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2
GENERAL DESCRIPTION AND PRINCIPLE OF OPERATION
2.1 Functions
The DAT103 offers measurement of the following parameters:
•
Analog channels: video carrier level, V/A ratio, and C/N ratio.
•
Digital channels: signal level measured in channel power.
•
DVB-T signals: measurement of reception quality parameters:
•
Modulation Error Ratio (MER)
•
Bit Error Ratio (BER) before and after Viterbi decoder
•
Error packets after Reed-Solomon decoder counter
•
Constellation diagram.
DAT103 settings including channel frequency, subcarriers number, subcarriers
modulation type, guard interval, code rate and spectrum inversion are set
automatically. The DAT103 can be connected to a personal computer to access
additional functions. The analyzer also measures DC and AC voltages of line
power supplies in TV and broadcasting distribution networks.
Front and bottom views of the analyzer are
shown in Figure 1.1. and Figure 1.2.
Figure 1.1
Figure 1.2
