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128
Mercury Reference Manual
05-4446A01, Rev. C
Table 3-11. Recommended Settings for Common Scenarios
For Fixed Locations, where best combination of range and throughput is desired.
AP
Remote
Units
Notes
Rad
io Co
nf
igu
rat
ion
Network
Name
User
discretion
User
discretion
AP and Remote must match.
Transmit Power
(AP)/
Max Transmit Power (RM)
30
30
dBm
In most cases, power can be set to +30 dBm
and left alone. Setting it lower helps control
cell overlap.
Receive Power
-70
N/A
dBm
Sets AP receiver for medium gain. Typical
range: -60, -80 dBm.
Freq
uen
cy Co
ntro
l
Frequency Mode
Static Hopping
Static Hopping
Frame Duration
20
20
ms
Changing to 10 ms lowers latency. 5 and 8
ms selections not functional for this release.
Hop Pattern
A, B, C, D
A, B, C, D
AP and RM must match.
Hop Pattern
Offset
0-13 or 0-6
0-13 or 0-6
AP and RM must match.
Channel
Selection
User
discretion
User
discretion
Disable channels with interference. AP and
RM must match.
TDD Sync Mode
GPS Required
N/A
GPS Antennas must be connected to both
AP and RM.
Ad
vanc
e
d Co
nf
igurat
ion
Adaptive
Modulation
Enabled
Enabled
Protection
Margin
3
3
dB
Hysteresis
Margin
3
3
dB
Data
Compression
Enabled
Enabled
Gives best throughput numbers, but may
hide true performance if only tested with
PING or Text File FTP.
Max
Modulation
QAM/16-3-4
QAM16-3/4
Best combination of range and throughput.
Cyclic Prefix
1/16
N/A
Best throughput setting.
Channel
Type
Static
N/A
Less periodic ranging when channel type is
Static.
ARQ
Enabled
N/A
ARQ Block Size
256
N/A
bytes
ARQ Block
Lifetime
655
N/A
ms
These 3 settings make the max. no. of ARQ
retries =9.
(655 ms)/(35 ms + 35 ms = 9.35=>9
ARQ TX
Delay
35
N/A
ms
ARQ RX Delay
35
N/A
ms
Adaptive Split
Enabled
N/A
Maximizes one-way burst throughput.
Downlink%
50
N/A
%
If Adaptive Split is disabled, can set
downlink% to 15%–75%.
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