User's Manual

MDS 05-3627A01, Rev. D LEDR Series I/O Guide 63
Example Response:
interface {Line}: e1
NOTE: 1E1 through 4E1 data rates are not supported when using the
EIA-530 interface. The maximum EIA-530 data rate is 768
kbps.
interleave Interleave
Usage:
interleave [1-12]
This command is used to set or display the interleave depth. The depth
range is 1–12 with settable values of 1, 2, 3, 4, 6 and 12. Default setting
for Subrate is 2, Default setting for Fullrate is 12. The interleave setting
must match at both ends of a radio link, or the link cannot synchronize
regardless of any other radio settings or signal strength. Larger inter-
leave settings cause longer link latency; in latency-sensitive applica-
tions, interleave value should be reduced to as small a value as is
possible while maintaining good link performance (See the
g821 demod
command).
Example Response:
interleave: 1
Background:
In digital communications, interference often occurs in the form of short
noise bursts. These bursts normally corrupt a series of consecutive bits.
Interleaving is a digital algorithm that allows Forward Error Correction
(FEC) to better handle bursts of noise. Interleaving reorders the data so
that the symbols that would normally be neighbors in a given block are
spread among multiple blocks. FEC works on a block of data of a spe-
cific size and can properly correct errors as long as the number of errors
is small enough. With interleaving, the number of errors that occur
within a single block is reduced, thereby allowing the FEC to more
effectively correct burst errors.
The value of the interleaver function should not be changed unless there
are latency limitations for the radio link. If low latency is required, then
the interleave can be changed, but the ability to correct for the influence
of burst-noise on the BER will be reduced.
ip Internet Protocol Settings
Usage:
ip [subcommand] [<argument>]