 Main function and features  Aluminum-casting housing, surface passivation, waterproof, heat dispersing, electric conduction, antisepticising. Flexible: (configurable, upgradeable) HFC bi-directional communication platform, all the components are plug-in type; HR9912 optical receiver can be configured and upgraded flexibly according to the development of network.
1. Function is configurable:
a) Uni-directional
b) Bi-directional
2. Frequency division is changeable:
Duplex filter, adopting mini plug-in component, a few kinds of filters are optional. Users can change uni-directional into bi-directional, low frequency division into high frequency division by filter.
a) In uni-directional network, choose 9940208/0 (47-862MHz).
b) In bi-directional network, choose:
Ⅰ. 9940207/0 (5-35/47-750MHz) (keep 1CH)
Ⅱ. 9940207 (5-42/53-750MHz) (no keep 1CH)
Ⅲ. 9940208 (5-65/87-860MHz) (high division)
3) Bandwidth can be widened:
HR9912, HR9924 optical receiver is designed as 1GHz passive platform, both the forward splitter and distributors are plug-in structure, with the development of integrated circuit technology, user can change the amplifier module to change 550MHz into 750MHz, 751MHz into 860MHz (or higher).
Maintainable: 1. With perfect operating status display and test port.
a) Each RF output level has -30dB test port.
b) Each RF return input level has -30dB test port.
c) Return path transmitter module, with 10V/mW power and 0.01V/mA bias current, <0.5dBm power lacking alarm, -20dB RF input level test port.
2. Convenient to install and adjust:
a) Each RF output level, and slope can be adjusted separately.
b) Each RF return input level can be adjusted separately.
Input of Return path transmitter module can be adjusted separately.
Main functional components 9920216 Return path optic transmitter module, adopting FP laser, 1~2mW, transmit 1~2 video.
9920217 Return path optic transmitter module, adopting un-cooled DFB laser, 2mW, transmit 2~4 video 9920218 Return path optic transmitter module, adopting un-cooled DFB laser, 4mW, transmit 2~4 video FLT-35/47 duplex filter 5-35/47-750MHz FLT-42/53 duplex filter 5-42/53-750MHz FLT-65/87 duplex filter 5-65/87-862MHz AT fixed attenuator plug-in component EQT adjustable equalizer plug-in component |
