Setup And Com Ports; Power Connector - CalAmp Guardian-100 User Manual

1.3.4 SETUP and COM Ports

The SETUP and COM serial connections are DE-9F RS-232 ports.
Serial port considerations:
 Guardian radio modem SETUP and COM ports are Data Communication Equipment
(DCE) devices
 In general, equipment connected to the Guardian's SETUP / COM serial port is Data
Terminal Equipment (DTE) and a straight-through cable is recommended.
Note: If a DCE device is connected to the Guardian SETUP / COM port, a null modem
cable/adapter is required.
The pin-out for the SETUP and COM ports are shown in Table 1.3.
Table 1.3 Pin-out for DCE SETUP and COM port, 9 Contact DE-9 Connector
Contact
1
2
3
4
5
6
7
8
9
(1) Programmable.
(2) Always asserted
(3) For future use
The DCD, DTR, RTS and CTS control lines are programmable. Refer to section 6.4 for serial
port control line configurations.

1.3.5 Power Connector

The Guardian is supplied with a right-angle power connector (10-30 VDC). Table 1.4 shows
the pin-out of the power connector.
Contact #
(Left to Right)
4
3
2
1
Note: The White Enable line must be tied to the red positive lead of the connector for the
Guardian to function.
001-5006-000_FCC.docx
EIA-232F Function
(1)
DCD
RXD
TXD
DTR
GND
(2)
DSR
(1)
RTS
(1)
CTS
(3)
RING
Table 1.4 Pin-out of the power connector
Color
Black
Red
White
Signal Direction
DTE ← DCE
DTE ← DCE
DTE → DCE
DTE → DCE
DTE --- DCE
DTE ← DCE
DTE → DCE
DTE ← DCE
DTE --- DCE
Description
Fan Power Output (5V)
Ground
Positive (10-30) VDC
Enable
Page 12