LR120K1 30km Long-Range Laser Rangefinder & Target Designator
LR120K1 30km Long-Range Laser Rangefinder & Target Designator
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LR120K1 · 1064 nm laser ranging and designation system
LR120K1 is listed in ERDI's 1064 nm ranging and designation family. Product-specific values, conditions and documents are shown only where they are bound to this model's controlled record.
Technical Downloads
Use the current controlled document revision for design review. Confirm the ordered connector and mechanical configuration before release.
- PDF Datasheet — LR120K1 — verified product specification (.pdf)
- 1064 nm Systems Catalog (EN) — full family catalogue (.pdf)
- 3D model — the controlled STEP source is released on request. Contact us with your integration requirement.
Detailed LR120K1 Specifications
The tables below retain the supplied model record. A value, option or condition from another model is not interchangeable.
| Functional Characteristics | |
| Provides laser ranging capability | |
| Supports long-cycle laser designator, short-cycle laser designator, and emergency laser designator modes. | |
| Includes built-in fixed frequency codes and supports online coding | |
| Supports receiver detector lockout via command control; the receiver is locked by default at power-on. | |
| Provides product temperature reporting. | |
| Supports both internal trigger and external trigger operating modes. | |
| Supports querying the laser emission count (cumulative count). | |
| Provides energy adjustment capability for product maintenance. | |
| Performance Parameters | |
| Operating wavelength | 1064 nm ± 3 nm |
| Energy (minimum) | ≥ 120 mJ |
| Energy levels | 50 mJ, 80 mJ, 120 mJ |
| Energy ranges per level | l 50–70 mJ l 80–100 mJ l ≥ 120 mJ |
| Energy stability | ≤ ±10% per cycle (calculated after 2 s of laser designator) |
| Effective range (large target) Laser ranging: | a) ≥ 30 km (conditions: visibility ≥ 45 km, target reflectivity 0.2, relative humidity ≤ 80%) b) ≥ 20 km (conditions: visibility ≥ 30 km, target reflectivity 0.2, relative humidity ≤ 80%) c) Minimum ranging distance: ≤ 300 m |
| Ranging accuracy | ± 1 m |
| Repetition rate | Laser ranging: 1 Hz, 5 Hz laser designator: 20 Hz |
| Valid measurement rate | ≥ 98% |
| Pulse width | 15 ns ± 5 ns |
| Beam divergence | ≤ 0.15 mrad |
| Optical axis parallelism | Parallelism between mounting datum plane and optical axis ≤ 0.3 mrad |
| Operating modes | a) Laser ranging: continuous operation ≥ 10 min, rest 5 min b) Short-duration laser designator: Single laser designator duration ≥ 16 s, interval ≤ 9 s, 10 consecutive cycles; interval between major cycles ≤ 15 min c) Long-durationlaser designator: Single laser designator duration ≥ 60 s, interval ≤ 60 s, 5 consecutive cycles constitute one major cycle; interval between major cycles ≤ 30 min d) Emergency illumination (switching from ranging to laser designator): Single laser designator duration ≥ 16 s, interval ≤ 9 s, laser designator can be initiated at any time |
| Laser designator coding | a) 16 coding patterns b) Coding accuracy: ± 1 μs c) Coding range: 45,000 μs – 60,000 μs |
| Weight Requirements | |
| Total unit weight | ≤ 2 kg |
| Weight consistency | ≤ 50 g |
| Structural Requirements | |
| Overall dimensions | ≤ 75 mm (W) × 90 mm (H) × 220 mm (L) |
| 3D digital model requirements | The external model shall be complete and comprehensive, including details such as screws, cable routing, and mating connectors. |
| Load cable routing shall be included in the model design to avoid interference with the system. | |
| Electrical Interface | |
| DC input | 18 V–32 V, typical supply 28 V |
| Average power consumption | ≤ 120 W @ 28 V |
| Peak power consumption | ≤ 200 W @ 28 V |
| Power-on inrush current | ≤ 5 A @ 28 V |
| Digital ground, power ground, and mechanical housing shall be electrically isolated. | |
| Environmental Adaptability Requirements | |
| Operating Temperature | −40 °C to +60 °C |
| Temperature entry — source label unresolved | Withheld pending a corrected, controlled model specification. See the source-review note above. |
| Vibration | |
| Equipment vibration testing shall be conducted in accordance with MIL-STD-810G, Laboratory Environmental Test Methods for Military Equipment. | |
| Vibration conditions | 8.2 Hz – 86.4 Hz: 0.1 g²/Hz 156.4 Hz – 172.8 Hz: 0.025 g²/Hz 234.6 Hz – 259.2 Hz: 0.006 g²/Hz Other frequency points within 15 Hz – 2000 Hz: acceleration spectral density of 0.004 g²/Hz Vibration shall be applied along the X, Y, and Z axes, 15 minutes per axis. |
| Shock | |
| Vertical axis | ≥ 20 g |
| Lateral and longitudinal axes | ≥ 15 g |
| Pulse duration | 11 ms |
| 3 axes, 2 directions per axis, 18 shocks in total | |
| Shock testing shall be conducted in accordance with MIL-STD-810G, Laboratory Environmental Test Methods for Military Equipment. | |
Interface and pin definitions
| Pin | Definition | Description |
|---|---|---|
| A1 | +28 V Input Power | |
| A2 | +28 V Input Ground | |
| 4 | Designator Serial TX+ (from designator to EO platform +) | |
| 11 | Designator Serial RX− (from EO platform to designator −) | |
| 9 | Designator Serial TX− (from designator to EO platform −) | |
| 2 | Designator Serial RX+ (from EO platform to designator +) | |
| 8 | Designator Serial Ground | |
| 14 | External Sync RS-422 RX+ | RS-422 level input |
| 12 | External Sync RS-422 RX− | |
| 13 | External Sync RS-422 GND | |
| 5 | CAN H | Isolated CAN 2.0B, 1 Mbps, no termination resistor installed |
| 6 | CAN L | |
| 7 | CAN GND | |
| B1 | Laser Designation Sync Signal Output TX+ | RS-422 level output, active low, pulse width 10 μs |
| B2 | Laser Designation Sync Signal Output TX− | |
| 3 | Laser Designation Sync Signal Output GND |
Application context
Application labels indicate evaluation context, not automatic fitness for a finished system.
The controlled LR120K1 PDF describes artillery fire support, laser-guided munitions, and vehicle- or shipborne EO/IR platforms.
This context is bound only to the controlled LR120K1 document; end-system suitability and acceptance remain subject to engineering review.
INTEGRATION CHECK
Model-specific conditions and limits
Conditions are retained only when the source states them. They are not reconstructed from a nominal range or wavelength.
FAQ
Is 1064 nm visible to the eye? It is infrared rather than ordinary visible light. Absence of a visible beam does not indicate absence of emission or hazard. Do not use visual appearance as an exposure assessment.
Does the wavelength determine the laser class? No. Product classification depends on accessible emission and the relevant assessment conditions. The wavelength is one input, not a classification certificate.
Does pulse energy describe electrical consumption? No. Pulse energy is optical energy per pulse. Supply consumption is an electrical quantity and belongs to its own operating condition in the model documentation.
Are accuracy and resolution interchangeable? No. A reporting increment is not a bound on measurement error. Read each field under its own definition and test conditions.
Can full-angle and half-angle divergence be compared directly? Not without identifying the convention. If the released record does not state it, request the measurement definition rather than silently choosing one.
Can the best figures from different operating modes be combined? No. A rate, duration or stability condition belongs to the mode to which it is assigned. Combining unrelated conditions creates a new, unsupported specification.
Does a cited standard prove certification? No. A citation identifies a framework or test method. Certification or completed qualification needs the relevant report and an explicit statement of the assessed product configuration.
What does a “typical” value mean here? It describes the source record’s representative value, not a newly guaranteed upper or lower limit. A typical entry must remain labeled typical.
Can storage temperature be used as the operating range? No. Non-operating storage and powered operation are different states. Preserve both entries and their qualifiers.
Does a reference paper establish this product’s internal material or design? No. General laser physics is not a bill of materials. Internal materials and construction require a controlled model source.
What should happen when a source unit or field is incomplete? Leave the uncertainty visible and obtain a corrected controlled document. Do not infer a missing unit, test condition or option from the product name.
Where are the sources for this page? The Technical Downloads area contains the model document. The bibliography separates product evidence from general standards and safety information; neither replaces a unit-specific test record.
ENGINEERING REFERENCES
Content aligned with the ERDI 1064 nm product documentation for LR120K1. Request the controlled PDF and STEP model for design release.
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Return and Exchange Policy
- Customers may request a return or exchange within 30 daysof receiving the goods, provided that:
- The product remains in original condition, unused, and without affecting secondary sales.
- A valid reason for return or exchangeis provided.
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- Within the first 12 months, if a verified manufacturing defect occurs, we will replace the item with a brand-new productfree of charge.
- Replacement of cosmetic or housing components (e.g., enclosure, labeling, or exterior parts) may incur a reasonable cost feebased on material expenses.
- Warranty does not cover:
- Damage due to misuse, improper installation, or modification.
- Operation outside the recommended power supply or temperature range.
- Accidental or physical damage, including drops, fire, or liquid ingress.
Receiving Inspection
- Upon delivery, please inspect the parcel immediately in the presence of the courier.
- If there is any quantity discrepancy, visible damage, or mismatch, do not signthe delivery receipt.
- Once the package is signed for (by you, family, or colleagues), it is considered accepted as correct and complete.