Error Messages On The Top Menu Level - Promax MO-180 Manual De Usuario

USER'S MANUAL MO-180
CC...CC This decimal number is a global error counter. It counts the number of
errors at the moment in which the error message is displayed. Therefore, if an
error of any type occurs in a continuous fashion, this counter will have different
value whenever we look at some of the first 16 error detected by the modulator.
In relation to the counter value, it should be noted that, in order to detect an
error (e.g. the loss of synchronisation with a transport stream input), the equipment
waits for this situation to occur for more that 5 seconds. So, it avoids counting errors
during transitions between different configurations of the modulator or during brief
periods of time when a TS input is not available.
In any case, the total error counter CC...CC does account for each error event,
regardless of whether or not it lasts or repeats itself for more than 5 seconds.

4.15.1 Error messages on the top menu level

Apart from the 16 error messages found in the STATUS menu, the MO-180 also
outputs several error messages on the LCD display. These messages are shown for
the complete duration of the error event and typically require immediate attention from
the user.
The following table shows all the error messages that the MO-180 can display
together with an explanation of what each message means.
Message
MODULATOR ERROR
TS BUFFER FULL
TS SYNC LOST
INVALID TS RATE
10MHz SYNC LOST
SFN ERROR CODE
DELAY TOO SMALL
DELAY TOO LARGE
NLPD OVERFLOW
1PPS SYNC ERROR
04/2008
Meaning
Generic error which usually implies circuitry
malfunction
Input TS bit rate too high leading to overflow
in the input buffer
The modulator has lost sync with the
transport stream input
In MFN slave mode the input bit rate is not
adequate
Unable to synchronise with the 10 MHz clock
reference
This is the SFN error code XXYYZZ
described on page 48
In SFN or MFN with local delay offset, the
total delay to apply to the transport stream is
smaller than the minimum latency of the
modulator and thus cannot be achieved
In SFN or MFN with local delay offset, the
total delay is greater than 1 second
Arithmetic overflow in the Non-Linear Pre-
Distorter due to out-of-range correcting
complex gains or to a crest factor greater
than 11 dB
In SFN, error in the 1pps internal count
usually caused by the 10 MHz and 1pps
references not being synchronised with a
common time base
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