Comtech EF Data SNM-1002 User Manual
Page 148
SNM-1002 LinkSync
Modem
Revision 2
Remote Control Operation
MN/SNM1002.OM
A–22
Corrected
BER
Command:
Response:
Where:
x = < or > (data modifier to indicate that the error
rate is less than or greater than the returned
value).
m.m = 1.0 to 9.9 (error rate mantissa).
ee = 1 to 99 (error rate exponent).
Notes:
1.
The 'x' (< or >) parameter is only
returned if the error rate has exceeded the
computational resolution of the system.
2.
'No Data' is returned if the error rate
cannot be calculated.
3.
'Sampling' is returned if not enough data
is currently available to calculate the error rate.
Corrected
BER Log
Command:
Response:
Examples:
[No new compiled data from last
poll]
>add/CBEL_1.0'cr''lf']
[Momentary lock in 32 time intervals:
2.0E-3, 5.2E-7, 1.0E-10, <1.0E-12]
>add/CBEL_1.0;,,,,,,,2003,5207,101
0,<1012,,,,,,,,,,,,,,,,,,,,,'cr''lf']
Where:
t.t = Time between corrected BER samples in
seconds ('0.1' to '9.9').
; = At least one data point has been logged.
s1 to sn = Corrected BER samples in the format
of (xmmee).
x = The optional data modifier '<' or '>' (less than
or greater than).
mm = The corrected BER mantissa ('10' for 1.0
to '99 for 9.9).
ee = The corrected BER negative exponent ('00'
to '99').
Error data (samples) are compiled at the nominal
system rate indicated by the time parameter (t.t).
The samples are stored in a thirty-two-element
FIFO. When the 'CBEL_' command is received,
the samples in the FIFO are formatted and
returned as indicated.
The FIFO is then
flushed. If the FIFO becomes full, the oldest
sample will be lost as the current sample is
written.
Notes:
1.
The most recent sample is represented
by 'sn' while the least recent sample is
represented by 's1'.
2.
Data delimited by a comma (',') will be
returned for all time intervals logged.
3.
The optional data modifiers '>' and '<'
are only present if the error rate exceeds the
computational resolution of the system.