Atec Acterna-DSAM-6000 - Manual (Page 5)

DOCSIS Service Testing
The DSAM-6000 has a built in cable modem capable of performing quick and
accurate DOCSIS 2.0 RF and IP testing. This eliminates the need for a test modem
to verify cable modem connectivity or a computer to test the customer premises
equipments connection.
Range and Registration
The DSAM-6000 can range and register with the headend CMTS to establish the
required configuration parameters and obtain a valid IP address on the network.
The DSAM’s range and registration test verifies that a specific portion of the line
can support high-speed data transmission. Ranging results show how much
margin remains before communications in both the up and down streams
become disabled. Registration results validate that the CMTS is distributing
correct configuration files and IP addresses.
DOCSIS IP Test
The DSAM performs IP tests including packet loss, throughput and ping over the
DOCSIS layer. The displayed results indicate which problems need to be tracked
down and fixed and those that should be reported as headend or IP troubles.
5
DSAM-6000 DIGITAL SERVICE ANALYSIS METER
A packet loss test shows how well the HFC transmits
RTP data packets. Using TruPacket SNMP community
strings the DSAM is able to view both the up and
down stream packet losses separately as well as the
SNR the CMTS is receiving.
Using the range screen a technician is able to see
what levels the DSAM’s cable modem is reading and
transmitting. This allows the tech to see how close the
customer’s cable modem would be to failing.