AR3000 User’s Manual
20
Rev 1/10
Velocity command reports the velocity as the first number (if velocity commanded).
Decimal
-0123.456
sign (space or ‘-’), 4+3 decimal digits plus space
Hexadecimal
FFFFFE
24 bit 2’s complement number plus space
Binary
1BBBBBBB 0BBBBBBB 0BBBBBBB
21 bit 2’s complement number
The Distance is reported in units determined by the scale factor (see section 5.2.2).
Decimal
-0123.456
sign (space or ‘-’), 4+3 decimal digits
Hexadecimal
FFFFFE
24 bit 2’s complement number
Binary
1BBBBBBB 0BBBBBBB 0BBBBBBB
21 bit 2’s complement number
The signal strength value follows distance and does not have units, but typically ranges from
<600 to >3400. The AR3000’s performance is optimized when 1500 < Signal Strength <
3400.
Decimal
01956
space plus 5 digits
Hexadecimal
07A4
space plus 16 bit number
Binary
0BBBBBBB
[0BBBBBBB]
The 7 most significant bits of the 14 bit
number (only the first, most significant
byte is transmitted)
Temperature is reported in °C and follows distance and/or signal strength. The internal
temperature is typically about 8°C warmer than the external temperature.
Decimal
+23.4
space, sign (‘+’or ‘-’), 2+1 decimal digit
Hexadecimal
00EA
space plus 16 bit 2’s complement number
Binary
0BBBBBBB 0BBBBBBB
14 bit 2’s complement number
5.2.2.
Data Units Scale Factor (SFx.xxxxxx)
This parameter specifies the distance scale factor (multiplier). The default setting is 1.0
(SF1), which generates the sample result in meters. The units are not labeled.
Type
SF<Enter>
to display the current scale factor.
Type
SF x<Enter>
to specify the scale factor.
The serial port will respond by displaying the new value.
x
: scaling factor multiplier (from meters). The resolution is approximately 0.000001. The
allowed range of the scale factor is from -10.000 to -0.001 and from 0.001 to 10.000.
Direct conversion to inches (39.3701) or millimeters (1000.0) is not possible.
Examples
SF1<Enter>
Scale factor = 1.0
Output in units of meters
SF3.24084<Enter>
Scale factor = 3.24084
Output in units of feet.
