45mJ Laser Target Designator(LTD) wiht LRF

STA-B45M is a military 45mj laser target designator that plays a crucial role in precision aiming systems, capable of providing precise guidance for smart ammunition. Through an advanced optical system, it marks the target with a laser beam, ensuring that precision-guided weapons can destroy the target with extremely high accuracy and efficiency.

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Product Description

Product Features

Lightweight and miniaturized
Environmental adaptability: -40 ℃~60 ℃ wide temperature adaptability

Core indicator parameters

Function
a) It has the function of setting the irradiation cycle and can perform laser irradiation according to the set cycle.
b) Equipped with laser single and repeated ranging functions.
c) Equipped with multi-target ranging function.
d) Equipped with temperature output function for the core components of the camera.
e) Equipped with overheat protection function for the measuring device.
f) Equipped with the function of outputting status information of the lighting device.

Technical parameters

Model	STA-B6445M
Laser wavelength	1.06um (using Nd: YAG crystal, design selection guarantee)
Laser average energy	≥ 45mJ (energy fluctuations ≤ ± 8%);
laser divergence angle	≤ 0.5mrad
laser emission optical axis stability	≤ 0.05mrad
laser emission optical axis and the installation of the base plane is not parallel	≤ 3' (design guarantee);
Laser pulse width	10ns ~ 22ns
Max Ranging	Visibility ≥ 12km, maximum range for measuring NATO targets ≥ 6km;
Mini Ranging	100m
Ranging repeat frequency	1hz/5hz/single
Ranging accuracy	≤ ± 2m (RMS)
ranging accuracy	≥ 98%
Distance resolution	≤ 50m
Continuous ranging working time	5min (5Hz: continuous work 5min, rest ≤ 3min, can continue to range).
Maximum irradiation distance	≥ 5km
Minimum irradiation distance	≤ 500m (with the system assessment)
Continuous irradiation cycle	8, each cycle lasts 25s, with 15s interval; after 8 cycles, rest interval ≤ 20 min;
Laser code period (set by communication protocol)	setting range 40ms～100ms
Laser coding timing accuracy	≤±2μs
Laser start-up time	≤3min
Extra-code synchronisation function	Yes
Working temperature:	-40~+60℃
Storage temperature	-50~+70℃
Weight	≤580g
Modul Size	138x75x50mm
with multi-target measurement capability, and return three multi-target value, with distance selective pass function.Frequency code and variable interval code can be set (set by communication protocol).

Preparation for use

Check whether the power supply voltage is between 18V and 32V. When the voltage is too low (less than 18V), the rangefinder may not communicate correctly or indicate ‘no laser output’, and when the voltage is too high (more than 32V), the whole illuminator may be permanently damaged. Ensure that the rated output current of the power supply system is greater than 6A, if it is less than this value, there may be no laser during operation. Ensure that the polarity of the power supply is correctly connected, there is a risk of damage to the equipment if the polarity is reversed. See Appendix A for definitions of power supply sockets.

Precautions for use

a) The laser emitted by this rangefinder is a 1.06µm non-eye safe wavelength laser, avoid direct laser light to the eyes when using.
b) When adjusting the parallelism of the optical axis, be sure to block the receiving lens, otherwise the detector will be permanently damaged due to the strong echo.
c) This rangefinder module is non-airtight, be sure to use the environment relative humidity is less than 80%, and ensure that the use of environmental cleanliness and hygiene, so as not to damage the laser.
d) The range of the rangefinder is related to the atmospheric visibility and the nature of the target, in the case of fog, rain and wind and sand ranging will reduce the range. Targets such as green leaf clusters, white walls and exposed limestone have better reflectivity and can increase range. In addition, an increase in the inclination of the target to the laser beam will reduce range.
e) It is strictly prohibited to fire the laser beam at strongly reflective targets such as glass and white walls within 100 metres to avoid strong echoes, which may cause damage to the APD detector.
f) It is strictly prohibited to unplug or plug the cable while it is energised.
g) Make sure that the power polarity is correctly connected, otherwise it will lead to permanent damage to the device.

Definition of interface sockets

Table 1 Definition of external interfaces

Order number	Interface type	Pigment	Definition	Remarks
1	DB9 interface definition	Palm	RS422 T+	RS422 communication interface
2		Purple	RS422 T-
3		Yellow	RS422 R-
4		Green	RS422 R+
5		White	GND
6		Ash	External trigger-	RS422 level
7		Blue	External trigger +	RS422 level
8	Definition of power interface	Black	VCC+	DC 18V～32V
9	Definition of power interface	Red	VCC-	DC 18V～32V

Figure 2 Two-dimensional size diagram of the product

Interface communication protocol

1.Communication format:
a)The default baud rate is 115200bps.
b)Data format: 8-bit data, one start bit, one stop bit, no parity check, data consists of header byte, command part, data length, parameter part and check byte.

2.communication mode:
a)The master and the measuring device use the master-slave communication mode, in which the master sends control commands to the measuring device and the measuring device receives and executes the instructions. In the ranging state, the measuring device sends the data and status of the measuring device back to the upper computer according to the ranging period, and the communication format and command content are shown in the following table.
b)After the master sends the control command, the meter continuously responds with three response commands. If the master does not receive the response command from the meter within the time limit, it will resend it again.
The format of the message to be sent is as follows

STX0

CMD

LEN

DATA1H

DATA1L

CHK

Table 2 Format description of the message sent

order number	name	explain	code	remarks
1	STX0	Message start flag	55(H)
2	CMD	CW	See table 3
3	LEN	DL	The number of all bytes except the start mark, command word, and checksum
4	DATAH	parameter	See table 3
5	DATAL	parameter	See table 3
6	CHK	XOR verification	Except for the valid byte, all other bytes are XORed

The command is described as follows:
Table 3 Description of commands and data words sent by the master to the meter

order number	CW	function	data byte	remarks	length	Example code
1	0x00	Stop (stop ranging illumination)	D1=00（H）D0=00（H）		Six bytes	55 00 02 00 00 57
2	0x01	Single ranging	D1=00（H）D0=00（H）	The measuring device receives a single ranging instruction, performs a ranging operation and uploads the ranging distance value at the same time;	Six bytes	55 01 02 00 00 56
3	0x02	Continuous ranging	D1=XX（H）D0=YY（H）	According to the set ranging period, the ranging distance value is uploaded continuously. DATA expresses the ranging period, and the unit is ms	Six bytes	55 02 02 03 E8 BE(1Hz ranging)
4	0x03	self-checking	D1=00（H）D0=00（H）		Six bytes	55 03 02 00 00 54
5	0x04	Blind zone setup	D1=XX（H）D0=YY（H）	DATA describes the blind zone value, unit 1m, and sets the distance display within the blind zone to 0;	Six bytes	55 04 02 01 2C 7E(300m is the closest distance)
6	0x06	Cumulative number of light output queries	D1=00（H）D1=00（H）	Power off storage;	Six bytes	55 06 02 00 00 51
7	0x31	Set the precise code	D4 D3~D0	D4: precise code number, built-in 8 groups, numbered 1~8;D3~D0 represents the pulse period, unit usRange: 45000~60000	Nine bytes	55 31 05 01 00 00 c3 50 f3(Precise code number: 1Cycle: 0000c350=50000us)
8	0x32	Set variable interval codes	D33 (ref.)D32 (number of coding bits)D31~D30 (time interval between the last bit 0)D29~D28 (time interval between bit 14 and bit 15)D27~D26 (time interval between bit13 bit14)D25~D24 (time interval between bit 12 and bit 13)D23~D22 (time interval between bit11 bit12)D21~D20 (time interval between bit10 bit11)D19~D18 (time interval between bit9 bit10)D17~D16 (time interval between bit8 bit9)D15~D14 (time interval between bit7 bit8)D13~D12 (time interval between bit6 and bit7)D11~D10 (time interval between bit5 bit6)D9~D8 (time interval between bit4 bit5)D7~D6 (time interval between bit3 bit4)D5~D4 (time interval between bit2 bit3)D3~D2 (time interval between bit1 bit2)D1~D0 (time interval between bit0 and bit1)	D33: variable interval code number, built-in 16 groups, the number range is 1~16;D32: Number of coding bits, ranging from 3 to 16Time interval unit usRange: 45000~60000	38 bytes
9	0x33	Setting of pseudo-random codes	D4 D3~D0	D4: pseudo-random code coding, with 2 built-in groups, numbered from 1 to 2;D3: Length of pseudo-random code, ranging from 2 to 16D2 D1: Initial value of pseudo-random code, which is taken from the lower bit according to the length of pseudo-random codeD0: standby, set 0	Nine bytes	55 33 05 01 10 aa aa 00 72(Pseudo-random code number: 1Pseudo random code length: 16Initial value:aaaa)
10	0x41	Set the query for precision codes	D1 D0	D1: precise code number, the number range is 1~8D0: standby, set 0	Six bytes	55 41 02 01 00 13Set the query for Precision Code 1
11	0x42	Set the query for variable interval codes	D1 D0	D1: Variable interval code number, the number range is 1~16D0: standby, set 0	Six bytes	55 42 02 01 00 14Set the query for variable encoding 1
12	0x43	Set up a query for pseudo-random codes	D1 D0	D1: Pseudo-random code number, the number range is 1~2D0: standby, set 0	Six bytes	55 43 02 01 00 15Set the query with pseudo-random coding 1
13	0x44	Continuous irradiation working time setting	D1=00（H）D0=YY（H）	YY continuous irradiation time refers to the continuous working time of the meter under the continuous irradiation mode, unit s. The automatic stop will be stopped after timeout	Six bytes	55 44 02 00 3C 2FContinuous working time 60s
14	0x45	Continuous irradiation working time query	D1=00（H）D0=00（H）		Six bytes	55 45 02 00 00 12
15	0x30	Precise code irradiation	D3~D0	D3: irradiation mode, 00 continuous irradiation, 01 periodic irradiationD2: 01 precise code irradiationD1: precise code numberD0: Standby 00	Eight bytes	55 30 04 00 01 01 00 61Code 1, continuous illumination of precise code
		Variable interval code irradiation	D3~D0	D3: irradiation mode, 00 continuous irradiation; 01 periodic irradiationD2:02 Variable interval code irradiationD1: Variable interval code numberD0: Standby 00	Eight bytes	55 30 04 00 02 01 00 62Code 1, variable interval code continuous irradiation
		External synchronous irradiation	D3~D0	D3: 00 External synchronization is only continuous illuminationD2: 03 external synchronous irradiationD1:00D0:00	Eight bytes	55 30 04 00 03 00 00 62
		Pseudo-random code irradiation	D3~D0	D3: irradiation mode, 00 continuous irradiation; 01 periodic irradiationD2:04 Pseudo-random code irradiationD1: Pseudo-random code numberD0: Standby 00	Eight bytes	55 30 04 00 04 01 00 64Code 1, pseudo-random code continuous irradiation
16	0x24	Periodic irradiation parameter setting	D2 D1 D0	D2: Number of working cyclesD1: Working time per cycle, unit sD0: Rest time per cycle, in s	Seven bytes	55 24 03 08 14 0A 64(8 cycles, 20s work and 10s rest per cycle)
17	0x25	Periodic irradiation parameter query	D1=00（H）D0=00（H）		Six bytes	55 25 02 00 00 72
18	0xEB	Equipment number query	D1=00（H）D0=00（H）		Six bytes	55 EB 02 00 00 BC
19	0x51	Debug mode	D1 D0	D1: 01 Enter debugging mode, 00 exit debugging modeD0: Standby	Six bytes	55 41 02 01 00 17Enter debug mode55 41 02 00 00 16Exit debug mode

a)Main control receives format
The format of the received message is as follows:

STX0

CMD

LEN

DATAn

DATA0

CHK

Table 4 Format description of received messages

order number	name	explain	code	remarks
1	STX0	Message start flag 1	55(H)
2	CMD_JG	Data command word	See table 5
3	LEN	DL	The number of all bytes except the start mark, command word and checksum
4	Dn	parameter	See table 5
5	D0	parameter	See table 5
6	CHK	XOR verification	Except for the valid byte, all other bytes are XORed

Main control receiving status description:
Table 5 describes the data word sent by the meter to the master

order number	CW	function Feedback (corresponding to the control command received by the measuring device)	data byte	remarks	overall length
1	0x00	Stop (stop ranging illumination)	D1=00（H）D0=XX（H）	XX: 00 Normal stop01 Stop at high temperature02 Stop when overdue	Six bytes
2	0x03	self-checking	D8 ~D0C5~C0B2~B0	D8-D7 (int type): -5V voltage value feedback, unit 0.01V.D6-D5: Feedback of blind spot setting value, unit 1mD4-D3: APD high voltage feedback, unit V;D2: char type, indicating the main control environment temperature (environment), unit: degrees Celsius;D1-D0: +5V voltage feedback, unit 0.01VC5-C4: Actual drive current value feedback unit AC3-C2: Set the feedback of drive current value in unit AC1-C0: temperature control temperature feedback unit 0.1℃B2: Drive temperature control status (8bit)Bit0: 0 temperature control to temperature 1 not reachedBit1: 0 temperature control is normal 1 temperature control is overcurrentBit2: The drive current is normal 1. Drive current overcurrentBit3: The drive voltage is normal 1. Drive voltage overvoltageBit4: The drive current and set value are normal 1 The difference between the drive current and the set value is greater than 5AB1: Drive communication status (measuring the communication status between the main control board and the drive module)0 is normal and 1 is faultBit0: Set whether the current is successfulBit1: Whether the pulse width is set successfullyBit2: Set whether the external trigger is successfulBit3: Whether the driver starts successfullyBit4: Whether the driver stop is successfulBit5: Set whether the internal trigger is successfulBit6: SpareBit7: Drive queryB0: Temperature control communication status (communication status between the main control board and the temperature control module)0 is normal and 1 is faultBit0: Whether the temperature control start is successfulBit1: Whether the temperature control stop is successfulBit2: Whether the temperature setting is successfulBit3: Whether the temperature control query is successfulBit4: SpareBit5: SpareBit6: SpareBit7: Spare	22 bytes
3	0x04	Blind zone setting, unit m	D1 D0	DATA describes the nearest distance value, unit 1m;Start high and end low	Six bytes(Drop power saving)
4	0x06	Cumulative number of light output queries	D3~D0	DATA expresses the number of lights, 4 bytes, with the high byte first	Eight bytes
5	0x31	Set the precise code	D4 D3~D0	D4: precise code number, range 1~8D3~D0 represents the period, unit usRange: 45000~60000	Nine bytes
6	0x32	Set variable interval codes	D1 D0	D1 variable interval code number range 1~16D0 00 is set successfully, and 01 is set failed	Six bytes
7	0x33	Set a pseudo-random code	D1 D0	D1 pseudo-random code number range 1~2D0 00 is set successfully, and 01 is set failed	Six bytes
8	0x41	Precise code cycle query	D4 D3~D0	D4: precise code number, range 1~8D3~D0 represents the period, unit usRange: 45000us~60000us	Nine bytes
9	0x42	Variable interval code query	D33 (ref.)D32 (number of coding bits)D31~D30 (time interval between the last bit 0)D29~D28 (time interval between bit14 bit15)D27~D26 (time interval between bit13 bit14)D25~D24 (time interval between bit 12 and bit 13)D23~D22 (time interval between bit 11 and bit 12)D21~D20 (time interval between bit 10 and bit 11)D19~D18 (time interval between bit9 and bit10)D17~D16 (time interval between bit8 bit9)D15~D14 (time interval between bit 7 and bit 8)D13~D12 (time interval between bit6 bit7)D11~D10 (time interval between bit5 bit6)D9~D8 (time interval between bit4 and bit5)D7~D6 (time interval between bit3 bit4)D5~D4 (time interval between bit2 bit3)D3~D2 (time interval between bit1 bit2)D1~D0 (time interval between bit0 bit1)		38 bytes
10	0x43	Pseudo-random code query	D4 D3~D0	D4: pseudo-random code coding, range 1~2D3: Length of pseudo-random code, ranging from 2 to 16D2 D1: Initial value of pseudo-random code, which is taken from the lower bit according to the length of pseudo-random codeD0: standby, set 0	Nine bytes
11	0x44	Continuous irradiation working time setting	D1=00（H）D0=YY（H）	YY continuous irradiation time, unit s, timeout automatically stop	Six bytes
12	0x45	Continuous exposure working time query	D1=00（H）D0=YY（H）	YY continuous irradiation time, unit s, timeout automatically stop	Six bytes
13	0x24	Periodic irradiation parameter setting	D2 D1 D0	D2: Number of working cyclesD1: Working time per cycle, unit sD0: Rest time per cycle, in s	Seven bytes
14	0x25	Periodic irradiation parameter query	D2 D1 D0	D2: Number of working cyclesD1: Working time per cycle, unit sD0: Rest time per cycle, in s	Seven bytes
15	0xEB	Equipment number query	D15~D0	D15~D12: Product modelD11 D10: Product numberD9 D8: Software versionD7 D6: Adjust Q numberD5 D4: Drive numberD3 D2: Laser numberD1 D0:FPGA ID	20 bytes
16	0x51	Debug mode	D1 D0	D1: 01 Enter debugging mode, 00 exit debugging modeD0: Standby	Six bytes
17	0x01	Single ranging	D9D8 D7 D6D5 D4 D3D2 D1 D0B4 B3 B2 B1 B0	D9 (bit7-bit0) flag byte:D9 is the 7th position indicating the main wave; 1: there is a main wave, 0: no main wave.D9 is the 6th position indicating echo; 1: there is echo, 0: no echoD9 The 5th bit indicates the laser status; 1: normal laser, 0: laser faultD9 is invalid (set to 0) at the 4th position;D9 is invalid at the 3rd position (set to 0);D9 The second position indicates the APD state; 1: normal, 0: errorD9 is the first position indicating whether there is a previous target; 1: there is a target, 0: no target (the target before the main target is the previous target, and the target in the blind area).D9 The 0th bit indicates whether there is a subsequent target; 1: there is a target, 0: there is no target (the target after the main target is the subsequent target)D8-D6 first target distance (unit 0.1m)D5-D3 distance to the second target (unit 0.1m)D2-D0 third target distance (unit 0.1m)3. Goals are from near to farB4 and B3 indicate high pressure valuesB2 indicates the drive current valueB1 B0 indicates the temperature of the laser	19 bytes
18	0x02	Continuous ranging	D9 D8 D7 D6D5 D4 D3D2 D1 D0B4 B3 B2 B1 B0	D9 (bit7-bit0) flag byte:D9 is 7th position indicating the main wave; 1: there is a main wave, 0: no main wave.D9 is the 6th position indicating echo; 1: there is echo, 0: no echoD9 The 5th bit indicates the laser status; 1: normal laser, 0: laser faultD9 is invalid at the 4th position (set to 0);D9 is invalid at the 3rd position (set to 0);D9 The second position indicates the APD state; 1: normal, 0: errorD9 is the first position to indicate whether there is a previous target; 1: there is a target, 0: there is no target (the target before the main target is the previous target, and the target in the blind area).D9 The 0th bit indicates whether there is a subsequent target; 1: there is a target, 0: there is no target (the target after the main target is a subsequent target)D8-D6 first target distance (unit 0.1m)D5-D3 distance to the second target (unit: 0.1m)D2-D0 third target distance (unit 0.1m)3. Goals are from near to farB4 and B3 indicate the APD high pressure valueB2 indicates the drive current valueB1 B0 Represents the temperature of the laser	19 bytes
19	0x30	shining	D9 D8 D7 D6D5 D4 D3D2 D1 D0B4 B3 B2 B1 B0	D9 (bit7-bit0) flag byte:D9 is the 7th bit to indicate the main wave; 1: there is a main wave, 0: no main wave.D9 is the 6th position indicating echo; 1: there is echo, 0: no echoD9 The 5th bit indicates the laser status; 1: normal laser, 0: laser faultD9 is invalid at position 4 (set to 0)D9 is invalid at the 3rd position (set to 0);D9 The second position indicates the APD status; 1: normal, 0: errorD9 is the first position to indicate whether there is a previous target; 1: there is a target, 0: no target (the target before the main target is the previous target, and the target in the blind area).D9 The 0th bit indicates whether there is a subsequent target; 1: there is a target, 0: there is no target (the target after the main target is the subsequent target)D8-D6 first target distance (unit 0.1m)D5-D3 distance to the second target (unit: 0.1m)D2-D0 third target distance (unit 0.1m)3. Goals are from near to farB4 and B3 indicate the APD high pressure valueB2 indicates the drive current valueB1 B0 Represents the temperature of the laser	19 bytes
20	0xEC	An instruction error	D1=00 D0=00	The camera feedback command is incorrect	Six bytes
21	0xEE	Effectiveness errors	D1=00 D0=00	The camera feedback is incorrect	Six bytes


Note: ① Undefined data byte/bit, default is 0;