Sunrise Global CM250 IP 사용자 설명서

Chapter 5 

Ranging TFTP - Pass / Fail – Indicating whether the internal 
cable modem was able to download the TFTP file from the TFTP 
server. 

Ranging Emulator - Pass / Fail – Indicating whether the 
internal cable modem was able to gain a second IP address which 
is routable through the DHCP process. 

When the Uptstream Spectrum icon is in color, it means that the 
current file is an Upstream Spectrum test saved file that can be 
viewed and analyzed by clicking on the icon. When the icon is 
selected, the screen the Upstream Spectrum saved data is 
displayed (Figute 5-12). 

There are two views of the Upstream Spectrum, one to measure 
signal levels, such as TDMA upstream cable modem signals 
with C/I (carrier to ingress ratio) and C/N (carrier to noise ratio) 
measurements; and a second to measure the level of ingress and 
noise against a tolerance limit. The user may select the view that 
is desired by clicking on the Upstream or the Ingress button in 
the view section of the display.