User's Manual

Screen Service SDT ARK 1 ECHO Operations
Jan, 2012 v 1.ATSC_FCC Page 3 - 32
Box
Parameter /
Control
Description
Admitted Ranges / Values
R/H
Turner Main
Squelch
alarm
Squelch alarm status.
 Red: Alarm
 Grey: No alarms
R/H
Turner Main
V Sync
Analog signal lock status. The PAL detector has been implemented through the detection of the video
carrier synchronization at 15,625 Hz.
 Green: Good Analog
 Grey: Bad Analog
R/H
HP/LP Receiver
Statistics
Demodulator
BER
Demodulator bit error rate.
R/H
HP/LP Receiver
Statistics
Viterbi BER
Viterbi byte error rate.
R/H
HP/LP Receiver
Statistics
Packet Error
Packet error counter.
R/H
HP/LP Receiver
Statistics
SNR [dB]
Signal to Noise Ratio.
R/H
HP/LP Receiver
Statistics
Constellation
Constellation for current modulation scheme..
 QPSK
 16-QAM
 64-QAM
R/H