User's Manual

Screen Service SDT ARK 1 ECHO Operations
Jan, 2012 v 1.ATSC_FCC Page 3 - 26
Box
Parameter /
Control
Description
Admitted Ranges / Values
R/H
System Mode &
Autoswitching
Frequency
Error [Hz]
Frequency error automatically corrected.
Note: When the frequency error exceeds the dynamics, STV might loose the lock.
 Out of range: input frequency error
exceeds 166 KHz dynamics. Set a +/-
166 KHz input freq. offset in order to
true up the dynamics.
 Min: -83 KHz
 Max: +83KHz
R/H
System Mode &
Autoswitching
Automatic
Freq. Control
Shows Automatic Freq. Control status.
 Enabled
 Disabled
R/H
Mode A / Mode B
S/N Thr [dBm]
Signal to Noise alarm threshold
 Min: -10 dBm
 Max: –50 dBm
R/H
Mode A / Mode B
Automatic
Freq. Control
Enabling button of the AFC (refer to Appendix A for further information)
 Enabled
 Disabled
R/H
Mode A / Mode B
Mode A / B
Selector of working mode.
Three different working modes are provided:
 Analog Television Heterodyne Transposer;
 Digital Television Heterodyne Transposer;
 Re-broadcasting ATSC Modulator.
 Rep. Analog
 Rep. Digital
 Tx ATSC
R/H