Scientific Atlanta CME090W, User Manual, Page: 41 / 42

Appendix: Specifications
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RF Specifications(US)
Downstream Upstream
!
Operating Frequency Range 88-860MHz 5-42MHz
!
Frequency Channel HRC, IRC, STD
!
Frequency Selection Auto Scanning Controlled by Head end
!
Bandwidth 6MHz Programmable (200*N KHz)
N=1, 2, 4, 8, 16
!
Characteristic Impedance 75
Ω
Nominal 75
Ω
Nominal
!
Signal Level Range -15 to +15dBmV/64QAM +8 to +58dBmV/QPSK
-15 to +15dBmV/256QAM +8 to +55dBmV/16QAM
!
Modulation 64QAM/256QAM QPSK/16QAM
!
Symbol Rate 5.056941/5.360537 160/320/640/1280/2560
Msym/sec Ksym/sec
!
Maximum Bit Rate 42.88Mbps/256QAM 10.24Mbps/16QAM
30.34Mbps/64QAM 5.12Mbps/QPSK
!
Forward Error Correction (FEC) RS (128,122)/Trellis Reed Solomon
!
Bit Error Rate (BER) 1
×
10
-8
@ C/N=23.5dB, 64QAM with FEC
1
×
10
-8
@ C/N=30dB, 256QAM with FEC, received power = -6dBmV to
+15dBmV
1x10
-8
@ C/N=33dB, 256QAM with FEC, received power = -15dBmV to –
6dBmV
Wireless LAN
!
Data Encryption 64/128 bit WEP
!
Standard Compliance IEEE 802.11b
!
Operating Frequency Range 2.4GHz (2400-2483.5MHz) ISM Band
N.America/FCC: 2.412~2.462GHz (11Channels)
Europe CE/ETSI: 2.412~2.472GHz (13Channels)
Japan : 2.412~2.484GHz (14Channels)
!
Modulation 2.4 GHz Direct Sequence Spread Spectrum (DSSS) ,
CCK(11Mbps)
!
Regulation Domain FCC / ETSI / IC / Spain / France / Telec
!
Numbers of selectable channels Up to 14 (depend on Regulation Domain)
!
Antenna 2 internal PCB antenna
!
Media Access Protocol CSMA/CA with ACK for uni-cast data frame
CSMA/CA for multi-cast/broadcast data frame
!
Tx Data Rate 11 Mbps, Auto Fall-Back
!
Range in Open Space 11Mb/100m
!
Range in Closed Office 11Mb/35m
!
Receiver Sensitivity -80 dbm @ 11Mbps