Comtech EF Data SDM-650B Installation And Operation Manual page 333

SDM-650B Satellite Modem
G.6.4.5.6.2 Corrected BER
Command:
Response:
Example:
Request Corrected BER from modem 19.
Command:
Response:
Notes:
1. Corrected BER limits are lower < 1E-8, upper > 01E-3.
2. "No Data" is returned if no carrier is detected (decoder not locked).
G.6.4.5.7 E
The E
b
Command:
Response:
Example:
Request E
Command:
Response:
Notes:
1. E
2. "No Data" is returned if no carrier is detected (decoder not locked).
G.6.4.5.8 Modulator Rate
Command:
Response:
Note: The parameters "nnn_mmmm.m" may be replaced by "N/A" to indicate "no
assignment."
Rev. 5
<add/CBER_"cr"
>add/CBER_nE-m"cr""lf"]
<19/CBER_"cr"
>19/CBER_2E-5"cr""lf"]
/N
b 0
/N status command causes the E
0
<add/EBN0_"cr"
>add/EBN0_n.ndB"cr""lf"]
/N ratio from modem 2.
b 0
<2/EBN0_"cr"
>2/EBN0_6.2dB"cr""lf"]
/N limits are lower < 3.2 dB, upper > 9.7dB.
b 0
<add/MR_"cr"
>add/MR_nnn_mmmm.m"cr""lf"]
Where:
nnn = 1/2, 3/4, 7/8, or BP12 (Coder rate).
mmmm.m = 9.6 to 4080.0 (Data rate).
CBER = 0.00002 errors/bit
/N ratio to be returned. E
b 0
Eb/N0 = 6.2 dB
Trojan Interface
/N is returned in dB.
b 0
G–37