Decatur Electronics SI-2 Technical Manual page 81

Texas Transportation Institute
MPH
Serial communication protocol set for
8N1 <ASCII*> <D> <ASCII hundreds> <ASCII tens> <ASCII ones> <.> <ASCII tenths> <,>
<3 ASCII characters represent signal strength in dB 000 through 255> <CR> <LF>
Polling string
Low-speed
Sensitivity setting
Update Rate
Data hold setting
No zero speed report
Low Speed cutoff
High Speed cutoff
Cosine correction angle 1
Cosine correction angle 2
Report targets set
Baud rate
Direction report
Washington State DOT
MPH
Serial communication protocol set for
8N1 <ASCII S> <ASCII tens> <ASCII ones> <CR> <7-bit checksum>
High-speed
Sensitivity setting
Update Rate
Data hold setting
Zero speed report
Low Speed cutoff
High Speed cutoff
Cosine correction angle 1
Cosine correction angle 2
Report targets set for
Baud rate
Direction report
8N1 <ASCII *> <ASCII P> <CR>
1-70 mph
9
Polled
2 sec
On no targets
1 mph
70 mph
Set to 0
Set to 0
For all directions
9600 baud
ON (D = '+' for approach, D = '-' for recede, D = '?' for direction
unknown)
5-200 mph
9
On speed change only
2 sec
On no targets, set once every 2 seconds
5 mph
99 mph
Set to 0
Set to 0
Approach only
1200 baud
OFF
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