VB256

ISDB-T TERRESTRIAL RF INPUT MODULE

The VB256 ISDB-T input module expands Bridge Technologies’ digital terrestrial monitoring capabilities to encompass the Latin American and Japanese terrestrial markets. Supporting both ISDB-T/SBTVD-T standards, it enables customers operating in these regions to fully monitor their ISDB-T transmissions.

Technologies

Bridge Technologies options are designed to enhance the overall ability and performance of accurate monitoring in the broadcast environment

Click below to learn more about compatible technology options:

  • Overview

    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. The VB256 will enable the monitoring of multiple RF parameters, supporting 6, 7 and 8 Mhz channels.

    The demodulated transport stream is then presented to the card’s ETR 290 engine for full priority 1, 2 and 3 analysis. Each VB256 card has two independent inputs, allowing two channels to be monitored continuously. Multiple channels may also be assigned to a VB256 input, enabling the tuner to cycle round up to 50 channels and providing a dense yet compact monitoring solution.

  • Tech Features

    VB256 ISDB-T TERRESTRIAL RF INPUT MODULE

    • Supports ISDB-Tb ARIB STD-B31
    • Signal level, SNR, MER, BER per layer A/B/C Features ISDB-T/SBTVD-T Excellent phase noise resistance Excellent multipath equalization performance Two independent RF inputs capable of parallel operation
    • 75 ohm female F-type connectors
    • 9-pin D-Type male connector for relay alarm indication
    • One red/green LED TS sync indicator per RF input
    • Round-robin capability across multiple PLPs within one frequency

    RF SPECS

    • Channel bandwidth: 6,7,8 MHZ
    • RF input level: -70 to -10 dBm
    • RF input signal frequency range: 42MHz – 1002MHz
    • Connector Type: F-Connector Female
    • The matched input presents 75ohm impedance
    • Return loss: > 9 dB

    RF PARAMETERS

    • Channel power RF level
    • Modulation Error Rate MER(PLP)
    • Signal to Noise Ratio SNR
    • PreRS BER-A
    • PreRS BER-B
    • PreRS BER-C
    • PER-A
    • PER-B
    • PER-C

    ISDB-T SYSTEM

    • ISDB-T – ISDB for Terrestrial Television Broadcasting
    • ISDB-TSB – ISDB for Terrestrial Sound Broadcasting ISDB-T system modes
    • 1 (Number of carriers = 1405)
    • 2 (Number of carriers = 2809)
    • 3 (Number of carriers = 5617)
    • Code Rate : 1/2, 2/3, 3/4, 5/6, 7/8
    • Modulation : DQPSK, QPSK, 16QAM, 64QAM
    • Guard Interval : 1/32, 1/16, 1/8, 1/4

    RF SPECIFICATIONS

    • RF power level: -80 dBm to -20 dBm
    • RF power level accuracy: +/- 1.5 dB
    • RF power level resolution: 1 dB
    • Maximum SNR: > 38dB +/- 1.5dB
    • Maximum MER: > 38dB +/- 1.5dB
    • Carrier offset: < 15 ppm of tuning frequency
    • SFN drift: 0 to 500ms
    • SFN drift accuracy: +/- 2us

    VB256 (requires Advanced RF Option)
    – Channel Impulse Response diagram with alarming capabilities
    – Constellation diagram

  • Software Options
    • Additional RF input option for VB256 card for a total of two, factory ordered
    • Additional RF input option for VB256 card for a total of two, upgrade
    • Additional ARF input option for VB256 card, factory ordered
    • Additional ARF input option for VB256 card, upgrade
  • Ordering Codes

    VB256 ISDB-T- Terrestrial RF Input Module

    VB256RF-OPT – Additional RF input option for VB256 card for a total of two, factory ordered

    VB256RF-UPGR – Additional RF input option for VB256 card for a total of two, upgrade

    VB256-ARF-OPT – Additional ARF input option for VB256 card, factory ordered

    VB256-ARF-UPGR – Additional ARF input option for VB256 card, upgrade

  • Documentation

Environmental

Chassis Options