• Outdoor Bi-directional AGC Trunk Amplifier
  • Model Number: SA812C
  • Brand: SOFTEL
  • MOQ: 1PCS
 

 
 
Summary
 
SA812C1/SA812C2 Field Bidirectional AGC Amplifier is a new high gain amplifier. Adopt optimized circuit design and scientific and rational process. High performance AGC control circuit inside is useful for stable gain and low distortion. It's the best choice for large and medium-sized bidirectional CATV transmission network.
 
 
Performance Characteristic
 
●PHILIPS or NEC low noise push pull amplifier modules or GaAs push pull amplifier modules are used as forestage of forward path. PHILIPS or NEC Power-Double gallium arsenide amplifier modules or GaAs amplifier modules are used as output stage. Output level is stable and nonlinear index is good.(Power-Double gallium arsenide amplifier modules or GaAs amplifier modules are independent in SA812C1.)
●PHILIPS return amplifier modules are used as backward path. Its distortion is little and SNR is high.
●It is more convenient to debug, because of plug-in (or adjustable) duplex filters, plug-in fixed (or adjustable) equalizers, plug-in output splitters and scientific and rational on-line detection ports.
●Optimal AGC control circuit cause precise control and steady link signal.
 
 
Block Diagram




Technique Parameter

Item
Unit
Technique Parameter
SA812C1-XX
SA812C2-XX
Downlink Transmission Path
Frequency Range
MHz
53/85~862
53/85~862
Rated Gain
dB
OUT1≥36
OUT2≥36
(FP-204 Output)
OUT1≥40
OUT2≥30
(FZ-110Output)
≥38
Minimum Full Gain
dB
≥36
≥38
Rated Input Level
dBμV
72
Rated Output Level
dBμV
106/108
108
Flatness in Band
dB
±0.75
Noise Figure
dB
≤10
Return Loss
dB
≥16
Attenuation Range
dB
1-18(Fixed insert,1dB stepping)
Equilibrium Range
dB
1-15(Fixed insert,1dB stepping)
C/CTB
dB
≥67(Note 1)
C/CSO
dB
≥69(Note 1)
AGC Pilot Carrier Frequency
MHz
168.25(Or up to users)
AGC Characteristic
dB
±4(Input)/±0.5(Output)
Group Delay
ns
≤ 10  (112.25 MHz/116.68 MHz)
Signal to Hum Ratio
%
< 2
Gain Stability
dB
-1.0 ~ +1.0
Uplink Transmission Path
Frequency Range
MHz
5 ~ 42/65
Rated Gain
dB
OUT1≥20
OUT2≥20
FP-20 Output
OUT1≥22
OUT2≥12
FZ-11 Output
≥20
Minimum Full Gain
dB
≥20
≥22
≥20
Maximum Output Level
dBμV
≥110
Flatness in Band
dB
±0.75
Noise Figure
dB
≤12
Return Loss
dB
≥16
Carrier to Second-order Inter-modulation Ratio
dB
≥ 52 (Test Condition: Output level is 110dBuV,
Measurement point,
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 Interface
dB
-20±1
Supply Voltage
V
AAC135 ~ 250VBAC35 ~ 90V
Impulse Withstand 
Voltage(10/700μs)
kV
> 5
Power Consumption
W
≤25
≤30
Dimensions
mm
250(L)* 205(W)
* 125(H)
290(L)*220(W)* 125(H)