Products > Telecommunication > Equipment > HFC(Hybrid Fiber Coaxial)

  • Cable Modem_Type I

    케이블 모뎀_타입 I

    ∙ Brings you the highest performance of DOCSIS 2.0 technology and field proven reliability in a compact housing.
    ∙ The TFO-CM-2B is the fourth generation cable modem from TFO which supports DOCSIS 2.0 operation.
    ∙ The cable modem is DOCSIS 2.0 compliant based on the Broadcom BCM3349. It is fully interoperable with all CMTS models available in the market today. It is also backwards compatible to support DOCSIS 1.0/1.1 operation. DOCSIS 2.0 can be used to support up to 30Mbps upstream and 43Mbps downstream operation.
    ∙ The modem incorporates various proprietary algorithms to improve the scanning as well as signal acquisition time. Also the hardware is designed so that internal noise tolerance allows the modem to perform at it’s best even in noisy cable network conditions.

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Specification

Classification TFO-CM-2B_Downstream(Receiver) TFO-CM-2B_Upstream(Transmitter)
Frequency Range 88MHz ~ 860MHz 5MHz ~ 65MHz
Channel Bandwidth 6 MHz(DOCSIS) / 8MHz(EuroDOCSIS) 200K, 400K, 800K, 1.6M, 3.2M, 6.4MHz
Modulation 64QAM/256QAM QPSK, 8QAM, 16QAM, 32QAM, 64QAM, 128QAM(S-CDMA Only)
Symbol Rate  5.057/5.361Msymbols/sec  160, 320, 640, 1280, 2560,5120Ksymbols/sec
Bits per Symbol 64QAM : 6 bits / 256QAM : 8 bits QPSK : 2 bits
Bits per Symbol 64QAM : 6 bits / 256QAM : 8 bits 8QAM : 3 bits
Bits per Symbol 64QAM : 6 bits / 256QAM : 8 bits 16QAM : 4 bits
Bits per Symbol 64QAM : 6 bits / 256QAM : 8 bits 32QAM : 5 bits
Bits per Symbol 64QAM : 6 bits / 256QAM : 8 bits 64QAM : 6 bits
Bits per Symbol 64QAM : 6 bits / 256QAM : 8 bits 128QAM : 7 bits
Data Rate 30Mbits/sec(64QAM) / 43Mbits/sec(256QAM)  0.32 ~ 5.12Mbs(QPSK)
Data Rate 30Mbits/sec(64QAM) / 43Mbits/sec(256QAM)  0.48~15.36Mbps(8QAM)
Data Rate 30Mbits/sec(64QAM) / 43Mbits/sec(256QAM)  0.64 ~ 10.24Mbs(16QAM)
Data Rate 30Mbits/sec(64QAM) / 43Mbits/sec(256QAM)  0.80~25.60Mbps(32QAM)
Data Rate 30Mbits/sec(64QAM) / 43Mbits/sec(256QAM)  0.96 ~ 30.72Mbps(64QAM, 128QAM)
Forward Error Correction RS(122,128) Trellis Reed Solomon
Carrier To Noise Ratio  64QAM : 23.5dB@BER<10^-5 -
Carrier To Noise Ratio  256QAM : 30dB@BER<10^-5 -
Input Power -15dBmV ~ +15dBmV -
Output Power  - TDMA : +8 to +54 dBmV (32QAM, 64QAM)
Output Power  - TDMA : +8 to +55 dBmV (8QAM, 16QAM)
Output Power  - TDMA : +8 to +58 dBmV (QPSK)
Output Power  - S-CDMA : +8 to +53 dBmV (all modulations)
RF Interface 75Ω F-type female connector 75Ω F-type female connector
Data Interface RJ45 Ethernet RJ45 Ethernet
LED 6 total(pwr, pc, tx, rx, sync, rdy) 6 total(pwr, pc, tx, rx, sync, rdy)
Power Dissipation < 6 Watts < 6 Watts
Power  12V/1A adaptor 12V/1A adaptor
Dimension(mm (in)) 110 x 125 x 30 (4.3 x 4.9 x 1.2) 110 x 125 x 30 (4.3 x 4.9 x 1.2)
Weight 0.3Kg 0.3Kg
Operating Environment  0~+40℃ (32~104℉), 10~90%(non-condensing) 0~+40℃ (32~104℉), 10~90%(non-condensing)