Planar IT-088, Руководство по эксплуатации

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2.3. Function
The IT-088 Digital TV DVB-T Signal Analyzer belongs to the family of IT-08
measurement instruments and is intended for measurement of the parameters of DVB-T
and DVB-H (hereinafter DVB-T/H) standard TV signal.
The Analyzer offers the following measurement modes for analog channels: video
carrier level, video carrier to audio carrier (V/A) ratio, and video carrier to noise (C/N) ratio.
For digital channels the measurement modes are the following: channel power and C/N
ratio. For DVB-T/H signals IT-088 offers measurement of reception quality parameters:
modulation error ratio MER, bit error ratio BER before and after Viterbi decoder, number of
error blocks after Reed-Solomon decoder, immunity margin MARGIN, and constellation
diagram. IT-088 features automatic defining of the settings of DVB-T/H signals (channel
frequency, number of subcarriers, guard interval, FEC, channel bandwidth, and modulation
type).
The IT-088 can be connected to a personal computer to access additional modes. The
IT-088 operates in spectrum analyzer mode displayed on the built-in LCD. The Analyzer
allows to measure direct and alternating voltage of the remote power supply of the TV and
broadcasting distribution networks.
The appearance of the Analyzer and its components are displayed in figures 2.1 and
2.2.
Figure 2.1 Figure 2.2
This Operating Manual is made in accordance with the software version 8.0.0.2 for IT-
088.
2.4. Environment Conditions
Normal operating conditions:
a) ambient
temperature (23±5)
0
С ;
b) relative air humidity (55±25)%;
c) atmospheric pressure 84-106 kPa (630-795 mm Hg);
d) voltage transients correspond to installation category CAT. II.
Rated operating conditions:
a) ambient
temperature from -10 to 40 ° С ;
b) relative air humidity not greater than 90% at 25 º С temperature;
c) atmospheric pressure 84-106 kPa (630-795 mm Hg).