1540nm Laser rangfinder-G8K15 adopts ERDI microchip laser module, Stable distance measurement power, small size and light weight，Visibility is not less than 15km under clear-sight conditions, and the ranging distance for vehicles (2.3m×2.3m targets) is ≥8000m.
| Item | Technical parameter |
| Working wavelength | 1.54μm±0.02μm |
| Range scope | 30m~8000m |
| Object | Visibility is not less than 15km under clear-sight conditions, and the ranging distance for vehicles (2.3m×2.3m targets) is ≥8000m |
| Main function
|
Single ranging and continuous ranging |
| Three-target ranging and front and rear target indication | |
| Self-test function (including: current APD temperature, high voltage value, internal voltage, blind zone value) | |
| Standby wake-up function can be realized by modifying to TTL interface | |
| Accuracy rate | ±2m |
| Continuous ranging frequency | 0.5Hz-10Hz |
| Accuracy rate | ≥98% |
| Effective Clear Aperture | 40mm |
| Number of laser pulses fired between mean failure (MNBF) | ≥1×106 times |
| Voltage | DC12V |
| Working power consumption | ≤2W(@1hz) |
| Standby power consumption | ≤0.5W |
| Size | 64mm×42mm×80mm |
| Weight | <145g |
| Cooling method | Conduction cooling |
| Working temperature | -40℃～+65℃ |
| Storage temperature | -55℃～+70℃ |
Electrical connector model: J30J; the detailed definition of the electrical interface is as follows:
Table 1 Interface definition
| Pin No. | Definition | Function | Remark |
| 1 | GND | Land | |
| 2 | GND | Land | |
| 3 | GND | Land | |
| 4 | VCC 12V | 12V input positive | |
| 5 | VCC 12V | 12V input positive | |
| 6 | RS422 RX+ | Serial receiving+ | Host computer to Laser rangefinder |
| 7 | RS422 RX- | Serial port receiving- | Host computer to Laser rangefinder |
| 8 | RS422 TX- | Serial send- | Laser rangefinder to Host computer |
| 9 | RS422 TX+ | Serial send+ | Laser rangefinder to Host computer |
The data transmission between the rangefinder and the host computer includes the following contents:
Control commands: including starting ranging, continuous ranging, single ranging, query commands, etc.
Loopback data: including distance information, ambient temperature, range finder status, etc. The data exchange between the distance measuring machine and the host computer adopts 422 bus. The specific software communication protocol is as follows:
Communication format: RS422 communication, baud rate 115200bps (can be changed according to customer requirements);
Data format: 8-bit data, one start bit, one stop bit, no parity check, the data consists of header byte, command part, data length, parameter part, check byte;
Communication mode: the main control and the distance measuring machine adopt the master-slave communication mode, the master control sends control commands to the distance measuring machine, and the distance measuring machine receives and executes the instructions. In the ranging state, the rangefinder sends back the data and status of the rangefinder to the upper computer according to the ranging cycle. The communication format and command content are shown in the following table.
Master send
The sending message format is as follows:
| STX0 | CMD | LEN | DATA1H | DATA1L | CHK |
Table 2 Description of sending message format
| No. | Name | Description | Code | Remark |
| 1 | STX0 | Message start flag | 55(H) | |
| 2 | CMD | Command word | See table 3 | |
| 3 | LEN | Data length | The number of all bytes except the start sign, command word and checksum | |
| 4 | DATAH | Parameter | ||
| 5 | DATAL | |||
| 6 | CHK | XOR check | In addition to the parity byte, other bytes are exclusive or |
Electrical connector model: J30J; the detailed definition of the electrical interface is as follows:
Table 1 Interface definition
| Pin No. | Definition | Function | Remark |
| 1 | GND | Land | |
| 2 | GND | Land | |
| 3 | GND | Land | |
| 4 | VCC 12V | 12V input positive | |
| 5 | VCC 12V | 12V input positive | |
| 6 | RS422 RX+ | Serial receiving+ | Host computer to Laser rangefinder |
| 7 | RS422 RX- | Serial port receiving- | Host computer to Laser rangefinder |
| 8 | RS422 TX- | Serial send- | Laser rangefinder to Host computer |
| 9 | RS422 TX+ | Serial send+ | Laser rangefinder to Host computer |
The data transmission between the rangefinder and the host computer includes the following contents:
Control commands: including starting ranging, continuous ranging, single ranging, query commands, etc.
Loopback data: including distance information, ambient temperature, range finder status, etc. The data exchange between the distance measuring machine and the host computer adopts 422 bus. The specific software communication protocol is as follows:
Communication format: RS422 communication, baud rate 115200bps (can be changed according to customer requirements);
Data format: 8-bit data, one start bit, one stop bit, no parity check, the data consists of header byte, command part, data length, parameter part, check byte;
Communication mode: the main control and the distance measuring machine adopt the master-slave communication mode, the master control sends control commands to the distance measuring machine, and the distance measuring machine receives and executes the instructions. In the ranging state, the rangefinder sends back the data and status of the rangefinder to the upper computer according to the ranging cycle. The communication format and command content are shown in the following table.
Master send
The sending message format is as follows:
| STX0 | CMD | LEN | DATA1H | DATA1L | CHK |
Table 2 Description of sending message format
| No. | Name | Description | Code | Remark |
| 1 | STX0 | Message start flag | 55(H) | |
| 2 | CMD | Command word | See table 3 | |
| 3 | LEN | Data length | The number of all bytes except the start sign, command word and checksum | |
| 4 | DATAH | Parameter | ||
| 5 | DATAL | |||
| 6 | CHK | XOR check | In addition to the parity byte, other bytes are exclusive or |
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