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LRF 7047- Integrator Manual

914929_TML_LRF7047_en_Version B

Public: 04.2019

Confidential & Proprietary

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Page: 10/72

1.1 Main parts of the LRF Module

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A receiver, containing electronics and a receiver diode.

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A transmitter, containing a double stage fiber laser and an 830 nm pointer.

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A mainboard which manages all electronic elements and calculates the results.

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Stable aluminum bench including optics.

Figure 1: LRF 7047 main parts (front view)

Figure 2: LRF 7047 main parts (rear view)

Summary of Contents for LRF 7047

Page 2: ... active the LRF7047 laser range finder emission is eye safe According to EN 60825 and its amendments WARNING Laser Pointer The LRF7047 Article Number 913906 is a Class 3B Laser product because it contains a Class 3B laser pointer INVISIBLE LASER RADIATION AVOID EXPOSURE TO BEAM CLASS 3B LASER PRODUCT Wavelength 830 nm Beam divergence 0 45 mrad Maximum Power 180 mW NOHD Nominal Ocular Hazard Distan...

Page 3: ...or of the host system NOTICE Be careful with ESD The LRF module is an electrostatic discharge sensitive device Do not touch any electronics or components unless protective measures are in place WARNING Do not use the LRF module outside the specified usage limits temperature during operation etc See also technical data sheet with article number 915134 Version A Power the LRF module only within the ...

Page 4: ...misappropriation Use of an LRF module with obvious damage or defects WARNING Inappropriate use may bring the risk of Misinterpretation of results Eye injuries Instrument errors Damage to property Malfunction NOTICE Avoiding storage and transport damage When not in use always keep the LRF module packed in a clean and dry 20 60 RH condition Remove power prior to prolonged storage Observe the permiss...

Page 5: ...r be made available or passed on to any third party who has not been expressly authorized by Safran Vectronix AG Relevant information for the end user is allowed to be copied into the user instructions of the host system Warranty Safran Vectronix AG provides this publication as is without warranty of any kind either express or implied including but not limited to the implied warranties of merchant...

Page 6: ...on 21 4 1 Handling 21 4 2 Design recommendations 21 4 3 Preparation 21 4 4 Mounting 22 4 4 1 Mounting the LRF module with detached Laserbox 23 4 5 Boresighting 24 4 5 1 Boresighting at 1550 nm 24 4 5 2 Boresighting at 830 nm 25 4 5 3 Back up solution 25 4 6 Nitrogen flushing 26 4 7 Front Protection 27 4 8 Eye Safety 29 4 8 1 Eye Safety Kit 30 4 9 Deflection area of Double Stage Fiber Laser 30 5 HW...

Page 7: ... 50 6 6 Servicing commands 51 6 6 1 Set LRF module baud rate LM Br x CS CR 51 6 6 2 Version software and module type request LM Iv CS CR 52 6 6 3 Set range gate min LM Gl x CS CR 53 6 6 4 Set range gate max LM Gh x CS CR 54 6 6 5 Get current range gate settings LM Ig x CS CR 55 6 6 6 Reset LRF module to default settings LM Rd CS CR 56 6 6 7 Timestamp activation LM At x CS CR 57 6 6 8 Get time stam...

Page 8: ...s chapters Safety Notice 4 8 5 2 5 2 2 6 4 6 5 2 Minor amendments Warning Label amended NSHD and NOHD values amended Warning Label amended NSHD and NOHD values amended Power supply values graphs updated Timing Data added and amended Timestamp information added 8 8 18 GADO B Safety notice 9 1 9 5 5 1 5 8 6 1 6 7 SW Rephrased Reference designs HW Rephrase information specification SW Operating mode ...

Page 9: ...ed at integrators To understand these instructions expert knowledge and skills are required For the safe use all users must strictly obey these operating instructions Means of presentation To accentuate the safety consideration and to clarify the technical correctness of the operating work important information and technical instructions are given particularly emphasized WARNING Indicates a hazard...

Page 10: ...1 Main parts of the LRF Module A receiver containing electronics and a receiver diode A transmitter containing a double stage fiber laser and an 830 nm pointer A mainboard which manages all electronic elements and calculates the results Stable aluminum bench including optics Figure 1 LRF 7047 main parts front view Figure 2 LRF 7047 main parts rear view ...

Page 11: ...hit the target The main part of the laser light is absorbed or diffusely reflected by the target and only very small percentage of the light is reflected back to the LRF module This remaining laser light is received by the opposite objective lens and focused on the receiver diode The receiver diode detector starts sampling the echo at a very high frequency Figure 3 below indicates how laser pulses...

Page 12: ...A typical target size for range performance comparison is the NATO target with a similar size to the front of a tank The size of a NATO target is 2 3x2 3 m Additionally the LRF performance is defined on a man size target with a size of 1x1 m Small targets reflect only a part of the laser beam and therefore only allow lower range performance A large target allows longer ranges because more of the l...

Page 13: ...s Kinetic tremor If the host system with an integrated LRF module is firmly installed or mounted e g on a Tripod longer distances can be measured more easily If the LRF module is shaking during a measurement it can lead to wrong or no measurement results This is due to the fact that only a few pulses hit the target during the measurement The example below shows a laser beam with 0 5 mrad divergenc...

Page 14: ...k cleanliness of the module and carefully remove any particles WARNING Be careful with the fiber The optical fiber of the LRF module is very sensitive to harsh bending especially in proximity to the pigtail The minimum bending radius of the fiber is 5 mm Figure 7 Pigtail of LRF 7047 NOTICE Be careful with ESD The LRF module is sensitive to electrostatic discharge Do not touch any electronics or co...

Page 15: ...k pole pin plugs The pointer interlock switch is protected by the red cap To arm the pointer lift the red protective cover and flick switch on see figure 10 and figure 11 Figure 8 USB to LRF Interface cable for use of LRF 7047 with a PC Figure 9 Location of Samtec System Connector Figure 10 Pointer interlock open Figure 11 Pointer Interlock closed Non eyesafe Non eyesafe Pointer cannot be used poi...

Page 16: ...Interface Kit Article No 914752 Please follow the steps below to install the LRF Terminal Software 1 Connect the USB Stick to your PC 2 Open the setup exe file on the USB Stick 3 Select your installation language English selected as an example 4 At the welcome screen click Next to continue 5 Choose the folder in which to install the software either accepting the default option or browsing for a fo...

Page 17: ...ion B Public 04 2019 Confidential Proprietary Safran Vectronix AG All rights reserved Page 17 72 7 Read and either accept or decline the terms of use If declined the program will abort 8 If the terms of use are accepted the demonstration program will load ...

Page 18: ...e that the Terminal Software is installed on your PC and the LRF module is connected correctly to your PC see 3 2 and 3 3 The below mentioned guide shows how to use the Terminal Software 1 Select the module you are using from the drop down list 2 Select the settings tab and select Interface 3 Either set the settings manually and press OK or select Search for LRF Module Please note values above are...

Page 19: ... OK and the correct interface values are saved If it is not found try once more If the module is still not found enter the interface values manually 6 Press OK to return to the main screen Please note values above are for illustration only may differ to your modules requirements 7 Press Connect The button will change colour Use the commands as required Note that the commands change depending on th...

Page 20: ...n Power supply must not exceed the operational range see chapter 5 3 Operating conditions The common Interface settings present in most commercial applications are listed below Some of them may not be necessarily present o Communication type Serial o Encoding transmit and receive ASCII UTF 8 o Speed 57 600 baud rate o Transmit delay inter character 0 msec o Transmit delay inter line 0 msec o Data ...

Page 21: ... module shall be mounted inside an electrical shielded housing EMC disturbance can cause incorrect or no measurement NOTICE Be careful with the optics scratches and fingerprints on the optics will reduce range performance The front lens is not sealed and therefore the LRF is not gas or water tight Remove the yellow stickers on bench holes only before flushing the air out of the system so that nitr...

Page 22: ...h a tolerance of 1 5 mrad The host system shall provide the ability to align the module to the main optical axis of the host system with 1 5 mrad NOTICE The contact surface of the host system has to be conductive to provide system ground Prevent damage to the LRF Module by avoiding short circuits and ground loops NOTICE Mechanical stress due to tolerance and thermal expansion coefficient mismatche...

Page 23: ...ll Warning The bending radius of the fiber should not be less than 5mm Do not kink the fiber Do not pull the fiber connectors 5 After the fiber has been unrolled reattach the Fiber protective cover and tighten the screws to 30 Ncm 6 Unscrew the four Laserbox mounting screws C using a T10 screwdriver and remove the screws 7 Carefully lift the Laserbox 8 Remove the washers from the 4 rubber spacers ...

Page 24: ... removed 4 5 Boresighting The module receiver and transmitter are boresighted in the factory For this reason the module can be mounted and replaced easily LRF 7047 offers two wavelengths for boresighting 4 5 1 Boresighting at 1550 nm For a professional boresighting of the LRF module with the main optical axis of the host system we recommend the use of a collimator and a camera sensitive to the 1 5...

Page 25: ...ical components optical filters optical filter glass index html If such equipment is not available the 830 nm pointer can also be made visible by using a Night Vision device By using a boresight chart at a defined distance the LRF can be aligned by bringing the main optical axis of the host system and the LRF to the predefined positions on the boresight chart 4 5 3 Back up solution If no other opt...

Page 26: ...l bench holding the optics which are covered by small pieces of yellow tape The pieces of tape are intended to avoid dust penetrating the optical system and should be removed just before the host system is sealed and purged With respect to dust the unit is recommended to be handled observing standard practices for sensitive optical components and assembly procedures Figure 16 Positions of the vent...

Page 27: ... nm light angle 0 15 for both lenses If this is not fulfilled you have an optical mirror However it is the decision of the system integrator to specify transmission for visible light of the front windows laser light R 0 5 for λ 1 500 1 600 nm light angle 0 15 for both lenses If this is not fulfilled the laser energy is reduced and internally reflected This can cause optical cross talk and lead to ...

Page 28: ...ngle of 5 10 on the front window respect to the LRF Doing so prevents sunlight reflections from the front window to be seen by others NOTICE The tilt angle influences LRF range performance being 0 angle the optimal value NOTICE The tilt angle prevents the pointer from creating ghost images Fiber Laser Output Objective lense Parallel laser beam Integrator Unit Windows Antireflective protection opti...

Page 29: ...unaided human eye λ 830 nm The LRF range capabilities at 1550 nm are eye safe Protective measures such as wearing appropriate laser safety glasses for 790 to 850 nm have to be taken to avoid direct exposure to the pointer laser beam Integration personnel must be trained how to handle non eye safe lasers Implementation of laser safety measures is the system integrator s responsibility The LRF 7047 ...

Page 30: ... a T6 screwdriver attach the protective filter with two screws at position A 2 Remove protective cover screw B with a T6 screwdriver 3 Carefully place the large red protective plate over the fiber laser without damaging the fiber 4 Secure the protective plate with the T6 screw from the Eye Safety Kit using the screw hole at position B Figure 19 LRF 7047 with eye safety filter red 4 9 Deflection ar...

Page 31: ...tem connector The system connector is of the following type Manufacturer Part number Pin count Samtec LSHM 120 01 L DH A S K TR 40 Samtec LSHM connector series are not gender specific and so one can mate the same type of connectors Depending on the mating combination the pin mapping varies Details on the system connector and its counterpart can be found in chapter 9 1 System connector reference de...

Page 32: ...34 36 38 Interlock pins These pins shall be used to avoid unintended activation of the non eyesafe pointer Interlock pins have to be short circuited to each other to enable pointer activation with the corresponding SW command See chapter 6 5 4 If these pins are not connected the pointer cannot be activated 10 11 12 13 14 20 22 24 25 26 27 28 31 33 35 37 SPARE Do not connect 1 GND 2 GND 3 PWR_IN 4 ...

Page 33: ...lectrostatic fields Unused devices must be stored in conductive foam or shunts Personnel should be properly grounded prior to handling this device The protective foam should be discharged to the destination socket before devices are removed Parameter Typical Note All Signals 2kV 1kV Human body model HBM Charged device model CDM 5 4 Operating Conditions Parameter Min Typical Max Unit Operating Volt...

Page 34: ...WR_IN 12 V over all temperature range Parameter conditions Min Typical Max Unit Power consumption OFF with PWR_SAFE Typical 5 20 mW Power consumption Standby Typical 100 150 mW Power consumption normal operating Typical 450 500 mW Power consumption during a range measurement Typical 7 5 8 W Inrush current at start up Typical 4 A Inrush current during a range measurement Typical 4 A Power consumpti...

Page 35: ...response of the sensor if powered under typical conditions 12 V T 25 C Laboratory power source Figure 22 Typical current peak when powering up current peak depends on power supply capability 5 5 2 Current Consumption detail Measurement Sequence Typical response of the sensor if powered under typical conditions 12 V T 25 C Laboratory power source Figure 23 Typical current peak during measuring sequ...

Page 36: ...n 19 RS422 TX N pin 21 RS422 RX P and pin 23 RS422 RX N with the following parameters Parameter Value Baud rate 57600 Bd Data bits 8 Start bit s 1 Parity Even Stop bit s 1 Signaling levels RS422 Levels Please see chapter 5 2 Pin descriptions for RS232 422 Interface selection with pin 18 5 7 Pointer Interface Interlock 1 to 4 To enable the non eyesafe pointer connect Interlock 1 2 3 and 4 together ...

Page 37: ...on the PWR_SAFE pin 9 the module will turn onto the OFF Mode and will reach the lowest power consumption When the PWR_SAFE pin 9 is set to GND or left floating the module goes into Normal operating Mode Figure 24 PWR_SAFE signal and operating mode selection There is a second way to bring the device into Normal operating mode When the device is in OFF Mode it can set to Normal operating mode when i...

Page 38: ... transferred to the module via the serial interface After a valid command format checksum and parameters valid has been received the LRF module sends an acknowledge message to the host and executes the command If the received command is successfully executed the LRF module sends back a response message if necessary followed by the success prompt character to the host In case that the command execu...

Page 39: ... 46 0D Prompt SOM Start of Message The character ASCII 0x3E acts as Start of Message The SOM is used for message frame synchronization Product ID The product ID for LRF modules is LM ASCII 0x4C followed by 0x4D Message ID The message ID represents a command Mnemonic It is composed of an upper case letter followed by a lower case letter example Md Parameters if required can be of different types o ...

Page 40: ...h host to LRF module 10 Maximum message length host to LRF module 16 Acknowledge Acknowledge is sent by the LRF module to indicate that the message is valid and being processed Acknowledge is sent with checksum AC CS CR AC 84 r Not Acknowledge Not Acknowledge is sent by the LRF module to indicate that the message has been received but is not valid and has not been processed The Not Acknowledge ans...

Page 41: ...um of 300 ms first byte Wake up delay o Stand by Mode to Normal operating Mode delay is lower than 75 ms o OFF Mode to Normal operating Mode delay is lower than 75 ms Start up delay o from Disconnected to Normal operating Mode and o from Disconnected to OFF Mode and then to Normal operating ode delay is lower than 75 ms The maximal duration of a IBIT test is lower than 150 ms The maximal duration ...

Page 42: ...Error codes Range request command and response Command Inputs Description LM Md x CS CR LM Md 3 D5 0D Range request with parameter x targets Example with x 3 targets Response Outputs Description LM Md range1 range2 range3 CS CR LM Md v0006091 v0108750 R000E301 46 0D Response of LRF with parameter x 3 Example Parameters 1st char 2nd to 8th char Description Range1 Range2 Range3 v v R 0006091 0108750...

Page 43: ...ned Fake range request command and response Command Inputs Description LM Mf 5 CS CR LM Mf 3 D7 0D Fake range request of x targets Example with x 3 targets Response Outputs Description LM Mf range1 range2 range3 CS CR LM Mf v0123400 v0432100 R000E301 57 0D Response of LRF with parameter x 3 Example Table 4 Fake range request command Example of a successful Fake Range Request command transaction Ho...

Page 44: ...ye safe and presents no risks for SWIR cameras Laser continuous low power mode Command Inputs Description LM Tl x CS CR LM Tl 1 E2 0D LM Tl 0 E1 0D Low power continuous laser emission with parameter x power level Example with x 1 lowest emitting power Example to switch off Response Outputs Description No response expected Table 5 Laser continuous low power mode command Example of a laser continuou...

Page 45: ...d with the mechanical interface of the module The module provides this functionality for alignment pointer and maintenance purposes no range is measured Laser pointer command and response Command Inputs Description LM Rp x CS CR LM Rp 1 E4 0D LM Rp 0 E3 0D Laser pointer request with parameter x Example to switch ON Example to switch OFF Response Outputs Description No response expected Table 6 Las...

Page 46: ...arm Response Outputs Description No response expected Table 7 Laser pointer arm command Examples of a laser pointer command transaction Host LRF Module Hardware Interlock pins are short circuited to each other Host LRF Module Command frame LM Lp 1 DE 0D LRF Module Host Acknowledge frame AC 84 0D Prompt Host LRF Module Command frame LM Rp 1 E4 0D LRF Module Host Acknowledge frame AC 84 0D Prompt WA...

Page 47: ...From Stand by Mode to Normal operating Mode LM Op 2 E2 0D Transitions allowed with the use of PWR_SAFE signal Hardware pin 9 From Normal operating Mode to OFF Mode LM Op 0 E0 0D From Normal operating Mode to Stand by Mode LM Op 1 E1 0D From Stand by Mode to Normal operating Mode LM Op 2 E2 0D From OFF Mode to Normal operating Mode any single character to the module Operating mode selection command...

Page 48: ...onse Command Inputs Description LM Mb x CS CR LM Mb 2 D2 0D Block range request with parameter x ranges Example with x 2 ranges Response Outputs Description LM Mb range1 range2 range3 CS CR LM Mb range1 range2 range3 CS CR LM Mb v0004280 R000E301 R000E301 42 0D LM Mb v0004276 R000E301 R000E301 47 0D Response of LRF with parameter x 2 Example with parameter x 2 Table 9 Block range request command E...

Page 49: ...ge request with parameter x repetition rate Example with x 4 repetition rate of 10Hz Response Outputs Description LM Mt range1 range2 range3 timestamp CS CR Every 0 1 seconds LM Mt v0004252 R000E301 R000E301 53 0D Response of LRF module to the host with parameter x Example with x 4 repetition rate of 10 Hz Table 10 10 Hz continuous range request command Example of a successful 10 Hz continuous ran...

Page 50: ... 72 6 5 9 Error Codes All range related commands provide an error message handler These are listed below Data Output Error codes Outputs Description R000E301 No target detected R000E302 Target detected inside Range Gate T0505950 T Module LRF is operating outside of the temperature specification The accuracy is not guaranteed Table 11 Error Codes ...

Page 51: ... 4 Set baud rate to 115200 The LRF module will automatically restart to apply the new baud rate LRF baud rate command and response Command Inputs Description LM Br x CS CR LM Br 4 D9 0D LRF module s baud rate with parameter x Example with x 4 baud rate to 115200 Response Outputs Description No response expected Table 12 Set LRF baud rate command NOTICE Please note that the LRF restarts after chang...

Page 52: ...LRF module Example Parameters Value Description prod Type LRF 7047 Type of product ucfw MCU Firmw 01 00 00 B6 Date Jul 20 2017 Version and date of the microcontroller firmware ucboot MCU Booter 01 00 Version of the microcontroller s boot loader dspfw DSP Firmw 00 01 Date Jun 14 2017 Version and date of the DSP FPGA firmware hw Hardware 01 01 00 00 31 Version of Hardware opt Options PF Each option ...

Page 53: ...mum range gate Example Output with normal range Range gate Output with applied range gate v0018750 v0047380 v0163420 1st 187 50 m 2nd 473 80 m 3rd 1634 20 m 200 m R000E302 v0047380 v0163420 1st target Outside range gate 2nd target 473 80 m 3rd target 1634 20 m v0018750 v0047380 v0163420 1st 187 50 m 2nd 473 80 m 3rd 1634 20 m 550 m R000E302 R000E302 v0163420 1st target Outside range gate 2nd targe...

Page 54: ...mmunication Host LRF Module Command frame LM Gh 5000 65 0D LRF Module Host Acknowledge frame AC 84 0D Prompt Single range request output in case of a maximum range gate Example Output with normal range Range gate Output with applied range gate v0018750 v0047380 v0163420 1st 187 50 m 2nd 473 80 m 3rd 1634 20 m 200 m v0018750 R000E302 R000E302 1st target 187 50 m 2nd target Outside range gate 3rd ta...

Page 55: ...e gate settings Get current range gate settings command and response Command Inputs Description LM Ig x CS CR LM Ig 1 D2 0D Get current range gate settings Example with x 1 get minimum gate range Response Outputs Description LM Ig g CS CR LM Ig 00000 91 0D Response of the LRF module with parameter x 1 Example with range gate g being zero Table 18 Get current range gate settings command Example of ...

Page 56: ...is performed during the process Default parameters are Baud rate 57600 Range gate max 30000 Range gate min 00000 Timestamp deactivated Reset LRF module settings command and response Command Inputs Description LM Rd CS CR LM Rd 7B 0D Reset LRF module to default settings Example Response Outputs Description No response expected Table 19 Reset LRF module settings command Example of a reset LRF module...

Page 57: ...two timestamps values of the beginning and the end of the measurement relevant pulses The setting of the timestamp activation is not permanently stored thus the timestamp will be automatically deactivated on LRF start up The timestamp is a 32 bit counter value The maximum value of the timestamp is 429496730 µs After reaching its maximum the timestamp counter wraps around and starts counting up fro...

Page 58: ...rrent time stamp value Example Parameters 8th to 17th char Description ts t743721867 Timestamp of 743721867 microseconds Table 21 Get timestamp command Figure 28 plots the communication channels between a host and the module The full length of the command is 14 milliseconds The offset at which the time is taken from the internal counter is marked in green on the image which is 1 0 0 7 milliseconds...

Page 59: ... 1 timestamp middle of the measurement relevant pulse LM Mt range1 range2 range3 range4 range5 timestamp1 timestamp2 CS CR Timestamp activation parameter 2 timestamp1 beginning of the measurement relevant pulse timestamp2 end of the measurement relevant pulse Table 22 Range Command with activated timestamp This is valid for timestamp relevant behaviour Other functionality for ranges number of targ...

Page 60: ...testresult CS CR LM Tb IBIT T 29 75 FF 37 0D Response of LRF module to the IBIT request Example Parameters Description name temp testresult IBIT T 29 75 FF Name Temperature of the electronics in C Test result expressed in hexadecimal testresult 11111111 FF Test result converted to binary 1 good 0 error Bit 7 3 3 V power supply Bit 6 5 V VBAT power supply Bit 5 Power supply receiver board Bit 4 μCo...

Page 61: ... test2 PBIT FF FF Name Test result expressed in hexadecimal Test result expressed in hexadecimal testresult1 11111111 FF Test result1 converted to binary 1 good 0 error Bit 7 3 3 V power supply for dual power supply only Bit 6 5 V VBAT under voltage test Bit 5 5 V VBAT over voltage test Bit 4 Power supply for analog receiver unit under voltage test Bit 3 Power supply for analog receiver unit over ...

Page 62: ...ical performance and Life Cycle Costs LCC The LRF modules design ensures minimum maintenance activities resulting in minimum LCC through the use of current and modern technologies The following service levels are based on Safran Vectronix AG ILS standards Level 1 User Customer Maintenance See 7 1 Cleaning Level 2 Field Maintenance not applicable Level 3 Depot Maintenance not applicable Level 4 Fac...

Page 63: ...nd terminal software and drivers USB to LRF Interface cable including connector to an external power supply Eye Safety Kit Screws to mount the LRF As an alternative to the Safran Vectronix AG Terminal Software other terminal programs can be used for testing and PC communication with the LRF We recommend PTronix SimpleTerm SE For further information please visit http www ptronix com products ststan...

Page 64: ... All rights reserved Page 64 72 9 Appendix 9 1 System Connector The following drawing indicates the design requirements for the host system connector which needs to be attached to the system connector of the LRF module All information can also be found here http suddendocs samtec com prints hlcd 20applications mkt pdf ...

Page 66: ...LRF 7047 Integrator Manual 914929_TML_LRF7047_en_Version B Public 04 2019 Confidential Proprietary Safran Vectronix AG All rights reserved Page 66 72 9 2 Mechanical Interface Drawing ...

Page 68: ...F 7047 Integrator Manual 914929_TML_LRF7047_en_Version B Public 04 2019 Confidential Proprietary Safran Vectronix AG All rights reserved Page 68 72 9 3 Reference design for Transmitter and receiver lenses ...

Page 69: ...LRF 7047 Integrator Manual 914929_TML_LRF7047_en_Version B Public 04 2019 Confidential Proprietary Safran Vectronix AG All rights reserved Page 69 72 9 4 Reference design for connector ...

Page 71: ...e ESD Electro Static Discharge FPGA Field Programmable Gate Array GND Ground HEX Hexadecimal HW Hardware IBIT Initiated Built In Test IEC International Electrotechnical Commission ILS Integrated Logistic Support LCC Life Cycle Costs LRF Laser Rangefinder MCU Microcontroller Unit MSG Message NATO North Atlantic Treaty Organization NOHD Nominal Ocular Hazard Distance 0D Identical with CR OEM Origina...

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