The technical material below is retained for this model only. Do not transfer a range, pulse, interface, mechanical or safety value from another 1535 nm product.
Specifications
LRF1222C is a pulsed distance-measurement module in the 1535 nm product family. Its complete-module specification and source drawings are presented below, separate from general technical explanations.
1. LRF1222C module specifications
Source interface clarification
The source table places “RS422” under a multi-target-count heading; it is reported here as an interface, not a target count. The J30J table labels two supply contacts “VCC 5V” but describes their function as “12V Input Positive”. Those conflicting source labels are retained for traceability, not as wiring instructions. Use the confirmed connector record supplied with the ordered unit.
LRF1222C — TECHNICAL SPECIFICATIONS
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Project
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Performance Indicators
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Model
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LRF1222C
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Laser Wavelength
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1.54μm±0.02μm
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| Module laser-safety statement |
Class I stated in the module document. Final accessible-emission classification applies to the complete configuration. |
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Divergence Angle
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≤0.3 mrad
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Laser Energy
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≥300 μJ
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Launch Lens Diameter
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Φ16.5 mm
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Receiver Lens Diameter
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Φ40 mm
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Measuring Range
（Reflectance 30%; visibility ≥ 12 km.）
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Reference target(2.3m×2.3m) ≥12 km
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Minimum Range
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≤40 m
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Ranging Frequency
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0.5Hz ~10Hz
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Communication interface
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RS422
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Ranging Accuracy
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±2 m
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Range Resolution
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≤0.1 m
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Precision Rate
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≥98%
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False Alarm Rate
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≤1%
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| Connector / interface alternatives |
J30J / RS-422 in the specification table; Molex 51021-0500 / TTL alternative in the interface section. Confirm the ordered version. |
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Supply Voltage
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DC12 V
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Standby power consumption
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≤1.2W
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Average power consumption
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≤2 W
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Peak Power Consumption
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≤3W@10Hz
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Weight
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≤335g
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Dimension (L×W×H)
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Φ58 × 134 mm
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Operating Temperature
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-40～+70 ℃
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Storage Temperature
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-55～+75 ℃
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Impact Resistance
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Meet the MIL-STD-810G testing standard
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Vibration Resistance
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Meet the MIL-STD-810G testing standard
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LRF1222C — PIN INTERFACE
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External plug-in XS3
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Model：Molex51021-0500
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Remark
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1
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TTL RX
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3.3V
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2
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TTL TX
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3.3V
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3
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CTRL
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3.3V-5V power on, 0V power off
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4
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+12V
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Power supply+
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5
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GND
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Power supply-
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LRF1222C — PIN INTERFACE
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Pin
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Definition
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Function
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Remarks
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1
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GND
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Serial Port Ground
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2
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GND
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12V Input Negative
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3
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GND
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12V Input Negative
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4
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VCC 5V
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12V Input Positive
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5
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VCC 5V
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12V Input Positive
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6
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RS422 RX+
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Serial Port Receive +
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From the upper computer to the rangefinder
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7
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RS422 RX-
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Serial Port Receive -
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From the upper computer to the rangefinder
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8
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RS422 TX-
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Serial Port Transmit -
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From the rangefinder to the upper computer
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9
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RS422 TX+
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Serial Port Transmit +
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From the rangefinder to the upper computer
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Model-specific mechanical and interface drawings
