Network Technologies DVB-ASI to IP Alarm Description Error source, Progress Bitrate estimation

Models: DVB-ASI to IP ASI-IP-GTW

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ASI-IP-GTW User's Manual

Table 14. Alarm condition description.

Alarm

Description

Error source

Bitrate regulation in

The regulation algorithm is working with

progress

bitrate estimation.

This alarm may stay on the first minutes after tuning to a new IP stream. If the alarm does not clear, the input stream may be a variable bitrate stream.

SNTP server

Unit is unable to connect to SNTP

unreachable

server.

There is no SNTP server on the configured IP address or there is no contact with the SNTP server due to network problems.

No sync

No valid ASI input stream detected.

The problem can be related to a problem with the sending device or the cable.

Too high

Internal temperature of unit is too high.

The fans are not working or forced

temperature

 

cooling is required.

 

 

 

Sequence error

Analysis of the sequence number of the

Typically this error is generated by

 

RTP layer indicates that IP frames have

packets being dropped by some

 

been lost or that they have been

equipment in the network, f.ex when a

 

received out of order

link is overloaded.

 

 

 

Defective fan

There is an error with fan of the unit

Hardware problem.

 

 

 

No data received

No data received on Ethernet input for

The most likely error is that there is a

 

stream

set-up problem where IP address and

 

 

UDP port are not correctly configured.

 

 

The error can result from an error with

 

 

the transmitting unit or an error on the

 

 

network.

No lock

The IP receive channel is not able to

 

find an initial bitrate for the data

 

received.

The stream contains a PCR PID with an invalid clock reference.

Data lost

Stream received is incomplete and a

 

valid ASI output can not be expected

See ‘Sequence errors’. If you have ‘Sequence errors’ but not ‘Data lost’, all frames are received but they are out of sequence, or enough data is received for the FEC engine to correct all lost frames.

ARP unresolved

IP address not resolved into physical

 

MAC address.

This error may be caused by wrong default gateway configured, wrong unicast IP address on same subnet or unit on same subnet does not respond.

Ethernet link down

No link on Ethernet layer

No connection on physical layer.

 

 

 

Input buffer

The total bitrate of the IP input streams

There is a configuration error or one of

overflow

is too high.

the sources is generating a too high

 

 

bitrate.

Output buffer

The total bitrate of the ASI input

overflow

streams is too high.

There is a configuration error or one of the sources is generating a too high bitrate.

The description of the severity levels of the different alarms are given in Section 5.2.6.

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Network Technologies DVB-ASI to IP, ASI-IP-GTW user manual Alarm Description Error source, Progress Bitrate estimation