6
2
General Description and Principle of Operation
2.1
Function
The
DVB-C IT-19C signal Analyzer is designed for
measuring
parameters of TV channels with
analog modulation: video level, video level to sound level ratio, video level to noise level ratio. You
can also measure power of TV channel with digital modulation.
For signals of DVB-C and J.83 Annex B digital cable television standards, the Analyzer allows to
measure parameters of reception quality — Modulation Error Ratio (MER), Bit Error Ratio (BER),
the number of wrong MPEG stream packets, the noise immunity margin (MARGIN), and the
constellation diagram (on PC screen).
IT-19C provides with the automatic settings detection mode (channel frequency, symbol rate,
modulation type). There is a spectrum analysis mode aimed at searching for any unwanted signal.
The Analyzer can be connected to a PC for additional service modes. The Analyzer allows you to
measure the direct and alternating voltage of remote distribution receiving systems of TV and
radio broadcasting network power supply.
2.2
Environmental Conditions
Normal operation conditions:
1)
ambient temperature
(23±5) ºС;
2)
relative air humidity
(55±25)%;
3)
atmospheric pressure 84-106 kPa (630-795 mm Hg);
4)
voltage transmitters correspond to CAT.
II
installation category.
Rated operation conditions:
1)
ambient temperature -10 to 5
°С;
2)
relative air humidity 90% to 25 ºС temperature;
3)
atmospheric pressure 84-106 kPa
630-795 mm Hg).
2.3
Package Contents
The Analyzer package includes:
1) The IT-19C Analyzer ............................................................... 1 pc.;
2) Rubber boot ........................................................................... 1 pc.;
3) Li-Po battery .......................................................................... 1 pc.;
4) F-F RF adapter ........................................................................ 1 pc.;
5) 12V/1.2A charger ................................................................... 1 pc.;
