The IQDBT105 provides continuous off-air terrestrial reception of DVB-T and DVB-T2 RF signals, to be used as part of a re-broadcast transmitter system, for example, or for direct monitoring of a transmitter. The IQDBT105 is able to monitor input RF modulation parameters, including Modulation Error Ratio, and also compare the input with a template of modulation parameters stored within the unit to provide an alarm on error conditions.
IQDBT105 can be used in conjunction with RollCall network management system for advanced alarm monitoring and control.
Receives DVB-T2 RF signals and converts to DVB-ASI output
Monitors input level, Modulation Error Rate (MER) and lock status to ensure quality of service is maintained
Able to monitor RF modulation parameters and compare with pre-defined templates to provide alarms on error conditions
Seven fixed and eight programmable modulation parameter templates available
Template parameters include: the FFT in use, Guard Interval, Constellation of PLP and L1 modulation, LDPC ratio of PLP and PAPR reduction in use
Transport Stream Monitoring is included to monitor PAT conformance and PID presence against a user-defined list of expected PIDs
Excellent adjacent channel performance (+10 dB), useful for difficult RF environments such as transmitter sites
Receiver tuning and MER monitoring available via the RollCall Network Management system, with full access to templates and transport stream monitoring via on-board SNMP interface
Inputs and Outputs Signal Inputs
DVB-T2 (Single PLP (mode A) and multi PLP (mode B) to EN 302 755)
DVB-T2 Features Modulation
Guard interval: 1/4, 19/128, 1/8, 1/32, 1/128, 19/256, 1/16
Code rate: 1/2, 2/3, 3/4, 5/6, 7/8, 3/5, 4/5
Modulation: QPSK, 16QAM, 64QAM, 256QAM
FFT: 1k, 2k, 4k, 8k, 16k, 32k
Modulation status (tested with template): Selected PLP, Pilot pattern, Constellation, Guard interval, FFT, FEC, Rotation, PAPR, Extended carrier, L1 post signaling, No of T2 frames/superframe, Time interleaving blocks/frame, No of data symbols/T2 frame, FEC blocks/interleaving frame, FEC block length
Modulation status: PLPs present
Modulation ident: Cell ident, T2 system ident, network ident
Measurement and Alarms
Measured parameters: Input level (dBm), MER (dB), Lock status, Frequency (kHz), Frequency offset, Frequency error (kHz), TS bit rate, Pre LDPC BER, Pre BCH BER, LDPC error ratio, LDPC instantaneous iterations, LDPC error total/period, LDPC samples/period, LDPC mean error rate, Tuner temperature (°C)
Alarm parameters: TS sync loss, PAT repetition, PID presence against user defined list (up to 6 PIDs checked), Tuned, Alarm relay (summary), RF input level (upper and lower) RF input level, MER (lower), Frequency error (upper and lower), T2 template error, LDPC mean error (upper), LDPC warning (upper), LDPC interation (upper), Pre LDPC BER (lower), Pre BCH BER (lower), TS bit rate (upper and lower), Receiver lock, Tuner temperature (upper and lower)
Measurement and Alarms
Measured parameters: Input level (dBm), MER (dB), Lock status, Frequency (kHz), Frequency offset, Frequency error (kHz), TS bit rate, BER pre viterbi, BER post viterbi, UCE, UCE total, Tuner temperature (°C)
Alarm parameters: TS sync loss, PAT repetition, PID presence against user, defined list (up to 6 PIDs checked), Tuned, Alarm relay (summary), RF input level, MER (lower), Frequency error (upper and lower), TS bit rate (upper and lower), BER pre viterbi, BER post viterbi, Receiver lock, Tuner temperature (upper and lower)
Signal Outputs Serial data: 2 ASI (270 Mb/s)
Power Module power consumption: 4.5 PR (IQH3B Frame)
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