Wegener Communications UNITY 4600 Manual De Usuario
Maintenance and Troubleshooting
52
800032-01 Rev. G
www.wegener.com
frequency (for domestic C-band satellites, this is 5150 minus the downlink frequency in
MHz). To rule out (2), try connecting the RF cable to another RF port and select that port (or
use RF Switch Bypass to force that other port). To rule out (3), try using another IRD.
MHz). To rule out (2), try connecting the RF cable to another RF port and select that port (or
use RF Switch Bypass to force that other port). To rule out (3), try using another IRD.
2.
If the first alarm message is “No Carrier Lock”, verify the RF Feed Port, Carrier Frequency,
Data Rate, FEC Ratio, and ID Tag (if Tags are in use) settings. Also verify that the LNB LO
frequency setting (in the IRD) is correct for the selected RF feed port.
Data Rate, FEC Ratio, and ID Tag (if Tags are in use) settings. Also verify that the LNB LO
frequency setting (in the IRD) is correct for the selected RF feed port.
3.
If the alarm message is “RF signal overload”, then reduce the carrier power entering the
Unity 4600
. Either add in-line attenuation (a splitter will do) or remove line amplification in
the RF circuit between the LNB and the IRD.
LEDS:
ALARM
ON and
CARRIER
ON
The
Unity 4600
may not be authorized for the network’s Conditional Access. If the
AUTH
LED is OFF and the alarm message, "Unauthorized for CA” appears, contact your network
provider to gain authorization in its Conditional Access database.
provider to gain authorization in its Conditional Access database.
Missing an
audio, video,
or ASI output
while others
are okay
audio, video,
or ASI output
while others
are okay
LEDS:
ALARM
or
WARNING
ON
Check the front-panel display for alarm or warning messages.
Unity 4600
alarm and warning messages. If
the message definitions are too technical to help debug the problem, report the messages
to your network provider.
to your network provider.
LEDS:
ALARM
and
WARNING
OFF
If no alarms or warnings are shown, suspect a bad connection or mis-programming of the
Unity 4600
:
1.
If audio or video are missing, check at the front-panel monitor jacks. If okay on the front
monitors, check the signal connections from the rear of the unit to the destination. If an
audio is missing from the rear panel outputs and cannot be detected at the front-panel
monitors, check that a valid audio stream is selected for that port and that the network
provider has supplied non-quiet programming on that audio.
monitors, check the signal connections from the rear of the unit to the destination. If an
audio is missing from the rear panel outputs and cannot be detected at the front-panel
monitors, check that a valid audio stream is selected for that port and that the network
provider has supplied non-quiet programming on that audio.
2.
If the ASI output is missing, check the signal connections from the rear of the unit to the
destination. If okay, check with the network provider to verify what Program Mapping
(Release 2 or later) may be in effect.
destination. If okay, check with the network provider to verify what Program Mapping
(Release 2 or later) may be in effect.
4.3 Alarms and Warnings
The alarm and warning system is intended to alert the local user of a present or impending
loss of services.
loss of services.
below lists many (but not all) of the possible alarm and warning
messages that the
Unity 4600
may display. For problems you cannot resolve on your own,
please contact Wegener Customer Service (see Chapter 5), and be prepared to describe
your signal setup,
your signal setup,
Unity 4600
configuration, and any displayed alarm and warning
messages.
Alarms
An alarm is asserted when the unit is unable (or presumed to be unable) to perform a
required function or deliver required services.
required function or deliver required services.
Warnings
A warning is asserted when an alarm condition is imminent or to indicate other conditions
requiring user attention.
requiring user attention.