GE MDS Mercury Series, Reference Manual, Page: 73 / 196

05-4446A01, Rev. C Mercury Reference Manual 65
Advanced Configuration Menu
Invisible place holder
Figure 3-31. Advanced Configuration Menu
•
Adaptive Modulation
—Enables automatic selection of modulation
and FEC rate based on SNR. [
enabled, disabled; enabled
]
•
Protection Margin
—A number of decibels of SNR added to the
minimum SNR required for a given modulation and FEC rate.
See
“Modulation Protection and Hysteresis Margins” on
Page 66
for more information. [
0-50; 3
]
•
Hysteresis Margin
—A number of decibels of SNR added to the
maximum SNR required before shifting to the next higher mod-
ulation and FEC rate. See
“Modulation Protection and Hyster-
esis Margins” on Page 66
for more information. [
0-50; 3
]
•
Data Compression
—This setting determines whether over-the-air
data packets will be compressed. [
enabled, disabled; enabled
]
•
Max Modulation
—Sets the highest modulation speed the trans-
ceiver will use.
[
BPSK, QPSK-1/2, QPSK-3/4, 16QAM-1/2, 16QAM-3/4, 64QAM-2/3,
64QAM-3/4; QAM16-3/4
]
•
Cyclic Prefix
—Amount of additional information added to the
over-the-air packets to mitigate the effects of channel multipath.
[
1/4, 1/8, 1/16,1/32; 1/16
]
•
Channel Type
—This parameter, available on Access Point units,
must be set appropriately according to the signal conditions of a
network. For installations with strong signals, low interference,
and minimal fading, set the Channel Type parameter to
Static
.
This setting is generally appropriate for Access Points whose
Remotes are in fixed locations. It supports a large offered pay-
load with high packet rates.
For installations with significant interference and fading or
nomadic/mobile Remotes, set the Channel Type parameter to
Dynamic
. [
Static, Dynamic; Static
]