DTE-3114 – Networked Quad QAM Modulator
USER
MANUAL
18
Variable
Description
Web
SNMP
SNMP traps
Enable
Enable or disable generation of SNMP traps
R/W
R/W
Community
The SNMP agent will insert this string in traps to act as an
elementary password
R/W
R/W
Destination IP
address
IP address where SNMP traps are sent to
R/W
R/W
Destination IP port
IP port number where SNMP traps are sent to
NA
R/W
3.2.3 SMPTE Settings
Parameters that control the reception of IP streams. “SMPTE” comes from SMPTE 2022, the standard
describing the encapsulation of Transport Packets in IP packets.
Variable
Description
Web
SNMP
Channel enable
Enable or disable a channel
R/W
R/W
Addressing method
IP addressing method: unicast or multicast reception
R/W
R/W
Multicast address
Specifies the IP address of the multicast group to join
R/W
R/W
IP port
Specifies the IP port number
R/W
R/W
FEC decoding enable
Enable or disable FEC reconstruction. If enabled, the
DTE-3114 will attempt to recover lost IP packets. Error
recovery is only possible if the transmitter uses the RTP
protocol with FEC packets
R/W
R/W
IP-to-output delay
The desired delay (in ms) between the reception of an IP
packet and the data leaving the channel More delay will
allow the DTE-3114 to cope with more IP jitter. The IP-to-
output delay must be high enough in order to enable FEC
decoding. See section 4.3. for a detailed description.
R/W
R/W
Settings status
Status of the SMPTE settings. The status is either 'ok' or an
error indication. Refer to section 3.5 for a list of errors.
RO
RO
3.2.4 Modulator Settings
In the SNMP, the modulator settings in the MIB should be set for each of the 4 channels, even if the
setting must have the same value for all 4 channels.
Variable
Description
Web
SNMP
Channel spacing
Difference in MHz between the centre frequencies of two
consecutive channels
R/W
NA
Frequency
The centre frequency of the channel
R/W
R/W
Modulation standard
The modulation standard of the channel (DVB-C / J.83
Annex B / J.83 Annex C )
R/W
R/W
QAM mode
The QAM mode of the channel (the number of
constellation points)
R/W
R/W
Spectral inversion
Enable or disable spectral inversion
R/W
R/W
