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DS300 Users Manual
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
May 22, 2006
Description
External Power 1.3 Amps See Note below
Battery Power See Note below
Battery Power Ground
External Power 5 Amps (Not Connected)
Switched Power Out (1 Amp max)
Input/Output #0 (Analog & Digital)
Input/Output #2 (Analog & Digital)
Main Serial Ground
Main Serial TX Data
Application RS232 TX Data
Application RS232 RX Data
Application RS485 TX1
Application RS485 TX2
Unused
Input/Output #4 (Digital only)
Input/Output #6 (Digital only)
Input/Output #8 (Digital only)
Input/Output #10 (Digital only)
Pin #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Description
External Power Ground
Battery Power See Note below
Battery Power Ground
AT_Vref (3.3 V)
Switched Power Ground
Input/Output #1 (Analog & Digital)
Input/Output #3 (Analog & Digital)
Analog Ground
Main Serial CD
Main Serial RX Data
No Connection
RS485 RX1
RS485 RX2
Unused
Input/Output #5 (Digital only)
Input/Output #7 (Digital only)
Input/Output #9 (Digital only)
Input/Output #11 (Digital only)
Table 1: Data/IO Connector
Note: the manufacturer requires the user to install (one each) 5 Amp fuses inline with the External
Power (Pin 1) and inline with the Battery Power (Pin 2) connections. If both Pin 2 and Pin 20 are
used for Battery Power a single fuse is used.
Table #2 below identifies the default configuration of the 12 I/O s and whether the I/O accepts
Analog and Digital or just Digital data. The Input/Output Mode can be changed by a third party
application, Over the Air (OTA) Command and Stelcomm.
Input/Output #
Type
Default Mode
0
1
2
3
4
5
6
7
8
9
10
11
Analog and Digital
Analog and Digital
Analog and Digital
Analog and Digital
Digital Only
Digital Only
Digital Only
Digital Only
Digital Only
Digital Only
Digital Only
Digital Only
Analog Input #1
Analog Input #2
Analog Input #3
Analog Input #4
Digital Input #1
Digital Input #2
Digital Input #3
Digital Input #4
Digital Output #1
Digital Output #2
Digital Output #3
Digital Output #4
Table 2: I/O Configuration Options
Stellar Document – Version 2.1c
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