SPECIFICATION
· Designed with imported high frequency components to provide high performance.
· Aluminum shell provides fine shielding properties and strong capacity of resisting disturbance.
· Providing manual gain control to adjust suitable signal.
| ITEM | PARAMETER |
| Frequency range(MHz) | 45~860 |
| Nominal gain(dB) | 20±2 |
| Flatness in band(dB) | ±0.75 |
| Max output level(dBμV) | 107 |
| Nominal input level (dBμV) | 72 |
| Gain adjustment range(dB) | 0~10 |
| Slop preset(dB) | 5 |
| Noise factor(dB) | ≤5 |
| Return loss(dB) | ≥9 |
| power supply | 220V~ 50-60Hz |
| power consumption(W) | 1 |
| Number of outputs | 2 |
| Measurements: | 83*55*32mm |
Installation
1.Please connect CATV amplifier correctly based on the installation map on the back of packing;The power indicator will be on when you turn on the power.
2.Gain adjustment:If the input voltage is too low, it will cause the noise ratio worsening;If the input voltage is too high,It will cause distortion;The input voltage will keep in 94-102 dBμV to use the gain adjustment.
3.Isostatic adjustment:In order to compensate the level difference of high and low frequency caused by cable transmission,Please use the isostatic adjustment to keep the CATV amplifier output signal flat.
( the attenuation will be four times different between 45-750MHz, if 45MHz attenuates 5dB, 750MHz will attenuate 20dB.)
4.Please keep away from TV set as possible as you can when you install CATV amplifier( the distance is usually 5m).If you install it close to CATV splitter, please make sure the signal source has high signal ratio;The image is clearer if you install it on the less attenuation place.
5.After installation, if you find out the poor result, please check whether the power, connector, splitter and tap connect well.
6.If the image occurs twill interference caused by too high output level after signal amplification,Please adjust the gain button by anti-clockwise (focus on adjustable CATV amplifier),The image will be clearer after decreasing the output level appropriately.
Questions about seebest company
Q:Are you a manufactory or a trading company?
A:We are a manufactory, and established in 1999.
Q:Why your company seebest have so many kinds of products?
A:We own more than 2000 employees, and have 8 branches to make different kinds of products
Questions about the CATV amplifier
Q:Why need the amplifier?
A:1.There is loss during the transmission, you need the amplifier to compensate the loss
2.If you have multi-tvs in your home, you need the amplifier to splitter the signal
And to compensate the loss caused by splitting
Q:How do we know we need amplifier?
A:When you TV reception have the following appearance, indicate that you need the amplifier
You TV reception is grainy or snowy.
Overall picturequality does not look great
The HDTV signal keeps dropping out
The cable modem loss sync
Q:Why sometimes the signal quality with amplifier are even worse than without amplifier?Is it the quality problem of the amplifier?
A:Usually it is not the quality problem of the amplifier, it is because the signal level is too high and distortion.At this situation, you just need to adjust the gain to be lower.
Q:Can the amplifier improve the signal quality under any condition
A:No, the amplifier should be used at the correct way, the signal input should not less than 55dBuV and not higher than 85dBuV, if the input signal level is too low or too high, the signal quality can not be improve well.Or if the input signal is badly distortion, the quality can not be improved
Q:Is the gain the higher the better?
A:No, the best signal level is around 75dBuV, to choose the amplifier with suitable gain is the best.If you choose a high gain amplifier, then the output level will be too high, signal may become distortion.
Seebest was created in 1999, just as TV signal amplifier began its transmissions. From a small factory employing 56 staff for the first year, the seebest Corporation has grown to include over 2000 employees and have our own 50, 000m2 factory
Seebest is dedicated to manufacturing, R&D and marketing, our products range covers thousands of different CATV amplifiers, CATV splitters, socket, lights, LED flashlight, cable etc. In addition to our complete selection, reliable quality control is why long-term repeat customers make up 70% of our business. Using HP testing equipment, we inspect each production (100% inspection) before delivery. We treat every order with the same meticulous attention to detail however the order is big or small.
At our ISO 9001: 2008 certified factory, we have 30 production lines that turn out up to 1 million units monthly to fill bulk purchase request. We also welcome small orders for new customers so you can test our items in your market. E-mail us or contact now for more product information and a price quote.
