The VX 57 A is a Universal line remote feeding amplifier that has 2 active output and slots for feeding channels. In addition, it has an incorporated VX 58 ASC module. All settings are adjusted via OH 41 or LMT (laptop).

• Two active outputs
• All settings with OH 41 A handset or LMT (laptop) when using a HMS-transponder
• Interface for NMS-function
• Diplex filters and splitter / tap modules pluggable
• Return channel amplifier pluggable
• ASC module VX 58

• Downstream
  Inputs	1 pcs.
  Input measurement socket	20 dB
  Input return loss	>20 dB
  Frequency range downstream	47/85...1006 MHz
  Gain downstream	2x 39,5 dB (with XM 51 A (4/4 dB))
  Noise figure downstream	≤6,5 dB
  Attenuator downstream	0...15 dB (0,1 dB-steps)
  Equalizer downstream	0...15 dB (0,1 dB-steps)
  Interstage attenuator downstream	0/5/10 dB
  Interstage equalizer downstream	0/6/9 dB
  Output level 1	2x 111 dBµV (CENELEC 42 channels, flat, at CSO/CTB >60 dB)
  Output level 2	2x 114 dBµV (CENELEC 42 channels, 6 dB slope, at CSO/CTB >60 dB)
  Output test point	20 dB
  Output return loss	>20 dB
  Output splitter	1 pcs.
  Upstream
  Frequency range upstream	5...30/65 MHz (depending on diplexers)
  Gain upstream	26 dB
  Noise figure upstream	≤10 dB
  Attenuator upstream input	0...30 dB
  Attenuator upstream output	0...30 dB
  Equalizer US	0...10 dB
  Output level 4	116 dBµV
  ICS, US	0/-8/-45 dB (switchable)
  Upstream test point	20 dB
  Connectors
  PG11	4 pcs.
  General data
  Operating voltage AC	27...65 V (50/60 Hz)
  Power consumption	33/31 W (with/without transponder)
  Remote power	<8 A
  Screening factor	Class A, EN 50083-2
  Dimensions (width x height x depth)	261x215x100,4 mm
  Operating temperature range	-20...+50 °C
  Lightning protection	6 kV (EN61000-4-5, 1,2/50 µs pulse)