TECHNICAL SPECIFICATIONS
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Functional Characteristics |
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Provides laser ranging capability |
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Supports long-cycle laser designator, short-cycle laser designator, and emergency laser designator modes. |
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Includes built-in fixed frequency codes and supports online coding |
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Supports receiver detector lockout via command control; the receiver is locked by default at power-on. |
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Provides product temperature reporting. |
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Supports both internal trigger and external trigger operating modes. |
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Supports querying the laser emission count (cumulative count). |
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Provides energy adjustment capability for product maintenance. |
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Performance Parameters |
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Operating wavelength |
1064 nm ± 3 nm |
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Energy (minimum) |
≥ 120 mJ |
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Energy levels |
50 mJ, 80 mJ, 120 mJ |
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Energy ranges per level |
l 50–70 mJ l 80–100 mJ l ≥ 120 mJ |
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Energy stability |
≤ ±10% per cycle (calculated after 2 s of laser designator) |
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Effective range (large target) Laser ranging: |
a) ≥ 30 km (conditions: visibility ≥ 45 km, target reflectivity 0.2, relative humidity ≤ 80%) |
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Ranging accuracy |
± 1 m |
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Repetition rate |
Laser ranging: 1 Hz, 5 Hz laser designator: 20 Hz |
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Valid measurement rate |
≥ 98% |
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Pulse width |
15 ns ± 5 ns |
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Beam divergence |
≤ 0.15 mrad |
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Optical axis parallelism |
Parallelism between mounting datum plane and optical axis ≤ 0.3 mrad |
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Operating modes |
a) Laser ranging: continuous operation ≥ 10 min, rest 5 min |
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Laser designator coding |
a) 16 coding patterns |
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Weight Requirements |
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Total unit weight |
≤ 2 kg |
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Weight consistency |
≤ 50 g |
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Structural Requirements |
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Overall dimensions |
≤ 75 mm (W) × 90 mm (H) × 220 mm (L) |
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3D digital model requirements |
The external model shall be complete and comprehensive, including details such as screws, cable routing, and mating connectors. |
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Load cable routing shall be included in the model design to avoid interference with the system. |
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Electrical Interface |
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DC input |
18 V–32 V, typical supply 28 V |
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Average power consumption |
≤ 120 W @ 28 V |
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Peak power consumption |
≤ 200 W @ 28 V |
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Power-on inrush current |
≤ 5 A @ 28 V |
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Digital ground, power ground, and mechanical housing shall be electrically isolated. |
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Environmental Adaptability Requirements |
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Operating Temperature |
−40 °C to +60 °C |
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−40 °C to +60 °C |
−45 °C to +65 °C |
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Vibration |
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Equipment vibration testing shall be conducted in accordance with MIL-STD-810G, Laboratory Environmental Test Methods for Military Equipment. |
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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. |
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Shock |
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Vertical axis |
≥ 20 g |
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Lateral and longitudinal axes |
≥ 15 g |
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Pulse duration |
11 ms |
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3 axes, 2 directions per axis, 18 shocks in total |
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Shock testing shall be conducted in accordance with MIL-STD-810G, Laboratory Environmental Test Methods for Military Equipment. |
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OUTLINE DIMENSION(mm)
PIN INTERFACE
A standard isolated RS-422 communication interface is provided.
Interface chip model: SMUM2682MP.
A standard isolated CAN 2.0B bus communication interface is provided, with a transmission rate greater than 1 Mbps.
CAN transceiver chip model: SMUM3053MP or ADM3053.
No bus termination resistor is included.
Firmware upgrade can be implemented via the CAN interface (CAN protocol to be defined).
Firmware upgrade can also be implemented via the serial interface.
Laser target designator connector: Receptacle J106-4H14ZKSP-02
Electro-optical platform mating plug: Plug J106-4H14TJSL-01
Connector manufacturer: Guihang
Table 1 — Connector Pin Assignment Description
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Pin |
Definition |
Description |
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A1 |
+28 V Input Power |
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A2 |
+28 V Input Ground |
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4 |
Designator Serial TX+ (from designator to EO platform +) |
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11 |
Designator Serial RX− (from EO platform to designator −) |
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9 |
Designator Serial TX− (from designator to EO platform −) |
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2 |
Designator Serial RX+ (from EO platform to designator +) |
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8 |
Designator Serial Ground |
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14 |
External Sync RS-422 RX+ |
RS-422 level input |
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12 |
External Sync RS-422 RX− |
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13 |
External Sync RS-422 GND |
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5 |
CAN H |
Isolated CAN 2.0B, 1 Mbps, no termination resistor installed |
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6 |
CAN L |
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7 |
CAN GND |
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B1 |
Laser Designation Sync Signal Output TX+ |
RS-422 level output, active low, pulse width 10 μs |
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B2 |
Laser Designation Sync Signal Output TX− |
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3 |
Laser Designation Sync Signal Output GND |
Product Description
The LR120K1 (based on the LS-120B specification) is a high-energy 1064 nm laser rangefinder and target designator developed for artillery fire support, laser-guided projectiles and integrated EO/IR platforms on vehicles and turrets. It combines long-range distance measurement with coded laser illumination in a single coaxial aperture, achieving ≥30 km ranging on large targets under clear atmospheric conditions while providing stable coded designation for semi-active laser-guided munitions.
Operating at 1064 nm ±3 nm, the designator offers three energy levels—50 mJ, 80 mJ and ≥120 mJ, with corresponding ranges of 50–70 mJ, 80–100 mJ and ≥120 mJ, and an energy stability of ≤±10% over a single illumination cycle (after 2 s). The pulse width is 15 ns ±5 ns, beam divergence is ≤0.15 mrad, and the alignment between the optical axis and the mounting reference plane is ≤0.3 mrad, ensuring a tight, well-controlled beam for long-range designation and fire-control alignment.
As a rangefinder, LR1200K1 measures ≥30 km (visibility ≥45 km, reflectivity 0.2, RH ≤80%) and ≥20 km (visibility ≥30 km) on large targets, with a minimum range ≤300 m and ±5 m ranging error, and a probability of correct ranging ≥98%. Repetition rates of 1 Hz and 5 Hz are available for ranging, while 20 Hz is used for laser illumination, supporting continuous tracking and guidance updates.
The unit supports long-period illumination, short-period illumination and emergency illumination modes: long and short cycles manage duty and thermal load for sustained fire missions, and emergency mode allows immediate switching from ranging to designation with ≥16 s illumination and ≤9 s interval at any time, which is critical for time-sensitive engagements. A 16-code fixed-frequency coding scheme is provided, with coding period adjustable from 45 000 µs to 60 000 µs and ±1 µs accuracy, enabling compatibility with standard semi-active laser-guided ammunition libraries.
For integration and diagnostics, LR1200K1 includes built-in fixed coding and on-line coding, an internal trigger and an external trigger mode, detector gating control (receiver locked by default at power-up), temperature reporting and a function to query the cumulative number of laser shots, as well as an energy adjustment function for maintenance and calibration.
Electrically, the system is powered by DC 18–32 V (typ. 28 V), with average power ≤120 W and peak power ≤200 W, and a start-up current of ≤5 A at 28 V. Digital ground, power ground and mechanical chassis are isolated. Communication is provided via a galvanically isolated RS422 serial interface (SMUM2682MP) and an isolated CAN 2.0B bus (SMUM3053MP or ADM3053, up to 1 Mbps); firmware updates are supported over both CAN and serial ports. The main connector is a J106-4H14ZKSP-02 socket on the device, mating with J106-4H14TJSL-01 on the EO/IR platform.
Mechanically, the LR1200K1 remains compact for its energy class, with dimensions of ≤75 mm (W) × 90 mm (H) × 220 mm (L) and a total weight of ≤2 kg, with weight consistency within 50 g across units. The design uses a shared-aperture transmit/receive optical architecture, and external 3D models include details such as screws, cable routing and connector interfaces to simplify mechanical integration and interference checks at the platform level.
Environmental performance meets demanding military requirements: the operating temperature range is −40 °C to +60 °C, storage −45 °C to +65 °C, and vibration and shock tests are conducted according to MIL-STD-810G, covering multi-axis random vibration and shocks up to ≥20 g (vertical) and ≥15 g (longitudinal and lateral) for 11 ms. These characteristics make LR1200K1 suitable for armoured vehicles, towed and self-propelled artillery, mobile border-surveillance systems and shipborne EO/IR platforms.