Cables to Go DOCSIS Cable Modem manual Appendix a Cable Modem Specifications, Parameter Value

DOCSIS 1.0/ 1.1 Equivalent Cable Modem

Appendix A: Cable Modem Specifications

Table 4. RF Downstream Specification

PARAMETER		VALUE	NOTES
Center Frequency		91 MHz to 857 MHz +/- 30 kHz
Level Range		-15 dBmV to +15 dBmV	One Channel
Symbol Rate		5.056941 Msym/sec (30 Mbps)	64QAM
		5.360537 Msym/sec (43 Mbps)	256QAM
Bandwidth		6 MHz
Total Input Power		<30 dBmV
Input Impedance		75 Ohms
Input Return Loss		>6 dB	88 MHz to 860 MHz
Table 5. RF Upstream Specification
PARAMETER		VALUE	NOTES
Frequency		5 MHz to 42 MHz	Edge to Edge
Level Range		+8 to +58 dBmV	QPSK
		+8 to +55 dBmV	16QAM
Modulation		QPSK and 16QAM
Symbol Rate	320K,640K,1280K,2560K,5120Kbps		QPSK
		640K,1280K,2560K,5120K,10240Kbps	16QAM
Bandwidth		200K, 400K, 800K, 1600K,	At Edges
		and 3200 KHz
Output Impedance		75 Ohms
Output Return Loss		>6 dB	5 MHz to 42 MHz

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