Customization: | Available |
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Type: | CATV Equipment |
Function: | Signal Transmitting Device |
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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 doubler 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.
Item | Unit | Technical Parameter | ||||
Forward Path | ||||||
Frequency range | MHz | 47/85 ~860/1003 | ||||
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 | 106/108 | ||||
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: 79 channels. Output level: 53MHz/550MHz/750MHz. 99dBuV/105dBuV/108 dBuV |
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C/CSO | dB | ≥69 | ||||
AGC Pilot Frequency | MHz | 168.25 (Or specified by the user) | ||||
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 |
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 Inter-modulation Ratio | dB | ≥ 52 | Test condition: output level 110dBμV, Test points: f1=10MHz, f2=60MHz, f3=f2-f1=50MHz |
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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(35 ~ 90)V | |||
Impulse Withstand Voltage (10/700μs) | kV | > 5 | |||
Power Consumption | W | 22 | |||
Dimension | mm | 260(L)* 200(W)* 130(H) |