User's Manual

Screen Service SDT ARK 1 ECHO Operations
Jan, 2012 v 1.ATSC_FCC Page 3 - 21
Table 3. Input window
Box
Parameter /
Control
Description
Admitted Ranges / Values
R/H
ASI
Word rate
ASI input word rate. 10 bit word rate of ASI input (Ref. to CEI EN 50083-9).
Approximately 27 Mword/s
R
ASI
Bitrate [bit/s]
ASI input bitrate.
R
ASI
Filtered
bitrate[bit/s]
Bitrate actually used by the modulator.

Zero when the input is not selected

Equal to the total bitrate, when Delete
Null Packets disabled

Less than total bitrate, when Delete
Null Packets enabled
R
ASI
Format
Format of received TS Packets (Ref. to CEI EN 50083-9).

188 Bytes

240 Bytes
R
ASI
CD
ASI Carrier detect.

Green: Detected

Grey: Not detected
R
ASI
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
R
ASI
Overflow
ASI input overflow indicator. This alarm condition occurs when the input bitrate exceeds the capability of
the modulation (Ref. to ETSI EN 300 744).

Red: Alarm

Grey: No alarms
R