SDM-300A Satellite Modem
Remote Control Operation
Rev. 4
B–33
Corrected
BER Log
Command:
Response:
Examples:
<add/CBEL_'cr'
>add/CBEL_t.t;s1,s2,s3 ... sn'cr''lf']
[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;,,,,,,,2003,5207,10
10,<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.
Interface
Read Error
Status
Command:
Response:
<add/IRES_'cr'
>add/IRES_tttt_xn.nE-ee'cr''lf']
Where:
tttt = FRM (FRAME) or 2047 (indicates type of error being
read).
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).
This command returns frame or 2047 error rate. The 'IRE_'
configuration command is used to select reading of frame or
2047 errors.
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.
Содержание SDM-300A
Страница 1: ...Part Number MN SDM300A IOM Revision 4 SDM 300A Satellite Modem Installation and Operation Manual...
Страница 33: ...Introduction SDM 300A Satellite Modem 1 14 Rev 4 This page is intentionally left blank...
Страница 36: ...SDM 300A Satellite Modem Installation Rev 4 2 3 Figure 2 1 Installation of the Mounting Bracket...
Страница 57: ...Operation SDM 300A Satellite Modem 3 4 Rev 4 This page is intentionally left blank...
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Страница 101: ...Operation SDM 300A Satellite Modem 3 48 Rev 4 This page is intentionally left blank...
Страница 118: ...SDM 300A Satellite Modem Operation Rev 4 3 65 This page is intentionally left blank...
Страница 169: ...Theory of Operation SDM 300A Satellite Modem 4 18 Rev 4 This page is intentionally left blank...
Страница 176: ...SDM 300A Satellite Modem Maintenance Rev 4 5 7 WITH NOISE WITHOUT NOISE Figure 5 4 Typical Eye Constellations...
Страница 189: ...Maintenance SDM 300A Satellite Modem 5 20 Rev 4 This page is intentionally left blank...
Страница 200: ...SDM 300A Satellite Modem Options Rev 4 A 11 Figure A 2 D I with Asynchronous Overhead Data Flow...
Страница 205: ...Options SDM 300A Satellite Modem A 16 Rev 4 Figure A 3 E1 Framing Formats...
Страница 206: ...SDM 300A Satellite Modem Options Rev 4 A 17 Figure A 4 T1 Framing Formats...
Страница 237: ...Options SDM 300A Satellite Modem A 48 Rev 4 Figure A 10 IDR Interface Block Diagram...
Страница 241: ...Options SDM 300A Satellite Modem A 52 Rev 4 Figure A 11 IBS Interface Block Diagram...
Страница 257: ...Options SDM 300A Satellite Modem A 68 Rev 4 CBA Figure A 19 Reed Solomon Codec Installation...
Страница 260: ...SDM 300A Satellite Modem Options Rev 4 A 71 CBA Figure A 20 Overhead Interface PCB Installation...
Страница 265: ...Options SDM 300A Satellite Modem A 76 Rev 4 Figure A 24 8 Channel Multiplexer Installation...
Страница 273: ...Options SDM 300A Satellite Modem A 84 Rev 4 Figure A 26 Flex Mux Multiplexer Installation...
Страница 275: ...Options SDM 300A Satellite Modem A 86 Rev 4 This page is intentionally left blank...
Страница 330: ...SDM 300A Satellite Modem Remote Control Operation Rev 4 B 55...
Страница 362: ...Specifications SDM 300A Satellite Modem C 32 Rev 4 Figure C 7 8PSK BER Specification Curves 1544 kbit s...
Страница 366: ...Specifications SDM 300A Satellite Modem C 36 Rev 4 1 1 Rate Specification Figure C 9 Uncoded 1 1 BPSK QPSK and OQPSK...
Страница 388: ...Specifications SDM 300A Satellite Modem C 58 Rev 4 This page is intentionally left blank...
Страница 392: ...Glossary SDM 300A Satellite Modem g 4 Rev 4 This page is intentionally left blank...
Страница 398: ...Index SDM 300A Satellite Modem i 6 Rev 4 This page is intentionally left blank...