Specifications - Motorola AL 200 Installation Manual

Introduction
IP and MAC Layer

Specifications

Physical Layer
Specifications
Physical Layer
Property
Dynamic range
Symbol rate
Specifications
This section describes the specifications for the Motorola AL 200 Multi-User
Modem.
This table describes the IP and MAC layer specifications for the AL 200.
IP and MAC Layer
MAC performance
Upstream bandwidth request
Multicast
Filtering
This table describes the Physical layer specifications for the AL 200.
Physical Layer
Property
Impedance, return loss
Frequency range
Channel assignment
Channel bandwidth
This table describes the physical specifications for each modulation mode.
Transmitter
16QAM
+8 to +55 dBmV +8 to +58 dBmV
160, 320, 640, 1280, 160, 320, 640, 1280,
2560 Ksym/s 2560 Ksym/s
16 CPE MAC addresses and eight
downstream encryption SIDs
Four independent upstream transmit
controllers
256 multicast groups
272 IP filters
Specification
Upstream Transmitter Downstream Receiver
75 Ohms nominal, >6 dB
5 - 42 MHz
Variable center frequencies Standard, IRC, and HRC
200, 400, 800, 1600, and
3200 KHz
Specification
QPSK 64QAM
-20 to +15 dBmV
Typically -25 to
+15 dBmV
5.056941 Msym/s 5.360537 Msym/s
Appendix A
Specifications
Specification
75 Ohms nominal, >6 dB
91-857 MHz
6 MHz for 64QAM and
256QAM
Receiver
256QAM
-15 to +15 dBmV
Typically -20 to
+15 dBmV
A-1