Manual

SF11 Laser altimeter
Product manual
3. Quick start guide
1. CAUTION - The SF11 laser altimeter contains a laser and should never be aimed at a
person or an animal. Do not look at the beam directly with optical instruments.
2. Download LightWare Terminal software from www.lightwarelidar.com onto your PC.
Open the installer package and follow the installation instructions. Everything
needed for communicating with the SF11 will automatically be installed.
3. Plug the “micro-B to type A” USB cable provided into the SF11’s micro USB
connector and connect the other end to your PC. This provides both power and
communication to the unit.
4. Start the LightWare Terminal software and click the “Connect” icon to open a
communications port. The distance, analog voltage and signal strength will begin to
scroll in the display window.
5. If the connection isn’t made automatically, click the “Laser” icon and select the
correct USB port from the list shown.
6. Press the <SPACE> key to display the main menu. This menu includes a list of all the
settings that can be changed in the SF11. A summary of the settings is given below:
7. Once you have confirmed your settings, press the <SPACE> key to start taking measurements and the results will be
shown in the Te r mi n al display window.
8. Press the “Disconnect” icon before unplugging the USB cable.
9. There are several embedded interface options available on the main connector. These connections are used to integrate
the SF11 into your system and the details are explained later in this document.
Setting
Range of values
Description
a: Hide / Show system menu
b: Zero datum offset
-10.00 m … +10.00 m
Adjusts the zero point from which measurements are taken.
c: Measuring mode
long range | quick response
Optimises the measuring to suit either long measurements or a
quicker response when signals go out of range.
d: Hide / Show communication menu
e: Serial port baud rate
9600 … 921600
Sets the baud rate for the serial port.
f: Serial output mode
on demand | continuous
Selects whether data on the serial port is transmitted when a
command is sent or continuously.
g: I2C bus address
0 … 7F
Sets the I2C address as a 7 bit, hexadecimal number.
h: Hide / Show analog and alarm menu
i:
Linear analog output
0.00 m to 25.00 m = 0.00 V to 2.048 V,
or
0.00 m to 25.00 m = 2.048 V to 0.00 V
Selects between a linear analog output or an alarm signal. The
analog output can be selected to give increasing or decreasing
voltage with distance. The alarm can be selected to be active
near or active far.
Switching alarm output
<25.00 m = ON | >25.00 m = OFF, or
<25.00 m = OFF | >25.00 m = ON
j:
Analog distance range
1.00 m … 100.00 m
Sets the distance at which the analog output reaches the
maximum voltage or the alarm output switches.
Alarm distance range
k:
Analog voltage range
0.00 V … 2.048 V or
0.00 V … 3.30 V
Selects the maximum output voltage of the analog output or
the alarm signal. The minimum voltage is always 0.00 V.
Alarm voltage range
l: Alarm hysteresis
0.00 m ... 5.00 m
Sets the hysteresis of the alarm switch point. This setting is
only used when the alarm is active.
m: Hide / Show filter menu
n: Output on lost signal
130.00 m | hold last result
Selects the response to a lost signal condition. Either the result
is shown as an out-of-range distance or the last result is held.
p: Confirm lost signal
0.0 ... 120.0 seconds
Sets how long the signal may be lost before the lost signal
condition specified in setting n: is output.
q: Median filter
ON / OFF
Enables the Median smoothing filter.
r: Median filter size
3 … 32 results
Sets how many results are included in the Median filter array.
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