Reverse Path Amplifier
Reverse Path Amplifier
The age of high-speed data communications and multimedia application have dawned on cable television. It has brought with it a myriad of services such as high-speed data, video on demand, IP telephony, status monitoring, impulse pay-per-view and internet access to name a few. A cable plant must be two-way ready to carry this high-speed data traffic from a variety of sources.
Feature
Technique Parameter
Feature
- Return amplifiers are employed to carry the reverse path signals (5 – 42 MHz)(signal as per customer demand)
- Diplex filters are used to separate the reverse signals from the forward path.
- A diplex filter is a Low-pass and High-pass combination.
Technique Parameter
Item | Unit | Technique Parameter |
Forward Path | ||
Frequency Range | MHz | 52 ~ 862 |
Rated Gain | dB | 28 |
Minimum Full Gain | dB | ≥28 |
Rated Input Level | dBµv | 72 |
Rated Output Level | dBµv | 100 ~ 102 |
Fitness in Band | dB | 1 |
Noise Figure | dB | ≤10 |
Return Loss | dB | ≥14 |
C/CTB | dB | ≥58 |
C/CSO | dB | ≥56 |
Signal to Hum Ratio | % | <2 |
Gain Stability | dB | -1.0 ~ + 1.0 |
Return Path | ||
Frequency Range | MHz | 5 ~ 40/52 |
Rated Gain | dB | 12 ~ 18 |
Minimum Full Gain | dB | ≥18 |
Rated Output Level | dBµv | ≥110 |
Fitness in Band | dB | ±0.75 |
Noise Figure | dB | ≤12 |
Return Loss | dB | ≥16 |
Carrier to second order Inter modulation ratio | dB | ≥52 |
Signal to Hum Ratio | % | <2 |
General Characteristics | ||
Characteristic Impedance | ῼ | 75 |
Supply Voltage | V | A: AC (135 ~ 250); |
Power Consumption | W | 20 |
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