User's Manual

Screen Service SDT 200UB – SDT 500UB ARK-1 ATSC Operations
July, 2009 v 1.0 Page 3 - 47
Table 8. Input window
Box
Parameter /
Control
Description Admitted Ranges / Values I/A
ASI/SSI Word rate ASI input word rate. 10 bits word rate of ASI input (Ref. to CEI EN 50083-9). Approximately 27 Mword/s A
ASI/SSI Bitrate [bit/s] ASI input bitrate. A
ASI/SSI
Filtered bitrate
[bit/s]
Bit-rate actually used by the modulator.
• Zero when the input has not been
selected
• Equal to the total bitrate, when Delete
Null Packets disabled
• Less than total bitrate, when Delete
Null Packets enabled
A
ASI/SSI Format Format of received TS Packets (Ref. to CEI EN 50083-9).
• 188 Bytes
• 204 Bytes
A
ASI/SSI CD ASI Carrier detection flag.
• Green: Detected
• Grey: Not detected
A
ASI/SSI Lock
ASI lock status. The input Transport Stream is unlocked when more than two consecutive Sync Byte
are missed then five consecutive Sync Bytes must occur to regain the lock (Ref. to ETSI ETR-291)
• Green: Locked
• Grey: Not locked
A
ASI/SSI Overflow
ASI input overflow indicator. This alarm condition occurs when the input bit-rate exceeds the
capability of the modulation (Ref. to ATSC A/53).
• Red: Alarm
• Grey: No alarms
A