DVB-T/T2, ISDB-T

The DTMR T900 series is designed to monitor last generation digital terrestrial transmitters.
The very high quality down converter enables precision monitoring of all the RF parameters directly out of the transmitter or on the territory in order to verify if signal degradation is due to transmitter trouble or interference from other transmitters.

Features

  • COFDM front-end full ETSI EN 300 744 and EN 302 755 V 1.3.1 (DVB-T2/ T2-lite compliant)
  • Compliant with ETSI TS 102 733 (T2-MI)
  • Frequency tunable on bands III, IV-V-6,7,8 M Hz channels bandwidth
  • Hi level RF input for precision measurements even with elevated levels of RF
  • FFT size: 1, 2, 4, 8, 16, 32K, All FEC modes
  • MPEG2-TS provided on 2 ASI outputs at 270 Mbit/s bit rate, according to EN 50083-9 standard
  • One MPEG2-TS ASI input
  • RF demodulation quality measurements and MPEG2-TS analysis according to TR 101 290
  • Internal Hardware MPEG-2/MPEG-4 AVC HD -decoder - PAL and audio outputs
  • Access to configuration data and analysis (results) on front panel through Large extractable LCD Touch display
  • Alarms synthesis on 8 front panel led for immediate readings
  • User programmable relay outputs, con be associated alarm
  • Local audio/video outputs (analog on BNC and RCA)
  • Video/audio over IP with re-encoded video in order to occupy a very low return channel bandwidth
  • Full remote control thru SNMP
  • Single and multichannel monitoring modes available
  • Firmware remotely up-graded
  • Alarm thresholds settable for each measurement or analysis parameter
  • 19” 1U cabinet- 100/240 V- 47/60 Hz power supply

I/O MPEG2-TS

The MPEG-TS signal to the analyzer and decoder con be fed from the front-end or the ASI input. The selected MPEG-TS signal from the frontend and the ASI input is available on 2 ASI outputs; one contains the RF TS and the other replicates the ASI input.

Interface

Power Supply: 100-240 VAC, 47-60Hz
Consumption: < 50 VA
Cabinet: 19” rack, 1U, 350 mm depth
Guaranteed specifications: + 5 to + 45 °
Operation temperature: 0 to + 50 °C
RF input: 174-900MHz (+10 to -80dBm)
Bandwidth: 6, 7, 8 MHz
ASI input: 1 x 75 ohms on BNC 800mV
ASI outputs: 2 x 75 ohms on BNC 800mV
10MHz input: min 1vPP from any GPS
1ppS: min 1vPP from any GPS
Video output: PAL 1vpp 75ohms on BNC
Audio outputs: L + R 2vpp 600 ohms on RCA unbalanced

Front-end functionality

  • Full compliance to ETS 300-744 specification and EN 302 755 V1.3.1 (DVB-T2 and T2 lite compliant)
  • Frequency tunable upon TV frequency bands VHF III & UHF IV-V
  • Automatic offset, Bandwidth selectable 6, 7, 8 MHz MPEG analysis
  • The extracted MPEG2-TS from the COFDM Front-End and/or from the ASI input is analyzed according to TR101 290
  • The elementary audio and video MPEG/AVC HD stream se lected by the user is uncompressed and then the SD or HD video signal is converted from digital to analog and trans-coded down to PAL.

First priority

1.1 TS synch loss
1.2 Synch byte error
1.3 PAT Error
1.4 Continuity indicator Error
1.5 PMT Error
1.6 PIO Error

Second priority

2.1 Error indicator to 1
2.2 CRC Error
2.3 PCR recurrence
2.4 Selected program(s) PCR precision
2.5 PTS Recurrence
2.6 CAT Error

Third priority

3.1 NIT Error
3.2 SI repetition error
3.5 SDT Error
3.6 EIT Error
3.7 RST Error
3.8 TDT Error

Rf analysis

The equipment provides continuous high-quality measurements for RF demodulation:

  • BER pre Viterbi
  • BER post Viterbi
  • MER 40dB ±1dB
  • RF input level ±1dB

Frequency offsets and carrier precision (±100Hz with internal ref, ±1Hz with external ref.)

Alarms & functionality

The equipment provides an alarm for each measurement:

  • Alarm thresholds con be set individually set on the front panel, 8 pre-defined alarms are displayed on LEDS
  • Alarm status con be accessed thru the extractable front panel display, web page, or thru SNMP
  • 4 relay outputs ore provided: the user con associate alarms to physical contact closures

Remote Control

Full remote control is available using HTTP and SNMP protocols
Compressed Audio/Video over IP for remote picture/content monitoring
An embedded web server available for browser based monitoring
Up to 16 channels can be programmed in round robin; the analyzer will check each channel in sequence and store the data so it can be recovered asynchronously
With the advanced features of an accurate and reliable instrument, the new version of the DTMR “SKY Watch” for the territory has been redesigned to be installed in an easy and quick way directly in your service area, without the need of power supply or an internet connection.
The unit delivered in a KIT installable without any physical connection; in fact, it is equipped with a solar panel and an internal modem for 2/3G/ UMTS connection
Thanks to its ease of installation, it is indicated also for monitoring specific areas even for short periods of time.
The measurements are viewable thru a web browser and also through all major mobile devices (IOS and Android) with the possibility to store and export data, make statistics, corrections and optimizations of the network.

ORDERING CODES

DTMR-T980 DVB-T/T2 Monitoring Receiver - 42dB MER + HD/SD A/V decoder board
SKY900-T2 DVB-T/T2 Precision Territorial Monitoring Receiver