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Solutions and equipment for measurements and analysis of RF signals, monitoring and encoding

IT-088 Digital TV COFDM Signal Analyzer

 

   The IT-088 Digital DVB-T Signal Analyzer is a configuration of the IT-08 Multifunction TV Meter comprised of MB-08 Base Unit and MC-088 Removable Module. IT-088 is designed to ensure high-performance control and adjustment of television and broadcasting distribution networks as well as of separate components of such networks, or other electronic devices. The Meter allows measurement of DVB-T/H signal parameters and analog signals. IT-088 is capable to satisfy all your measurement needs for high-quality operation within the range of 45 to 865 MHz.

 

 

 

 

 

IT-088 GENERAL FEATURES:

 

o   lightweight and compact handheld design

o   measurement modes:

·         BER/MER mode performs measurements of DVB-T/H channels, indicates results on a bar-graph or a constellation diagram

·         SPECTRUM mode provides scanning of entire band with the span defined by the user from 18 to 72 MHz

·         SCAN, TILT and RIPPLE modes indicate the level of all the channels present in the band (or channels according to the channel plan) on a bar-graph

o   LEVEL measurements:

·         for analog channels: channel level, Carrier to Noise (C/N) ratio, Video to Audio (V/A) ratio

·         for digital channels: channel power, Carrier to Noise (C/N) ratio.

o   measurement of reception quality parameters of digital channels:

·         modulation error rate (MER)

·         bit error rate before (preVBER) and after (postVBER) Viterbi decoder, and also after (postBER) Reed-Solomon decoder

·         channel carrier frequency offset from the tuning frequency

o   data logger function providing storage for:

·         up to 32 channel plans (with channel names) and automatic channel plan creation. Automatic search for digital channel parameters (modulation type, symbol rate)

·         up to 200 measurement logs (each indicating channel levels, C/N and V/A ratios), checking the parameter compliance with the limit plan and saving comments and measurement date and time. For digital channels, channel power within bandwidth, S/N ratio, BER, and MER are measured

·         up to 200 spectrum analyzer logs with 125 kHz step, adjustable scanning span and saving comments and measurement date and time. Saving up to 14 spectrum logs within the full frequency range

o   analog channels audio reproduction with internal speaker

o   measurement of AC/DC input voltage within the range of 10 to 100 V

o   operation with PC for access to additional modes:

·         performing all kinds of measurements

·         viewing and editing channel plan pages

·         updating software and firmware

 

Specifications:

Frequency tuning range 5 to 900 MHz
Operating frequency range 45 to 865 MHz
Resolution 125 kHz
Built-in attenuator 20, 40 dB
Input mismatch attenuation
  • Input attenuator off
  • Input attenuator on

 

  • 14 dB
  • 18 dB
Level measurement range
  • Input attenuator off
  • Input attenuator 20 dB
  • Input attenuator 40 dB

 

  • 30 to 80 dBμV
  • 50 to 100 dBμV
  • 70 to 120 dBμV
Measurement level resolution 0.1 dB
Accuracy within 30-120 dBµV level range ±1.5 dB
Accuracy at operating temperature ±2.2 dB
Measurement channel passband for -3 dB level 230 ± 60 kHz
DVB-T/H demodulator parameters:
  • Channel modulation
  • Subcarrier modulation
  • Channel bandwidth
  • Number of subcarriers
  • Hierarchical modulation
  • Guard interval
  • FEC

 

  • COFDM
  • QPSK, QAM16, QAM64
  • 7, 8 MHz
  • 2k, 4k, 8k
  • α=1, α=2, α=4
  • 1/4, 1/8, 1/16, 1/32
  • 1/2, 2/3, 3/4, 5/6, 7/8
MER measurement range (for QAM64, FEC 3/4)
  • MER measurement resolution
  • MER measurement accuracy within 50-110 dBµV level range

18 to 35 dB

  • 0.1 dB
  • ±2.0 dB
BER measurement range
  • BER before Viterbi decoder
  • BER after Viterbi decoder
  • BER after Reed_Solomon decoder

 

  • 1.0x10-2 to 1.0x10-8
  • 1.0x10-3 to 1.0x10-8
  • 1.0x10-4 to 1.0x10-8
DVB-T/H channel power threshold (postVBER < 2.0x10-4) 40 dBμV
Frequency auto tuning step ±0.5 MHz
Warm-up time, less than 10 min
Battery duration under normal conditions (2100 mAh battery capacity), no less than 6 hours

 

SAMPLE SCREEN VIEWS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC software ViewIt08C allows to:

 

o   performing all kinds of measurements

o   viewing  and saving data logger pages

o   editing channel plans

o   saving and documenting measurement results