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Switching units (multiswitches)

Cascadable TERRA multiswitches MS553, MS554, MS554P

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Manufacturer:
System:
type of equipment:

Benefits:

  • The cascadable distribution system for signals of 4 satellite-based polarizations and of terrestrial TV for floor-by-floor
  • wiring layout or for construction of a Y-network;.
  • A possibility of power supply to low-noise converters through terminal multiswitches MS554, MS54P;
  • Effective use of power supplies: multiswitches do not consume current from the trunk;
  • The subscriber’s branch is fed from a corresponding receiver;
  • For ease of level equalization in the distribution network, there are provided two types of multiswitches  with different          tapping factors;
  • The passive route of terrestrial TV allows for reception of terrestrial programs without a CCTV receiver  being turned on;
  • Depending on quality of a cable used for interstage connections, up to 5 multiswitches may be cascaded without a trunk
  • amplifier;
  • Suitable for using a feedback channel.

MS553

  • A transit 5×4 multiswitch.

MS554

  • A terminal 5×4 multiswitch;
  • A possibility of power supply upward.

MS554P

  • A terminal 5×4 multiswitch;
  • Generates 14V IF for power supply through lines of V polarization;
  • 18V IF is supplied through lines of H polarization.

Technical specifications:

ТИП

MS553

MS554

MS554P

Frequency coverage

satellite TV

950 - 2300 MHz

terrestrial TV

5 - 862 MHz

Gain at tapping point

satellite TV

2 dB

terrestrial TV

-19 dB

Max. output level IMD3=35dB (EN50083-3)

93 dB µV

Isolation across inputs of satellite TV

>30 dB

Isolation between outputs

satellite TV

>30 dB

terrestrial TV

>30 dB

Gain in trunk

satellite TV

-3 dB

-

terrestrial TV

- 3.5 dB

-

Transit current through trunk lines

2 А max..

-

Transit current from peripheral power supply 18V

through V lines

-

+12V ÷ +18V & 1A max.

14 V & 0.5 A max.

through H lines

-

18 V & 1 A max.

Current consumption from receiver

<60 мА

Steering signals

V/Lo, H/Lo

11.5-14.5 V/0 KHz, 16.5-19 V/0 KHz

V/Hi, H/Hi

11.5-14.5 V/22 KHz, 16.5-19 V/22 KHz

Operating temperature range

-20° ÷ + 50°C

Overall dimensions

117 × 106 × 34 mm

117 × 97 × 34 mm

Weight (in pack)

0.25 kg

0.23 kg

 

Note:

For exemplified constructions of distribution networks with the use of TERRA switching units MS553, MS554 and MS554P see here