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STM Satlink 2900 Modem | STM SatLink 1910 Maritime DVB Modem |
 
Unlike the iDirect modems with their remotely configured options files, the STM modems are configured onsite, via a built in web interface, or terminal comand line via telnet or serial port. It can be quite a challenge to make sure that your forward links, ODU, and IP configuration are correct, but once configured, the modems do work extremely well.

No fault of the modem, but there does seem to be more room for human error with this parameter-by-parameter approach, unless you have a clear list of the required comands to enter, and instructions to verify the final configuration.

The automatic beam switching function is very quick and efficient, and does not have the five-minute-per-beam delay of some other modems during blockage situations. When the modem loses the link, it rapidly switches and scans thorough the configured beams, until it finds a forwardlink lock.
http://www.stmi.com/stm/index.php?option=com_content&view=article&id=50&Itemid=138

 

 





 

Specifications

Traffic Classification:

DSCP, Protocol Type, IP Source Address, IP Destination

Address, TCP/UDP Source Port or Destination Port

May use combination of 802.1p,

QoS Treatment:

split into seven QoS sub-classes with separate priority

queues, congestion avoidance, and discard sub-class

Four Service Classes (VoIP, ViC, CD, BE)

Capacity Requests:

for bandwidth-on-demand, plus CRA & FCA

RBDC, VBDC, AVBDC in combination

IP QoS and Bandwidth-on-Demand

IP Packet Encapsulation & Compression

IP Routing and IP Stack Support

Format:

section packing, without regard to packet boundaries

per EN 301 192 & ISO 13818-1

(Tx & Rx) DVB-RCS standard MPEG2 MPE with

Header Compression:

21 bytes on (Rx), on each encapsulated IP packet

Removes up to 23 bytes (on Tx),

Routing:

Unicast and Multicast IP

Protocols:

DNS Cache, Telnet, SNMPV2c

IP, UDP, TCP, ARP, ICMP, IGMP, DHCP Server,

Advanced Options:

NAT; GRE Tunnels; VLANs

TCP Acceleration; HTTP Acceleration;

Management Interfaces

Local:

RS-232 CLI

Remote:

Telnet, SNMP v2c, Web GUI

Software Upgrade:

Local, TFTP or multicast via satellite

Compliance

CE:

Fully compliant with R&TTE Directive

DVB-RCS:

ETSI EN 301 790; SatLabs

DVB-S / S2:

ETSI EN 300 421 / EN 302 307

International:

Country specific certifications

TDM Receive (DVB-S2)

Modulation:

1 to 45 Msps with choice of MODCODs:

QPSK: 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10

8PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10

16APSK: 2/3, 3/4, 5/6, 8/9, 9/10

FEC Frames:

Normal (64 Kbit) and Short (16 Kbit)

Roll-off Factor:

20%, 25%, or 35%

Modes:

(DVB-S mode also supported for legacy networks)

CCM, VCM, ACM

TDMA Transmit (DVB-RCS)

Modulation:

QPSK

Symbol Rates:

125 Ksps to 3 Msps

FEC Rates:

1/2, 2/3, 3/4, 4/5, 6/7 (Turbo Codes)

Frequency Hopping:

Fast

Physical Interfaces

Serial Port:

& GPS formats NMEA-0183 (4.8 kbps),

GPCGA & GPGLL

RS-232, DB-9 (local management)

Ethernet:

10/100Tx Mbps, RJ-45 (user IP traffic)

Tx (BUC) Interface:

3 A, plus 10 MHz reference under software control.

F-type 75 Ohm; 24 VDC at up to

Tx Output: 950 to 1450 MHz ; - 35 dBm to 0 dBm

BUC control: Extended DiSEqCTM

Rx (LNB) Interface:

VDC, 300 mA maximum

F-type 75 Ohm; LNB Power 13 or 18

Rx Input: 950-2150 MHz; -65 dBm to –20 dBm

LNB Control: 22 KHz or 13/18 VDC signaling

Transmit Inhibit Switch: Optional with SatLink 100 card

Front LEDs:

Power, Error, Tx, Rx, Ethernet Link/Activity

Electrical, Environmental & Physical

Power Supply:

110-240VAC, 50-60 Hz, internal

Power Consumption:

10 W (IDU only, not including BUC)

Operating Temperature:

0 to 45 °C

Storage Temperature:

-20 to 85 °C

Humidity:

20% to 90% non-condensing

Size:

44 x 24.5 x 4.5 cm

Weight:

4 kg