Siera Wireless MP555, Руководство по установке программного обеспечения

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MP 555 GPS Software Installation and Configuration Guide
Typically a digital output device should be connected between
Ground (pin 10) and the output port (Pin 3 or 11).
Figure 5-3: Wiring for using Pin 3 (digital output) as an electronic switch. Pin
10 is Ground.
The digital I/O ports provide open-collector output to a
maximum of 500 mA.
Analog input devices
Note: Analog input data
Analog input devices are those that generate a signal of
CANNOT be sent to a remote
varying voltage, based on the state of an instrument or gauge.
host. The MP 555 GPS does not
An example of an analog input device might be a sensor that
receive or transmit analog input
detects the vehicle’s speed or fuel volume.
data over the network.
There are four pins of the DB15 connector to which an analog
input can be connected: Pins 7, 8, 14, and 15.
Typically an analog input device should be connected between
Ground (pin 10) and the input port (Pin 7, 8, 14, or 15).
Figure 5-4: A sensor wired to Pin 7 (analog input) and Pin 10 (Ground).
The analog input ports use a 10-bit (1024-step) analog-to-
digital converter over a range from 0 to 3.3 VDC, yielding a
digital step resolution of 0.0032 V.
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