Operation Manual

 If the connected input bit rate is higher than the rate entered in the Bit

Rate field, the ASI port will attempt to remove NULL packets from the

connected bitstream in order to achieve the desired value. PCR packets

will be re-stamped as required. If there are not enough NULL packets to

be deleted, packets will be dropped, and an alarm will be raised. This

alarm will be indicated in the Dashboard™ Card State field, in the front

Status LED, and in the ASI Statistics page.

o Automatic: If this mode is selected, the Bit Rate field disappears. The ASI

output will exactly match the rate of the connected bitstreams. However, if the

connected ports have no data, or if there is no connection to the ASI port, there

will be no output, and any connected downstream ASI device will indicate loss of

sync. The ASI Statistics page will indicate this state, as well as the rear I/O panel

indicator LED. Note that an alarm will only be raised if there is at least one

connection to the ASI output.

 Bit Rate: This field is only available if the ASI Rate mode is set to Manual. Enter the

desired ASI output bit rate here, in bits/second. The minimum value is 64,000 and the

maximum value is 213,000,000.

Once the port is configured, click on the Apply button, and the configuration takes effect.

ASI Ports: Statistics Tab

The Statistics Tab for the ASI Ports provides a quick visual summary status for the ports. A

sample, corresponding to the table example of the previous section, is depicted below.

Each of the ASI Port indicators can have the following values:

 TX OK: The port is operating normally in transmit mode (ASI Output).

 TX Overflow: The connected bit rate is excessive. The Dashboard™ Card State will

be red and the Status LED in the front of the board will also be red. To correct this

problem, either reduce the connected bit rate, or increase the ASI output bit rate, or

configure the port in Automatic mode. If this alarm is active, data is being dropped.

 TX Unlocked: The port is in automatic bit rate, and there is no data rate coming to it.

Any downstream ASI receivers will lose lock. Dashboard™ Card State and the Status

LED will be red if there is a connection to this port.