User's Manual Part 2

72 Mercury Reference Manual 05-4446A01, Rev. D
Advanced Configuration Menu
Invisible place holder
Figure 3-39. 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 73 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 73 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;
QAM16-3/4]
• Cyclic Prefix (AP only)—Amount of additional information
added to the over-the-air packets to mitigate the effects of chan-
nel multipath. [
1/4, 1/8, 1/16,1/32; 1/16]
• Channel Type (AP only)—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 payload 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]