Comtech EF Data CDM-425, Инструкция по установке и эксплуатации

Страница: 359 / 744

CDM-425 Advanced Satellite Modem
Revision 0
Serial Remote Control 8–35 MN-CDM-425
Parameter
Command
(Instruction
& Qualifier)
Length of
Arguments
Description of Arguments
Response to
Command
Query
(Instruction
& Qualifier)
Response to Query
Rx BERT
Pattern
RBP= 1 byte Command or Query.
Sets or returns Rx BERT Pattern, in the form x, where:
0=space
1=mark
2=1:1
3=1:2
4=63
5=511
6=2047 (DEFAULT)
7=2047R (or 2047 Alternate)
8=Mil-188
9=2^15-1
A=2^20-1
B=2^23-1
EXAMPLE: <0/RBP=6 (Rx BERT Pattern is 2047)
RBP=
RBP?
RBP#
RBP? RBP=x
(see Description of
Arguments)
BERT 10E-3
Error Insert
BKE= 1 byte,
0 or 1
Command or Query.
Inserts 10E-3 BER in the form x, where:
0=Off
1=On
EXAMPLE: <0/BKE=1
BKE=
BKE?
BKE#
BKE? BKE=x
(see Description of
Arguments)
BERT Restart
Monitor
BRM= None Command only.
This command takes no arguments. Forces restart of the BERT monitor.
EXAMPLE: <0/BRM=
BRM= N/A N/A
BERT Result in
bit errors
N/A 7 bytes,
numeric
Query only.
Returns BERT monitor results in bit errors.
NOTE: If bit errors exceed 9999999, then response to query is BRE=9999999.
N/A BRE? BRE=xxxxxxx
BERT Result in
average BER
N/A 6 bytes Query only
Returns the value of the average BER in the form a.bEcx, where:
x.x=Value
Ec=Exponent
x=Indicator of Sync Loss (see Note 1).
NOTES:
1) A “*” in last byte means there was a loss of pattern synchronization since last restart, but now is
synchronized. A “_” (space) in last byte means pattern synchronization is achieved.
2) Returns 999999 if there’s no sync in BERT monitor.
EXAMPLE 1: <0/BRR? >0/BRR=2.8E7 (indicates BER @ 2.8 x 10
-7
and in sync)
EXAMPLE 2: <0/BRR? >0/BRR=3.4E5* (indicates BER @ 3.4 x 10
-5
, and there was a Sync Loss)
N/A BRR? BRR=x.xEcx