 |
 |
 |
 |
 |
|
 |
 |
|||||
 |
 |
 |
||||
  |
||||||
 |
 |
 |
 |
 |
 |
|
 |
||||||
|
PCX1100 Product Specification
The following defines the technical specifications for the PCX1100 Cable Modem product. | ||||
|
Features: |
| a. | CableLabs®
Certified™ DOCSIS v1.0
|
| b. | DOCSIS 1.1-based |
| c. | DOCSIS compliant ranging |
| d. | DOCSIS compliant contention and reservation mixed protocol including fragmentation |
| e. | DOCSIS 1.0 (BPI) and 1.1 (BPI+) compliant security |
| f. | Forward Error Correction (Reed-Solomon method) |
| g. | Small size and low power consumption |
| h. | OA&M functions support (through SNMP) |
| i. | Supports IEEE802.3/Ethernet 10BASE-T Interface |
| j. | Supports up to 16 CPEs (16 MAC addresses) |
| k. | Supports
packet filtering
|
|
Block Diagram 
|
|
Receiver Specification |
|
| Physical speed: | 5.056941
Msym/sec (64QAM) 5.360537 Msym/sec (256QAM) |
| Modulation technique: | 64QAM and 256QAM |
| Bandwidth: | 6 MHz |
| Roll-off ratio: | root 18% cosine (64QAM) root 12% cosine (256QAM) |
| Frequency range: | 88 to 860 MHz (edge-to-edge) |
| Frequency channel: | HRC, IRC or STD |
| Frequency selection: | automatic scanning |
| Input signal level: | -15 dBmV to +15 dBmV (Automatically Gain Controlled by CM) |
| Carrier lock range: | +/-30 KHz |
| Return loss: | 6 dB |
|
Transmitter Specification |
|
| Physical speed | variable: 2.56, 1.28, 0.64, 0.32, 0.16 Msym/sec |
| Modulation technique: | QPSK and 16QAM |
| Bandwidth: variable: | 3.2, 1.6, 0.8, 0.4, 0.2 MHz |
| Roll-off ratio: | root 25% cosine |
| Frequency range: | 5 to 42 MHz (edge-to-edge) |
| Frequency channel: | voluntary frequency (1Hz step) |
| Frequency selection: | controlled by CMTS |
| Output signal level: | (Output signal level of CM is automatically controlled by power ranging function) |
| Range: | +8 dBmV to +55 dBmV (16QAM) +8 dBmV to +58 dBmV (QPSK) |
| Step: | 1dB |
| Control: | controlled by CMTS |
| Frequency stability: | ±50 parts per million |
| Carrier ON/OFF ratio: | > 72dB |
| Spurious level: | |
| (measured in 160kHz) | Inband:
-40dBc Adjacent Band: -45dBc 3 or Fewer Carrier-Related Frequency Bands (such as second harmonic, if<42MHz): -47dBc Bands within 5 to 42 MHz (excluding assigned channel, adjacent channels, and carrier-related channels): -53dBc |
| (measured in 4MHz) | 42
to 54MHz: -40dBc 54 to 88MHz: -30dBmV 88-860MHz: -45dBmV |
|
Protection circuit: |
Open/Short, prevents irregular continuous transmission |
|
OSS |
|
| 1)
Support SNMP/ICMP protocol 2) Support MIBBII/MCNS MIB/Toshiba MIB |
|
|
Interfaces |
|
| PC Interface: | IEEE802.3/Ethernet 10BASE-T |
| Cable Interface: | F type female 75W |
|
Other Specifications |
|
| Front indicator (LED): | Power, Cable, PC Link, Data and Test |
| Power supply: | AC-DC
adapter. AC Input; 120V +/-10 percent 60Hz |
| Power consumption: | 8 W |
| Dimensions (without AC-DC Adapter): | |
| height: | 5.96" |
| width: | 1.96" |
| depth: | 8.07" |
| Weight: | 2 lb. |
| Safety: | UL1950, UL1310 (AC-DC adapter) |
| Emissions: | FCC part 15 class B |
| Environment: | Operating temperature: 32°F (0°C) to 104°F (40°C) |
|
Operating humidity: 10% to 90% Non condensing Storage temperature: -4°F (-20°C) to 40°F (60°C) |
|
|
Requirements for HFC (HFC Environment) The stable operating is guaranteed under the following HFC Environment: |
|
| Upstream | |
| Frequency range: | 5MHz - 42MHz |
| Occupied bandwidth: | Depends
on Symbol Rate (0.2, 0.4, 0.8, 1.6, 3.2MHz) |
| Carrier to noise ratio: | Not less than 25dB |
| Carrier to ingress power ratio: | Not less than 25dB |
| Carrier to interference ratio: | Not less than 25dB |
| Carrier hum modulation: | Not greater than -23dBc |
| Burst noise: | Not longer than 10usec at a 1kHz average rate |
| Amplitude ripple: | 0.5dB/MHz |
| Group delay ripple: | 200nsec/MHz |
| Micro-reflections—single echo: | -10dBc@<=0.5usec -20dBc@<=1.0usec -30dBc@>1.0usec |
| Seasonal and diumal signal level variation: | Not greater than 8dB min to max |
| Downstream | |
| Frequency range: | 88MHz - 860MHz |
| Occupied bandwidth: | 6MHz |
| Carrier to noise ratio: | Not less than 35dB |
| Carrier to interference ratio for total power: | Not less than 35dB |
| Composite second order distortion: | Not greater than -50dBc |
| Composite triple beat distortion: | Not greater than -50dBc |
| Cross-modulation level: | Not greater than -40dBc |
| Amplitude ripple: | 0.5dB/6MHz |
| Group delay ripple: | 75nsec/6MHz |
| Micro-reflections bound for dominant echo: | -10dBc@<=0.5usec -15dBc@<=1.0usec -20dBc@<=1.5usec -30dBc@>1.5usec |
| Carrier hum modulation: | Not greater than -26dBc |
| Burst noise: | Not longer than 25usec at a 10Hz average rate |
| Seasonal and diumal signal level variation: | 8dB |
| Signal level slope, 50-750MHz: | 16dB |
| Maximum analog video carrier level at the CM input, inclusive of above signal level variation: | 17dBmV |
| Lowest analog video carrier level at the CM input, inclusive of above signal level variation: | -5dBmV |
<BACK TO THE PCX1100 MAIN PAGE ©2001
Toshiba America Information Systems, Inc.
|
