Campbell SkyVUE 8M Product Manual
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Campbell SkyVUE 8M Product Manual

Tactical lidar ceilometer
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Revision: 11/2020
Copyright © 2020
Campbell Scientific, Inc.

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Summary of Contents for Campbell SkyVUE 8M

  • Page 1 Revision: 11/2020 Copyright © 2020 Campbell Scientific, Inc.

  • Page 2: Table Of Contents

    2.4.7 Transport, shock, and vibration certification 2.4.8 Compliance and testing 3. Initial preparation and checks 4. Installation 4.1 Location and orientation 4.2 Grounding 4.3 Mounting the SkyVUE 8M 4.4 Tilt angle 4.5 Connectors and wiring 4.5.1 Base connectors Table of Contents - i...
  • Page 3 4.8 Storage information 4.9 Fitting the camouflage cover 5. Operation 5.1 Terminal mode 5.1.1 Entering/exiting the SkyVUE 8M terminal mode 5.1.2 Terminal mode commands general 5.1.3 Terminal mode command examples 5.1.4 Application command message types 5.1.5 MCFG command message types 5.1.6 Measurement and message intervals...
  • Page 4 FIGURE 4-3. Cable connections FIGURE 4-4. USB port FIGURE 4-5. Ceilometer bird spike kit installed FIGURE 4-6. Preparing the SkyVUE 8M for installing the bird spikes FIGURE 4-7. Attaching bird spikes to the SkyVUE 8M cowl FIGURE 5-1. Restoring factory defaults FIGURE 5-2.
  • Page 5 Table 4-2: Function of the connector pins for the blower/heater connector Table 5-1: Summary of the terminal mode commands available Table 5-2: Summary of applications and applied settings for SkyVUE 8M Table 5-3: Summary of message ID and descriptions Table 6-1: Most significant alarm word for CS messages...

  • Page 6: General Information

    1.2 General safety 1.3 Sensor unit safety 1.4 Laser safety 1.5 Electrical safety 1.1 Packing list The following table lists the products shipped with the SkyVUE 8M. Table 1-1: Packing list Description Quantity Ceilometer Cable, USB type A plug to type B plug, 2 m...

  • Page 7: Sensor Unit Safety

    The SkyVUE 8M sensor has been checked for safety before leaving the factory and contains no parts that need to be changed during normal use. WARNING: Do not modify the SkyVUE 8M unit. Such modifications will lead to damage of the unit and could expose users to dangerous light levels and voltages. WARNING: Do not attempt to repair the SkyVUE 8M unit without consulting Campbell Scientific.
  • Page 8 CLASS 1M LASER PRODUCT WARNING: Removing the laser module with the power applied to the SkyVUE 8M may expose the user to hazardous class 3B laser radiation. No attempt should be made to operate the laser module outside of the housing.

  • Page 9: Electrical Safety

    FIGURE 1-1. Location of laser warning label Before removing the laser module, the sensor must be physically disconnected from its power supply to ensure that the laser is turned off. 1.5 Electrical safety The sensor is powered from a low voltage supply (Electrical specifications (p.

  • Page 10: Product Overview

    The SkyVUE 8M has electrical and laser warning labels on the exterior and interior of the unit. It is recommended that the hood and access panel door are not opened in conditions of rain, hail or snow.

  • Page 11: Introduction

    If significant scattering is detected without a defined cloud base, then a vertical visibility can be calculated. The control system of the SkyVUE 8M is divided into three modules, DSP, TOP and PSU as follows: DSP (Digital Signal Processor) is the main data processing and communications unit of the SkyVUE 8M.

  • Page 12: Sky Condition

    Sky condition is an assessment of cloud cover measured in units of eighths known as oktas. The number of oktas is the density of cloud in eighths of that layer. The SkyVUE 8M can report up to five layers of cloud when reporting sky condition. The algorithm used in the SkyVUE 8M follows guidance in the ICAO 9837, Manual on Automatic Meteorological Observing Systems at Aerodromes.

  • Page 13: Optical Measurement

    2.2 Optical measurement FIGURE 2-1. Principle of operation 2.2.1 Optical arrangement The SkyVUE 8M uses a single lens design that increases optical signal-to-noise ratio, while maintaining Class 1M eye safety by integrating larger optics into a compact package (see FIGURE (p.

  • Page 14: Specifications

    (see Operation (p. 24)) include this information allowing remote diagnosis of the SkyVUE 8M condition. In addition, a special status message can be polled. 2.4 Specifications 2.4.1 Measurement specifications 2.4.2 Mechanical specifications 2.4.3 Electrical specifications 2.4.4 Optical specifications 2.4.5 Environmental specifications 2.4.6 Communications specifications...

  • Page 15: Electrical Specifications

    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 .)

  • Page 16: Figure 2-3. Psu Types

    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.

  • Page 17: Optical Specifications

    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 baud Supported standards: RS-232 (default) If RS-485 half-duplex is required, contact Campbell Scientific. SkyVUE™8M Tactical LIDAR Ceilometer...

  • Page 18: Transport, Shock, And Vibration Certification

    – USB Service Port USB1.1 and 2.0 compatible, fixed 115200 baud. 2.4.7 Transport, shock, and vibration certification When contained within the military transport case from Campbell Scientific (see Military transport case (p. 22)), the SkyVUE 8M complies with the following standards:...

  • Page 19: Initial Preparation And Checks

    3. Initial preparation and checks The following steps will provide basic familiarization with the SkyVUE 8M and perform basic functionality checks. To do these, and connect the sensor to its power supply. WARNING: The laser begins operating as soon as the power is connected. Do not point the laser in any direction where it could be viewed with magnifying optics.

  • Page 20: Installation

    However, there are a few considerations to 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.

  • Page 21: Mounting The Skyvue 8M

    4.3 Mounting the SkyVUE 8M 1. Mount the SkyVUE 8M in an upright position in a suitably level and secure location; the adjustable leveling feet should help to achieve this. 2. Secure on soft substrates using the ground spikes provided or on any surface using heavy sand-bags.

  • Page 22: Tilt Angle

    The SkyVUE 8M has tilt sensors in both axes to compensate the cloud height when the base is not level. Set or disable cloud height compensation by using the UNITS command...

  • Page 23: Base Connectors

    4.5.1 Base connectors The SkyVUE 8M has one connector on its base for communications and power to the unit. NOTE: Tilting the unit provides better access to these connectors. FIGURE 4-2. Connector layout The function of the connector pins is shown in Table 4-1 (p.

  • Page 24: Wiring Using Supplied Campbell Scientific Cables

    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 communications. Please contact Campbell Scientific if longer cables are required. WARNING: Incorrectly wiring the power cable can cause irrevocable damage to the unit.

  • Page 25: Power Connections

    4.5.2.2 Communications connections 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.

  • Page 26: Usb Connection

    The USB port provided inside 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.

  • Page 27: Military Transport Case

    (p. 13)). Ensure that the SkyVUE 8M and accessories are appropriately located and that the lid of the case is secured by each of the securing clasps before moving or transporting the case. While it is ruggedly constructed, do not overload the case or store heavy items upon it.

  • Page 28: Figure 4-6. Preparing The Skyvue 8M For Installing The Bird Spikes

    FIGURE 4-6. Preparing the SkyVUE 8M for installing the bird spikes FIGURE 4-7. Attaching bird spikes to the SkyVUE 8M cowl Wrap the stainless steel wire around each spike using the grooves in the spike then wrap it back on itself.

  • Page 29: Storage Information

    1. Ensure that the door of theSkyVUE 8M is closed and secure and that the power and communications 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.

  • Page 30: Entering/Exiting The Skyvue 8M Terminal Mode

    Default is 0. Enter the password 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.

  • Page 31: Terminal Mode Command Examples

    Flow control none none The baud rate of the SkyVUE 8M must match the port setting baud rate in the terminal emulator. The SkyVUE 8M should now be ready to accept commands. NOTE: Commands will always output all parameters on a new line after a CR LF (carriage return and line feed) and then the SkyVUE 8M prompt CS136>.

  • Page 32: Table 5-1: Summary Of The Terminal Mode Commands Available

    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 settings in BS, MCFG, and UNITS. Attenuated_ Rules for BS command are: SCALE, ...
  • Page 33 Measurement_Period = 0 or 2 to 600 seconds (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.
  • Page 34 = user volume version OS_VER = DSP OS version PsuOsVer = PSU OS version TopOsVer = TOP OS version Id = SkyVUE 8M ID Pw = SkyVUE 8M password terminalCrc = terminal crc mode terminalTimeout = terminal timeout unitsTiltMode = units and tilt mode...
  • Page 35 Description parameter block interval in hours battBoost_mV = boost voltage used for battery charging mV (not applicable to the SkyVUE 8M) battCharge_mA = battery charge current mA (not applicable to the SkyVUE 8M) psuPresent = PSU present switch hoodHBNormSpeed = fan voltage for normal speed...
  • Page 36 Table 5-1: Summary of the terminal mode commands available Parameter/ Command Description parameter block seconds rollingAvMeasurements = number used for setting the rolling average serialserMode = serial port mode serialbaudSel = serial port baud rate mode serialdataParityStop = serial port parity mode serialrx2txTimeout = serial port RX to TX turnaround time...
  • Page 37 CRC using the standard CRC- Note: Many parameters are not adjusted. This command allows a reliable technique for copying full settings from one SkyVUE 8M to another with the SETUSER command. A typical response to the GETUSER command is: >>>>>...
  • Page 38 Table 5-1: Summary of the terminal mode commands available Parameter/ Command Description parameter block 1.000E+00 0 1.000E+00 0 10 1 0 10 0 100 4.000E+00 6.000E+00 2.000E-03 2.500E-04 1.000E+03 2.200E+01 4.800E+03 1.000E-01 9.000E-01 2.500E-04 2.000E+03 4.500E+01 2.000E+00 50 2.00E-03 3.000E+01 1.500E+02 1.800E+00 5.000E+00 1.000E+01 150 98b2 <<<<<...
  • Page 39 Instructs the SkyVUE 8M to turn the laser off until either a power cycle or the sensor is instructed to turn the laser back on. LASERON No parameters Instructs the SkyVUE 8M to try and turn the laser on LOADOS Module Loads new operating system MCFG...
  • Page 40 Requests Message_ID from Sensor_ID. Message_ID Refer to Message polling (p. 55) for more information on this command Note: If Message_ID is omitted, the SkyVUE 8M outputs the message configured by MCFG. POWEROFF Not applicable for SkyVUE 8M. REBOOT No parameters Forces a system reboot.
  • Page 41 OS_VER = DSP OS version (not changed) PsuOsVer = PSU OS version (not changed) TopOsVer = TOP OS version (not changed) Id = SkyVUE 8M ID (not changed) Pw = SkyVUE 8M password (not changed) terminalCrc = terminal crc mode terminalTimeout = terminal timeout SkyVUE™8M Tactical LIDAR Ceilometer...
  • Page 42 = hood heater / fan heater mode hoodHBTestInt = hood heater / blower test interval in hours battBoost_mV = not applicable to SkyVUE 8M battCharge_mA = not applicable to SkyVUE 8M psuPresent = PSU present switch hoodHBNormSpeed = Fan voltage for normal...
  • Page 43 Table 5-1: Summary of the terminal mode commands available Parameter/ Command Description parameter block measurementPeriod = measurement interval in seconds rollingAvMeasurements = number used for the rolling average serialserMode = serial port mode serialbaudSel = serial port baud rate mode serialdataParityStop = serial port parity mode serialrx2txTimeout = serial port RX to TX...
  • Page 44 STATUS No parameters Outputs SkyVUE 8M, serial number, ID, DSP OS version, Time and Date, DSP version, TOP OS version, PSU OS version, watch dog counts, serial parameters, blower heater mode, internal heater mode, message...
  • Page 45 Sets the user terminal time out. Timeout Timeout is the delay 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...

  • Page 46: 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 Application_n command.

  • Page 47: Mcfg Command Message Types

    Table 5-2: Summary of applications and applied settings for SkyVUE 8M Application modes for SkyVUE 8M using OS2 and newer Aviation Settings Research Meteorology (default) BS: Attenuated scale (%) BS: Backscatter averaging time (s) BS: Noise Gate 2 (ON) -1000 (OFF)

  • Page 48: Measurement And Message Intervals

    CL31 Message 1, 770 range bins, 5 m resolution CL31 Message 1, No profile data CL31 Message 1, Full SkyVUE 8M output, 1600 range bins, 5 m resolution CL31 Message 2, 770 range bins, 10 m resolution CL31 Message 2, 385 range bins, 20 m resolution...
  • Page 49 Message Interval = 2 s In this case, with the rolling average set to 1, the SkyVUE 8M sends a message every 30 seconds. It takes three, 2 second, measurements at 10 second intervals. Only the last measurement is used in the output message but all three are used for calculating sky condition.
  • Page 50 Message Interval = 30 s 30 s In this case, with the rolling average set to 3, the SkyVUE 8M sends a message every 30 seconds that contains the average 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.

  • Page 51: Status Command

    5.1.7 Status command The STATUS command returns the following information: Line Example line output Identification CS136 SN1000 ID 0 Description of the line sections Section Description CS136 Product name SN1000 Sensor serial number ID 0 Sensor identification number Line Example line output Date Time 2012/01/10 11:39:46 Description of the line sections Section...
  • Page 52 Line Example line output TOP_OS_HW 8 2 Description of the line sections Section Description TOP board OS revision number Line Example line output PSU_OS 1 Description of the line sections Section Description PSU board OS revision number Line Example line output Watchdog A Description of the line sections Section...
  • Page 53 Line Example line output Heaters A B C D Description of the line sections Section Description Hood blower mode Internal heater mode Laser heater mode Heater/blower test interval in hours Line Example line output MCFG   X A B C D E Description of the line sections Section Description...
  • Page 54 Line Example line output Units A Description of the line sections Section Description Measurement units and tilt correction. (Note: Refer to the UNITS command) Line Example line output TRH   A B C Description of the line sections Section Description Sensor internal temperature reading in degrees Celsius Sensor internal humidity reading as a percentage Sensors internal dew point value in degrees Celsius Line...
  • Page 55 Line Example line output SupplyVoltage A B Description of the line sections Section Description DSP board supply voltage internal supply voltage Cyclic power cycle counter. Resets after 31 cycles Hood heater voltage Internal heater voltage Line Example line output HOffset A Description of the line sections Section Description...
  • Page 56 Line Example line output LaserRunDays   A Description of the line sections Section Description Number of days that the laser module has been active for Line Example line output WindowTX A Description of the line sections Section Description Window transmittance % Line Example line output BS A B C D E F (Note: refer to the BS command) Description of the line sections...
  • Page 57 Line Example line output Features A Description of the line sections Section Description List of features enabled SkyVUE™8M Tactical LIDAR Ceilometer...
  • Page 58 0200 XXXX XXXX SkyVUE 8M) Mains supply has failed (requires a PSU to be present) (not applicable 0100 XXXX XXXX to the SkyVUE 8M) 0080 XXXX XXXX The external heater blower assembly temperature is out of bounds 0040 XXXX XXXX...
  • Page 59 Description of the middle alarm word (middle word, bits going left to right) Description XXXX 8000 XXXX The sensors internal humidity is high Communications to the DSP boards temperature and humidity chip XXXX 4000 XXXX have failed XXXX 2000 XXXX DSP input supply voltage is low XXXX 1000 XXXX Self-test active...

  • Page 60: Message Polling

    (p. 42). The following example uses the SkyVUE 8M POLL command to request preconfigured message outputs. First configure the SkyVUE 8M to use polling mode from the terminal interface via the MCFG command as follows: MCFG 0 0 1 0 0 0 0...

  • Page 61: Loading A New Operating System (Os)

    This configures the SkyVUE 8M into polling mode leaving your message output configurations unchanged. Exit the terminal by typing the CLOSE command. This will save the changes you just made. CLOSE COMMAND CLOSED Automatic message outputs should continue. Type the POLL command as shown below to verify that the system is working as expected.

  • Page 62: Stratocumulus Backscatter Calibration

    Updating TOP OS, please wait..PASS Updating PSU OS, please wait..PASS Wait 40 sec for OS to restart Afterwards, the SkyVUE 8M will resume 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.
  • Page 63 Enter the sensor height above sea level, for example 70 m then type return. The SkyVUE 8M will respond: 70 m entered, is this correct? “Y”, “N” or “Q” Type Y to confirm. If you have entered an incorrect number, type N and you will be able to replace it.

  • Page 64: Codes On Terminal Commands

    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 white test surface (ceilometer calibration plate supplied) to be placed on the SkyVUE 8M windows. The service command results in the following procedures:...

  • Page 65: Locked Features

    5.1.13 Locked features Optional features are protected by a key. They are enabled by typing UNLOCK followed by entering the key. This is specific to the individual SkyVUE 8M and only has to be entered once. SkyVUE™8M Tactical LIDAR Ceilometer...

  • Page 66: Restoring Factory Defaults

    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.

  • Page 67: Led Indicator

    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 6.2 Checksums used in SkyVUE 8M messages 6.3 CS messages 6.4 CL31 messages 6.5 CT25K messages...

  • Page 68: Data Messages General

    6.1 Data messages general The SkyVUE 8M can provide a variety of data message types to allow efficient output of data. Not all messages provide the full information available, but these messages may be more efficient in terms of data storage and transmission.

  • Page 69: Cs Messages

    6.3 CS messages 6.3.1 MESSAGE 001 (no profile, no sky condition) Example message line outputs CS0001001 10 087 00139 ///// ///// ///// 800000000000 942f 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.

  • Page 70: Table 6-1: Most Significant Alarm Word For Cs Messages

    The lead acid battery voltage is reading low (not applicable to the 0200 XXXX XXXX SkyVUE 8M) Mains supply has failed (requires a PSU to be present) (not applicable 0100 XXXX XXXX to the SkyVUE 8M) SkyVUE™8M Tactical LIDAR Ceilometer...

  • Page 71: Table 6-2: Middle Alarm Word For Cs Messages

    Table 6-1: Most significant alarm word for CS messages Description 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 XXXX XXXX No communications between DSP and PSU...

  • Page 72: Table 6-3: Least Significant Alarm Word For Cs Messages

    Table 6-2: Middle alarm word for CS messages Description XXXX 0008 XXXX TOP boards ADC and DAC are not within specifications XXXX 0004 XXXX TOP boards on board PSUs are out of bounds XXXX 0002 XXXX Communications have failed between TOP board and the DSP XXXX 0001 XXXX Photo diode background radiance is out of range Alarm words are sum of error bits.

  • Page 73: Message 002 (Profile, No Sky Condition)

    LINE 3 ETX CRC-16 EOT CR LF where ETX = End-of-Text character CRC-16 (4 characters) = CRC-16 Checksum EOT = End-of-Transmission character CRLF = Carriage Return + Line Feed 6.3.2 MESSAGE 002 (Profile, no sky condition) Example message line outputs CS0001002 10 085 01123 ///// ///// ///// 800000000000 00100 05 2048 100 +40 02 0074 0070 30 000...
  • Page 74 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 detected but determined to be transparent / = Raw data input to algorithm missing or suspect WA (1 character) = Warning or alarm status:...
  • Page 75 where scale (5 characters) = Attenuated_SCALE parameter, %, 0 to 99999. 100% is default res (2 characters) = Backscatter profile resolution in meters n (4 characters) = Profile length energy (3 characters) = Laser pulse energy, %. lt (3 characters including leading +/-) = 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)

  • Page 76: Message 003 (No Profile, Sky Condition)

    6.3.3 MESSAGE 003 (no profile, sky condition) Example message line outputs CS0001003 10 091 00828 ///// ///// ///// 800000000000 99 //// 0 //// 0 //// 0 //// 0 //// f62a LINE 1 SOH CS ID OS N STX CR LF where SOH = Start-of-Heading character CS = Always CS...
  • Page 77 WA (1 character) = Warning or alarm status: 0 = No alarm or warning W = Warning A = Alarm tr (3 characters) = Window transmission, % h1 (5 characters) = 1st Height If detection status is 1, 2, 3, or 4 h1 = Lowest cloud base reported If detection status is 5 h1 = Vertical visibility as calculated If detection status is 0 or 6 h1 = ///// h2 (5 characters) = 2nd Height...

  • Page 78: Message 004 (Profile, Sky Condition) - Default Message

    (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...
  • Page 79 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...
  • Page 80 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 = /////...
  • Page 81 (4 characters) = Height of the 5th cloud layer in 10s of meters or 100s 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 operating for 30 minutes. LINE 4 scaleVresVnVenergyVltVti_blVpulseVrateVsum CR LF where scale (5 characters) = Scale parameter,%, 0 to 99999.

  • Page 82: Cl31 Messages

    where ETX = End-of-Text character CRC-16 (4 characters) = CRC-16 Checksum EOT = End-of-Transmission character CR LF = Carriage Return + Line Feed 6.4 CL31 messages 6.4.1 MESSAGES 101 - 106, (CL31 MESSAGE 1) Example message 101 line outputs CL017011 10 01128 ///// ///// 00000000E080 00100 10 0770 100 +40 094 02 0032 L0112HN30 000 036B200CC1002………………..EEFFB3F          (Line output cropped for clarity)

  • Page 83: Message 005 (No Profile, Sky Condition, Mixing Layer Heights)

    LINE 2 S WAVh1Vh2Vh3Vflags CR LF 6.4.2 MESSAGE 005 (no profile, sky condition, mixing layer heights) Available only when a key is entered (see Locked features (p. 60)) LINE 1 SOH CS ID OS N STX CR LF where SOH = Start-of-Heading character CS = Always C ID (1 character) = A single character, 0 to 9, a to z or A to Z, case sensitive.

  • Page 84: Table 6-4: Most Significant Alarm Word For Cs31 Messages

    If detection 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 or 3 h2 = Second cloud base reported If detection status is 4 h2 = Highest signal received If detection status is 0, 1, or 5 h2 = ///// h3 (5 characters) = 3rd Height...

  • Page 85: Table 6-5: Middle Alarm Word For Cs31 Messages

    Table 6-5: Middle alarm word for CS31 messages Description XXXX 8000 XXXX Window contamination XXXX 4000 XXXX Battery voltage low (not applicable to the SkyVUE 8M) XXXX 2000 XXXX Transmitter expires XXXX 1000 XXXX High humidity XXXX 0800 XXXX Reserved for future use...
  • Page 86 Table 6-6: Least significant alarm word for CS31 messages Description XXXX XXXX 0200 Reserved for future use XXXX XXXX 0100 Reserved for future use XXXX XXXX 0080 Units are meters if on, else feet XXXX XXXX 0040 Reserved for future use XXXX XXXX 0020 Polling mode is on XXXX XXXX 0010...

  • Page 87: Messages 107 - 112, Cl31 Message

    NOTE: This line is omitted from message 105. LINE 4 SSSSSSSSSSSSSSSSSSSSSSSSSSSSS..(5 x 770 bytes) CR LF The two-way attenuated normalize backscatter profile; see Backscatter profile reporting (p. 7). CR LF = Carriage Return + Line Feed NOTE: This line is omitted from message 105. LINE 5 ETX CRC-16 EOT CR LF where...
  • Page 88 OS = Operating system, 100 to 999 2 = Always 2 Samples = backscatter resolution and number of samples 1 = MESSAGE 107, 10 m x 770 samples, range 7700 m 2 = MESSAGE 108, 20 m x 385 samples, range 7700 m 3 = MESSAGE 109, 5 m x 1500 samples, range 7500 m 4 = MESSAGE 110, 5 m x 770 samples, range 3850 m 5 = MESSAGE 111, no backscatter profile...
  • Page 89 (3 characters) = Height of the 5th cloud layer in 10 s of meters or 100 s of feet, if no 5th layer is reported h5h5h5 = ///. CR LF = Carriage Return + Line Feed NOTE: Cloud amount and height cannot be reported until the SkyVUE 8M has been operating for 30 minutes. SkyVUE™8M Tactical LIDAR Ceilometer...
  • Page 90 LINE 4 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 transmission, %...

  • Page 91: Ct25K Messages

    6.5 CT25K messages 6.5.1 MESSAGE 113, CT25K Data Message No. 1 Example message line outputs CT02010 20 01333 01523 ///// 00000F00 LINE 1 SOH CT ID 20 10 STX CR LF where SOH = Start-of-Heading character CT = Always CT ID (1 character) = Unit number 0 to 9, A to Z (capitals only) Default ID = 0 20 = Always 20 10 = Always 10...

  • Page 92: Table 6-7: Most Significant Alarm Word For Ct25K Messages

    Reserved for future use 0100 XXXX Reserved for future use 0080 XXXX Window contaminated 0040 XXXX Battery low (not applicable to the SkyVUE 8M) 0020 XXXX Transmitter expire warning 0010 XXXX Heater or humidity sensor failure 0008 XXXX High radiance warning, also XXXX 0004...

  • Page 93: Table 6-8: Second Alarm Word For Ct25K Messages

    Internal heater on XXXX 0100 Units meters if on, 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...

  • Page 94: Message 114, Ct25K Data Message No

    6.5.2 MESSAGE 114, CT25K Data Message No. 6 Example message line outputs CT02060 10 01767 ///// ///// 00000F00 99 /// 0 /// 0 /// 0 /// LINE 1 SOH CT ID 20 60 STX CR LF where SOH = Start-of-Heading character CT = Always CT ID (1 character) = Unit number 0 to 9, A to Z (capitals only) Default ID = 0 20 = always 20...
  • Page 95 h1 (5 characters) = 1st Height If detection status is 1, 2, or 3 h1 = Lowest cloud base reported If detection status is 4 h1 = Vertical visibility as calculated If detection status is 0 or 5 h1 = ///// h2 (5 characters) = 2nd Height If detection status is 2 or 3 h2 = Second cloud base reported If detection status is 4 h2 = Height of highest signal detected...

  • Page 96: Maintenance

    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.

  • Page 97: Diagnostic Led Indicators Within The Enclosure

    CAUTION: If the window requires cleaning, it is very important that only a proper lens cloth or lens tissue is used. The use of inappropriate materials to clean the windows can permanently damage or reduce their effectiveness leading to reduced performance. When the top cover is removed, avoid spraying the fan assembly with liquids.

  • Page 98: Figure 7-1. Diagnostic Led Indicators

    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...

  • Page 99: Appendix A. Measurement Of The Attenuated Backscatter Profile

    Appendix A. Measurement of the attenuated backscatter profile A.1 Initial measurement A.2 Backscatter onset height detection A.3 Produce attenuated backscatter output message A.1 Initial measurement Pulse the laser and measure the backscatter at optimal gains. Derive the impulse response and impulse correct the backscatter signal using the inverse filter derived.

  • Page 100: Produce Attenuated Backscatter Output Message

    A.3 Produce attenuated backscatter output message Range correct the backscatter to produce the attenuated backscatter. Attenuated backscatter (output), calibrated, range corrected but not tilt corrected. Smooth with a 20 m (65.6 ft) width running average. A noise gate can be applied based on a multiple of the 20 m (65.6 ft) detection threshold —...

  • Page 101: Appendix B. Cloud Height Calculation

    Appendix B. Cloud height calculation The scatter profile is inverted (using the Klett inversion technique) and an extinction profile is calculated. Cloud base heights are identified using two criteria as follows (cloud is detected if either of them is met). Criterion 1: likely cloud bases are estimated based on increasing slope of the extinction profile of at least 7 m (22.9 ft) per bin (bin width is 5 m (16.4 ft) and an extinction threshold.

  • Page 102: Appendix C. Sky Condition Algorithm Description

    Appendix C. Sky condition algorithm description The SkyVUE 8M sky condition algorithm follows guidance from ICAO and WMO documents is based on 30 minutes of data. For this reason, sky condition is not available for 30 minutes after power cycling the sensor, a reboot, or changing measurement parameters. The sky condition...
  • Page 103 Where N and N are the sum of hits of each bin and H and H the respective heights. Find the pair with the minimum distance D and combine into one bin with the height of the lowest and number of hits of the combined total. This process is repeated until 5 or less bins remain.

  • Page 104: Appendix D. Replacing The Skyvue 8M Psu

    Appendix D. Replacing the SkyVUE 8M PSU The Power Supply Unit (PSU) can be replaced in the SkyVUE 8M as follows: 1. Disconnect the power to the SkyVUE 8M and open the housing. 2. Disconnect all the plugs from the PSU.
  • Page 105 SkyVUE™8M Tactical LIDAR Ceilometer...

  • Page 106: Appendix E. Skyvue 8M Laser/Apd Module Replacement

    3. Disconnect the cables from the Power Supply 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.
  • Page 107 6. Disconnect the ribbon cable and SMB connector from the module that is being replaced. To avoid damage only pull the gold metal part of the SMB connector. 7. As seen in step 5, the laser module and APD module each have one M5 x 35 mm long socket captive screw with a plain and spring washer securing them.
  • Page 108 See Product Details on the Ordering Information pages at www.campbellsci.com. Other manufacturer's products, that are resold by Campbell Scientific, are warranted only to the limits extended by the original manufacturer.
  • Page 109 Campbell Scientific office serves your country. To obtain a Returned Materials Authorization 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.
  • Page 110 Do not recharge, disassemble, heat above 100 °C (212 °F), solder directly to the cell, incinerate, or expose contents to water. Dispose of spent batteries properly. WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR...
  • Page 111 Campbell Scientific regional offices Australia France Thailand Location: Garbutt, QLD Australia Location: Vincennes, France Location: Bangkok, Thailand Phone: 61.7.4401.7700 Phone: 0033.0.1.56.45.15.20 Phone: 66.2.719.3399 Email: info@campbellsci.com.au Email: info@campbellsci.fr Email: info@campbellsci.asia Website: www.campbellsci.com.au Website: www.campbellsci.fr Website: www.campbellsci.asia Brazil Germany Location: São Paulo, SP Brazil...

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