DekTec DTE-3114 IP to 4x QAM - Manual (Page 18)

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