VB252

Sencore/Wellav

DVB-T/T2 Dual Monitoring Blade

VB252

Product Summary

VB252 is a dual input DVB-T/T2 input interface module that enables the monitoring of digital terrestrial transmissions. Two modules may be housed in a 1RU chassis together with a controlling VB120 or VB220 probe, providing high monitoring capacity occupying a minimum of rack space.

In addition to monitoring typical RF parameters, the monitoring solution optionally allows advanced analysis of the complex T2-MI protocol; signal integrity is verified layer by layer. This analysis functionality is complemented by the renowned VideoBRIDGE ETSI TR 101 290 monitoring engine to ensure standards conformance at all levels.

Main Features

  • Standards: DVB-T (EN 300-744), DVB-T2 (EN-302-755)
  • Fully compliant with DVB-T2 v1.3.1 including T2-lite and L1 post scrambling
  • Dual input digital terrestrial receiver one input is standard, second input is enabled with optional license
  • Fully independent inputs
  • All bands DVB-T/T2 receiver (47 - 1000 MHz)
  • Symbol rate range: 0.7 to 7.2 Msym/s
  • Full support for MFN and SFN systems
  • Channel bandwidth: 6, 7 or 8 MHz
  • RF inputs: 75 ohms F-connector
  • 1PPS input: 50 ohms SMA connector, female
  • Measured RF parameters: packet error rate, signal level, SNR, pre LDPC BER, pre and post BCH BER, MER
  • SFN drift monitoring using 1PPS input signal
  • Constellation diagram
  • Impulse response diagram with an optional license
  • Configurable round-robin testing
  • Fully controlled via backplane by VB120 or VB220
  • LEDs indicating RF signal lock
  • Built-in general-purpose alarm relay (GPI)

SPECIFICATIONS

MONITORING SPECIFICATIONS

  • Minimum input signal level: -80 dBm
  • Maximum input signal level: -20 dBm
  • Level accuracy: +/- 1.5 dB
  • Maximum MER: >38 dB
  • MER accuracy: <1.5 dB
  • Carrier offset: <15 ppm of frequency

RF INPUT

  • F-connector, female

ALARM RELAY

  • 9-pin D-SUB, male
  • 3-pin relay contacts

MECHANICAL

  • Standard 19˝ 1RU rack-mount
  • W x H x D: 19 x 1.7 x 15.75in. (483x43x400 mm)
  • Weight: 9.3 lbs (4.2 kg) fully populated

CONTROL AND MANAGEMENT

  • Fully controlled through backplane
  • Accessible through master VB120 or VB220 user interface

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