VWS 2551

SAT distribution network amplifier

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  • Distribution network amplifier for satellite and terrestrial range in Kathrein satellite IF distribution system 4 x satellite IF
  • Five amplifiers (4 x Sat IF and 1 x terrestrial range) are housed in one cabinet
  • High modulation stability of the amplifier trains
  • High decoupling between the amplifier trains
  • BK suitability of the terrestrial amplifier train by GaAs output stage
  • For indoor installation
  • Stepwise adjustable attenuation controls (1-dB step) for the satellite and terrestrial ranges (all satellite branches are adjusted simultaneously)
  • Stepwise adjustable pre-equalization (2/4/6 dB) in the satellite range (all satellite branches are adjusted simultaneously)
  • The power supply of the VWS 2551 and LNB supply is done by remote supply from the multi-switch, e.g. EXR 2508, via the satellite branch “horizontal low”.
  • The VWS 2551 can also be optionally powered via the DC connection with the NCF 18 power supply unit (not included in the scope of delivery)
  • When power is supplied via the DC connector, only the amplifier itself is supplied, but not the LNB power supply
  • Kathrein Power Saving: In systems that support Kathrein Power Saving (KPS), the LNB supply is switched off as soon as no receiver is in operation.
Type: VWS 2551
Order no: 20510099
Inputs: 1 x terrestrial / 4 x Sat IF
Decoupling strain: -45 dB
Max. Output level (2nd order interference products): 104 ⁴) / 104 ³) dBµV
Max. Output level (3rd order interference products): 108 ²) / 112 ³) dBµV
Protection class | Protection class: IP 30
Current consumption Terr. an: 85 mA
Current consumption Terr. off: 50 mA
Frequency range: 47 – 862 / 950 – 2150 MHz
Max. Operating level for BK (up to 862 MHz) ⁵): 96 / – dBµV
Max. Remote power supply current (per satellite branch): 1000 mA
Supply voltage: +18 V
Setting range of attenuation adjuster (1 dB steps): 0-14 / 0-15 dB
Amplification ¹): 16 / 15 dB
Adjustment range equalization: 2/4/6 dB
Connections: F-Connectors
Permissible ambient temperature: -20 to +55 °C
Dimensions (W x H x D): 112 x 148 x 43 mm
Packaging unit/weight: 1 (10)/0.37 pcs./kg

¹) Frequency-dependent amplification (pre-emphasis)
²) 60-dB KMA according to EN 50083-5
³) 35-dB IMA according to EN 60728-3
⁴) 60-dB IMA according to EN 60728-3
⁵) According to EN 60728-3, 60-dB-CTB/CSO, CENELEC grid

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