DTE-3114 – Networked Quad QAM Modulator
USER
MANUAL
24
ID
Settings error
Description / Remarks
2. Port is not valid
The selected port number is not valid (1 .. 65535).
3. IP-to-RF delay is out of range
The valid range is 0 .. 120ms.
4. Port numbers overlap
If FEC decoding is enabled for a TSoIP stream entering
the DTE-3114 on port x, then port numbers x+2 and x+4
are reserved for FEC packets and cannot be used by
other channels with the same source IP address.
5. FEC settings are not equal for all
channels
If two or more channels refer to the same TSoIP stream
(same source stream modulated on different frequencies),
then the FEC-decoding settings and IP-to-RF delays for
these channels must be equal to each other.
6.
Not used
7. Modulator settings are not
consistent
Settings error related to the “Modulator Settings” webpage and DTE-QAM-MIB:
ID
Settings error
Description / Remarks
1. Modulation standard is invalid
The modulation standard is not 0 (DVB-C), 1 (J.83 Annex
B) or 2 (J.83 Annex C).
2. QAM mode is invalid
3. Symbol rate is out of range
4. Interleaver I is out of range
5. Interleaver J is out of range
6. Frequency is out of range
7. Overall spectrum cannot be wider
than 32 MHz
The difference between the highest carrier frequency and
the lowest carrier frequency may not be greater than
24MHz.
8. Channel frequencies must
increase monotonically
Channel carrier frequencies cannot be entered arbitrarily:
The frequency of the first channel must be lower than that
of the second channel, etc.
9. RF level is out of range
The output level, which is the sum of the output levels of
the four modulator channels, is outside the valid range.
10. Modulation standards are not
equal for all channels
To satisfy hardware constraints, each channel must
operate in the same QAM standard (DVB-C, …).
11. QAM modes are not equal for all
channels
Idem for QAM mode (64-QAM, …).
12. Spectral inversion settings are not
equal for all channels
Idem for spectral inversion.
13. Symbol rates are not equal for all
channels
Idem for symbol rate.
14. Interleaver settings are not equal
for all channels
Idem for interleaver settings (J.83 Annex B only).
15. Combination of interleaver I and The combination of interleaver parameters I and J is not
