Related Manuals for Lufft CHM 15k Nimbus
Summary of Contents for Lufft CHM 15k Nimbus
- Page 1 Manual Cloud Height Sensor CHM 15k · a passion for precision · passion pour la précision · pasión por la precisión · passione per la precisione · a p www.lufft.com...
- Page 2 This Manual is protected by copyright. No part of the Manual may be reproduced in any way (by photographing, photocopying, microfilm or any other technique) without the prior written approval of G. Lufft, nor may it be processed, duplicated or disseminated with the help of elec- tronic systems. Any offence against these rules will be prosecuted.
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Page 3: Table Of Contents
Content Basic Information Manual Structuring & Layout Note ........5 Intended Use. - Page 4 Content 8.4.2 Fundamentals ............. 48 8.4.3 File Names.
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Page 5: Basic Information
Basic Information Basic Information This User Manual provides the information that is required to operate the CHM 15k Cloud Height Meter. Manual Structuring & Layout Note The Manual consists of eleven chapters, each page indicating the chapter title in its headline. The bottom line of each page contains the details of the revision state, date of issue and page number. -
Page 7: Safety
Safety Safety Standards & Directives To guarantee the safe operation of laser devices, all binding standards, directives and instructions regarding laser safety and laser radiation protection must be observed by manufacturers and users (refer to Declaration of Conformity). The CHM 15k Cloud Height Meter is built and tested for compliance with the following standards and directives: Council Directive 2004/108/EEC on the approximation of the laws of the Member States relating to... -
Page 8: Requirements On Personnel
Maintenance or adjustment work on the CHM 15k may only be carried by G. Lufft GmbH service personnel or specially trained and authorized techni- cians of the Customer. Anyone who is entrusted with work to install and commission the CHM 15k must have completely read and understood this Manual. -
Page 9: Safety Labelling
Safety have impacted the CHM 15k during installation. Safety Labelling 2.6.1 User Manual Throughout this Manual the following pictograms and signal words are used: DANGER Warns of laser radiation CAUTION Warns of potential damage NOTE Important general note NOTE Important note on environmental protection Revision R09, November 2016... -
Page 10: Chm 15K
Safety 2.6.2 CHM 15k Product labelling is as follows (see Fig. 1): 4 warning labels with safety notes 1 plate with performance data 1 "Beware of Laser Radiation" warning label 1 type plate (rear side) Fig. 1: Labelling Revision R09, November 2016... -
Page 11: Technical Data
Technical Data Technical Data Device versions Order # Connection Special Color 8350.00 Ethernet, RS485 - 10m blue/ white 8350.01 DSL, RS485 - 3m blue/ white 8350.03 DSL prepared single cable for red /white DSL & RS485 8350.08 Ethernet, RS485 - 10m 8k mode red /white 8350.10... - Page 12 Technical Data Energy per pulse 7 -9 μJ Long-time stability over 12 < 10 % months (pulse repetition rate) Pulse-to-pulse variance of < 3 % laser energy FOV Receiver 0.45 mrad Data interfaces Communication interfaces RS485 & LAN Optional: DSL, RS232 or modem V.21, V.22, V.22bis Electrical parameters Nominal voltage 230 VAC, ±10 %...
- Page 13 Technical Data Operating safety Environmental compliance ISO 10109-11 Protection class Internal protection standard IP 65 EN 61326 class B Light source Laser protection class 1M under DIN EN 60825-1 Certification Operating conditions Temperature range -40 °C to +55 °C Rel. air humidity 0 % to 100 % Wind 55 m/s...
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Page 15: Technical Description
Using this data as input, aerosol or cloud layers can be assigned in terms of height and visibility levels can be determined. The CHM 15k Nimbus working is based on a photon counting method. Com- pared to analog measurement techniques, the benefits of this method are very high detection accuracy and sensitiveness which makes it particularly suited for applications using lidar technique. -
Page 16: Functional Units In Inner Casing Space
Technical Description neutral-color float glass. Both vision panels are somewhat inclined in keeping with the Brewster angle. This ensures that laser light will suffer only minimal loss as it passes through and the vision panels remain in an optimal condition due to a self-cleaning effect. -
Page 17: Functional Chart
Technical Description 4.2.1 Functional Chart Laser Trigger board Ref LED [59] Laser controller module APD unit [60] [29] Main controller Heater on LOM Power supply 12 - 15 VDC Surge arrester [54] Temperature sensor ethernet [42] or DSL (opt) [57] Surge arrester serial Battery (opt) Temperature sensor... -
Page 18: Measuring And Monitoring
Technical Description 4.2.2 Measuring and monitoring The process monitoring is organized inside a FPGA unit. It runs independent from the embedded Linux running in a ARM processor. Measurement starts (t0) Measurement stops (1s), temperatures, signal quality, New initialization of APD APD voltage is checked reset if necessary, trans- fer of error codes and... -
Page 19: Transportation & Scope Of Delivery
7/16 BSF or 3/8 Wworth. Instead of M10 screw an imperial 3/8 or 25/64 might be used together with appropriate anchors. Please contact G. Lufft GmbH for further technical details. Operating state at the time of CHM 15k product delivery:... -
Page 21: Installation
Installation Installation CAUTION There is danger of mechanical damage! The owner/operator of the CHM 15k will be responsible for dimensioning and manufacturing a concrete base. This mounting base must be properly sized to withstand the lasting strain that is caused by the equipment's own weight and by external influences. -
Page 22: Installation On The Mounting Base
Installation Drilling template Holes Ø12 mm in case of S12 screw anchor for mechanical attachment in concrete. Possible location of the power box from operator) Opening direction of outer door 6.1.2 Installation on the Mounting Base CAUTION There is danger of accidents during installation work! The weight of the CHM 15k amounts to 70 kg. -
Page 23: Fig. 6: The Chm 15K With Styrofoam Or Paper Honeycomp Packing Pads
Installation Fig. 6: The CHM 15k with styrofoam or paper honeycomp packing pads. Styrofoam packing pads CHM 15k Pallet Cautiously lift the CHM 15k out of the styrofoam packing pads by hand. Comply with all safety regulations as you do this (Position for raising: Fig. Relocation/further transportation options: –... -
Page 24: Fig. 8: Position For Raising And Edge Protection Profile
Installation Fig. 8: Position for raising and edge protection profile Place the CHM 15k in the mounting position (vertical) onto its concrete base. As you do this, pay attention to the outer door position in relation to the local power connection box (see Fig. 4). Use the washers and screws (supplied) to pre-assemble the CHM 15k (see Fig. -
Page 25: Electrical Installation
There is risk of damaging the Cloud Height Meter! Work for connection of the CHM 15k to electric power supply may only be carried out by an electrician of G. Lufft GmbH or another specialist electrician. Failure to comply will void any claims of guarantee or war- ranty. -
Page 26: Fig. 11: Dsl Connection Using The Black Box Dsl Interface
Installation Fig. 11: DSL connection using the Black Box DSL Interface Fig. 12: Principle diagram of electrical installation Revision R09, November 2016... -
Page 27: Starting Up & Shutting Down
Starting Up & Shutting Down Starting Up & Shutting Down Starting Up with serial connection RS485 Preconditions The CHM 15k Cloud Height Meter has been installed in a conforming man- ner. The control cable (RS485), ground cable and power cable (230 V) are con- nected. -
Page 28: Table 3: Essential Commands For Function Testing (Examples)
Starting Up & Shutting Down For testing of communication, use a set<SPACE><RS485No>:Transfermode=0<CR><LF> command. It will switch to polling mode. Working in this mode, you are able to test the following three types of telegram: Standard data telegram Extended data telegram Raw data telegram and make device settings as may be required. -
Page 29: Starting Up With Lan Connection
The service address (1) can not be modified by the user. It is always available and can be used for direct connections between a laptop and the CHM 15k Nimbus. The address (3) can be entered in a web browser window (Fig. 13) to communi- cate with the instrument. -
Page 30: Shutting Down
The user IP-address can be set or queried by the user via RS485 using the param- eter IPS instead of IPD, e.g.: get<SPACE><RS485No>:IPS<CR><LF> For further communication please contact G. Lufft GmbH for assistance. Shutting Down Advanced users should power off the system carefully to avoid any data loss! Users with software superuser privileges should use the web interface: login in as superuser and press “SHUTDOWN SYSTEM”... -
Page 31: Communication Rs485 & Ethernet
Communication RS485 & Ethernet Communication RS485 & Ethernet The CHM 15k Nimbus supports two interfaces RS485 (section 8.2) and Ethernet (section 8.7) to communicate with the instrument. Both have the opportunity to transfer the measured values and to configure the instrument. - Page 32 Communication RS485 & Ethernet short standard Parameter name range / short description value AFDmode* 0; 1, switch on, ftp data transfer Altitude(m) 0 – 9999, unit is always meter! 0 – 3, APD modes, only change if you ApdControlMode* know how to do 0-360 degree x 100 Azimuth (handled as integer)
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Page 33: Table 4: List Of Configurable Device Parameter; *Can Be Set In Service Mode; ²In The Web Interface Only, ³By Terminal Program (Rs485)
Communication RS485 & Ethernet short standard Parameter name range / short description value 0; 1 Reset Reboot of the CHM embedded sys- tem (refer to chapter 8.2.4) 0; 1 Reset to factory defaults, refer to ResetSettings³ chapter 8.2.4, web-interface: set to factory defaults) 0;... -
Page 34: Table 5: Read Only Parameters, Accessible Via Rs485 Interface
Communication RS485 & Ethernet Short Default Parameter Description value APDBreakdown 400000 voltage value for comparison [mV] ApdTempGradient 2400 value for comparison [μV/K] IPDhcp IP address DHCP LAserPower laser power value for comparison # of hours the laser diode is in opera- LifeTime(h) xxxxxxx tion... - Page 35 Communication RS485 & Ethernet DeviceName/ FabName: The product designation (CHM) combined with serial number of a given device, e.g. CHM060001. IgnoreChars: Variable contains 8Bit-ASCII-codes will be ignored by the CHM 15k. The ASCII-codes have to coded as 2 character HEX-code, e.g. “06” corresponds to <ack>.
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Page 36: Instrument Configuration Using Rs 485 Interface
Communication RS485 & Ethernet Instrument Configuration using RS 485 interface The user can change settings via the RS485 interface for: control of the measuring process configuration of the communication interfaces 8.2.1 Reading a parameter To read a parameter, you must trigger a command: get<SPACE><RS485No>:<ParameterName><CR><LF>... -
Page 37: Change In Baud Rate
Communication RS485 & Ethernet set 16:UNT=ft<CR><LF> all range data in a telegram will be indicated in feet (ft) instead of meter (m). Since Unit(m/ft) provides a switching option, <STX>set 16:Unit(m/ft)=ft;2A<CR><LF><EOT> is output for confirmation. 2A is the checksum value of the response telegram. 8.2.3 Change in Baud Rate Changes in the baud rate are a special setting option. -
Page 38: Changing The Logging Time Dt(S), Date & Time
Communication RS485 & Ethernet With a set<SPACE>16:ResetSettings=1<CR><LF> command you can restore all parameters to their factory settings. The command RSN restarts the network. This has to be done whenever the net- work setting has been changed like the IP address, the DHCP mode,... The new settings will be used only after a RSN or a RST command. -
Page 39: Polling Mode
In addition to the characters {S, L, A}, numbers are supported, too. With S=1, L=2, A=3 the first numbers are predefined. The telegram 4 is a system dependent telegram from Lufft. Telegram numbers 5 to 9 can be defined by user. -
Page 40: Standard Data Telegram
Communication RS485 & Ethernet 8.3.3 Standard Data Telegram The standard data telegram consists of 96 Bytes. Data are separated with spaces (20 HEX). Table 8 shows the exact structure of the message format. Byte Description Value <STX> 02 HEX 3, 4 <SPACE>... -
Page 41: Table 8: Standard Data Telegram Format, 1(*) = Any Character
Communication RS485 & Ethernet Byte Description Value Checksum (two's complement of the sum of bytes 0 to 96, 92, 93 excluding bytes 92 and 93,expressed in hex code) <CR> 0D HEX <LF> 0A HEX <EOT> 04 HEX Table 8: Standard data telegram format, (*) = any character A maximum of three cloud heights can be indicated. -
Page 42: Extended Data Telegram
Communication RS485 & Ethernet 8.3.4 Extended Data Telegram The extended data telegram consists of 240 Bytes. Semicolon (3B HEX) replaces space (20 HEX) as delimiter for extended data telegrams. Table 9 shows details about the telegram structure. The telegram size is different if the number of cloud layers “layer”... - Page 43 Communication RS485 & Ethernet Byte Description Value 3B HEX 88,89 Precipitation index/ Sky Condition Index (SCI) 3B HEX 91-98 ******** System status, 32 Bit Service code, so far157-164 3B HEX RS485 identification number of CHM 15k in RS485 bus sys- 100, 101 ** tems, default is 16 3B HEX...
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Page 44: Table 10: Terms In Extended Data Telegram
Communication RS485 & Ethernet Byte Description Value 190-195 ****** Laser operating time (h) 3B HEX 197-199 Status Window 3B HEX 201-205 ***** repetition rate of the laser (PRF) (5 digit) 3B HEX 207-209 Status receiver 3B HEX 211-213 Status light source 3B HEX 215-219 *****... -
Page 45: Raw Data Telegram
Communication RS485 & Ethernet Term Explanatory note Temperature measured at the sensor: Detector temperature displayed in Kelvin x 10; ±2 K unassigned unassigned Laser operating time (h) Laser lifetime hours of operation Degree of contamination of glass panel in percent Optics status 100 = transparent, 0 = opaque Laser pulse number... -
Page 46: Table 12: Raw Data Telegram Format
Communication RS485 & Ethernet Byte Description Value 0-238 Same as in extended data telegram (for 3 cloud layers) <CR> 0D HEX <LF> 0A HEX 241-(eeee-5) Raw data in ASCII format (UUencode) Checksum (two's complement of the sum of bytes 0 to eeee-4 eeee, excluding bytes eeee-4 and eeee-3,expressed in eeee-3... -
Page 47: User Configured Data Telegrams
Communication RS485 & Ethernet The last line with “end” marks the termination of UUencode data. An example of a file name in line 1 YYYYMMDDhhmmss_ [location]_[Device].nc is 20060331123730_Berlin_CHM06003.nc (also refer to chapter 8.4.3). which means: – CHM060003 fabrication number – location = Berlin –... -
Page 48: Netcdf Format Structure
Communication RS485 & Ethernet NetCDF Format Structure 8.4.1 General The Cloud Height Meter saves all measured backscatter profiles in a day file of NetCDF format (Network Common Data File). Its storage capacity allows the files to be kept on record for approximately one month. In a “Communication interrupted”... -
Page 49: Format Structure
Communication RS485 & Ethernet 8.4.4 Format Structure Value saved in NetCDF format can be dimensions, variables and attributes. table 13 to 15 describe the various terms. Dimensions Dimension Description The number of backscatter profiles inside the NetCDF time file The number of bins measured and stored in backs- range catter profiles in NetCDF format with 15m resolution. - Page 50 Communication RS485 & Ethernet Variable Description float azimuth The azimuth angle of the pointing direction units = “degree_clockwise” of the laser on site. long_name = “laser direction of site” float zenith The zenith angle of the pointing direction units = “degree” of the laser on site.
- Page 51 Communication RS485 & Ethernet Variable Description short temp_det (time) long_name = “detector temperature Detector temperature in K*10” [Kelvin x 10] units = “K” scale_factor = 10 short temp_lom (time) Laser optic module temperature long_name = “laser optic module temper- [Kelvin x 10]. ature in K*10“...
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Page 52: Table 15: Global Attributes In Netcdf
Communication RS485 & Ethernet Variable Description schar TCC (time) long_name = “total cloud cover“ total cloud cover unit=“eighths“ short CBH (time, layer) long_name = “cloud base height“ cloud base height unit=“m“ axis=“range“ short CBE (time, layer) long_name = “cloud base uncertainty“ cloud base uncertainty unit=“m“... - Page 53 Communication RS485 & Ethernet Attribute Description text source see devicename (left for historical reasons) text institution Institution or company text software_version Linux kernal, FPGA software, Firmware text comment Descriptive comment text SerLOM Serial number of LOM name/ time of the overlap correction function used to gener- text overlap_file ate the beta variables Table 15: Global attributes in NetCDF...
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Page 54: Service Codes
Communication RS485 & Ethernet Service Codes Table 16 explains the meaning of each bit in a 31-bit service code string. The 31- bit service code string is contained in characters 83 to 90 (91 to 99) of the stand- ard (extended) data telegram and in the raw data telegram as an eight-digit hex- adecimal number (table 9 and 12). -
Page 55: Firmware Update
Communication RS485 & Ethernet Firmware Update The CHM 15k Nimbus system can be updated via Ethernet (WAN/ LAN) connec- tion. Please check the web browser section below for details. A superuser pass- word is needed to perform such an update. -
Page 56: Communication Via Ethernet - Web-Interface
Communication RS485 & Ethernet Communication via Ethernet - Web-Interface The communication with the CHM 15k Nimbus using the Ethernet connection is a fast, secure and system independent way. Inside the instrument runs an Apache web server. It enables a communication and configuration platform via web interface to handle firmware updates, quick views of measuring results or downloading full day NetCDF raw data files. -
Page 57: Fig. 15: Web Interface Netcdf Files (Superuser): Displays A List Of Netcdf Files
Communication RS485 & Ethernet Fig. 15: Web interface NetCDF files (superuser): Displays a list of NetCDF files stored on the internal SD Card. NetCDF files can be downloaded by double–clicking in superuser or service mode. Fig. 16: Web interface/ viewer tab: It shows 24h of present data with 5 min update rate. -
Page 58: Fig. 17: Web Interface Network Configuration Panel (Service Mode). The Static Ip Address
Communication RS485 & Ethernet Fig. 17: Web interface network configuration panel (service mode). The static IP address, netmask and gateway can be changed to local network condi- tions. „RESTART NETWORK“ must be hit to store the settings in the net- work configuration file and to use the new network settings. -
Page 59: Fig. 19: Web Interface, Config System Upper Part In Service Mode: Access On System Configuration Parts
The packages can not be modified by the user. New firmware releases are available from the Lufft web-page. Before updating the firmware consult the readme files and Lufft engineers or advanced service users. -
Page 60: Fig. 20: Web Interface, Tab Config System Lower Part In Service Mode: Access On System Configuration Parts. In Superuser Mode Some Parameters Are
The upper section of process warning tab in figure 22 is mainly used by the Lufft service to identify firmware problems and special errors. -
Page 61: Time Server
Communication RS485 & Ethernet Fig. 22: Web interface: process warnings and error log, AFD status is only visible if AFD mode is on. 8.7.1 Time Server The ntpd daemon is implemented in the Linux system (Figure 17). In the configu- ration file ntpd.conf time servers are listed. - Page 62 Communication RS485 & Ethernet NetCDF files can be merged again to 24 hour files by the user, see section 8.10. Below the configuration file “afdsettings.txt” is listed. The official file name is “dir_config”. More information about the commands listed here can be found on the DWD -AFD web-page.
- Page 63 Communication RS485 & Ethernet Example for the file “afdsetting.txt” Ftp server 192.168.1.51 Subdirectory form root on server: /home/chm_data user name: afd password: eXample [recipient] ftp://afd:eXample@192.168.1.51//home/chm_data/%h/%tY/%tm [options] priority 9 create target dir time */15 * * * * lock DOT age-limit 3600 exec -d bzip2 %s Every 15 minute bzip compressed files are transferred to a directory specified by subdirectory/hostname/year/month.
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Page 64: Telegram Over Ethernet
Telegram over Ethernet The software implementation over the Ethernet interface provides also a method to receive data telegrams. All user data telegrams described in 8.3 can be polled. The port and telegram can be configured in the web-interface, see figure17. On Windows operating systems the Nmap/ Ncat binaries can be downloaded and installed form the server http://nmap.org/ncat/. -
Page 65: Data Evaluation/ Sky Condition Algorithm (Sca)
Data Evaluation/ Sky Condition Algorithm (SCA) Data Evaluation/ Sky Condition Algorithm (SCA) The ceilometer CHM 15k is a laser remote sensing instrument with a build in sky condition algorithm (SCA) generating cloud ceilings, cloud penetration depths/ thickness values. Moreover, the cloud cover (cloud amount in eights) for the total coverage in any altitude and for the base layer is determined and the verti- cal visibility is delivered. -
Page 66: Backscatter Data
Data Evaluation/ Sky Condition Algorithm (SCA) normalized backscatter signal. It is stored in the variable beta_raw in the NetCDF files. In another step, normalized data are calibrated to get attenuated backscatter values which are stored in the NetCDF files in firmware releases 0.8xx and 0.9xx. -
Page 67: Cloud Ceilings/ Cloud Base Heights
Data Evaluation/ Sky Condition Algorithm (SCA) Cloud ceilings/ cloud base heights After successful pre-processing the averaged backscatter profile is used to iden- tify cloud echoes, rain, fog, aerosol layers and discriminate these events from each other. Figure 25 shows a daily color coded intensity plot, where all layers with a signifi- cant backscatter value, marked black. -
Page 68: Parameters For Data Evaluation
Data Evaluation/ Sky Condition Algorithm (SCA) Parameters for data evaluation A set of parameters controls the data evaluation routine. The system dependent values are stored on the laser optical unit. User accessible data are listed within the table 4 and table 5. Additional parameters are listed in table 26. signal (Pr ) threshold threshold −... -
Page 69: Vertical Optical Range (Vor)
Data Evaluation/ Sky Condition Algorithm (SCA) Vertical optical range (VOR) The method for calculating VOR (vertical optical range or vertical visibility) is described in the standard ISO 28902-1:2012. Step by step procedure how we use it: First, all sections in the backscatter signal (see section 9.2) with a signal / noise ratio >5 are determined. -
Page 70: Cloud Amount/ Cloud Cover (Bcc / Tcc)
Data Evaluation/ Sky Condition Algorithm (SCA) Q-Index description layer can be detected, but with a high uncertainty and low accuracy layer can be detected with a high accuracy (less than 50 m) Table 18: Quality Index description, of the aerosol layer height 9.11 Cloud amount/ cloud cover (BCC / TCC) The cloud coverage value is calculated from the cloud bases and their time... -
Page 71: Sky Condition Index (Sci)
Data Evaluation/ Sky Condition Algorithm (SCA) 9.12 Sky condition index (SCI) The sky condition index is written in the extended data telegram and in the NetCDF files. It should allow the user to interpret data in cases when clouds are not detected. -
Page 72: Fig. 27: Cloud Amount Algorithm: The Selected Time Interval Used For The Cloud Cover Calculation Depends On The Range, A Truncated Cone Function Is Used For The
Fig. 27: Cloud amount algorithm: The selected time interval used for the cloud cover calculation depends on the range, a truncated cone function is used for the calculation. -
Page 73: Cleaning, Maintenance & Service Instructions
Cleaning, Maintenance & Service Instructions Cleaning, Maintenance & Service Instructions DANGER Laser radiation! There is danger of eye injury! Class 1M laser radiation, if viewed over an extended period of time, may cause damage to the eyes such as glare or irritation or even full loss of eyesight. -
Page 74: Fig. 28: Glass Panels Have To Be Cleaned. In The Lower Right Corner Of The Receiver Window
The CHM 15k Cloud Height Meter requires regular maintenance. Mainte- nance work may not be performed by anyone other than service person- nel of G. Lufft GmbH or specially trained customer technicians. For detailed instructions on maintenance, you should consult the Service Manual. -
Page 75: Maintenance Intervals & Action
Cleaning, Maintenance & Service Instructions 10.2 Maintenance Intervals & Action CAUTION Danger of physical injury by electric current! Use miniature circuit breaker to cut power supply before any kind of maintenance or repair work at the Cloud Height Meter. Interval Preventive maintenance action Comment regular... -
Page 76: Fig. 30: Air Dehumidifier Bag (2) And Rubber Seal (1)
For other detailed information, which is in excess of this User Manual (maintenance, replacement and system assembly particulars), you should refer to the Service Manual. The Service Manual is only available to Lufft personnel or specially trained technicians who have a documented proof of qualification (valid certificate) to handle respective maintenance and service work responsibilities. -
Page 77: Dataclient - Terminal Software For Chm 15K
(used by the old software JO-Visual only to save images) local temporary file path to save raw data. The user needs read and write access to the Lufft program and data folder and the “temp” folder. Because the measure and image paths are not fixed, be sure that the configuration file JO-Visual.ini for the old visualisation program and the... -
Page 78: Start Dialog
DataClient - Terminal software for CHM 15k Please notice that the standard telegram does not contain the information of the instrument name of the instrument. Without additional queries the name is set to “CHMstndrd”. The instrument name can be set by querying for the device- name (old fabname) or for all parameter in the start sequence form field or within the autostart process. -
Page 79: Communication Tab
DataClient - Terminal software for CHM 15k The four input fields on the left side should be filled with appropriate values. If the current baud rate of the connected CHM 15k is unknown, then use the value “9600, which is the default baud rate. A higher baud rate, eg. 38400, is recom- mended for raw data transfer and could be changed later on, see top figure 32. - Page 80 DataClient - Terminal software for CHM 15k CHM 15k can be read unfiltered in the display box „CHM 15k answer“. The raw data part of raw data telegrams is not displayed here. In addition, they are shown in the service tab field. Details of control elements.
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Page 81: Raw Data
DataClient - Terminal software for CHM 15k ble range, the successful parameter update will be acknowledged in the box “CHM 15k answer”. If one of these restrictions is violated, there is no acknowledgement and the parameter is not changed. For safety reasons some of the parameters are alterable only in the service mode, see user guide, section 8.1. -
Page 82: Telegram & Cloud Layer
DataClient - Terminal software for CHM 15k Fig. 33: Raw data tab. In the graph shown here the data of the last transmitted raw data telegrams are captured. In fact, a simple moving average (SMA) filter is applied on the last 10 raw data telegrams, this number 10 is changeable in the input field “maximum number of data for SMA”. -
Page 83: Service Code
DataClient - Terminal software for CHM 15k In the above example we don’t see recognized cloud layer, hence the field for cloud layer is marked with NODET or NODT, short form for "not detected". The vertical visibility is also not detectable and the detection range is very high. Two aesorol layers are identified. -
Page 84: Service & Software Update
Windows operating system. The standard file includes all command line options, which can be changed due to user require- ments: set CHMDIR=%systemdrive%\Lufft\Programs set MPATH=%systemdrive%\Lufft\Measure Revision R09, November 2016... - Page 85 DataClient - Terminal software for CHM 15k start /B %CHMDIR%\DataClient.exe -device 16 -com COM1 -baud 3 -ncpath %TEMP%\uudecode.nc -measurepath %MPATH% -startseq 7 -utcupdaterate 6 - instrument 1 -filestructure 0 -nostartdialog 1 Remark: start... command without linebreaks!) It is important that the current internal baud rate of the CHM 15k (set in previ- ous sessions) must coincide with the baud rate in this command line, in this example value 3 means 9600 baud.
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Page 86: 11.11 Dataclient Software Versions
DataClient - Terminal software for CHM 15k –nostartdialog <number> The value „1“ skips completely the start dialogue, “0“ just affects the input fields of the start dialog (Fig. 31). 11.11 DataClient Software Versions Software # Description Published 2.35 Latest 2.x release of DataClient based on Labview 7, Dec, 2010 which was limited to Windows 2000, XP 3.36... -
Page 87: Annex
Annex - Service Manual Contents Annex Annex - Service Manual Contents Basic Information Safety Technical Data Functional Description & Setup Malfunction & Trouble Shooting Maintenance Replacement & Wear/Tear Parts Revision R09, November 2016... -
Page 88: Table 25: Example Of The Parameter List Received Via Rs485 Interface Using The Command: "Get 16:Parameter
BlowerMode: CHMTest: DateTime: ”10.04.2012 13:55:25” DeviceName: DeviceType. CHM15k dt(s): FabName: CHM090104 Gateway: 10.64.102.1 IgnoreChars: Institution: Lufft IPdhcp: 10.64.102.36 IPAddress: 10.64.102.136 Table 25: Example of the parameter list received via RS485 interface using the command: “get 16:parameter”. Revision R09, November 2016... - Page 89 Annex - Example for querying a complete parameter list Parameter Value LaserPower: Latitude: 52.000000 Layer: Lifetime(h): 16355 Location: Teltow Longitude: 13.238620 MaxCrossTalkChars: Netmask: 255.255.255.0 NtpMode: NtpServer: 10.250.1.1 PowerSaveMode: ServiceMode: SerLom: TUB080022 SetPeltier: Standby: SystemLifetime(h): 4763 TBCalibration: 0.206800 TimeOutRS485(s): TimeZoneOffsetHours: TransferMode: TransferModeAfterError: UApd: Unit(m/ft):...
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Page 90: Table 26: Chm Setting File Downloaded From Web-Interface
Annex - Example for querying a complete parameter list Using the web- Interface the query command “download current settings” will download the complete set of parameters. Example: Parameter Value Description ** Standard User Configuration Parameters ** DeviceName CHM090104 CHMyyxxxx dt(s) 2 - 3600 s, logging and reporting intervall MeasureInterval 1000... - Page 91 Annex - Example for querying a complete parameter list Parameter Value Description ** ALG ** NumberOfLayers 1-5, number of cloud layers in Netcdf und telegram AlhAverageTimw 15-1800 (s), time average for ALH calculation AlhAverageHeight 15-1000 (m), distance average used for ALH calc 1-15000 (m), distance of min ALH height, detecta- AlhMinHeight ble by CHM...
- Page 92 ApdTempGradient 2400 temperature gradient in mV/K ** Settings not in default Config ** SlaveIP 0.0.0.0 not used for CHM 15k Nimbus ** Information to current versions and life times ** Firmware 0.723 data processing version FPGA 02.13 FPGA version 13.12.1...
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Page 93: Table 27: Linux/ Fpga Releases For Cpu Board 550
Annex - CHM 15k Firmware Version This manual corresponds to the firmware version 0.743 from July 2016 for the CHM 15k Nimbus. Future changes will be notified here. Linux Kernel software: 12.12.1 for the CPU board 550 and 16.05.1 (15.12.1) for the new CPU board 552, which had replaced the original hardware in Aug. - Page 94 - NetCDF bugfix to avoid problems in ctrl process 0.723 03/2014 - support for new processor board (2015) 0.724 - - test releases: implementation of 10 m resolution in NetCDF files, 08-11/ 0.726 Lufft design, ... 2014 Table 29: Firmware Releases Revision R09, November 2016...
- Page 95 Annex - CHM 15k Firmware Version Firmware published Description Published releases - updated cloud algorithm during precipitation events - telegram over Ethernet support, now using port 11000 - aerosol layer detection less sensitive in lower range to avoid artefacts - range parameter in webinterface and command interface imple- mented (RAR, RAS, RAE,RHD) - cloud detection is using new flexible range resolution to enable pre- 0.730...
- Page 96 Annex - CHM 15k Firmware Version Firmware published Description Published releases 1) Aerosol Layer Height (ALH) algorithm was further improved (for ALH values at low SNR). 2) A table with current measurements (cbh, cpd, alh, tcc) are dis- played in the viewer tab of the web interface (display is limited to 5 layers).
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Page 97: List Of Illustrations
Connection data cable RS485 (4 wire). Designations RDA(-), RDB(+) are used in different ways by RS485 interface suppliers. Lufft is using the notation from B&B in this manual........25 Fig. - Page 98 Illustrations Fig. 22: Web interface: process warnings and error log, AFD status is only visible if AFD mode is on..........61 Fig.
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Page 99: List Of Tables
Tables List of Tables Table 1: Device versions ........... . 11 Table 2: Technical data . -
Page 100: Declaration Of Conformity
Declaration of Conformity Revision R09, November 2016... - Page 101 G. LUFFT Mess- und Regeltechnik GmbH Lufft Germany: Fellbach Office: Postal Address: Gutenbergstrasse 20 D-70736 Fellbach Address: P.O. Box 4252 70719 Fellbach Germany Phone: +49 (0)711 51822 - 0 Fax: +49 (0)711 51822 - 41 www.lufft.com info@lufft.de Berlin Office: Carl-Scheele-Strasse 16...
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