105 Radio/Serial Telemetry Module
User Manual
Page
4
©
January 2004
CONTENTS
CHAPTER ONE INTRODUCTION
6
1.1 G
ENERAL
6
CHAPTER TWO INSTALLATION
9
2.1 G
ENERAL
9
2.2 A
NTENNA
I
NSTALLATION
(105U
UNITS ONLY
)
9
2.2.1
Dipole antenna.
10
2.2.3
Collinear antenna.
12
2.3 P
OWER
S
UPPLY
13
2.3.1
AC Supply
13
2.3.2
DC Supply
13
2.3.3
Solar Supply
14
2.3.4
Multiple Modules
15
2.3.5
24V Regulated Supply
15
2.4 I
NPUT
/ O
UTPUT
16
2.4.1
Digital Inputs (105-1, 105-2 and 105-4)
16
2.4.2
Digital Outputs (105-1)
16
2.4.3
Digital Outputs (105-2, 105-3 and 105-4)
17
2.4.4
Analogue Inputs (105-1 and 105-2)
17
2.4.5
Analogue Outputs (105-1 and 105-3)
18
2.4.6
Pulse Input (105-1)
20
2.4.7
Pulse Inputs (105-2 and 105-4)
20
2.4.8
Pulse Output (105-1)
21
2.4.9
Pulse Output (105-3 and 105-4)
21
2.4.10 RS232 Serial Port
22
2.4.11 RS485 Serial Port
22
2.4.12 Connecting 105S Modules to 105U Modules
23
CHAPTER THREE OPERATION
24
3.1 P
OWER
-
UP AND
N
ORMAL
O
PERATION
24
3.1.1
Communications
24
3.1.2
Change of state conditions
26
3.1.3
Analogue Set-points
29
3.1.4
Start-up Poll
29
3.1.5
Communications Failure (CF)
29
3.1.6
Resetting Outputs
29
3.2 S
YSTEM
D
ESIGN
T
IPS
30
3.2.1
System Dynamics
30
3.2.2
Radio Channel Capacity
30
3.2.3
Radio Path Reliability
30
3.2.4
Design for Failures
31
3.2.5
Indicating a Communications Problem
32
3.2.6
Testing and Commissioning
33
3.3 S
ECURITY
C
ONSIDERATIONS
33
