AVT MAGIC AC1, Руководство по аппаратному и программному обеспечению

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PAGE 102
W i n d o w s P C S o f t w a r e
– Overheated : The systems sets this alarms if the system temperature is
higher than 57°C. Please disconnect the system from electricity or cool
down the ambient air temperature.
• Under
Application alarms
all possible application alarms are displayed.
A red LED signals a currently existing alarm. It is also displayed how often
the alarm occurred since the unit has been switched on.
–
H.221 Framing
: If the ITU-T J.52 inband signalling is used, faulty H.221
frames are displayed and filed.
–
Decoder synced
: This alarm occurs if the local decoder is not synchro-
nised.
–
Remote Decoder synced
: This alarm signals that the remote decoder
is not synchronised. It is only analysed if the ITU-T J.52 signalling is
used between
MAGIC Audio codecs.
–
Encoder sampling clock
: This alarm is currently not analysed.
–
Decoder sampling clock
: This alarm occurs when a sampling fre-
quency of 44.1 kHz is signalled in the ISO/MPEG data stream. This
sampling frequency cannot be decoded by the
MAGIC AC1 .
– If the optional, digital Audio output is selected, but no digital Audio
signal is connected to AUDIO1/AES/LEFT IN , the
AES3 Framing
alarm occurs.
– The actual system temperature can be found under
System Tempera-
ture
. The temperature is measured in °C. A normal system temperature
lies around 30...40°C.
– Under
DSP Load
the load of the system is displayed. A normal DSP
load is 30...60%.
• Under
System Logfile
a detailed ISDN logfile can be generated.
–
ISDN Layer 1
: (Physical Layer): All messages which concern the phys-
ical activation/deactivation of the ISDN interface are saved in Layer 1.
–
ISDN Layer 2
: (Data Link Layer): The Data Link Layer is responsible
for packing the data from the physical layer into frames. It can detect
and/or correct errors and manages the data flow between nodes. This
layer is only to be activated for logging if problems are supposed to oc-
cur. Please notice that if it is activated every 8 seconds an entry is gen-
erated and therefore the memory is filled very fast.
–
ISDN Layer 3
(Network Layer): The Network Layer handles the rout-
ing of the data (sending it in the right direction to the right destination
on outgoing transmissions and receiving incoming transmissions at the
packet level). For the logfile, this layer is the most important one since
all connection data is recorded here.
– The logfile can be deleted by pressing the
Delete File
button. For safety
reasons a confirmation is required.
The system stores all messages of the activated
ISDN Layer
. The internal
memory capacity is 128-kByte
1
. The data is stored in a cyclic way.
TIP
You can also configure a system alarm as relay output (see page 78).
NOTE The data can be analysed with the Option: Remote Control Software (see
CHAPTER 8.2, page 120). Our support is also able to read the data remotely.
If you experience problems with your ISDN connection, please activate the
desired ISDN Layer of the system logfile enabling us to analyse them.