• Seebest SB-7530MA CATV Line Amplifier Imported Module TV Signal Amplifier Booster For 80-120 TVs
  • Seebest SB-7530MA CATV Line Amplifier Imported Module TV Signal Amplifier Booster For 80-120 TVs
  • Seebest SB-7530MA CATV Line Amplifier Imported Module TV Signal Amplifier Booster For 80-120 TVs

Seebest SB-7530MA CATV Line Amplifier Imported Module TV Signal Amplifier Booster For 80-120 TVs

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Seebest SB-7530MA CATV Line Amplifier Imported Module TV Signal Amplifier Booster For 80-120 TVs

Features:

- Adopts imported module for Philips, generally used for 80-120 TVs
- Applicable to CATV system branch line or building distribution power amplification
- Manual gain and slope control
- Wide range high-precision slope adjustment
- Cast aluminum shell, rainproof and good shielding performance
- Both input and output ports have lightning protection

Specifications:
- Frequency range: 45-750MHz
- Nominal gain: 30dB
- Test port: -20dB
- In-band flatness: ±0.75dB
- Maximum output level: 120dBμV
- Nominal input level: 72dBμV
- Gain adjustment range: 0 to -20dB
- Slope adjustment range: 0-18dB
- Noise figure: ≤6dB
- Reflection loss: ≥16dB
- Lightning resistance: 5KV (10/700μS)
- Power supply voltage: AC40V~60V or AC220V±10% 50Hz
- Power consumption: 15W
- Dimensions: 270 x 195 x 85mm

Uses And Features:
The gain and slope can be adjusted in a wide range according to the actual situation. With professional device design, low noise, wide frequency band, it is not only suitable for the current standard of cable TV network transmission, supplementing TV signals, but also suitable for digital TV signals.

Precautions:
- The maximum output level of the amplifier should be changed according to the number of input channels, so as not to increase the nonlinear distortion caused by excessively high output level;
- When the amplifier is used in multiple stages in series, if the cross-interference and intermodulation index of the output signal is not good, it is recommended to reduce the output level. If it still cannot be improved, it is recommended to reduce the output level of the previous amplifier;
- When the low-frequency signal carrier-to-noise ratio (C/N) index is good, the equalization amount can be appropriately increased to pre-equalize the amplifier output level by 3-6dB, thereby reducing nonlinear distortion;
- When the amplifier -10dB output port is not in use, it should be connected to a 75Ω equivalent load to avoid signal leakage and interference from external signals to the unit;
- When the amplifier input and output signal lines are connected well, waterproof treatment must be added. When assembling the shell, the upper and lower shells must be aligned and matched. Use a special wrench to tighten the four fixing bolts diagonally
- Rated operating temperature of the amplifier -45 to 50℃;
- This machine is installed, debugged and maintained by dedicated personnel.

Package Included:
- 1 x Set of CATV Amplifier

Product Manual:
- Install and connect the amplifier according to the equipment structure diagram, and turn on the power. The power indicator of the amplifier should indicate normally;
- Balance adjustment (SLOPE ADJ): In order to compensate for the level difference between the high and low frequency bands caused by the transmission of the cable TV signal through a certain length of cable (the attenuation of the 45-750MHZ high and low frequency bands is about 4 times different, that is, when the 45MHZ frequency is attenuated by 5dB, 750MHZ The frequency point is attenuated by 20dB), please adjust the equalization button to make the amplifier output signal flat;
- Gain adjustment (GAIN ADJ): Too low input level will cause the carrier-to-noise ratio (C/N) to degrade, and too high output level will cause medium to large nonlinear distortion. Adjust the gain button to make the amplifier output level Between 92-100 dBμV.

Use or Precautions:
1. The installation position of the amplifier should be installed as close as possible to the splitter of the cable station when conditions permit, and the signal source should have a higher signal-to-noise ratio as much as possible. It is better to install it at a position with less attenuation and the image is clearer.
2. How to make the F connector: Please refer to the description of the packing box for details (the core wire and the shielded wire cannot be short-circuited), if you can't do it, you can contact us, we can help you connect the F connector and connect the short wire, the price is favorable.
3. If the effect is not satisfactory after installation, please check: whether the power is on; whether the feeder, connector, distributor or branch is in good contact.
4. The difference between amplifier, branch and distributor:
An amplifier is a device that amplifies electrical signals. A splitter is an electronic circuit that splits a part of one or several equal signals below the main output signal level when a main output signal passes smoothly. The distributor is an electronic circuit that can divide the signal into multiple channels equally.
5. Pay attention to indoor-type equipment. Waterproof and moisture-proof treatment should be done when used outdoors.

Reminder:
1. What is the purpose of the amplifier?
a. The source of the cable TV signal is not good, causing the image to be blurred and unclear.
b. The same wired line is distributed and connected to multiple TV sets, and the signal strength distribution is insufficient.
c. After the cable TV signal in the living room or room is distributed by multiple channels, the signal is seriously attenuated.
d. The computer graphic stock information receiving system is used, which can reduce the information error rate and increase the receiving speed.
e. It can be used in homes, buildings, shopping malls, hotels, guest houses and other places.
f. Professional device design. Low noise. Broadband. Suitable for current cable and additional channels.

2. What is the difference between home wiring and building wiring?
Generally speaking, the most reasonable wiring method for a small number of household TVs is parallel connection. The building is connected in series. This is related to the power of the amplifier and the branch divider.

3. What is the difference between a splitter and a distributor? The difference between splitter and amplifier?
The biggest difference between a splitter and a splitter is the output to the TV. The splitter output to the TV is the BR output port, and the splitter is the OUT port. The OUT port of the splitter is the output port that needs to be connected to the branch distributor. Because the attenuation of the OUT port of the splitter is very small, it is used as a branch device of the main circuit to reduce the attenuation of the TV signal in the series line. Small, with the main amplifier to balance the signal in the entire line. The splitter can be connected, but the distributor cannot. Connect a splitter to the TV after the amplifier, and only two or more can be connected to the TV. Please use a splitter in the middle.

The splitter does not have an amplifying circuit and does not have the ability to amplify signals. The splitter distributes the signal to each TV set to isolate the signal and minimize the signal interference between each TV set. When the signal entering the house is not strong, it is distributed to multiple users, and there will be a lot of snowflakes on the TV screen. This is a manifestation of insufficient signal. Just add an amplifier before the distributor, amplify it and distribute it. The amplifier has amplifying function, but does not have a distribution isolation function. When there are multiple TV terminals, it must be matched with the distributor.

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