Siera Wireless MP555, Руководство по установке программного обеспечения

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Rev 1.2 37
as follows:
• Label: (
Voltage
,
Vehi
• Raw value:
• Zero scale:
• Full scale:
• Current value:
•
volts
,
)
could be
“Temperature
.
Jan.05
To configure an analog sensor or gauge, select the tab that
corresponds to the pin you are using, and complete the fields
Enter a description of the sensor or gauge
Measured
cle Speed
, etc.), up to 20 characters in length.
Shows the analog value from the input (read­
only). The analog input has a 10-bit (1024-step) resolution,
so the raw value range is between 0 and 1023.
Enter the minimum value for the units you are
reporting (used to convert the raw analog value of zero).
Enter the maximum value for the units you are
reporting (used to convert the raw value of 1023).
Shows the resulting converted value using
the zero and full scales entered.
Unit: Specify the units of the input (
km/h
, etc.), up to
20 characters in length.
Example
If you are measuring temperature, and the thermometer you
have connected to the I/O connector measures between -30
(raw value 0 and +50 (raw value 1023) degrees Celsius, then
your zero scale is
-30.0
and your full scale is
50.0
. Your label
”, and units,
“degrees C”
The measurements are calculated for the 80-degree range
(between -30 and +50), which is divided into 1024 steps
(0.0781 degrees per unit step). A reading of 25 degrees (55
degrees above the minimum) would therefore show a raw
value of 704 (55 degrees/0.0781 degrees per unit).
Configuring the Modem to Report GPS and I/O Data
I/O configuration in Watcher
There are separate windows in Watcher for configuring the
analog and digital ports.
Analog input setup
The Analog Input window (
T
OOLS
> Configuration > Analog...
) is
used to configure devices on the four analog inputs. Each tab
corresponds to a pin:
Analog Tab Connector Pin
Input 1 14
Input 2 7
Input 3 15
Input 4 8