Cirronet HopNet 10 Series, Руководство пользователя

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Table of Contents
800281 Rev. B HopNet Family of Products v
Introduction .................................................................................................................................................. 30
Design Features ........................................................................................................................................... 30
Remote Pin-Out, RS-232 ............................................................................................................................... 31
Remote Pin-Out, RS-485 ............................................................................................................................... 32
Cable Interface ............................................................................................................................................. 33
Aiming the Antenna and Placing the Remote ................................................................................................. 33
Technical Specifications ............................................................................................................................... 34
T
YPICAL
H
OP
N
ET
A
PPLICATIONS
...................................................................................................................... 36
Introduction .................................................................................................................................................. 36
Point to Multipoint ....................................................................................................................................... 36
Point-to-Point ............................................................................................................................................... 37
CHAPTER 2 FUNCTIONAL DESCRIPTION ................................................................................................. 39
O
VERVIEW
........................................................................................................................................................ 39
Introduction .................................................................................................................................................. 39
N
ETWORK
C
OMMUNICATION
............................................................................................................................. 40
Introduction .................................................................................................................................................. 40
Synchronizing the Base with the Remotes ...................................................................................................... 40
Data Transmission ........................................................................................................................................ 40
Channel Access ............................................................................................................................................ 41
Full Duplex Communication ......................................................................................................................... 42
Error-free Packet Transmission Using ARQ .................................................................................................. 43
P
OINT
-T
O
-P
OINT
N
ETWORKS
............................................................................................................................. 44
Introduction .................................................................................................................................................. 44
Throughput ................................................................................................................................................... 44
M
ULTIPOINT
N
ETWORKS
................................................................................................................................... 45
Introduction .................................................................................................................................................. 45
Protocol Modes Definitions .......................................................................................................................... 47
Packet Formats ............................................................................................................................................ 48
Data Packet .................................................................................................................................................. 48
Connect Packet ............................................................................................................................................. 49
Disconnect Packet (base only, receive only) ................................................................................................. 49
Transparent Broadcast Network .................................................................................................................... 50
Typical Point-to-Multipoint Networks ........................................................................................................... 51
M
INIMIZING
L
ATENCY
...................................................................................................................................... 54
Introduction .................................................................................................................................................. 54
Data Rates .................................................................................................................................................... 54
Packet Size ................................................................................................................................................... 54
Dwell Time ................................................................................................................................................... 54
M
INIMIZING
P
OWER
C
ONSUMPTION
................................................................................................................... 55
Introduction .................................................................................................................................................. 55
Power Consumption ..................................................................................................................................... 55
Sleep Mode ................................................................................................................................................... 55
Duty Cycling ................................................................................................................................................ 55
CHAPTER 3 CONFIGURING THE NETWORK ............................................................................................ 57
O
VERVIEW
........................................................................................................................................................ 57
Introduction .................................................................................................................................................. 57
Five Command Types ................................................................................................................................... 57
I
NSTALLING THE
W
IN
C
OM
24 S
OFTWARE
........................................................................................................... 58
M
ODEM
C
OMMANDS
......................................................................................................................................... 59
S
ERIAL
C
OMMANDS
.......................................................................................................................................... 60
Set Data Rate Divisor ................................................................................................................................... 60
Set Protocol Mode ........................................................................................................................................ 61
N
ETWORK
C
OMMANDS
...................................................................................................................................... 62
Set Transceiver Mode ................................................................................................................................... 62