Table 13: Serial Data Cable Pin Out
Serial Data Cable Pin Out
Pin Signal
Description
Direction
1
DCD
Data Carrier Detect
To PC
2
RD
Receive Data
To PC
3
TD
Transmit Data
From PC
4
DTR
Data Terminal Ready
From PC
5 GND
Signal
Ground
Common
6
DSR
Data Set Ready
To PC
7
RTS
Request to Send
From PC
8
CTS
Clear to Send
To PC
9
RI
Ring Indicator
To PC
6.4 Signal Strength Conversion Chart
Carlson Wireless -
Trailblazer Rev 6C
Radios
Radio
threshold -
90 dBm @
512 kbps
Radio
threshold -
93 dBm @
256 kbps
GUI
Signal
Reading
Path
Attn
dB
Rx
Level
Fade Margin
Fade Margin
3 125
-111
-21 -18
4 121
-107
-17 -14
5 115
-101
-11 -8
6 111 -97
-7 -4
7 109 -95
-5 -2
8 107 -93
-3
0
9 105 -91
-1
2
10 103 -89
1
4
11 101 -87
3
6
12 100 -86
4
7
13 99 -85
5
8
14 98 -84
6
9
15 97 -83
7
10
16 96 -82
8
11
17 95 -81
9
12
18 94 -80 10
13
19 93 -79 11
14
20 92 -78 12
15
21 90 -76 14
17
22 89 -75 15
18
Trailblazer Installation and User Manual
43
