技术细节
| 噪声系数 |
7 dB |
| 频带 |
85 - 1006 MHz |
| 增益 |
30 dB |
| 增益（正向路径） |
20 dB |
| 增益（反向路径） |
20 dB |
能量控制
| 接受频率 |
50 - 60 Hz |
| 输入电压 |
32 - 65 V |
In-house distr. amp.
- House connection amplifiers for modern HFC networks
- VOS 137/RA - locally fed
- VOS 138/RA - remote-fed through RF input (auto-supply)
- VOS 139/RA - remote-fed
- State-of-the-art GaAs-MMIC technology
- Very high output level at a favourable energy balance
- Highly efficient switched-mode power supply unit
New innovative operational concept:
- Easier levelling due to rotational switch, wide setting range (20 dB), small increments (1 dB)
- Basic configuration via bridging plugs
- Device settings can be reproduced exactly
- Insert position for additional functions in forward path (e.g. de-emphasis, system equaliser)
- Variable interstage gain 40/34/30 dB using bridging plugs (delivery status: 34 dB)
- Diplexer bridgeable (Band I operation possible without return path)
- Return path (active/passive/switched-off) with diverse built-in setting options
- Classification to KDG 1 TS 140: Type D (4.4)
Test sockets (F-type connectors):
- Bi-directional on input (connectable)
- With directional coupler on output
- Internal LED function display
- Surge absorbers on input and output
Comprehensive remote feeding concept (VOS 139/RA):
- Remote-feed current: max. 5 A
- Remote-feed voltage: 32-65 V~
- Remote-feed options: Through RF input and output or through local connection (power passing)
- Conform to: EN 60728-11, EN 50083-2 and EN 60065
- Die-cast housing with F-type connections (VOS 137/RA, VOS 138/RA) or PG 11 connections (VOS 139/RA: cable fittings must be ordered separately, not included in delivery scope)
- For use in weather-protected locations
- The amplifiers comply with the EMC directive 2004/103/EC and Low-Voltage Directive 2006/95/EC applicable at the time of shipping
