Cisco Cisco D9804 Multiple Transport Receiver インストールガイド

 

78-4042990-01 Rev B 

117 

 

7  Select the Stop Bits (1 or 2) for the RS-232 Telemetry interface on the rear panel. 
8  Click Save. 

 

Telemetry output is limited to broadcasting specific types of status every 30 seconds, 
or according to the configured interval. Four different types of messages can be 
output: RF status, Temperature, PSU status and Fan speed. The four different types 
of messages are described below. 

Notes:  

 

Output interval may vary by 1 or 2 seconds depending on the system load. 

 

Data output is not necessarily clustered but can be spread throughout the 
interval. 

 

Data content is a fixed format. 

 

RF Status Messages 

Examples of RF status messages. 

2010-05-21 09:56:10 :- TLM:RF 1<Lock State=0  Dlnk Freq=12030000  Symbol 
Rate=320000  Signal Level=<-75  C/N=N/A> 

2010-05-21 09:56:10 :- TLM:RF 2<Lock State=0  Dlnk Freq=12100000  Symbol 
Rate=320000  Signal Level=<-75  C/N=N/A> 

2010-05-21 09:56:10 :- TLM:RF 3<Lock State=0  Dlnk Freq=12170000  Symbol 
Rate=310000  Signal Level=<-75  C/N=N/A> 

2010-05-21 09:56:10 :- TLM:RF 4<Lock State=1  Dlnk Freq=12250000  Symbol 
Rate=308000  Signal Level= -59  C/N=>20.0> 

Lock State 

 0 = no lock, 1 = lock 

Dlnk Freq 

Downlink frequency in kHz 

Symbol Rate 

Symbol rate in hundreds of Hertz 

Signal Level 

RF signal level in dBm 

C/N 

RF C/N in dB.  

Note: This is NOT margin, but tuner measured C/N.