) EQ, fixed (or adjustable) ATT, plug-in output tap and with online testing port that made to more convenience project adjusting.
(3) Built-in optimization high performance AGC control circuit to ensure the circuit signal processing stability.
(4) Waterproof aluminum housing, high reliability switch power, strictly anti-thunder system that make sure the equipment can long time stability working under field harsh environment.
 
Technical data
Item
Unit
Parameters
Forward Path
Frequency Range
MHz
53/85 ~ 860
Rated Gain
dB
OUT1/2≥38 (@FZ110)
Min Full Gain
dB
≥38 (@FZ110)
Standard Input Level
dBμV
72
Standard Output Level
dBμV
108
Flatness In Band
dB
±0.75
Noise Figure
dB
≤ 10
Return Loss
dB
≥ 16
ATT
dB
1-18(Fixed plug,1dB step) (Specify by user )
EQ
dB
1-15(Fixed plug,1dB step) (Specify by user )
C/CTB
dB
69
Test condition: 79 channels. Output level: 53/550/750MHz, 99/105/108 dBμV.
C/CSO
dB
67
AGC Pilot Frequency
MHz
168.25 (or named by user)
AGC Characteristic
dB
±4 (Input)/±0.5 (Output)
Group Delay
ns
≤ 10  (112.25 MHz/116.68 MHz)
Signal to Hum Rate
%
< 2
Gain Stability
dB
-1.0 ~ +1.0
Return Path
Frequency Range
MHz
5 ~ 42/65
Rated Gain(@FZ110)
dB
12
16
20
24
Max Output Level
dBμV
≥ 110
Flatness In Band
dB
±0.75
Noise Figure
dB
≤ 12
Return Loss
dB
≥ 16
Carrier to Second Order Intermodulation Ratio
dB
≥ 52
Test condition: output level 110dBμV,Test point: F1=10MHz,F2=60MHz, F3=F2-F1=50MHz
Group Delay
ns
≤ 20  (57MHz/59MHz)
Signal to Hum Rate
%
< 2
General Characteristic
Characteristic Impedance  
Ω
75
Test Port
dB
-20±1
Power Voltage
V
A: AC (135 ~ 250) V or B: AC(35 ~ 90) V
Impulse Withstand Voltage(10/700μs)
kV
> 5
Power Consumption
W
30
Dimension
mm
289*218*123
 
Block Diagram
 
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