1 / 8
VOS
137/RA
20910027
VOS
138/RA
20910028
VOS
139/RA
20910029
House connection ampli
fi
er
Features
• The supply voltage of the ampli
fi
ers is 32-65 V or 230 V AC. This can give a fatal shock if touched!
• The only reliable method of disconnecting the ampli
fi
ers from the mains is to disconnect the power plug (VOS 137/RA).
• Do not touch live parts. This also applies after removing the device’s internal fuse.
• The power plug must be easily operable as the means of cutting power to the ampli
fi
er, meaning the wall outlet must be
close to the ampli
fi
er and easily accessible. Always disconnect the power plug during installation.
• Only install or deinstall the ampli
fi
er in the de-energised condition.
• The ampli
fi
ers must not be operated without the standard
fi
tted power supply unit guard cover. The cover must be
closed.
• No liquid-
fi
lled items may be placed on top of the ampli
fi
ers.
• The ampli
fi
ers must not be exposed to dripping or splashing water.
• Permissible ambient temperature -20 to +55°C
• The remote power feed transformer or converter required for supplying the VOS 138/RA and VOS 139/RA must comply
with protection class II and with EN 60065 and EN 60950. Its maximum fault current (short-circuit current) may not
exceed double the nominal current value. Recommendation for VOS 138/RA and VOS 139/RA: TVF 20 (BN 236678).
Basic safety precautions
• Installation must be carried out by authorised specialist staff.
• Described ampli
fi
ers are exclusively for installation of HFC networks up to 1006 MHz.
• Any other use or failure to comply with these instructions will invalidate the warranty.
• The ampli
fi
ers may only be installed in dry indoor areas. Do not install on or against highly combustible materials.
• The safety regulations set out in the current EN 60728-11 and EN 60065 standards must be complied with.
■
House connection ampli
fi
er for modern HFC networks
■
VOS 137/RA
VOS 138/RA
VOS 139/RA
-
-
-
locally fed
remotely fed via RF input (auto-supply)
remotely fed
■
Very high output level with good energy balance
■
Modern GaAs-MMIC technology
■
Highly ef
fi
cient switched-mode power supply unit
■
New innovative operational concept:
- Simpli
fi
ed levelling using rotary switch, large adjustment
range (20 dB), small step width (1 dB)
- Basic con
fi
guration via jumpers
- Exactly reproducible device settings
■
Insert position for additional functions in the forwards path
(e.g. de-emphasis, system equaliser)
■
Gain is switchable 40/34/30 dB with interstage attenuation
using jumper (setting as supplied: 34 dB)
■
Diplexer can be bypassed (I-band operation available with
no return path)
■
Integrated return path (active/passive/disabled) with
numerous setting facilities
■
Classi
fi
cation to KDG 1 TS 140: Type D (4.4)
■
Test sockets (F connectors):
- two-way on the input (switchable)
- with directional coupler on the output
■
Internal LED function indicator
■
Voltage surge conductors 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 possibilities: Optionally via RF input and
RF output as well as via local connection (power passing)
■
In conformity with: EN 60728-11, EN 50083-2 and EN 60065
■
Die-cast housing with F connections (VOS 137/RA, 138/RA)
or PG 11 connections (VOS 139/RA: order cable
fi
ttings
separately, not included in the scope of delivery)
■
For use in locations protected from weather conditions
■
The ampli
fi
ers comply with the requirements of the EMC
Directive 2004/103/EC and Low-Voltage Directive 2006/95/EC
applicable at the time of shipping
■
