SBG6782: Signal Levels

What are the acceptable RF Signal levels for the SBG6782 Gateway?

To Verify Signal Levels

1. Obtain the Username and Password on the black label on the side of the SBG6782.  They will be used for accessing the GUI.
2. Launch a web browser, such as Internet Explorer, Firefox, or Safari.  Enter http://192.168.0.1 into the address box.
   
   NOTE: By default the LAN IP address is 192.168.0.1.  If the default address has been changed, enter the custom address in the address box.
    
3. Enter the username and password in the appropriate fields, and click the Login button.  The Status page appears.
   
   
    
4. In the Downstream Bonded Channels section, verify Power levels are within the acceptable range of - 15 dBmV to + 15 dBmV for each downstream channel. 
5. In the Downstream Bonded Channels section, identify the Modulation and Power to find verify SNR levels are within the acceptable range for each downstream channel. 
   
   Acceptable SNR Levels (dB): 
   If QAM64, SNR should be 23.5 dBmV or greater. 
   If QAM256 and DPL( -6 dBmV to +15 dBmV) SNR should be 30 dBmV or greater. 
   If QAM256 and DPL(-15 dBmV to -6 dBmV) SNR should be 33 dBmV or greater.   
    
6. In the Upstream Bonded Channels section, identify the number of Channels, Type, Symbolic Rate to find verify Upstream Power levels are within the acceptable range for each upstream channel. 
   
   Acceptable Upstream Power Levels (dBmV):
    

   Upstream Transmit Power Level
   Channel	US Channel Type	Symbol Rate	Acceptable US Power Level
   Single	TDMA	1280 Ksym/sec	+61 dBmV to 45 dBmV
   	ATDMA	2560 Ksym/sec	+58 dBmV to 45 dBmV
   		5120 Ksym/sec	+57 dBmV to 45 dBmV
   Two	TDMA	1280 Ksym/sec	+58 dBmV to 45 dBmV
   	ATDMA	2560 Ksym/sec	+55 dBmV to 45 dBmV
   		5120 Ksym/sec	+54 dBmV to 45 dBmV
   Three or more	TDMA	1280 Ksym/sec	+55 dBmV to 45 dBmV
   	ATDMA	2560 Ksym/sec	+52 dBmV to 45 dBmV
   		5120 Ksym/sec	+51 dBmV to 45 dBmV

7. Refresh the page at least twice to identify variations in SNR, Downstream Power, and Upstream Power.   
   
   NOTE: If the either of the signal levels are outside of the acceptable range, power cycle or factory reset the modem. 
    
8. Contact the cable provider to adjust the signal level to the acceptable level range.