Newtec Azimuth Series AZ820 SPI/ASI to G.703 Converter
Enables the transmission of transport streams over E1, E2, E3, T1, T2, T3/DS3 digital carriers
AZ820 SPI/ASI to G.703 Converter
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The Newtec AZ820 is an interface adapter designed to take an MPEG transport stream over an ASI interface and convert it into a transport stream over a G.703 interface, or the other way around. This conversion enables the transmission of transport streams over E1, E2, E3, T1, T2, T3/DS3 digital carriers.
The Newtec Azimuth Series AZ820 converter is ideal for Digital Terrestrial and Mobile TV transmission networks when video/data signals have to be carried over fixed or microwave links between the hub and each remote broadcasting site.
Comprehensive Conversion
The AZ-820 performs the ASI to G703 conversion on the input side. This data converter allows automatic or manual selection between two DVB-ASI-coax inputs or a DVB-SPI input. One of the Electrical ASI interfaces can be optionally replaced by an optical interface. The rate of the input signal is adapted by adding null packets in order to match the rate of the digital carrier. Program Clock references (PRC) are restamped accordingly.
At the output, the signal rate can be slaved either to an internal clock, or to an external G.703 output clock. Optionally, a secondary G.703 interface with a specific data rate can be installed, giving the possibility to switch from one rate to another.
Optionally, the AZ-820 can be configured to perform G.703 to ASI conversion. If the MPEG signal needs to be transported without any modification, such as for the distribution of signals in a Single Frequency Network (SFN) , a special transparent mode can be activated. This guarantees that the transport stream at the ASI output of the G.703-ASI converter is bit-by-bit identical to the original input of the ASI-G.703 converter. In addition, when in transparent mode, we do not restamp the PCR value, nor delete incoming null packets.
The AZ 820 is easy to operate and monitor. All control and monitoring parameters are available locally on the front panel and remotely through a web interface. It is also possible to control or monitor the AZ820 via RMCP or SNMP.
Key features
• Rate adaption (for MPEG transport stream)
• Transparent mode
• Two selectable ASI inputs
• ASI Byte and Burst mode compatible
• Optical ASI interface (optional)
• G.703 interface: E1, T2, E2, E3 or T3 (DS3) rates
• Secondary G.703 interface
• Adaptive equalizer on G.703 interfaces
• SNMP
Main advantages
• Flexible conversion between broadcast and telco standard
• Solution for Single Frequency Networks
• Very compact
• Easy integration with remote M&C systems
Applications
• Transmission of MPEG signals over leased lines
• Digital Terrestrial TV networks
• Mobile TV networks
Related
AZ110 Broadcast Satellite Modulator
AZ910 DSNG and Contribution Demodulator
AZ120 Telco Satellite Modulator
AZ920 Telco Satellite Demodulator
AZ840 BISS scrambler
AZ850 Rate Adapter
AZ860 Concentrator - Deconcentrator
Interfaces
ASI Electrical inputs
• Connector BNC (F), 75 ohms
• Return loss (22-270 MHz) 17 dB
• Coupling transformer
• Sensitivity 200 mVpp
• Max input 880 mVpp
• Interface rate 270 MBaud ± 100 ppm
• TS packet formats 188 or 204-byte
• Packet timing (burstiness) compliant to DVB burst & byte mode
ASI Electrical outputs
• Connector BNC (F), 75 ohms
• Coupling transformer
• Level 800 mVpp ± 10%
• Rise time < 1.2 ns
• Interface rate as per DVB-A010 Rev1
ASI Optical input (optional)
• Connector SC
• fi ber 1300 nm multimode
62.5/125 mm
• Received power -27dBm to -14 dBm
ASI Optical output (optional)
• Connector SC
• Fiber 1300 nm multimode
62.5/125 mm
• Transmit power -19dBm to-14 dBm
• Wavelength 1270 nm < l < 1380 nm
SPI Input/output
• Connector 25 pin sub-D (F)
• Level LVDS
• Interface rate: 0-18 Mbit/s
G.703 Input:
• Rates 2.048 ; 6.312 ; 8.448; 34.368 ; 44.736 Mbit/s
• Connector BNC (F)
• Impedance 75 ohms
G.703 Output :
• Rates 2.048 ; 6.312 ; 8.448; 34.368 ; 44.736 Mbit/s
• Connector BNC (F)
• Impedance 75 ohms
• Line coding Fully compliant with ITU-T G.703
HDB3 for E1,E2 and E3
B3ZS for T3/DS3
• Clock stability (with internal reference)
- 2,048 Mbit/s ± 50 ppm
- 6,312 & 8,448 Mbit/s ± 30 ppm
- 34,368 & 44,736 Mbit/s ± 20 ppm
External 10.0 MHz reference (optional) :
• Input level -3 dBm up to +7 dBm
• Output level +7 dBm
• Connector BNC (F) - 50 ohms
Functionality
Rate adapter (ASI to G703)
• Transport rate input
Range 0-216 Mbit/s
• Packet buff er: 1024 packets max
• Transport rate ouput
Resolution 1 Hz
Accuracy 100 ppm
Internal Reference frequency
• High Stability (optional)
Stability ±5x10-8 over 0°C to 70°C
Ageing: ± 15 ppb/day
± 300 ppb/year
• Very High Stability (optional)
Stability ±2x10-9 over 0°C to 65°C
Ageing: ± 0.5 ppb/day
± 500 ppb/10 year
Generic
Monitor and control interfaces
• Web based GUI
• Diagnostics report, alarm log
• RMCP over TCP-IP/UDP and RS232/RS485
• SNMP v2c
Alarm interface
• Electrical dual contact closure alarm contacts
• Connector 9-pin sub-D (F)
• Logical interface and general device alarm
Physical
• 1RU, width: 19”, depth 51 cm, 6 kg
• Power supply: 90-130 & 180-260 Vac, 105 VA, 47-63 Hz
• Temperature
- Operational: 0°C to 40°C
- Storage: -40 to +70°C
• Humidity: 5% to 85% non-condensing
• CE label
• Transmission of MPEG signals over leased lines
• Digital Terrestrial TV networks
• Mobile TV networks
