Dibsys Cable Moderm
Overview
DOCSIS system include CMTS(Headend cable network ) and CM(user end).The main function of DOCSIS Cable Modem system is transparently transmitting IP packets between the front end and the user end.
Technical principle
After the Modem Cable power, the downlink frequency of the front end is automatically searched,
and the downstream frequency is found, the uplink channel is determined from the downlink data.CMTS is connected with the front-end device, and exchange information, including the upstream level, the Dynamic Host Configuration Protocol (DHCP) and the IP address of the small file transfer protocol (TFTP) server, etc.Modem Cable has online features, even if the user does not use, as long as the power is not cut off, and the front end always to maintain the exchange of information, the user can always on-line.
Cable moderm has memory function, when the power is powered up, the data before the power storage are exchanged with the front data , and can quickly complete the search process.
CM online process
Key Features
l The definition is according to C-DOCSIS standard, meet europe DOCSIS 2.0/DOCSIS 2.0
l 1x10/100BASE-T RJ45 ethernet adaptive port,1 RF input
l Compact design:132x132x36mm
l Downstream frequency is 108MHz to860MHz,64QAM,256QAM and 1024QAM
l Upstream frequency is 5 to 65MHz, QPSK,8/16/32/64/128/256QAM
Technical specifications
Model | DB-CM212 |
Appearance | |
Interface | 1*RF interface |
10/100Mbps Gigabit Ethernet*2 | |
1*USB1.1 | |
Antenna | 1*External antenna,1*Internal antenna |
Button | 1*Reset button |
Power supply | DC 12V/1A |
Size | 200*160*29 mm |
Weight | 550g |
RF downlink parameters | |
Frequency Range | North American Standard:DOCSIS:88-1GHz |
Bandwith | 6-8MHz |
Modulation | 64,256QAM |
Bitrate | 30Mbps(64QAM+American Standard:DOCSIS) |
Input level | +/- 15 dBmV |
Input impedance | 75 Ohms |
RF uplink parameters | |
Frequency range | North Amercian Standard:DOCSIS:5-42MHz |
Bandwith | 200/400/800/1600/3200/6400 KHz |
Modulation | QPSK,8QAM,16QAM,32QAM,64QAM,128QAM,4U/S |
Bitrate | 30Mbps(TDMA),35MHz(S-CDMA) |
Output level | QPSK:+8-58dBmV |
Wireless Parameters | |
Wireless Protocol | IEEE802.11 b/g/n |
Frequency | 2.4GHz |
transmission rate | 150Mbps |
Protocol | |
Network | TCP/IP/UDP/ARP/ICMP/DHCP/TP/TFTP/SNMP/HTTP |
Application | SNMP V1/V2/V3 |
Management | Support Local WEB login |
Environment | |
Operation temperature | 0-40℃ |
Operation humidity | 5-95%RH Non-condensing |
LED indicators
Our advantages
1) High quality and low price
2) 3-year warranty
3) Perfect after-sale service and technical support