User manual

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antenna, with an average gain >-5dBi, if using the GPS functionality. If both RX diversity and GPS are required, install a
Cellular/GPS combo antenna.
This device is configured with default settings and is ready to be configured via HTML. Some configurations may be set
using AT commands. Refer to Section XX for AT Commands using the Serial Port.
1.8 RS-232 SERIAL PORT INTEGRATION PARAMETERS
Table 5 provides the serial cable design information to integrate the Vanguard modem into your system. Table 6 gives the
default RS-232 communication parameters.
Table 5 – Standard RS-232 DE-9 Pin out
Pin
Name
Direction
Description
1
CD
←
Carrier Detect
2
RX
←
Receive Daa
3
TX
→
Transmit Data
4
DTR
→
Data Terminal Ready
5
GND
System Ground
6
DSR
←
Data Set Ready
7
RTS
→
Request to Send
8
CTS
←
Clear to Send
9
RI
←
Ring Indicator
Note: Direction is DTE relative DCE
Table 6 – Default RS-232 Communication Parameters
Bits Per Second
115,200
Data Bits
8
Parity
None
Stop Bits
1
Flow Control
None
Figure 7 DE-9 Connectors
1.8.1 ODP (OPEN DEVELOPERS PLATFORM) OVER RS-232
This device includes the Open Developers Platform (ODP), which permits customers to develop their own Linux based
applications which run on the modem’s ARM9 (AT91RM9200) processor. The customer’s application can utilize the external
RS-232 port, and or an internal 3 pin (GND, RXD, TXD) RS-232 port and is able to transfer data over the cellular WAN using
the linux socket libraries. The Vanguard firmware also supports an API that allows the customer’s application to access
diagnostic data from the cell module such as connection status and RSSI. More information and support is provided by
CalAmp’s Applications Engineering organization.