JM-7530MA Rainproof CATV Trunk Amplifier Digital Trunk Amplifier Replacing SB-7530 for 40-80 TVs

JM-7530MA Rainproof CATV Trunk Amplifier Digital Trunk Amplifier Replacing SB-7530 for 40-80 TVs

Features:
* The JM-7530MA is typically used for 40-80 television sets
* Suitable for CATV system branch lines or building distribution power amplification
* Manual gain and slope control
* Wide-range, high-precision slope adjustment
* Transparent module design
* Cast aluminum housing with excellent rainproof and shielding performance
* Both input and output ports are lightning-protected
* Modular and adjustable output

Specifications:
* Model: JM-7530MA
* Item Name: Rainproof CATV Trunk Amplifier
* Category: CATV Power Amplifier
* 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: -20dB to 0dB
* Slope Adjustment Range: 0 to 18dB
* Noise Figure: ≤6dB
* Return Loss: ≥16dB
* Lightning Protection: 5kV (10/700μs)
* Power Supply Voltage: AC220V ±10% 50Hz
* Power Consumption: 15W
* Dimensions: 270mm × 195mm × 85mm

Applications:
* Gain and slope can be widely adjusted according to actual requirements. With a professional component design, low noise, and wide bandwidth, it not only meets the standards of current cable television network transmission and analog TV signal amplification but is also suitable for digital TV signals.

Precautions:
* Adjust the amplifier's maximum output level according to the number of input channels to avoid excessive output levels that may cause increased nonlinear distortion.
* When multiple amplifiers are used in series, if the intermodulation distortion of the output signal is unsatisfactory, lower the output level; if that does not improve the issue, reduce the output level of the preceding amplifier stage.
* When the carrier-to-noise ratio (C/N) of the low-frequency band is good, increase the equalization level appropriately so that the amplifier output level is pre-equalized by 3–6dB, which helps reduce nonlinear distortion.
* When the -10dB output port of the amplifier is not used, connect it to a 75Ω equivalent load to prevent signal leakage and interference from external signals.
* Apply waterproof treatment to the amplifier's input and output cables after connection. When assembling the enclosure, align the upper and lower shells precisely and tighten the four fixing bolts diagonally using a special wrench.
* The rated operating temperature range of the amplifier is -45°C to 50°C.
* Installation, tuning, and maintenance should be carried out by qualified personnel.

Packing List:
* 1 × Trunk Amplifier

Packaging Details:
* Weight: 1.8kg