Halo Photonics Stream Line XR Installation instructions

Halo Photonics Stream LineXR Scanning Doppler LiDAR system - Hardware Guide
Our modular, autonomous, turn-key, pulsed Doppler LiDAR systems were conceived to meet the need for remote
sensing of motion and backscatter in the atmosphere. In this mode of operation, naturally occurring aerosols and
clouds act as a distributed target and backscatter the transmitted pulses. The receiver detects the Doppler shift
brought about by the motion of the distributed targets and therefore the line-of-sight component of their velocity. The
novel optical technology employed and the design approach have led to a new class of eye-safe (Class 1M), high
performance LiDAR exhibiting exceptional stability which is compatible with a continuous and unattended mode of
operation. Typical applications include boundary layer wind profiling, plume dispersion, analysis of complex flows,
cloud studies, cloud base measurements and gust and air quality monitoring.
While every effort has been made to provide accurate and calibrated data products, HALO Photonics does not
currently guarantee the calibration of the data in absolute terms.
The system has been designed to be rugged and autonomous. Even so, the end user must respect the fact that the
system is a precision optical instrument that must be treated with great care.
The laser emission from the antenna is in the class 1M category. The responsibility for ensuring suitable safety
procedures and operating modes lies entirely with the end user. HALO Photonics does not accept any
responsibility for issues relating to the field deployment of the equipment and propagation of the beam in the
atmosphere.

General notes on the LiDAR PC and the use of third party software.
• The LiDAR contains a PC, running Windows XP or 7. It is an embedded, ruggedised unit, which controls the
LiDAR and acts as a storage system for the collected data. We would encourage users to treat the PC as a
sophisticated embedded controller, and not as a general use PC. For example – the USB ports are for
attaching a keyboard and mouse, and not for charging mobile phones.
• Each LiDAR is shipped with a suite of software that has been tested and found to be stable and Halo
Photonics can only guarantee trouble free operation of the system’s control software and PC as long as no 3rd
party software is installed.
• If additional software is needed for security reasons, then it should be fully tested before the LiDAR is left
unattended.
• For remote connection to the Internet, we would advise the use of SIM-based modems that simply present
RJ45 connectivity to the LiDAR – which means that there is no need for additional software. USB broadband
dongles have been known to cause problems both from the software, and because of the amount of power
that they draw from the USB port.
• The PC should be allowed to boot straight to the desktop without user intervention. If accounts are set up that
require a password to be entered, then the LiDAR won’t be able to run any software contained in the Windows
startup directory when recovering from a power cut for example.
Windows settings:
Windows auto-updates are disabled.
Windows firewall is on
Windows anti-virus is off
Windows time syncing is disabled
Daylight saving adjustment is disabled
Video resolution is 1280 x 1024
BIOS settings:
The PC is set to come on with power.
The PC will come on at 12:20 PM if it is powered, but is off (after a shutdown for example)
General settings:
IP address for RJ45-X (192.168.0.1) – please do not change this setting.
IP address for RJ45-BB – This can be fixed if needed. The default is to auto-assign.
General handling notes regarding the LiDAR.
• No part of the LiDAR is to be removed or modified in any way without the written permission of Halo
Photonics. The removal or changing in any way of components or software will void the system’s warranty.
• If the handles need to be removed, then it is important that they are fully screwed back on before lifting. The
long handles screw onto the connector panel end, and the short ones go on the scanner end.
• If the scanner is moved manually whilst the LiDAR is un-powered, or when the motors are disabled (using the
scanner utility software), then it must not be rotated at more than 30 degrees per second.
• When adjusting the legs, care must be taken to ensure that the telescopic inner part of the leg does not
protrude more than 10cm (4”). If further adjustment is needed, then the opposite leg(s) can be wound in.
• Do not over-tighten the leg clamps. The 3 turned regions of the legs provide a suitable hard stop that will
prevent the clamps sliding.
• The system must not be stored or left in conditions where there is a risk that the ambient temperature could
fall below -20°C. During cold deployments, the system must be stored at room temperature prior to
deployment for at least 10 hours. Power must be maintained at all times during sub-zero deployments.

LiDAR Storage, Handling & Operating Recommendations.
These recommendations are to be used in conjunction with the operating manual that accompanies the LiDAR, and
the specification applicable to each individual unit.
Storage.
The storage temperature specification for the LiDAR is –20°C to +35°C.
In the hot extreme, storage in full sunlight must be avoided.
The LiDAR units should be stored at room temperature (21°C) outside of any transit case or other insulation for at
least 10 hours prior to deployment. For longer pre-deployment periods, the unit can be left inside the insulated transit
case.
If a LiDAR is being stored for more than 10 consecutive days, then it is recommended that it be kept in its transit case,
and in an environment where the temperature is 21°C ± 10°C.
Handling.
The LiDAR must always be transported in the transit case as delivered, or alternatively, another case offering equal or
better protection.
Short movements that can be performed by hand should only be attempted within the guidelines of local manual
handling guidelines.
The LiDAR systems are to be handled with the care and attention that would reasonably be expected within the
context of a precision piece of optical equipment.
The LiDAR must not be powered whilst being moved or transported.
Operating.
No parts of the LiDAR are to be removed or adjusted in any way without the permission of Halo Photonics with the
exception of the lifting handles and mast if fitted. The settings file is not to be modified without permission of Halo
Photonics.
The operating temperature specification is to be observed at all times.
The LiDAR should be sited in such a way as to minimise the amount of heat generated by close surfaces (such as
tarmac) or sunlight falling on it. The temperature specification is relevant to the temperature as experienced by the
LiDAR, and not a reading taken from a shaded weather station.
The installation and running of software over and above that which was present upon initial delivery (or updated from
time to time by Halo Photonics) must be kept to an absolute minimum. The system’s performance can only be
guaranteed where no 3rd party software has been installed.
If the LiDAR loses power for more than 2 hours whilst being operated in an environment where the temperature is
below freezing, then it must be stored at room temperature outside of any transit case or other insulation for at least
10 hours prior to re-deployment.
In cases where the LiDAR is to be deployed in an environment within the operating temperature specification, but
outside of the storage temperature specification, an un-interruptible power supply must be used that can supply power
to the LiDAR’s battery back-up unit or PCP module for long enough to allow normal power to be reinstated.
The Input voltage to the LiDAR must always be within the operating range of 24V DC +/- 10%.
The scanning unit must be allowed to turn freely, and not be impeded by covers, debris or other foreign objects. If
instructed to turn the scanner manually for diagnostic purposes, ensure that the LiDAR is either un-powered, or the
motors disabled. The azimuth or elevation movement must not be rotated by hand at a speed to exceeding 10
degrees per second.
It is the responsibility of the user to ensure that all local regulations relevant to operating a LiDAR system are adhered
to.

Table of contents
1. Transit Case – Packing and Unpacking
2. Connections
3. Power requirements and the UPS module
4. Powering up
5. Orientation and levelling
6. Site considerations
7. Routine cleaning
8.Typical thermal characteristics
9. Returning a system

1. Transit Case – Packing and Unpacking. [Back to contents]
For transportation, the LiDAR and its power supply unit are housed in a transit case that has a removable wheeled
base, with all of the wheels having integral brakes. The transit case with LiDAR weighs approximately 110Kg and will
need to be moved according to the appropriate manual handling health and safety guidelines.
Unpacking (reverse the process when packing).
The transit case consists of 3 separate pieces. The LiDAR is packed fully assembled.
Remove the top section and set it to one
side. The LiDAR will now be exposed, and
the integral foam blocks that stop the unit
from moving in transit can be seen.
Note the relative height of the leg tops
compared to the top of the mid-section
transit case. This is the height that the legs
will need to be adjusted to for re-packing.

Check your local manual handling guidelines before lifting, as the unit weighs approximately 60Kg.
There are three locating areas machined
into the legs that match the width of the leg
clamps. The LiDAR will be delivered with
the clamps set to the lowest position, and it
is recommended that it be left at this
position.
The small pillars with rubber-coned ends
act as support legs when the 4 main legs
are not attached. They prevent the weight
of the LiDAR being taken by the cooling
aggregate mounted on the underside of
the main base plate, which would cause
damage.
The feet should all be roughly in the centre
of their positioning recess when the LiDAR
is located correctly. Note that the unit will fit
properly in one orientation only.
Scanner
end
Connector
panel end

2. Connections. [Back to contents]
From left to right:
RJ45-X – This is for use with an RJ45 crossover cable, which will directly connect the internal PC to another PC.
Power LED and recessed internal PC power button.
The button will act in exactly the same way as a regular desktop PC power button. If the shutdown software has been
run and the PC is switched off, but the system is still powered, then a short press (duration of ½ second) will switch
the PC back on. It is not a reset button.
The power LED will light green when 24V DC is connected to the system. It doesn’t mean that the LiDAR components
are powered. There will be a power-up time delay after power is applied. If the fuse (F-1) has blown, the LED will not
be lit. If the time delay is still in progress, the LED will still be lit. When the left most LED close to F-1 and F-2 starts to
flash, it means that the PC is on.
24V DC – this is the 24V DC power inlet coming from the power supply module.
F-1 – 10A 5x20mm fuse for the LiDAR circuit.
F-2 – 10A 5x20mm fuse for the heaters and the thermo-electric cooler (TEC) circuit if fitted.
There are 5 small LEDs close to the 2 fuse holders. 1 of them flashes once the internal PC is on and connected to the
control module. This LED is useful when diagnosing the PC’s status.
RJ 45-BB – this is a standard RJ45 connection that can be connected to a regular hub or switch – used to connect the
LiDAR to the Internet or a LAN for use with the remote access software.
SVGA – a circular connector requiring the supplied adapter cable to allow connection with a standard SVGA
connector.
Note that the internal PC video resolution is set to be 1280 x 1024 pixels, so the attached monitor will need to be
capable of supporting this resolution.
Mast 1 – Not used
Mast 2 – If the optional GPS module is fitted, then a connector as shown will be fitted; otherwise, the Mast-2
connector will be the same as the Mast-1 connector.
USB-1 and USB-2 are both standard USB 2 connections to the internal PC. They can be used for connecting a
keyboard and mouse.

This picture shows the two mast
connectors, another un-wired smaller
connector, and the white purging line.
The arrow on the power connector faces
away from the LiDAR when it is the correct
orientation. The connector is a ¼ turn
bayonet type. Ensure that it is properly
inserted and locked into position.

3. Power requirements and the UPS module. [Back to contents]
• The LiDAR operates from 24V DC +/- 10%. The supply voltage can sometimes be pulled down to be outside
of this range when the LiDAR’s thermal control system is working hard – so it’s best to adjust the input voltage
presented to the UPS module to 25.5V no-load. This will allow the voltage to fall when under load.
• A QUINT-PS/1AC/24DC/20 power supply is recommended for connection to the UPS module. It can be
adjusted up to 25.5V and has the capacity to run the LiDAR with the extended temperature control option. It
will need to be housed in an enclosure of suitable IP rating, and have both mains and 24V cable that is safe
for use in the working environment expected of the system.
• The LiDAR will ship with a UPS module that has the correct connections for use with the LiDAR. The LiDAR
software will measure the voltage either to the input or output of the UPS - there are 2 wiring configurations.
With configuration 1, the LiDAR monitors the voltage to the UPS, and if a power cut happens, a warning
message will be displayed in the software tab area, which will warn that a power cut is detected, and the time
remaining until the LiDAR shuts down.
With configuration 2, the output of the UPS is monitored, and a power cut will be assumed if this measured
voltage falls to less than 20.5V, after which the LiDAR will shut down immediately. Systems that ship with v14
software or later will be using configuration 1, whilst older systems (pre May 2014) will have configuration 2
UPS modules. The configuration can be changed if needed.
• Note that the power cut protection is only active when the software is running and collecting data. The
thermal control circuit is not buffered against power cuts, and the UPS only provides buffered power for the
LiDAR. If the power comes back on before the power cut voltage threshold is reached (or the shutdown timer
reaches zero), the UPS will switch back to the 24V main feed, and the system will carry on as normal without
shutting down.
I/P Active LED –
illuminated when the unit
has input power.
O/P Active LED – when
lit, 24V is available at the
output connector.
Aux – 24V output. Can
be used for the window
blower (Pro system).

• The LiDAR draws ~ 7A at 24V DC.
• If the active thermo-electric cooler (TEC) system is fitted, it can draw up to an additional 7A when fully cooling.
The temperature spec of the LiDAR with this option is -20 to +40C.
• If the extended TEC system is fitted, it can draw up to 14A when fully cooling. The temperature spec of the
LiDAR with this option is -20 to +50C. The LiDAR will have a passive cooler, a regular TEC or an extended
TEC system fitted.
• The UPS module does not perform any smoothing or regulation of any kind.
• A blue Bulgin Maxi connector suitable for connection to the UPS unit is provided with the system.
Bulgin Maxi Buccaneer 2 pin socket needed to
connect to the power module input plug. A plug is
supplied with the system, and may have some wire
connected for guidance.
PX0911/02/S
+24V DC on the ‘1’ terminal
0V on the ‘2’ terminal
The connector inner (pictured right) unscrews from
the main connector body using a left hand thread.
Recommended PSU for connection to the 24V DC
input power protection module.
It is recommended that the no-load voltage of the
PSU be turned up to 25.5V before connection to
the LiDAR PSU.
TDK-Lambda HWS600-24
Or
QUINT-PS/1AC/24DC/20
• The LiDAR expects to have a smooth 24V DC +/- 10% at all times. It is the responsibility of the user to
ensure that a suitable 24V DC is provided to the UPS module, and steps should be taken to ensure that the
risk of spikes and other sudden voltage changes outside of the voltage specification are minimised.
 A regulator such as this one can be used to provide a clean supply:
http://uk.rs-online.com/web/p/isolated-dc-dc-converters/0491257/
This kind of device is especially useful if a combination of generators and battery banks are being used to
power the LiDAR. The output of this unit can be adjusted up to give 25.5V when not connected to the
LiDAR.
 Additionally, an RJ45 surge protection device is recommended for field deployments:
http://uk.rs-online.com/web/p/surge-suppressor-units/2509380582/
+24 Pin 1

4. Powering up. [Back to contents]
Connect the basic modules as shown in the schematic below. The order in which connections are made is not
important. A time-delay device inside the LiDAR prevents ‘hot’ power from being applied directly to the internal sub-
components.
**An additional fuse is fitted inside the UPS unit if the extended temperature range option is fitted.
Once the UPS module has power, and is connected to the LiDAR, there may be a delay (of up to 20 seconds) before
the LiDAR powers up. The thermal control system has power 10 seconds or so after power is applied to the LiDAR,
and so the external fans may run. Note that if the fans are running, it doesn’t mean that the LiDAR is also powered, as
they run from separate fuses and time delay units.
When the LiDAR has power, the scanner will move to the home position and the internal PC will be fully booted
approximately 1 minute later – indicated by the flashing green LED on the connector panel cluster.
If the unit has been allowed to cool down to below 15ºC, then additional time will be needed before the unit
can be run. Ideally, the system should be stored at room temperature (20ºC) for at least 24 hours prior to
deployment.
*As indicated, a kit of parts can be supplied consisting of an enclosure, connectors and a suitable AC to DC PSU for
use with the system. It will need to have the appropriate cable type and length sourced and the whole assembly wired
by a qualified electrician. Halo can only supply mains rated components – they cannot be supplied in a wired state.
It is advised that a keyboard, mouse and monitor be connected for the first power up.
*Optional kit of parts
to be wired by a
qualified electrician. LiDAR
AC F1 (10A) LiDAR input
F2 (10A) Passive & regular
thermal control
Extended TEC system
600W
AC / 24V DC
power supply
UPS module
24V DC input
24V DC O/P
**Internal 10A
blade fuse
UPS
cable

5. Orientation and levelling. [Back to contents]
When the main control software is started, or the scanner utility is running, a pitch and roll value will be displayed.
These readouts can be used to help with levelling the LiDAR.
The table below shows each tilt situation, and the corresponding display. The system is shown in its homed.
-ve pitch value will be displayed.
+ve pitch value will be displayed.
-ve roll value will be displayed.
+ve roll value will be displayed.
• An adjustment knob at the top of each leg will extend and retract a telescopic sub-leg to vary its length. Adjust
the legs in pairs – one end or one side at a time.
• Turn the adjustment knobs clock wise (looking from above) to retract the leg, and counter-clock wise to
extend.
• The pitch and roll sensor has a resolution of 0.1 degrees.
Note. For CSM scan files, which are defined in motor encoder counts – (not degrees), the offset bearing will not be
used, and all movements are with respect to the home position (zero counts). It will be necessary for the scan file
designer to take account of any orientation offset during the scan file creation. For this reason, we would recommend
that the LiDAR be aligned to face north in its home position, which will make scan files easier to design.
It is possible to enter a bearing during software setup, which will then be used in
conjunction with all of the azimuth co-ordinates in the scan files. If the LiDAR is
aligned to face north when in its home position (recommended), then a bearing of
0º is used. If it is facing south, then 180º will be used, and the azimuths in the scan
files will be corrected accordingly. The bearing is taken along the direction of the
arrow in the plan view shown. This is the LiDAR’s home position, which the
scanner moves to when the LiDAR powers up.

6. Site considerations. [Back to contents]
It is strongly recommended that the LiDAR be deployed on a surface that is not liable to get excessively hot, as the
cooling aggregate (air-flowed heat exchanger) is located on the underside of the base plate. Steps should be taken to
minimise the heat generated underneath the LiDAR from direct sunlight - a turfed area is ideal, or shading if possible.
Ambient temperatures quoted in the temperature specification of the LiDAR are with respect to the air entering the
cooling unit, and not the general ambient conditions of the whole site.
It is recommended that the power supply module be located directly underneath the LiDAR, and raised off the
ground to reduce exposure to the weather. The module’s enclosure is rated to IP66.

7. Routine cleaning. [Back to contents]
Heat exchanger fans.
If the LiDAR is in a dusty environment, it may be necessary to blow the dust from around the heat exchanger fans with
an air duster. The fans should also be checked routinely to make sure that they are both spinning without obstruction.
Wiping brush.
The wiping brush can be removed if it is full of dust, or badly deformed. There are 2 small grub screws that hold in
place. The brush can be cleaned in water, and then set straight whilst wet and then dried. It should then maintain the
shape. A replacement brush is available if it is damaged.
Vinyl tape.
The vinyl tape around the bottom of the white enclosure is not a seal – it is there just to prevent a build up of dust from
becoming trapped between the enclosure to base plate junction. Replacement vinyl tape can be used to replace it if it
becomes damaged. Regular tape as used for car striping is recommended 1” wide.
Optical output window.
The optical performance will not be affected too badly from beaded standing water on the output window as illustrated
below provided the fractional coverage of the clear aperture is not too high.
The output window has a hard anti-reflection coating on the outer surface. The coating is reasonably robust but should
it be deemed necessary to clean it, the procedure below should be adopted:
The surface of the window should be flooded with IPA or an equivalent optical cleaning solution and left to soak for a
short period of time to loosen any debris which might have adhered to the surface. Wiping of the window should be
done with a soft lens tissue. This cycle should be repeated until a satisfactory result is achieved.
LiDAR enclosure.
If the LiDAR’s enclosure becomes excessively dirty, then it can be washed down with a sponge and water. Detergents
used for washing dishes for example, should be fine to use. Scouring pads or abrasive cleaning products should not
be used.
Purging.
If the internal humidity of the system becomes high, then it may be necessary to purge the system with dry air. An air
inlet on the connector panel, and one of the enclosure screws will be removed during the purge.
A suitable connector for use with the purge inlet will have been supplied with the system. If it can’t be found, this is the
part that is needed: http://uk.rs-online.com/web/p/hose-couplings/3872640/
Please contact Halo for recommended purge procedure.

8. Typical thermal characteristics. [Back to contents]
The graph below illustrates the expected averaged internal temperature versus the external ambient temperature for
the two different standard temperature specifications. The external ambient temperature is defined here as the
temperature of the air being drawn into the heat exchanger on the underside of the lidar. Depending upon the
characteristics of the ground, this may be hotter than the temperature as measured in the conventional way for
meteorological reporting.
Systems fitted with the Active or Extended temperature option.
The heat exchanger fans will be on all of the time, and soon after power is applied to the LiDAR. The cooling circuit is
not covered by the UPS unit, and will go off during a power cut. If the fans are not operating, and there is not a power
cut, then the fuse F2 may be blown. If fuse F-2 is not blown, then there may be a fault with the cooling unit, in which
case, the LiDAR should be powered down to avoid the risk of it over heating.
Passive temperature option.
The heat exchanger fans will be on when the internal ambient temperature goes above a set point, and off again when
cooled to 2˚C below this point.
If either system experiences an internal temperature of below 15˚C, then an internal heater will come on.
Thermal shutdown.
In the event of a cooling system failure, or high ambient temperatures (> 40˚C), the software may shut some parts of
the LiDAR down. Data collection will be paused while the system is in this thermal shutdown mode. A notice will be
displayed on the system information window, ‘Thermal shutdown – waiting for the internal temperature to reduce’, and
an event will be written to the system error log.
When the temperature is back to an acceptable level (normally 5˚C lower than shutdown temperature set point), then
the system will resume taking data as normal.
Passive temperature option
Active thermal control option

9. Returning a system. [Back to contents]
Before returning a system to Halo, please ensure that the following preparatory steps are followed. If the system is
being returned due to an internal computer fault, then it is recognised that some of the following steps will not be
possible.
• The enclosure and legs are cleaned off, and the system is dry prior to being packed.
• The IP settings for the RJ45-X connection are set to the default:
IP Address 192.168.0.1
Subnet mask 255.255.255.0
Default gateway 192.168.0.1
• The Remote access software that the system came with is able to run at startup.
• The connector dust caps are all in place.
• Any passwords needed to access the system are either removed or are sent to Halo prior to sending
the system.
• The system is packed in the same way that it was received. The Unpacking section can be used for
reference. If your transit case does not have fixed foam packing blocks, then some other suitable
foam should be wedged between the white enclosure and the transit case internal wall to prevent
excess movement during transit. Take care not to pack too much material around the LiDAR so as to
bulge the transit case wall out of shape.
• The system’s UPS box will not be needed – unless a fault is suspected.
• A vehicle with a tail-lift will be required to offload the system at Halo-Photonics. Opening times for
accepting returns are between 10:30 and 17:00 UK local time. Please ensure that the wheeled board
accompanies the transit case.