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Table Of Contents
Cisco uMG9820 Technical Specifications
Cisco uMG9820 Technical Specifications
Table A-1 lists the technical specifications for the Cisco uMG9820.
Table A-1 Technical Specifications for the Cisco uMG9820
Characteristic Value Physical Dimensions1.72 in. high x 18.98 in. wide x 21.41 in. deep (43.7 x 444.5 x 342.9 mm)
Mounting standard1 RU, 19 in.
Weight17.9 lbs (8.1 kg) typical (fully loaded)
Electrical Input voltage100-240 VAC
Input frequency50-60 Hz
Input current3 A max. at 100 VAC input
AC power connectorIEC 320 standard 6.3-A power entry module, RFI filtered, with metric fuse holder
Standards EMI standardsCFR47: 2000, FCC Part 15, Subpart B for Class A
Industry Canada ICES-003 for Class A
Safety standardsCAN/CSA-C22.2 No. 60950-00, UL 60950
Agency approvalsRefer to Cisco uMG9820 QAM Gateway Regulatory Compliance and Safety Information
Environmental TemperatureOperating: 40-104ЧF (10-40ЧC)
Nonoperating: -40-158ЧF (-40-70ЧC)
Humidity (relative, noncondensing)Operating: 20 to 90%
Nonoperating: 5 to 95%
AltitudeOperating: sea level to 6562 ft (2000 M)
Nonoperating: sea level to 15,748 ft (4800 M)
Inputs Input interfaceRedundant 1+1 port configuration
SFP module connectors
LAN protocolIEEE 802.3z
Data rate per port1000 Mbps
Data formatUDP datagram encapsulation of MPEG-2 SPTS
Maximum of 256 MPEG-2 SPTS encapsulated in UDP/IP
Up to six PIDs per program (including ECM PID)
Up to seven 188-byte MPEG-2 packets per UDP datagram
3-4 Mbps per SPTS (nominal)
Processing features Function capabilityPID remapping
PID filtering
MPEG-remultiplexing
PCR restamping
MPEG-2 PSI extraction, generation, and insertion
Input network jitter buffer (user-settable latency; max. 70 milliseconds)
Network management Management connectorsRJ-45: 10BASE-T/100BASE-TX Ethernet for network management system (NMS)
RJ-45: 10BASE-T/100BASE-TX Ethernet for conditional access system (CAS)
EIA-232
Management protocolsBootP, DHCP
SNMP v1, v2c
TFTP
Telnet
Command-line interface (CLI)
RF output specifications Modulation format256QAM and 64QAM
Framing structure, channel coding, modulationPer ITU-T Recommendation J.83 Annex B
Output interfaceF-connector (75-ohm impedance, nominal)
Monitor interfaceMCX connector (50-ohm impedance, nominal)
Center frequency225-900 MHz
Frequency step size12.5 kHz
Frequency response256QAM: 12% square-root raised-cosine shaping
64QAM: 18% square-root raised-cosine shaping
Any 5-MHz band: +/- 0.25 dB
Any 7-MHz band: +/- 0.4 dB
Frequency accuracy over time/temperature+/- 20 kHz
Channel-to-channel level accuracy+/- 0.7 dB
Group delayAny 5-MHz band: 8 nsec p-p max.
Output levelsTotal average block1 power: 60 dBmV
Step size: 0.1 dB (typical)
Max. attenuated2 block power: 50 dBmV
Per-channel power: 57 dBmV
Gain control range50-60 dBmV block power
Return lossInband: > 14 dB; 13 dB above 750 MHz
Spurious emissions and noiseIn-channel, at max. power, center frequency +/- 3 MHz: < -48 dBc
Broadband (50-860 MHz): < -60 dBc (with respect to total block power, including harmonics)
IsolationRF chain to RF chain: < 50 dBc
Noise (phase)
(standard 6-MHz CATV channels, double sideband)1-10 kHz: < -40 dBc (< -50 dBc typical)
10-50 kHz: < -40 dBc (< -50 dBc typical)
50 kHz-3 MHz: < -51 dBc (< -55 dBc typical)
Noise (broadband)< -9 dBmV (block power at 60 dBmV, plus average noise from all channels outside +/- 24 MHz from the band edges)
Noise (modulated adjacent)
(2x dual-block channel-output version)+/- 3-3.75 MHz: < -58 dBc (-61 dBc typical)
+/- 3-3.75 MHz: < -59 dBc (-61 dBc typical)
+/- 9-15 MHz: < -60.5 dBc (-63 dBc typical)
1 A "block" represents the entire RF signal (12 MHz) from each QAM port. The signal consists of two adjacent 6-MHz-wide QAM channels.
2 An attenuator on the RF output provides up to 10 dB of attenuation (see "Gain Control Range," above).
Posted: Fri Oct 8 10:26:28 PDT 2004
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