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− QPSK – Quadrature Phase Shift Keying;
− RF – Radio Frequency;
− RMS – Root Mean Square;
− RTP – Real-Time Transport Protocol;
− SECAM – Séquentiel couleur à mémoire (Color TV broadcasting standard);
− SES – Severely Errored Second;
− TF – Transponder frequency;
− TS – Transport stream;
− TV – Television;
− UDP – User Datagram Protocol;
− V/A – Video to Audio carriers ratio;
1.2. Safety Precautions
Thoroughly inspect the product and carefully read the related documentation to get
acquainted with all the safety markings and instructions before you start to operate the
Analyzer.
WARNING Only trained service personnel aware of the hazards involved should
perform repair on the Analyzer.
CAUTION Tuning the Analyzer and replacement of the components that influence
the accuracy of measurements without service personnel is strictly prohibited, since the
components used in the Analyzer are purpose-made and their replacement will result in
inaccurate operation of the Analyzer. To exclude the possibility of mechanical damage to
IT-100, the instructions regarding the storage and transportation (see sections 7 and 8) of
the Analyzer must be observed.
2. GENERAL DESCRIPTION AND PRINCIPLE OF OPERATION
2.1. Function
The IT-100 Multisystem TV Analyzer is designed for measuring parameters of digital
and analog TV signals and for controlling TV video and audio. The Analyzer enables
measurement of the following parameters for analog TV channels: channel level, Video to
Audio (V/A) ratio, Carrier to Noise (C/N) ratio. It allows measuring the following parameters
for digital TV channels: channel power and Carrier to Noise (C/N) ratio. For J.83 Annex
A/B/C (cable television), DVB-T/T2 signals (terrestrial television) and DVB-S/S2 signals
(satellite television), IT-100 offers measurement of reception quality parameters:
modulation error ratio MER, bit error ratio BER, constellation diagram, echo diagram and
impulse response. The Analyzer allows for ETSI TR 101290 real time analysis of transport
stream.
The Analyzer features operation in CATV networks distributing through coaxial or
fiber-optic cables, as well as in IPTV channels.
IT-100 offers automatic defining of the channel settings (channel frequency, TV
system, symbol rate, modulation, etc.).
The Analyzer can be connected to a personal computer to enable remote access to
its functions and updating its firmware. External memory devices can be connected to the
Analyzer via USB interface to enable data storage. IT-100 also features spectrum
measurement mode. It allows measuring direct and alternating current voltage of remote
networks powering and television and broadcasting reception distribution systems, as well
as supplying power to antenna amplifiers or LNBs. The Analyzer supports DiSEqC and
«Single Cable Routing» command system.
The appearance of the Analyzer is shown in figure 2.1.
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