User's Manual Part 2

3EM21522AAAA Appen
d
ix C
Issue 1, March 2008 DTR-0200-SA-SIRIUS
C-5
PA Module 0, 1, 2, 4, 5 or
Driver Module TR2 Volt-
age Fault
This alarm is triggered
when the voltage on tran-
sistor 2 exceeds 32 volts
or goes below 26 volts
Wrong voltage on tran-
sistor 2
Replace HPA
PA Module 0, 1, 2, 4, 5,
or Driver Module TRI
Current Fault
This alarm is triggered
when the current on tran-
sistor 1 exceeds 7
ampere or goes below
0.7 ampere
Wrong current on transis-
tor 1
Replace HPA
PA Module 0, 1, 2, 4, 5 or
Driver Module TR2 Cur-
rent Fault
This alarm is triggered
when the current on tran-
sistor 2 exceeds 7
ampere or goes below
0.7 ampere
Wrong current on transis-
tor 2
Replace HPA
PA Module 0, 1, 2, 4, 5 or
Driver Module Bias Volt-
age Fault
This alarm is triggered
when the BIAS voltage
exceeds 12 volts or goes
below 7 volts
Wrong BIAS voltage on
module
Replace HPA
Modulator Comm Error Communication error
with the modulator
IP Address of the modu-
lator is not set on the
Main Controller
Check the IP address of
the modulator on the
main controller – it
should correspond to the
IP address of the modu-
lator verified through the
CLI. Also check if the
MAC address of the
modulator is correct. If
everything is correct –
replace the SPU (modu-
lator fault)
Modulator Restarted Modulator fault Modulator internal fault Replace the SPU
No Lock to Input Stream Either bad connection
between the VSAT and
Modulator or VSAT is
unlocked
Check Satellite signal –
in this case this alarm will
come together with VSAT
alarm.
If there is no VSAT alarm
– check the cable con-
nection between the
modulator and the VSAT.
In case the VSAT alarm
is there – check the
VSAT cable. If it fails,
replace SPU (fault in
modulator and/or VSAT).
No Lock to OIM Block Normal if input stream is
of Legacy type. Error
decoding the incoming
stream of Overlay type.
Hardware problem with
the modulator or the
modulator is in the syn-
chronization stage
If this alarm appears
without VSAT/SFN
alarms – Replace SPU
(fault in Modulator).
Table C-1 Alarms, Possible Causes, and Suggested Response (Continued)
Alarm Description Possible Cause Operator Response