TVG420 User Manual 2.2 (SW release 1.2.2)

ASI-IP-GTW User's Manual1.1.1.18 DVB ASI inputInputs connected to the DVB ASI ports should be on DVB complianttransport streams in asynchronous serial format.Each DVB ASI connector has two LEDs associated with it; ASI Rx andActive. Both LEDs are lit when the ASI input is enabled and a DVB ASIstream is connected to the port. If the input is enabled, but no validstream is connected to the port, only the ASI Rx LED is lit. If the ASIinput is disabled none of the LEDs are lit.1.1.1.19 DVB ASI outputWhen in IP receive mode, the ASI port will provide a DVB complianttransport stream. When no stream is received over the IP network, theoutput will be idle characters. If a stream is received, the output will bea combination of MPEG-2 transport stream data bytes and idlecharacters.The ASI Rx is always unlit when the ASI port is configured as an ASIoutput. The LED, designated Active, is lit when the output is enabledand unlit when the output is disabled.2.4.3 Ethernet data portThe Ethernet port provides an electrical Ethernet data port. The defaultinterface is 100Base-T. As an option, the port can be operated as1000Base-T. In this case the port can auto sense between 100 and1000 Mbits/s. The operator is able to force the interface speed to fixed100Mbit/s or fixed 1000Mbit/s. This is useful to minimize thesynchronization time when reconnecting signal cables.Table 6. Ethernet data portItemTypeConnector typeSpecification10/100/1000Base-TRJ45Two LEDs are associated with the Ethernet data port.For flexibility, the ASI-IP-GTW provides an optional Small Form-FactorPluggable (SFP) slot to carry a copper or optical SFP, allowingcustomers to use different SFPs for special distance, cost, existinginfrastructure, and future expansion requirements. The ASI-IP-GTW isprepared for electrical (1000Base-T) or optical 1000BASE-SX and1000BASE-LX SFP transceivers.Page 22