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- BER after Reed-Solomon decoder
DVB-C channel power threshold ( preBER <2.0x10
- QAM64
- QAM256
DVB-C channel automatic frequency control
DVB-T demodulator parameters:
- Modulation type
- Subcarrier modulation types
- Channel bandwidth
- Number of channel subcarriers
- Guard interval
- Hierarchical modulation
- FEC
DVB-T MER measurement range:
- QAM64, FEC 3/4
MER measurement resolution
MER measurement accuracy within 50 to 110 dBµV level range
BER measurement range:
- BER before Viterbi decoder
- BER after Viterbi decoder
- BER after Reed-Solomon decoder
DVB-T channel power threshold ( postVBER <2.0x10
QAM64 , FEC 3/4:
Automatic frequency control
Warm-up time
Ethernet interface:
LAN parameters
Control protocols
Non-volatile memory capacity
Continuous stable operation under normal conditions
Mean time between failures, no less than
Average lifetime, no less than
Rack design
Dimensions
Package dimensions
Weight
Weight in package
CIU-003 is powered from AC circuit with 110-265 V voltage and 47-63 Hz frequency
with no more than 5% harmonic content.
Insert two 5x20 mm fuses with nominal operating current of 1.25 A into the fuse-
holder.
1.7. Design and Operation Overview
1.7.1. Principle of Operation
CIU-003 TV Signal Analyzer is a receiver of DVB-C and DVB-T signals with demodulation to the
MPEG-2 transport stream and its further analysis. The input tuner is a triple superheterodyne
receiver with auto or manual frequency tuning. Modulation error ratio MER is measured in the
process of QAM signal demodulation based on vector analysis. Bit error rate BER in digital stream
is determined by means of analyzing the Reed-Solomon and (or) Viterbi decoder operation.
Channel power is measured using analog-to-digital converter after signal peak detection at output
of logarithmic detector of the third IF amplifier.
-4
):
DVB-T
General parameters
8
-4
1.0x10
to 1.0x10
45 dBμV
50 dBμV
±0.25 MHz
COFDM
QPSK, QAM16, QAM64
7 MHz, 8 MHz
2k, 4k, 8k
1/32, 1/16, 1/8, 1/4
α=1, α=2, α=4
1/2, 2/3, 3/4, 5/6, 7/8
18 to 35 dB
0.1 dB
±2.0 dB
-2
1.0x10
to 1.0x10
-3
1.0x10
to 1.0x10
-4
1.0x10
to 1.0x10
-4
40 dBμV
), for
±0.5 MHz
5 min
RJ-45 / 100BASE-TX
IPv4 / DHCP
SNMPv1
80 measurement logs 160
channels each
Unlimited
10,000 hours
5 years
19''/1U (IEC-297)
483x163x44 mm
560х265х165 mm
2.0 kg
3.0 kg
-9
-9
-9
-9
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