MEM-4750 Brochure - IRT Communications

MEM-4750
ASI / TSoIP (Ethernet) Network Interface Adapter
FEATURES
GENERAL
• ASI to TSoIP, or TSoIP to ASI conversion.
• IP de-jittering.
• Set up as either transmitter or receiver.
• UDP or RTP encapsulation.
• Supports enabling of Forward Error
Correction (FEC).
• DIP switch or SNMP software monitoring
and control.
The MEM-4750 is a Transport Stream over
Internet Protocol (TSoIP) converter that
acts as a gateway between an ASI and an
Ethernet network environment.
BLOCK DIAGRAM MEM-4750 SIGNAL PATH
MEM-4750
(Tx mode)
ASI I/P
100/1000 Base-T
MEM-4750
(Rx mode)
ASI O/P
ASI I/P
Ethernet
IP
Ethernet
DIP Switch
DIP Switch
SNMP
SNMP
ASI O/P
The MEM-4750 is designed to operate
independently as either a transmitter (ASI
to TSoIP) or receiver (TSoIP to ASI) or can
be used as a pair with one unit at each end
of an Ethernet link.
When configured as an ASI to TSoIP
converter (transmitter mode), the input ASI
stream is encapsulated into either UDP or
RTP Ethernet packets with controlled
scheduling of IP packets to prevent IP jitter.
Forward error correction (FEC) in
accordance to SMPTE 2022-1 can also be
added to the conversion when in RTP
mode.
An interesting application for the
transmitter mode is for visual monitoring
of the ASI stream’s content on an Ethernet
link by third party software, such as by
VideoLAN’s VLC media player (for a single
content ASI stream) downloadable as a free
download from the internet.
When configured as a TSoIP to ASI converter
(receiver mode), the MEM-4750 accepts
unicast and multicast IP streams over its
Gigabit Ethernet port. The UDP or RTP
packets are de-encapsulated with IP jitter
removal and error correction applied as per
SMPTE 2022-1. The resultant output being
either a 188 or 204 byte (settable) ASI
signal.
The Ethernet port has automatic
MDI/MDI-X detection, this detects whether
the Ethernet interconnect cable is a
straight through or cross over type and
automatically
switches
itself
to
accommodate, and will automatically
select the link speed of the connected
network (100/1000Mb/s).
All parameters are set via a preset range of
DIP switch settings, or via a Simple
Network Management Protocol (SNMP)
system.
The MEM-4750 is designed to fit IRT’s
standard 1000 and 4000 series Eurocard
frames and may be used alongside any
other of IRT’s analogue or digital
Eurocards.
Due to our policy of continuing development, these specifications are subject to change without notice.
I.R.T. Communications Pty Ltd | www.irtcommunications.com
MEM-4750
TECHNICAL SPECIFICATIONS
Input/Output:
Type
Transport Stream Bit Rate
Packet Size
Impedance
Return Loss
Equalisation
1 x ASI, BNC connector.
0.01 to 214 Mb/s.
188/204.
75 Ohm.
> 15 dB @ 270 MHz.
> 250 metres at 270 Mb/s for Belden 8281 or equivalent cable.
Ethernet:
Type
Data Rate
Connector
Ethernet Encapsulation
IP Support
IP Address Assignment
Multicast Support
Standard IEEE 802.3a.
100 Mb/s or 1 Gb/s, automatic.
RJ-45.
IEEE 802.2 SNAP and Ethernet II.
IPv4.
DHCP, DIP switch local or static.
IGMP v2.
Transport Stream Input/Output over IP:
TSoIP Encapsulation
UDP or SMPTE 2022-2.
Input-to-IP Delay
≤ 1 ms.
IP-to-Output Delay
1 to 1201 ms (programmable).
IP Input Jitter Tolerance
1 to 1202 ms (computed).
UDP:
TS Packet Size
TS Packets per IP Packet
188 or 204 bytes.
1 to 7.
SMPTE 2022-2:
Transport Protocol
Forward Error Correction (FEC)
Packet Size
TS Packets per IP Packet
FEC Size L
FEC Size D
FEC Size LxD
RTP.
SMPTE 2022-1.
188 or 204 bytes.
1 to 7.
1 to 20.
4 to 20.
4 to 100.
Power Requirements:
Voltage
Power consumption
28 Vac CT (14-0-14) or ±16 Vdc.
< 5 VA.
Other:
Temperature range
Mechanical
Finish
Front panel
Rear assembly
Dimensions
0 - 50° C ambient.
For mounting in IRT 19" rack chassis with input, output and power connections on the rear panel.
Grey background, black lettering & red IRT logo.
Detachable silk-screened PCB with direct mount connectors to Eurocard and external signals.
6 HP x 3 U x 220 mm IRT Eurocard.
NOTE:
1
2
Maximum delay depends on input bit rate and number of TS packets per IP packet.
Maximum jitter tolerance depends on programmed IP-to-output delay and on FEC delay.
Due to our policy of continuing development, these specifications are subject to change without notice.
I.R.T. Communications Pty Ltd | www.irtcommunications.com
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