User's Manual

Screen Service SDT ARK 1 ECHO Operations
Jan, 2012 v 1.ATSC_FCC Page 3 - 80
Reflex Power High
RFL power goes over the maximum endurable limit.
H/R

Check the RF output for disconnection or wrong impendence
adaptation
0
Fan Speed
Fans speed is under the minimum speed (1,000 rpm).
H/R

Check fans connections

Verify that fans are not damaged; in this case substitute them. The
substitution can be performed during device normal operations
0
S/N level
Signal to noise ratio under the S/N threshold:

Heterodyne Digital repeater: Signal to Noise ratio,
detected by the ATSC receiver, under the S/N
threshold

TX ATSC: Signal to Noise ratio, detected by the ATSC
receiver, under the S/N threshold. only when RX HP
and/or RX LP inputs are selected as input HP and/or
LP.
H/R

Check alarm threshold

Check input signal and input channel
0
GPS Lock
GPS signal is not lock.
H/R

Check cable and GPS antenna connections

Hardware fault
X
GPS Communication Error
Communication errors between ARK1 main board and
GPS board.
H/R

Hardware fault
1