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MP 555 GPS Vehicle Installation Guide
Note: Do not connect the
MP 555 GPS to a USB port on a
PC before installing the software.
Software installation instructions
are provided in the Software
Installation, Conf guration, and
Integration Guide (document
number 2130352) on the instal-
lation CD.
24
Cable Connection to the Computer
The MP 555 GPS connects to a PC using a standard serial cable
(with a DB9 connector on the modem end) or USB cable (with
a Type A connector on the PC end an a Type B connector on
the modem end). The maximum length for the serial or USB
cable is 5.5 m (18 feet). These cables are readily available from
many suppliers.
i
Sierra Wireless sells suitable serial cables in 5 m (16-foot) (part
number 6000083) and 3 m (10-foot) (part number 6000048)
lengths.
Serial connector (DB9) pinouts
The MP 555 GPS is configured as DCE (Data Communications
Equipment) and uses the standard RS232 pin designations:
1. Data Carrier Detect (DCD)
2. Received Data (RXD)
3. Transmitted Data (TXD)
4. Data Terminal Ready (DTR)
5. Signal Ground (GND)
6. Data Set Ready (DSR)
7. Clear To Send (CTS)
8. Request To Send (RTS)
9. Ring Indicator (RI)
Figure 2-11: Pinouts for a RS232 male DB9 serial cable (left) that connects to
the MP 555 GPS's female DB9 serial connector (right). Note that the two
figures' pi
The serial connector uses these voltage specifications:
Figure 2-12: Voltage specifications for the MP 555 GPS's ser al connector.
DB9 MALE
nouts are mirror images of one another, since they plug together.
i
2130297
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