Cisco RF Gateway 1 Modules, Configuration Manual

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Electrical Specifications
78-4025112-01 Rev H0 253

Range
Channel edges between 45 and 1000 MHz
(tunable)
 Step size
1 kHz
 Stability
± 3 ppm
 Accuracy
± 3 ppm
Channel bandwidth 6, 7 or 8 MHz depending on QAM standard
Level

Range
Quad Mode: 54 dBmV RMS Max per QAM
channel in 0.1 dB steps
Triple Mode: 55 dBm V RMS Max per QAM
channel on 0.1 dB steps
Dual Mode: 57 dBmV RMS Max per QAM
channel in 0.1 dB steps
Single Mode: 61 dBmV RMS Max per QAM
channel in 0.1 dB steps

Stability
± 1 dB

Accuracy
± 1 dB
Return loss > 14 dB 45-750 MHz
> 13 dB 750-870 MHz
> 12 dB 870-1000 MHz
Per DOCSIS 3.0 DRFI specification CM-SP-
DRFI-103-060106
Signal Specifications
Item Specification
Channel encoding Randomization, Reed-Solomon, Trellis and
Interleaving according to ITU-T Annex A, B or
C
MER (before equalizer) ≥ 40 dB (at RF)
MER (after equalizer) ≥ 45 dB (at RF)
BER (256 QAM) ≤ 5x10-9 (ITU-A/C pre FEC)
≤ 1x10-13 (ITU-B pre FEC/post trellis)
Bandwidth 6, 7 or 8 MHz (transmission standard
depending)
QAM constellation 64 & 256 QAM