User's Manual
ISO 9001:2000 Cert. N°4500/1
Version 1.1 SDT_ARK6_User_Manual_ENG_vATSC Page 111 of 206
Alarm
Description and limitations
Troubleshooting
Mode(2)
RF mask (1)
[ITU] Input Wrong
Standard
Selected Input video standard (525 or 625
lines) not compatible with the ARK6 definition
standard.
Check input format
Check input statistics
ITU
X
[ITU] Holdover
An alarm that is raised when the Holdover
function is enabled and the set timeout period
elapsed prior to regain the lock of the
frequency reference.
Check input frequency reference source.
ITU
X
[ISDB-T] Input Error
ISDB-T
X
[ISDB-T] IIP
Modulation Error
ISDB-T
X
[ISDB-T] 1PPS Phase
1PPS is not lock to a common reference of
the network. This alarm is available only when
the frequency reference is external.
Check 1PPS
Hardware fault
ISDB-T
X
[ISDB-T] System
delay
ISDB-T
X
[ISDB-T] IIP SFN
error
ISDB-T
X
[ISDB-T] Network
delay
ISDB-T
X
[ISDB-T] Rate error
Layer A
The layer Rate alarm is on when the layer
input bitrate is over/under the expected
bitrate.
Expected bit-rate depends on modulation
parameter setting
Check input bitrate
Check modulation parameter setting
ISDB-T
X