GE MDS Mercury Series Reference Manual page 136

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