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+86-185-6525-09081.1 Product Overview
WSJ1008B is an 8-channel frequency-separated modulator developed by WSJE Company. It can convert 8 audio and video signals into a single radio frequency signal for output. This product is widely used in places such as hotels, factories, hospitals, schools, and enterprises that require a television system.
1.2 Key Features
Eight audio and video channel inputs, with one RF output covering eight channels with frequency spacing.
High-frequency modulation is adopted, resulting in minimal out-of-band interference.
The audio and video signals use MCU phase-locked technology, ensuring high frequency stability and accuracy.
All functional circuits of the entire machine are manufactured using chip-like processes, providing high overall reliability.
Easy to operate; volume level and video modulation depth can be adjusted on the front panel.
1.3 Specifications
Radio Frequency | Output channel | 47--870 |
Frequency accuracy | ± 5kHz | |
Output Level | 90 dBmV | |
Out-of-band suppression | - 60dBc max | |
Output impedance | 75Ω | |
Output Reflection | 12dB minimum any channel | |
Video | Audio - Image Carrier | 18 ± 2dB |
Input level | 0.6 ~ 1.5Vp-p | |
Video input impedance | 75Ω | |
Video input reflection | 30dB min | |
Signal-to-Noise Ratio (Weighted) | 60dB | |
Latency | 45 nsec | |
Bandwidth flatness | ± 1dB | |
Differential Gain | ± 5 % （Modulation depth is 87.5%） | |
Differential phase | ± 5° （Modulation depth is 87.5%） | |
Audio | Input level | -10 ~ 10 dBm |
Input impedance | 10KΩ min | |
Bandwidth Flatness | ± 1dB | |
Distortion degree | 1 % | |
Signal-to-Noise Ratio | -60dB | |
Image and sound spacing | According to the format | |
Power supply | Input AC voltage | 220V |
Power consumption | 15W max |
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