Campbell SkyVUE 8M User Manual Download

Page: 1 / 111

Revision: 11/2020

Campbell Scientific, Inc.

Summary of Contents for SkyVUE 8M

Page 2: ...itoring 8 2 4 Specifications 9 2 4 1 Measurement specifications 9 2 4 2 Mechanical specifications 9 2 4 3 Electrical specifications 10 2 4 4 Optical specifications 12 2 4 5 Environmental specifications 12 2 4 6 Communications specifications 12 2 4 7 Transport shock and vibration certification 13 2 4 8 Compliance and testing 13 3 Initial preparation and checks 14 4 Installation 15 4 1 Location and ...

Page 3: ...types 42 5 1 6 Measurement and message intervals 43 5 1 7 Status command 46 5 1 8 Message polling 55 5 1 9 Loading a new operating system OS 56 5 1 10 Stratocumulus backscatter calibration 57 5 1 11 CRC 16 codes on terminal commands 59 5 1 12 Service command 59 5 1 13 Locked features 60 5 2 Restoring factory defaults 61 5 3 LED indicator 62 6 Messages 62 6 1 Data messages general 63 6 2 Checksums ...

Page 4: ...lculation 96 Appendix C Sky condition algorithm description 97 Appendix D Replacing the SkyVUE 8M PSU 99 Appendix E SkyVUE 8M Laser APD module replacement 101 List of figures FIGURE 1 1 Location of laser warning label 4 FIGURE 2 1 Principle of operation 8 FIGURE 2 2 SkyVUE 8M dimensions 10 FIGURE 2 3 PSU types 11 FIGURE 4 1 Military base 17 FIGURE 4 2 Connector layout 18 FIGURE 4 3 Cable connectio...

Page 5: ...5 3 Summary of message ID and descriptions 43 Table 6 1 Most significant alarm word for CS messages 65 Table 6 2 Middle alarm word for CS messages 66 Table 6 3 Least significant alarm word for CS messages 67 Table 6 4 Most significant alarm word for CS31 messages 79 Table 6 5 Middle alarm word for CS31 messages 80 Table 6 6 Least significant alarm word for CS31 messages 80 Table 6 7 Most significa...

Page 6: ...Calibration plate 1 Canvas cover white 1 Canvas cover olive green 1 T shaped heavy duty stakes 5 Power and communications cable 1 1 2 General safety This manual provides important safety considerations for the installation operation and maintenance of the SkyVUE 8M These safety considerations are classified into three levels WARNING Warnings alert the installer or user to serious hazards Ignoring ...

Page 7: ...ls and voltages WARNING Do not attempt to repair the SkyVUE 8M unit without consulting Campbell Scientific CAUTION Ensure that the correct voltage supply is provided to the sensor 1 4 Laser safety The SkyVUE 8M sensor incorporates an InGaAs laser diode which is rated as a class 3B device This is an embedded laser where the output from the sensor unit through the optics is minimized to class 1M Thi...

Page 8: ... hazardous class 3B laser radiation No attempt should be made to operate the laser module outside of the housing WARNING Annually check that the laser warning label on the sensor is still visible and can be clearly read When installing the sensor avoid pointing the laser housing towards areas where binoculars are in common use WARNING Use of controls or adjustments or performance of procedures oth...

Page 9: ...ternal electronics Wiring of the power and data cable should only be done by personnel qualified to install electrical equipment For outside installations this usually requires a certified electrician who is familiar with local electrical and safety legislation Some general guidance is given in Connectors and wiring p 17 but the responsibility for the installation lies with the installer The unit ...

Page 10: ...Power connectors are shrouded to prevent touching of the contacts The power supply should be isolated when connecting and disconnecting the cables to the sensor The SkyVUE 8M must be properly grounded by a licensed and qualified electrician to protect against voltage leakage shock risk Grounding p 15 Campbell Scientific recommends that RCD protection units be used with all sensors See Power connec...

Page 11: ...provides safety shutdown features such as over and under laser output level It also contains the calibration circuitry and dirty windows system PSU Power Supply Unit controls the power supply including battery charging and deep discharge protection The SkyVUE 8M has a rugged environmental enclosure that protects the instrument from the harshest conditions and will measure the atmosphere with high ...

Page 12: ...scription p 97 for more detail 2 1 3 Backscatter profile reporting Several possible data messages give the two way attenuated backscatter profile This consists of 2048 groups of five character values 10 240 characters in total Each character is 8 bits long and therefore each 5 figure group is 40 bits They are given as signed two complement integers and numbers greater than 239 1 represent negative...

Page 13: ...by the transmitter and the other half is used by the receiver This design provides an alternative to traditional two lens or common optics designs The optical isolation of traditional biaxial systems is maintained to increase detector sensitivity while the low overlap onset height of common optics systems is incorporated to allow measurements at close ranges 2 3 Internal monitoring The SkyVUE 8M m...

Page 14: ...sting 13 2 4 1 Measurement specifications Maximum reporting range 8 km 26 250 ft Minimum reporting resolution 5 m 15 ft Hard target range accuracy 0 25 4 6 m 15 ft Reporting cycle 2 to 600 s Cloud layers reported Up to four layers reported instantaneously Up to five layers reported in Sky Condition 2 4 2 Mechanical specifications Height 763 mm 30 in including feet Width 253 mm 10 in 508 mm 20 in w...

Page 15: ... A at 24 VDC 102 W total maximum DSP and internal heaters 10 to 40 VDC input 3 8 A at 12 VDC 1 9 A at 24 VDC 12V OUT 1 7 A for optional or external equipment if the SkyVUE 8M is using a DC supply of less than 14 VDC the 12V OUT will be less than 12 VDC Dew heater 10 W maximum Hood heater input 5 A at 12 VDC 2 5 A at 24 VDC Fuses DSP fuse HBC 5A T SkyVUE 8M Tactical LIDAR Ceilometer 10 ...

Page 16: ...hen connected to generators or when current consumption is important WARNING Removing the laser module with a battery connected or power applied to the SkyVUE 8M may expose the user to hazardous Class 3B radiation No attempt should be made to operate the laser module outside of the housing FIGURE 2 3 PSU types SkyVUE 8M Tactical LIDAR Ceilometer 11 ...

Page 17: ...6 Maximum tested wind speed 55 m s for sensor securely attached to the ground without camouflage covers 2 4 6 Communications specifications Supported serial settings 8 bits no parity 1 stop bit default 7 bits even parity 1 stop bit 7 bits odd parity 1 stop bit Supported data rates 300 baud 19200 baud 600 baud 38400 baud 1200 baud 57600 baud 2400 baud 76800 baud 4800 baud 115200 baud default 9600 b...

Page 18: ...n the military transport case from Campbell Scientific see Military transport case p 22 the SkyVUE 8M complies with the following standards MIL STD 810g DEF STAN 00 035 Further details are available from Campbell Scientific 2 4 8 Compliance and testing NOTE Further details regarding compliance and testing are available upon request EMC compliance EN 61326 1 2013 Electrical safety compliance EN 610...

Page 19: ...he USB connection and allocate a port number Enter the port setting in the terminal emulator program Older computer operating systems may need upgrading or additional software The SkyVUE 8M will output message type 004 default every 30 seconds see CS messages p 64 Use the open 0 command to open the terminal mode You should now see the prompt CS136 Type Status to see the sensor status information d...

Page 20: ...take into account if accurate and representative data from a site are to be obtained To reduce the service frequency with the unit place the SkyVUE 8M away from sources of contamination More regular maintenance will be required when the instrument is placed in areas where contamination is unavoidable WARNING If installing at an airport check and follow local guidance for allowed locations for a no...

Page 21: ...ll four locking mechanisms for the four legs and expand the legs fully starting with the front legs first b Locate the pins on each leg under the main body of the sensor and tighten the nuts fully c Level the sensor using the leg adjustments d Loosen the nuts above each foot and extend the foot to the required length to achieve a level position e Retighten the lock nuts on each leg f Secure the Sk...

Page 22: ...xamples p 26 This feature is useful for mobile or marine applications Backscatter profile data is NOT compensated but tilt angles are included in data messages NOTE Increasing the tilt angle beyond 24 can cause significant errors in vertical visibility measurements if scatter coefficients vary significantly with height By default tilting beyond 45 will trigger the tilt alarm in the output message ...

Page 23: ...f the connector pins is shown in Table 4 1 p 18 Table 4 1 Power and communications connectors Pin on SkyVUE 8M connector Wire number of supplied cable cores Description 9 pin D connector RS 232 A 1 GND DSP and internal heaters B 2 V DSP and internal heaters 12 24 VDC C 3 RS 232 TXD RS 232 2 RXD D 4 RS 232 RXD RS 232 3 TXD E 5 0 V hood heater 3 TXD F 6 V hood heater 12 24 VDC SkyVUE 8M Tactical LID...

Page 24: ... even when not powered Table 4 2 Function of the connector pins for the blower heater connector Pin 1 Heater 0 V Black 1 2 Fan 12 VDC Black 2 3 Thermistor Black 3 4 Thermistor fan 0 V Black 4 5 Switched 24 VDC Black 5 6 Switched 12 VDC Black 6 E Earth Green yellow 4 5 2 Wiring using supplied Campbell Scientific cables One 5 m 16 4 ft cable is supplied with the SkyVUE 8M for the power and communica...

Page 25: ...nnections The communications cable terminates at one end with a removable 9 pin D connector DB9 The D connector connects directly to a computer or data logger such as the Campbell Scientific CR1000X using a suitable interconnecting cable such as the SC110 FIGURE 4 3 p 21 The connector can easily be removed for direct connection to screw terminals See www campbellsci com downloads skyvue example pr...

Page 26: ...e the enclosure is for on site maintenance It supports communication of commands to the SkyVUE 8M and responses in the same form as the main serial port except the baud rate is fixed at 115200 see FIGURE 4 4 p 21 FIGURE 4 4 USB port 4 5 4 I O connection The I O port is only used for factory setting of the instrument SkyVUE 8M Tactical LIDAR Ceilometer 21 ...

Page 27: ...ggedly constructed do not overload the case or store heavy items upon it 4 7 Bird spike kit The optional bird spike kit deters birds from sitting on the SkyVUE 8M It includes four stainless steel spikes with rounded ends and a small reel of stainless steel wire The following figure shows installed bird spikes FIGURE 4 5 Ceilometer bird spike kit installed To install the bird spikes remove the cowl...

Page 28: ...using the grooves in the spike then wrap it back on itself CAUTION Do not tighten the wire too much as it may pull the spikes inwards and obscure the field of view of the SkyVUE 8M optics Only use one strand of wire to reduce the possibility of water drops being collected Check the wire during maintenance and replace if necessary SkyVUE 8M Tactical LIDAR Ceilometer 23 ...

Page 29: ...ns connector is securely attached 2 Unfold the cover and place it over the top of the SkyVUE 8M so that the hole in the cover locates over the window aperture 3 Pull one side down to locate the loop over one hook on the foot 4 Repeat process with each corner 5 Operation 5 1 Terminal mode 24 5 2 Restoring factory defaults 61 5 3 LED indicator 62 5 1 Terminal mode 5 1 1 Entering exiting the SkyVUE 8...

Page 30: ...d if using one The following text should be displayed The SkyVUE 8M is now ready for terminal mode commands The SkyVUE 8M commands are not case sensitive but the parameters and password are case sensitive Example of the open command followed by the 0 parameter OPEN 0 Example of the open command with the password Secret OPEN 0 Secret 5 1 2 Terminal mode commands general Table 5 1 p 27 provides a su...

Page 31: ...eters If a particular parameter did not need changing then the parameter can be replaced with a comma Back space will abort the command 5 1 3 Terminal mode command examples How to enter a command Example 1 The following text shows an example of setting up the SkyVUE 8M serial port This example sets the serial port to RS 232 hand shaking at 115200 bps 8 data bits no parity serial 0 10 0 To change o...

Page 32: ...d The settable range is 0 to 90 0 degrees tilt and the default is 45 0 degrees APPLICATION Application_n Application_n selects pre configured user settings optimized for a specific application For the following values of n 0 Help 10 Aviation 20 Research 40 Meteorology 225 User defaults The default application for the SkyVUE 8M is 10 Aviation Settings adjusted by the APPLICATION command include set...

Page 33: ... default 10 If set to 0 and the SkyVUE 8M is polled it will output the last measurement made If between 2 and 600 seconds the SkyVUE 8M continually outputs messages For sky condition output Campbell Scientific recommends setting the measurement_ Period 30 seconds If a measurement_Period is greater than 30 seconds the sky condition algorithm will be less able to resolve coverage for higher layers N...

Page 34: ...ng precipitation to avoid precipitation from being reported as low cloud 0 Filter Off 1 Filter On default Reports the highest cloud during precipitation DEFAULTS No parameters Loads factory defaults GETUSER Reads all user settings as a string of text Parameters are read in the following order user text user volVer user volume version OS_VER DSP OS version PsuOsVer PSU OS version TopOsVer TOP OS ve...

Page 35: ...hoodHBLowSpeed fan voltage for low speed mV intHMode internal heater mode message 0 fields for message 0 message 1 fields for message 1 message 2 fields for message 2 message 3 fields for message 3 message 4 fields for message 4 messagePeriod output message period in seconds heightOffset height offset meters bsAvTime backscatter average time in seconds laserMode laser operation mode laserPower las...

Page 36: ...rMarginDetector cloud detection threshold alphaGuessEnd cloud alpha guess at boundary alphaMin cloud detection alpha minimum Vcld_D cloud detection delta_Vcld_D cloud detection vis_Av_T cloud detection alphaGuess visibility initial alpha guess ratioLevel visibility ratio alphaMin visibility alpha minimum viscap visibility cap in meters visFull vertical visibility full threshold visTransparent vert...

Page 37: ...t std width m bsFltMode back scatter rolling filter mode 28012019c delta_Vcld_det_2 cloud detector type 2 slope threshold in m 3bins change in horizontal visibility 14052019a cloudMode cloud detector mode parameter 03072019a CRC 4 digit character CRC calculated from the u up to but not including the CRC using the standard CRC 16 Note Many parameters are not adjusted This command allows a reliable ...

Page 38: ...see note 1 below Internal 0 Internal heater OFF Internal 1 Internal heater ON Internal 2 Internal heater AUTO default Laser 0 laser heater off Laser 1 laser heater on default Test_interval 1 to 168 hours default 24 hours Heater Blower test interval HELP No parameters Calls up a list of user commands with brief descriptions HOFFSET Height_offset Height_offset is the offset to be added or subtracted...

Page 39: ... Message_ID_B Message_ID_C Message_ID_D Message_ID_E Set or read message configuration Message_Interval is the message interval in seconds Range is 2 to 600 s default 30 0 gives polled messages Note This command may affect measurement parameters within the BS command See Measurement and message intervals p 43 Message_ID is the message type to output between 0 and 999 default 004 If Message_ID 0 no...

Page 40: ...s Forces a system reboot This will restore previously saved user settings Any unsaved changes will be lost Settings are saved in the terminal mode when the CLOSE command is typed which exits the terminal mode SCCAL No parameters but user interaction required Stratocumulus backscatter calibration This requires a human observer to confirm a stable Stratocumulus cloud layer between 250 m to 2500 m wi...

Page 41: ... parity 1 stop bit SERVICE No parameters but user intervention required Performs a service procedure SETUSER String Load all user settings as a string of text not changed parameter will not be updated and the previously set value will persist String user not changed volVer user volume version not changed OS_VER DSP OS version not changed PsuOsVer PSU OS version not changed TopOsVer TOP OS version ...

Page 42: ...ghSpeed Fan voltage for high speed mV hoodHBLowSpeed Fan voltage for low speed mV intHMode internal heater mode message 0 fields for message 0 message 1 fields for message 1 message 2 fields for message 2 message 3 fields for message 3 message 4 fields for message 4 messagePeriod output message period in seconds heightOffset height offset meters bsAvTime backscatter average time in seconds laserMo...

Page 43: ...f back scatter detection threshold snrMarginDetector cloud detection threshold alphaGuessEnd cloud alpha guess at boundary alphaMin cloud detection alpha minimum Vcld_D cloud detection delta_Vcld_D cloud detection vis_Av_T cloud detection alphaGuess visibility initial alpha guess ratioLevel visibility ratio alphaMin visibility alpha minimum visCap visibility cap in meters visFull vertical visibili...

Page 44: ...width in meters bsFltMode back scatter rolling filter mode 28012019c delta_Vcld_det_2 cloud detector type 2 slope threshold in m 3bins change in horizontal visibility 14052019a cloudMode cloud detector mode parameter 03072019a CRC 4 digit character CRC calculated from the u up to but not including the CRC using the standard CRC 16 Note String is added as text and should be cut and pasted from a st...

Page 45: ... in minutes from 1 to 15 where the terminal will automatically close if no characters are sent to the SkyVUE 8M The default is 10 minutes TIME Date_Time Date is in the format yyyy mm dd Time is in the format hh mm ss yyyy year mm month dd day hh hours mm minutes ss seconds For example time 2013 05 25 10 00 00 sets the date and time to May 25 2013 at 10 00 00 Note The set time could drift by up to ...

Page 46: ...eater temperature drops to an average of approximately 40 C ready to be activated again 5 1 4 Application command message types The Application_n parameter for the APPLICATION command defines settings to optimize the ceilometer for a range of applications Aviation Research and Meteorology The default application setting for the SkyVUE 8M is Aviation but this can be changed or returned to using the...

Page 47: ... Backscatter temperal filter rolling samples 3 6 3 BS Message Interval s 30 30 30 BS BS_Temporal_ Filter_Mode Sets Averaging or Median Mode 1 Median 0 Average 0 Average CLOUDMODE CloudMode_A Reports highest cloud only during precipitation ON OFF ON MCFG Message ID 4 CB SC BS 6 CB SC MLH BS 4 CB SC BS UNITS 2 Feet tilt corrected 0 Meters tilt corrected 0 Meters tilt corrected 5 1 5 MCFG command mes...

Page 48: ... 105 CL31 Message 1 No profile data 106 CL31 Message 1 Full SkyVUE 8M output 1600 range bins 5 m resolution 107 CL31 Message 2 770 range bins 10 m resolution 108 CL31 Message 2 385 range bins 20 m resolution 109 CL31 Message 2 1500 range bins 5 m resolution 110 CL31 Message 2 770 range bins 5 m resolution 111 CL31 Message 2 No profile data 112 CL31 Message 2 Full SkyVUE 8M output 1600 range bins 5...

Page 49: ...s follows If message interval measurement period 2 the lowest values allowed then the backscatter average time BS_Av_Time must equal 1 and the rolling average must equal 1 If the message interval is between 3 and 9 s then the measurement period must be the same as the message interval In the following examples yellow means laser firing To comply with the requirements for Sky Condition the total me...

Page 50: ...erage of the latest three measurements Therefore each message is based on three 10 second measurement periods with each containing 2 seconds of backscatter average data Laser firing yellow BS_AV_Time 2 s 2 s Measurement Period 10 s 10 s 10 s 10 s Message Interval 10 s 10 s 10 s 10 s In this case the SkyVUE 8M sends a message every 14 seconds based on one measurement taking 4 seconds over a 14 seco...

Page 51: ...me SN1000 Sensor serial number ID 0 Sensor identification number Line Example line output 2 Date Time 2012 01 10 11 39 46 Description of the line sections Section Description 2012 01 10 Date in the format yyyy mm dd 11 39 46 Time in the format hh mm ss Line Example line output 3 DSP_OS A Description of the line sections Section Description A DSP OS revision number SkyVUE 8M Tactical LIDAR Ceilomet...

Page 52: ...n number Line Example line output 6 Watchdog A Description of the line sections Section Description A Watchdog counter for unscheduled system resets Line Example line output 7 Serial A B C D Description of the line sections Section Description A Serial mode Note Refer to the SERIAL command B Serial baud rate Note Refer to the SERIAL command C Parity and stop bits Note Refer to the SERIAL command S...

Page 53: ...on Description X Message interval Note Refer to the MCFG command A Message ID A Note Refer to the MCFG command B Message ID B Note Refer to the MCFG command C Message ID C Note Refer to the MCFG command D Message ID D Note Refer to the MCFG command E Message ID E Note Refer to the MCFG command Line Example line output 10 Angle A B C Description of the line sections Section Description A X axis til...

Page 54: ...y reading as a percentage C Sensors internal dew point value in degrees Celsius Line Example line output 13 T A B C D E F Description of the line sections Section Description A External fan blower assembly temperature in degrees Celsius B PSU internal temperature in degrees Celsius C TOP board laser monitor temperature in degrees Celsius D TOP board calibration LED temperature in degrees Celsius E...

Page 55: ...1 cycles D Hood heater voltage E Internal heater voltage Line Example line output 15 HOffset A Description of the line sections Section Description A Height offset reported in feet or meters dependent upon the UNITS command Line Example line output 16 Visibility Cap A Description of the line sections Section Description A Vertical visibility maximum range SkyVUE 8M Tactical LIDAR Ceilometer 50 ...

Page 56: ...ine output 18 WindowTX A Description of the line sections Section Description A Window transmittance Line Example line output 19 BS A B C D E F Note refer to the BS command Description of the line sections Section Description A Attenuated scale B Averaging time C Noise Gate D Measurement period E Rolling average F Message interval SkyVUE 8M Tactical LIDAR Ceilometer 51 ...

Page 57: ...Line Example line output 21 Features A Description of the line sections Section Description A List of features enabled SkyVUE 8M Tactical LIDAR Ceilometer 52 ...

Page 58: ...ttery voltage is reading low not applicable to the SkyVUE 8M 0100 XXXX XXXX Mains supply has failed requires a PSU to be present not applicable to the SkyVUE 8M 0080 XXXX XXXX The external heater blower assembly temperature is out of bounds 0040 XXXX XXXX External heater blower failure 0020 XXXX XXXX The PSUs internal temperature is high 0010 XXXX XXXX PSU OS has failed its signature check 0008 XX...

Page 59: ...0 XXXX DSP factory calibration stored in flash has failed its signature check XXXX 0100 XXXX DSP board OS signature test failed XXXX 0080 XXXX DSP board RAM test failed XXXX 0040 XXXX DSP boards on board PSUs are out of bounds XXXX 0020 XXXX TOP board non volatile storage is corrupt XXXX 0010 XXXX TOP board OS signature test has failed XXXX 0008 XXXX TOP boards ADC and DAC are not within specifica...

Page 60: ... XXXX XXXX 0040 Laser did not achieve significant output power XXXX XXXX 0020 Laser max power exceeded XXXX XXXX 0010 Laser max drive current exceeded XXXX XXXX 0008 Laser power monitor temperature out of range XXXX XXXX 0004 Laser power monitor test fail XXXX XXXX 0002 Laser shutdown by top board XXXX XXXX 0001 Laser is off 5 1 8 Message polling The POLL Sensor_ID Message_ID command requests the ...

Page 61: ...his example only default message output was set Therefore the POLL command returns text similar to the following NOTE If you have no message configured the MCFG command returns 0 0 0 0 0 then nothing will be returned from the command you just typed CS0100001 10 100 12345 000000000000 abcd The following example shows how to use the POLL command to request a specific message output type To poll the ...

Page 62: ...me operation according to the previously set operating parameters It will no longer be in terminal mode 5 1 10 Stratocumulus backscatter calibration The SCCAL command allows a simple stratocumulus backscatter calibration of the scatter coefficient measurements This requires a human observer to confirm a stable Stratocumulus cloud layer between 250 m 820 ft to 2500 m 8202 ft without holes precipita...

Page 63: ...or N To confirm type Y and the SkyVUE 8M will respond Old Stratocumulus calibration 0 0282 New Stratocumulus calibration parameters 0 0258 70 1328 Do you want to apply this calibration Y or N In this example 70 is the height of the sensor above sea level previously entered and 1210 is the cloud base in meters above the sensor As a rough guide if the calibration factor has changed by less than 20 t...

Page 64: ...ware sends CR and not CRLF for the command line termination The table below gives some commonly used CRC 16 codes Terminal command CRC 16 open 0 233A close D94E status 7CE5 password EB85 terminal 0 this command will remove CRC 16 checking B576 defaults 7D8E serial 7FCE 5 1 12 Service command The service command triggers the SkyVUE 8M to go through a series of tests including tests that require the...

Page 65: ...urement Place white test surface onto detector window left side fan at the top Press Enter to continue Cover the detector window and press Enter The computer will respond wait for new measurement Place white test surface onto laser window right side fan at the top Press Enter to continue Cover the laser window and press Enter The computer will respond wait for new measurement Remove white test sur...

Page 66: ...y and the detail and operation of the sensor WARNING Opening the access lid may expose hot surfaces Use a narrow tool such as a screw driver to reach the reset switch If the reset switch is pushed for four seconds the SkyVUE 8M will reboot in exactly the same way as the REBOOT terminal command If it is held closed while the SkyVUE 8M is powered off and on again it will return to factory defaults T...

Page 67: ... board firmware fault 1 flash every 10 seconds OK no fault 2 flashes every 10 seconds warning possible degraded performance 3 flashes every 10 seconds alarm measurements not possible 6 Messages 6 1 Data messages general 63 6 2 Checksums used in SkyVUE 8M messages 63 6 3 CS messages 64 6 4 CL31 messages 77 6 5 CT25K messages 86 SkyVUE 8M Tactical LIDAR Ceilometer 62 ...

Page 68: ...e CRC 16 with the output XOR d with Hex 0xFFFF and outputs a two byte CRC 16 character The CRC 16 is calculated on all characters after the SOH character up to and including the ETX character The following example uses the C code to calculate the SkyVUE 8M checksum NOTE Shorts are 16 bits long and ints are 32 bits long Calculate CRC 16 buf is a pointer to the input string len is the length of the ...

Page 69: ...system 001 to 999 N 3 characters Message number STX Start of Text Character CR LF Carriage Return Line Feed LINE 2 S WAV trVh1Vh2Vh3Vh4Vflags CR LF where S 1 character detection status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Four cloud bases detected 5 Full obscuration determined but no cloud base detected 6 Some obscuration ...

Page 70: ...us is 0 1 2 5 or 6 h3 h4 5 characters 4th Height If detection status is 4 h4 Fourth cloud base reported If detection status is 0 1 2 3 or 5 h4 flags 12 characters in 3 groups of 4 Alarm or warning information Table 6 1 Most significant alarm word for CS messages Bit1 Description 8000 XXXX XXXX Units Feet 0 meter 1 4000 XXXX XXXX Reserved for future use 2000 XXXX XXXX Reserved for future use 1000 X...

Page 71: ...e sum of error bits Table 6 2 Middle alarm word for CS messages Bit1 Description XXXX 8000 XXXX The sensors internal humidity is high XXXX 4000 XXXX Communications to the DSP board temperature and humidity chip have failed XXXX 2000 XXXX DSP input supply voltage is low XXXX 1000 XXXX Self test active XXXX 0800 XXXX Watch dog counter updated XXXX 0400 XXXX User setting stored in flash failed their ...

Page 72: ...e XXXX XXXX 1000 Photo diode calibrator has failed XXXX XXXX 0800 The sensor could not reach the desired gain levels XXXX XXXX 0400 Laser run time or maximum laser drive current has been exceeded XXXX XXXX 0200 Laser temperature out of range XXXX XXXX 0100 Laser thermistor failure XXXX XXXX 0080 Laser is obscured This can only be set if the laser is on XXXX XXXX 0040 Laser did not achieve signific...

Page 73: ...0100 05 2048 100 40 02 0074 0070 30 000 0c5df047 00000 Line output cropped for clarity 9f68 LINE 1 SOH CS ID OS N STX CR LF where SOH Start of Heading character CS Always CS ID 1 character A single character 0 to 9 a to z or A to Z case sensitive Default ID 0 OS 3 characters Operating system 001 to 999 N 3 characters Message number STX Start of Text Character CR LF Carriage Return Line Feed LINE 2...

Page 74: ...tion status is 5 h1 Vertical visibility as calculated If detection status is 0 or 6 h1 h2 5 characters 2nd Height If detection status is 2 3 or 4 h2 Second cloud base reported If detection status is 5 h2 Highest signal received If detection status is 0 1 or 6 h2 h3 5 characters 3rd Height If detection status is 3 or 4 h3 Third cloud base reported If detection status is 0 1 2 5 or 6 h3 h4 5 charact...

Page 75: ...aracters Sample rate MHz 00 to 99 sum 3 characters Sum of detected and normalized backscatter 0 to 999 Multiplied by scaling factor times 104 At scaling factor 100 the SUM range 0 to 999 corresponds to integrated backscatter 0 to 0 srad 1 CR LF Carriage Return Line Feed LINE 4 SSSSSSSSSSSSSSSSSSSSSSSSSSSSS 2048 x 5 bytes CR LF The two way attenuated normalized backscatter profile Backscatter profi...

Page 76: ...tem 001 to 999 N 3 characters Message number STX Start of Text Character CR LF Carriage Return Line Feed LINE 2 S WAVtrVh1Vh2Vh3Vh4Vflags CR LF where S 1 character detection status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Four cloud bases detected 5 Full obscuration determined but no cloud base detected 6 Some obscuration dete...

Page 77: ...hird cloud base reported If detection status is 0 1 2 5 or 6 h3 h4 5 characters 4th Height If detection status is 4 h4 Fourth cloud base reported If detection status is 0 1 2 3 or 5 h4 flags 12 characters in 3 groups of 4 Alarm or warning information Refer to Message 001 for a breakdown of the flags CR LF Carriage Return and Line Feed LINE 3 _d_h1__d2_h2__d3_h3__d4_h4__d5_h5 CR LF note spaces wher...

Page 78: ...er in oktas h5 4 characters Height of the 5th cloud layer in 10 s of meters or 100 s of feet if no 5th layer is reported h5 CR LF Carriage Return Line Feed NOTE Cloud amounts and heights cannot be reported until the SkyVUE 8M has been in operation for 30 minutes LINE 4 ETX CRC 16 EOT CR LF where ETX End of Text character CRC 16 4 characters CRC 16 Checksum EOT End of Transmission character CR LF C...

Page 79: ...ne cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Four cloud bases detected 5 Full obscuration determined but no cloud base detected 6 Some obscuration detected but determined to be transparent Raw data input to algorithm missing or suspect WA 1 character Warning or alarm status 0 No alarm or warning W Warning A Alarm Tr 3 characters Window transmission h1 5 characte...

Page 80: ...aces where d 2 characters Data available _0 to _8 Amount of lowest layer in oktas _9 Vertical visibility only available 1 No sky condition data available 99 Insufficient data h1 4 characters Height of the lowest cloud layer in 10 s of meters or 100 s of feet d2 1 character Cloud amount of the 2nd layer in oktas h2 4 characters Height of the 2nd cloud layer in 10s of meters or 100 s of feet if no 2...

Page 81: ...ing Laser temperature degrees C ti 2 characters Total tilt angle degrees bl 4 characters Background light millivolts at internal ADC input 0 to 2500 pulse 4 characters Pulse quantity x 1000 0000 to 9999 rate 2 characters Sample rate MHz 00 to 99 sum 3 characters Sum of detected and normalized backscatter 0 to 999 Multiplied by scaling factor times 104 At scaling factor 100 the SUM range 0 to 999 c...

Page 82: ... where SOH Start of Heading character CL Always CL ID A single character 0 to 9 a to z or A to Z case sensitive Default ID 0 OS Operating system 100 to 999 1 Always 1 Samples backscatter resolution and number of samples 1 MESSAGE 101 10 m x 770 samples range 7700 m 2 MESSAGE 102 20 m x 385 samples range 7700 m 3 MESSAGE 103 5 m x 1500 samples range 7500 m 4 MESSAGE 104 5 m x 770 samples range 3850...

Page 83: ...art of Text Character CR LF Carriage Return Line Feed LINE 2 S WAVtrVh1Vh2Vh3Vh4Vflags where S 1 character detection status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Full obscuration determined but no cloud base detected 5 Some obscuration detected but determined to be transparent Raw data input to algorithm missing or suspect ...

Page 84: ...t significant alarm word for CS31 messages Bit1 Description 8000 XXXX XXXX Transmitter shut off 4000 XXXX XXXX Transmitter failure 2000 XXXX XXXX Receiver failure 1000 XXXX XXXX Reserved for future use 0800 XXXX XXXX Reserved for future use 0400 XXXX XXXX Memory error 0200 XXXX XXXX Light path obstruction 0100 XXXX XXXX Receiver saturation 0080 XXXX XXXX Reserved for future use 0040 XXXX XXXX Rese...

Page 85: ...XX 0020 XXXX Ceilometer engine board failure XXXX 0010 XXXX Reserved for future use XXXX 0008 XXXX Laser monitor failure XXXX 0004 XXXX Receiver warning XXXX 0002 XXXX Tilt beyond limit set by user default 45 degrees XXXX 0001 XXXX Reserved for future use 1 Alarm words are sum of error bits Table 6 6 Least significant alarm word for CS31 messages Bit1 Description XXXX XXXX 8000 Blower is on XXXX X...

Page 86: ... Carriage Return Line Feed LINE 3 scaleVresVnV energyVltVtrVti_blVL0112HN15Vsum CR LF where scale 5 characters Scale parameter 0 to 99999 100 is typical res 2 characters Backscatter profile resolution in meters n 4 characters Profile length 385 770 1400 or 1500 samples energy 3 characters Laser pulse energy lt 3 characters including leading Laser temperature degrees C tr 3 characters Window transm...

Page 87: ...acter CRC 16 4 characters CRC 16 Checksum EOT End of Transmission character CR LF Carriage Return Line Feed 6 4 3 MESSAGES 107 112 CL31 Message 2 Example message 107 line outputs CL017021 10 01407 00000000E080 99 0 0 0 0 00100 10 0770 100 40 095 02 0031 L0112HN30 000 03301009 027F Line output cropped for clarity e669 LINE 1 SOH CL ID OS 2 Samples STX CR LF where SOH Start of Heading character CL A...

Page 88: ...gnificant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Full obscuration determined but no cloud base detected 5 Some obscuration detected but determined to be transparent Raw data input to algorithm missing or suspect WA 1 character Warning or alarm status 0 No alarm or warning W Warning A Alarm h1 5 characters 1st Height If detection status is 1 ...

Page 89: ...tas h2h2h2 3 characters Height of the 2nd cloud layer in 10 s of meters or 100 s of feet if no 2nd layer is reported h2h2h2 d3 1 character Cloud amount of the 3rd layer in oktas h3h3h3 3 characters Height of the 3rd cloud layer in 10 s of meters or 100 s of feet if no 3rd layer is reported h3h3h3 d4 1 character Cloud amount of the 4th layer in oktas h4h4h4 3 characters Height of the 4th cloud laye...

Page 90: ...internal ADC input 0 to 2500 L0112HN15 9 characters Reserved defaults shown sum 3 characters Sum of detected and normalized backscatter 0 to 999 Not used in Operating System 1 CR LF Carriage Return Line Feed NOTE This line is omitted from message 111 LINE 5 SSSSSSSSSSSSSSSSSSSSSSSSSSSSS 5 x 770 bytes CR LF The two way attenuated normalized backscatter profile see Backscatter profile reporting p 7 ...

Page 91: ...f Text Character CR LF Carriage Return Line Feed LINE 2 S WAVh1Vh2Vh3Vflags CR LF where S 1 character detection status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Full obscuration determined but no cloud base detected 5 Some obscuration detected but determined to be transparent Raw data input to algorithm missing or suspect WA 1 ...

Page 92: ...significant alarm word for CT25K messages Bit1 Description 8000 XXXX Transmitter shut off 4000 XXXX Transmitter failure 2000 XXXX Receiver failure 1000 XXXX DSP voltage or memory failure 0800 XXXX Reserved for future use 0400 XXXX Reserved for future use 0200 XXXX Reserved for future use 0100 XXXX Reserved for future use 0080 XXXX Window contaminated 0040 XXXX Battery low not applicable to the Sky...

Page 93: ...n feet if off XXXX 0080 Polling mode on XXXX 0040 Working from battery not applicable to the SkyVUE 8M XXXX 0020 Always 0 XXXX 0010 Always 0 XXXX 0008 Tilt beyond limit set by user default 45 degrees XXXX 0004 High radiance warning also 0008 XXXX XXXX 0002 Reserved for future use XXXX 0001 Reserved for future use 1 Alarm words are sum of error bits CR LF Carriage Return Line Feed LINE 3 ETX CR LF ...

Page 94: ...haracter CR LF Carriage Return Line Feed LINE 2 S WAVh1Vh2Vh3Vflags CR LF where S 1 character detection status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Full obscuration determined but no cloud base detected 5 Some obscuration detected but determined to be transparent Raw data input to algorithm missing or suspect WA 1 characte...

Page 95: ...d3_h3h3h3__d4_h4h4h4 CR LF note spaces where d 1 character Data available 0 to 8 Amount of lowest layer in oktas 9 Vertical visibility only available 1 No sky condition data available 99 Insufficient data h1h1h1 3 characters Height of the lowest cloud layer in 10 s of meters or 100 s of feet d2 1 character Cloud amount of the 2nd layer in oktas h2h2h2 3 characters Height of the 2nd cloud layer in ...

Page 96: ... error messages 7 2 Cleaning The SkyVUE 8M window will require cleaning from time to time The frequency of required cleaning depends on the exposure of the instrument to contaminants such as salt and dust This will vary depending on the site location The SkyVUE 8M is capable of self diagnosing dirty lenses and will indicate in its output when the lenses are contaminated In any case we suggest six ...

Page 97: ...ive pressure may lead to some types of contaminants scratching the window surface Over time such scratches can lead to reduced sensitivity 7 3 Diagnostic LED indicators within the enclosure The LASER ON and STATUS green LEDs are visible on the DSP see FIGURE 7 1 p 93 Their function is as follows LASER ON LED Off laser off Flashing laser fault On laser on STATUS LED 1 flash every 10 seconds OK 2 fl...

Page 98: ...FIGURE 7 1 Diagnostic LED indicators The red LED on the laser module indicates Off Laser off On Laser on SkyVUE 8M Tactical LIDAR Ceilometer 93 ...

Page 99: ...the backscatter calibration constants l Remove the laser and electronic artefact signature This is specific to the individual SkyVUE 8M and determined during calibration A 2 Backscatter onset height detection l Filter the backscatter with 20 m 65 6 ft and 300 m 984 ft width filters l Look for a 1500 m 4921 ft block width where the standard deviation is at a minimum for both the 20 m 65 6 ft and 30...

Page 100: ...not tilt corrected l Smooth with a 20 m 65 6 ft width running average l A noise gate can be applied based on a multiple of the 20 m 65 6 ft detection threshold this is customer configurable l The lower height range bins do not gate noise until the backscatter reaches zero This allows the full extent of mixing layers to be viewed in gating mode SkyVUE 8M Tactical LIDAR Ceilometer 95 ...

Page 101: ... an average of 3200 m 10 499 ft with a slope of 91 m 299 ft per bin starting at an altitude of 1000 m 3280 ft To report a cloud layer above a lower one the scatter coefficient first has to fall below the extinction threshold used for cloud definitions less a small hysteresis offset The scatter profile must then again meet the criteria above If rain is detected the sensitivity of detection is incre...

Page 102: ...f the hits in the latest 10 minutes are vertical visibility then the vertical visibility averaged over the last 10 minutes is reported Only hits below the vertical visibility height limit set are used The buffer is sorted in height order and hits combined into bins with the following widths Height Bin width 0 5000 ft 0 1524 m 100 ft 30 5 m 5000 15 000 ft 1524 4572 m 200 ft 61 m 15 000 26 250 ft 45...

Page 103: ...ight 8000 ft 300 m 1000 ft Height 2400 m 8000 ft 480 m 1600 ft Weights per layer are used to calculate number of oktas per layer If the total possible is Wmax then the cover is Wi Wmax x 8 Cloud amounts are rounded up to the next highest whole oktas For layers above the lowest this is based on the maximum possible weights If the lower layers have W1 hits and the next layer has W2 hits then the cov...

Page 104: ...n the chassis plate that are on the bent up tabs on the left and right hand sides 4 Pull the PSU forward removing the PSU 5 Loosen the four screws holding the PSU in place and slide off the PSU 6 Re insert the new PSU and push back into position 7 Replace the two screws on the chassis plate 8 Re attach the cable plugs into the correct sockets on the new PSU ensuring that each is connected properly...

Page 105: ...SkyVUE 8M Tactical LIDAR Ceilometer 100 ...

Page 106: ...pply Unit PSU including the battery NOTE It is very important to disconnect all sources of power from the SkyVUE 8M to ensure that the laser is not powered 4 Unscrew the two securing screws from the PSU chassis plate so it can be pulled out to gain better access to the Laser and APD module 5 Now the Laser module and avalanche photo diode APD module will be visible SkyVUE 8M Tactical LIDAR Ceilomet...

Page 107: ...s WARNING Do not replace screws with different length screws 8 Remove any protective film from the filters of the new APD and laser modules before mounting them 9 Once the screws have been removed pull the module off the locating pins Fit the new module by pushing it onto the locating pins and then re assembling in reverse order using the original screws spring washers and plain washers 10 Reconne...

Page 108: ...her manufacturer s products that are resold by Campbell Scientific are warranted only to the limits extended by the original manufacturer Refer to www campbellsci com terms warranty for more information CAMPBELL SCIENTIFIC EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Campbell Scientific hereby disclaims to the fullest extent allowed...

Page 109: ...tion or Repair Reference number contact your CAMPBELL SCIENTIFIC regional office Please write the issued number clearly on the outside of the shipping container and ship as directed For all returns the customer must provide a Statement of Product Cleanliness and Decontamination or Declaration of Hazardous Material and Decontamination form and comply with the requirements specified in it The form i...

Page 110: ...prohibit climbing by other persons Take reasonable precautions to secure tripod and tower sites from trespassers l Use only manufacturer recommended parts materials and tools Utility and Electrical l You can be killed or sustain serious bodily injury if the tripod tower or attachments you are installing constructing using or maintaining or a tool stake or anchor come in contact with overhead or un...

Page 111: ...info campbellsci fr www campbellsci fr Germany Location Phone Email Website Bremen Germany 49 0 421 460974 0 info campbellsci de www campbellsci de India Location Phone Email Website New Delhi DL India 91 11 46500481 482 info campbellsci in www campbellsci in South Africa Location Phone Email Website Stellenbosch South Africa 27 21 8809960 sales campbellsci co za www campbellsci co za Spain Locati...

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