User's Manual

Screen Service SDT ARK 1 ECHO Purpose and planning
Jan, 2012 v 1.ATSC_FCC Page 2 - 6
Figure 2 Echo down-converter block diagram
SAW
Mix
Flt
MGA
ADL
ADF
vc
o
Lo
Ch RF Out
ARM
ADUC
Reflect
Forw.
Drive
Detect
Detect
Detect
Detect
Detect
Detect
Detect
+
FeedBack
Fw Out
RMS Fw
RMS Ref
A A
Peak FW
AAA A
Ph Drv
RMS Drv
A
Peak Drv
Alim
IF_Out
146M
Ser